Center for Snow and Avalanche Studies

Swamp Angel Study Site
Swamp Angel Study Plot (subalpine)

Senator Beck Study Site
Senator Beck Study Plot (alpine)

Putney Study Site
Putney Study Plot (summit)

Senator Beck Basin Stream Gauge
Basin Stream Gauge

St Paul Basestation
St. Paul RF Base Station

The Center for Snow & Avalanche Studies serves the mountain science community and regional resource managers by hosting & conducting interdisciplinary research and conducting integrative 24/7/365 monitoring that captures weather, snowpack, radiation, soils, plant community and hydrologic signals of regional climate trends.

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Mountain System Monitoring: Winter Storm Data

Subscribe to CSAS Winter Storm Report Emails

This CSAS Storm and Precip Data xlsx file contains the current and past 10 seasons of CSAS winter storm data, including:

  • Dates, times and duration of each winter storm event
    (2003-current)
  • Change in the height of snow at both our alpine Senator Beck study plot and our subalpine Swamp Angel site.
  • Peak gust data from our Putney site.
  • Mean and maximum precipitation intensity during each storm
  • Total new water accumulation in mm for each storm event.
  • Summary data for each month of the season.
  • Cummulative annual precipitation graph by month

See our Current Conditions for the latest hourly data. All times shown are in Mountain Standard Time (MST)


2013-2014 Winter Storm Reports:


STORM #25



Storm precip began between 1300-1400 hrs MST Saturday May 24 (DOY 144)
Storm precipitation ended: 0300 hrs MST Sunday May 25 (DOY 145)
Storm duration = 14 hrs
Storm total water content at SASP = 18 mm (0.7 inches)
Mean Precip intensity: 1.29 mm/hr
Max Precip intensity: 4 mm/hour between 0100-0200 on May 25
Max gain in snow depth at SASP = 17 cm (6.7 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 18 cm (7.1 inches) of snow


STORM #24

Mother's Day morning brought one of the most intense storms of the season, amounting to just over a foot of snow containing more than an inch of water in less than 24 hours. Unfortunately the 8th dust event of the season (D8-WY2014) was deposited very near the top of the new snow.



Storm precip began between 2200-2300 hrs MST Saturday May 10 (DOY 130)
Storm precipitation ended: 2000 hrs MST Sunday May 11(DOY 131)
Storm duration = 22 hrs
Storm total water content at SASP = 32 mm (1.3 inches)
Mean Precip intensity: 1.5 mm/hr
Max Precip intensity: 7 mm/hour between 0700-0800 on May 11th
Max gain in snow depth at SASP = 31 cm (12.2 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 31 cm (12.2 inches) of snow (yes, the same as SASP)


STORM #23



This storm dropped more water at Swamp Angel Study Plot than any other so far this year! It also brought our 7th dust-on-snow event of the season, coinciding with this storm's most intense precip on the mid-afternoon of Saturday April 26th.

Storm precip began between 0600-0700 hrs MST Saturday April 26 (DOY 116)
Storm precipitation ended: 2100 hrs MST Tuesday April 29 (DOY 119)
Storm duration = 87 hrs
Storm total water content at SASP = 65 mm (2.6 inches)
Mean Precip intensity: 0.75 mm/hr
Max Precip intensity: 4 mm/hour between 1500-1600 on April 26th (1st day of storm)
Max gain in snow depth at SASP = 67 cm (26.4 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 30 cm (11.8 inches) of snow


STORM #22



Storm precip began between 1500-1600 hrs MST Saturday April 12 (DOY 102)
Storm precipitation ended: 0900 hrs Monday April 14 (DOY 104)
Storm duration = 42 hrs
Storm total water content at SASP = 26 mm (1 inch)
Mean Precip intensity: 0.6 mm/hr
Max Precip intensity: 4 mm/hour during the first hour of the storm
Max gain in snow depth at SASP = 32 cm (12.6 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 21 cm (8.3 inches) of snow


STORM #21



Storm precip began between 1200-1300 hrs MST Saturday April 5 (DOY 95)
Storm precipitation ended: 0900 hrs Monday April 7 (DOY 97)
Storm duration = 45 hrs
Storm total water content at SASP = 24 mm (0.9 inches)
Mean Precip intensity: 0.5 mm/hr
Max Precip intensity: 4 mm/hour between 2200-2300 hrs on April 6 (DOY 96)
Max gain in snow depth at SASP = 31 cm (12.2 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 26 cm (10.2 inches) of snow


STORM #20



Storm precip began between 0800-0900 hrs MST Wednesday April 2 (DOY 92)
Storm precipitation ended: 1300 hrs Thursday April 3 (DOY 93)
Storm duration = 29 hrs
Storm total water content at SASP = 18 mm (0.7 inches)
Mean Precip intensity: 0.6 mm/hr
Max Precip intensity: 2 mm/hour
Max gain in snow depth at SASP = 19 cm (7.5 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 30 cm (11.8 inches) of snow


STORM #19



Storm precip began between 0100-0200 hrs MST Wednesday Mar 26 (DOY 85)
Storm precipitation ended: 0400 hrs Friday March 28 (DOY 87)
Storm duration = 51 hrs
Storm total water content at SASP = 32 mm (1.3 inches)
Mean Precip intensity: 0.6 mm/hr
Max Precip intensity: 4 mm/hour between 1500-1600 hrs, Weds Mar 26
Max gain in snow depth at SASP = 40 cm (16 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 36 cm (14 inches) of snow


STORM #18



Storm precip began between 0100-0200 hrs MST Friday Mar 7 (DOY 66)
Storm precipitation ended: 0700 hrs Sat March 8 (DOY 67)
Storm duration = 30 hrs
Storm total water content at SASP = 14 mm (0.55 inches)
Mean Precip intensity: 0.5 mm/hr
Max Precip intensity: 2 mm/hour
Max gain in snow depth at SASP = 14 cm (5.5 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 13 cm (5.1 inches) of snow


STORM #17



Storm precip began between 1800-1900 hrs MST Tuesday Mar 4 (DOY 63)
Storm precipitation ended: 0100 hrs Weds March 5 (DOY 64)
Storm duration = 7 hrs
Storm total water content at SASP = 12 mm (0.5 inches)
Mean Precip intensity: 1.7 mm/hr
Max Precip intensity: 3 mm/hour during the first hour of storm
Max gain in snow depth at SASP = 18 cm (7 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 19 cm (7.5 inches) of snow


STORM #16



Storm precip began between 1400-1500 hrs MST Fri Feb 28 (DOY 59)
Storm precipitation ended: 1600 hrs Sunday March 2 (DOY 61)
Storm duration = 50 hrs
Storm total water content at SASP = 30 mm (1.2 inches)
Mean Precip intensity: 0.6 mm/hr
Max Precip intensity: 3 mm/hour between 0500-0600 hrs on Sat March 1(DOY 60)
Max gain in snow depth at SASP = 19 cm (7.5 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 15 cm (6 inches) of snow


STORM #15



Storm precip began between 1100-1200 hrs MST Thurs Feb 27 (DOY 58)
Storm precipitation ended: 0700 hrs Friday Feb 28 (DOY 59)
Storm duration = 20 hrs
Storm total water content at SASP = 30 mm (1.2 inches)
Mean Precip intensity: 1.5 mm/hr
Max Precip intensity: 5 mm/hour between 1800-1900 hrs
Max gain in snow depth at SASP = 33 cm (13 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 27 cm (10.6 inches) of snow


STORM #14



Storm precip began between 1400-1500 hrs MST Wednesday Feb 19 (DOY 50)
Storm precipitation ended: 0200 hrs Thursday Feb 20 (DOY 51)
Storm duration = 12 hrs
Storm total water content at SASP = 14 mm (0.55 inches)
Mean Precip intensity: 1.2 mm/hr
Max Precip intensity: 3mm/hour between 1700-1900 hrs
Max gain in snow depth at SASP = 19 cm (7.5 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 14 cm (5.5 inches) of snow


STORM #13



Storm precip began between 0000-0100 hrs MST Saturday Feb 8 (DOY 39)
Storm precipitation ended: 2000 hrs Monday Feb 10 (DOY 41)
Storm duration = 68 hrs
Storm total water content at SASP = 42 mm (1.7 inches)
Mean Precip intensity: 0.62 mm/hr
Max Precip intensity: 2mm/hour
Max gain in snow depth at SASP = 28 cm (11 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 11 cm (4.3 inches) of snow


STORM #12



Storm precip began between 0100-0200 hrs MST Monday Feb 3 (DOY 34)
Storm precipitation ended: 0500 hrs Wednesday Feb 5 (DOY 36)
Storm duration = 52 hrs
Storm total water content at SASP = 19 mm (0.75 inches)
Mean Precip intensity: 0.37 mm/hr
Max Precip intensity: 2mm/hour between 1600-1700 hours on Tues Feb 4
Max gain in snow depth at SASP = 7 cm (2.8 inches) of snow
Max gain in snow depth at SBSP (wind affected) = 13 cm (5 inches) of snow


STORM #11



Storm precip began between 2000-2100 hrs MST Weds January 29, 2014
Storm precipitation ended: 1400 hrs Saturday Feb 1st
Storm duration = 66 hrs
Storm total water content at SASP =  45 mm (1.8 inches)
Mean Precip intensity: 0.7 mm/hr
Max Precip intensity: 2 mm/hr
Max gain in snow depth at SASP during storm = 47 cm (18.5 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 19 cm (7.5 inches) of snow


STORM #10



Storm precip began between 0800-0900 hrs MST Sunday January 12, 2014
Storm precipitation ended: 0700 hrs Monday Jan 13th
Storm duration = 23 hrs
Storm total water content at SASP =  16 mm (0.6 inches)
Mean Precip intensity: 0.7 mm/hr
Max Precip intensity: 3 mm/hr between 1000 and 1100 hrs
Max gain in snow depth at SASP during storm = 17 cm (6.7 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 11 cm (4.3 inches) of snow



STORM #9



Storm precip began between 1300-1400 hrs MST Wednesday January 8, 2014
Storm precipitation ended: 2200 hrs Friday Jan 10th
Storm duration = 57 hrs
Storm total water content at SASP =  32 mm (1.3 inches)
Mean Precip intensity: 0.6 mm/hr
Max Precip intensity: 2 mm/hr
Max gain in snow depth at SASP during storm = 40 cm (16 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 25 cm (10 inches) of snow



STORM #8

This storm was another low intensity storm, this time with comparatively lighter winds.



Storm precip began between 1800-1900 hrs MST Thursday December 19th (DOY 353)
Storm precipitation ended: 2000 hrs Friday Dec 20th (DOY 354)
Storm duration = 26 hrs
Storm total water content at SASP =  16 mm (0.6 inches)
Mean Precip intensity: 0.6 mm/hr
Max Precip intensity: 2 mm/hr between 1700-1800 hrs on Friday Dec 20th (DOY 354)
Max gain in snow depth at SASP during storm = 29 cm (11.4 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 21 cm (8.3 inches) of snow

STORM #7

This one was just barely a storm (12mm of SWE in 25hrs) - a low intensity precip event with high winds, resulting in very little change in snow depth in either the subalpine or alpine.



Storm precip began between 1100-1200 hrs MST Saturday December 7th (DOY 341)
Storm precipitation ended: 1200 hrs Sunday Dec 8th (DOY 342)
Storm duration = 25 hrs
Storm total water content at SASP =  12 mm (0.5 inches)
Mean Precip intensity: 0.5 mm/hr
Max Precip intensity: 1 mm/hr
Max gain in snow depth at SASP during storm = 10 cm (3.9 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 2 cm (0.8 inches) of snow

STORM #6

As seen from Silverton, snow was blowing horizontal during the entire duration of Storm #6. The cold front at the backside of the storm hit Swamp Angel between 7am and 8am Wednesday Dec 4th with a sharp drop in temp as barometric pressure began rising, after 3 days of dropping. It took about another hour for the front's cold air pool to reach Putney's elevation. The strong winds reduced total snow cover in the alpine at Senator Beck Study Plot. Winds at the relatively protected Swamp Angel averaged only 5mph during the storm (compared to 25mph at Senator Beck and 36mph at Putney).



Storm precip began between 1700-1800 hrs MST Tuesday December 3rd (DOY 337)
Storm precipitation ended: 1500 hrs Wednesday Dec 4th (DOY 338)
Storm duration = 22 hrs
Storm total water content at SASP =  31 mm (1.2 inches)
Mean Precip intensity: 1.4 mm/hr
Max Precip intensity: 3 mm/hr between 0800 - 0900 on Weds Dec 4th
Max gain in snow depth at SASP during storm = 36 cm (14.2 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 14 cm (5.5 inches) of snow

STORM #5

Storm 5 was really a much delayed wrap-around from Storm 4. There was a 14 hour gap in recorded precip between storm #4 and what we're calling "storm" #5. 



Storm precip began between 1400-1500 hrs MST Sunday November 24th (DOY 328)
Storm precipitation ended: 0200 hrs Monday Nov 25th (DOY 329)
Storm duration = 12 hrs
Storm total water content at SASP =  12 mm (0.5 inches)
Mean Precip intensity: 1 mm/hr
Max Precip intensity: 2 mm/hr
Max gain in snow depth at SASP during storm = 8 cm (3 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 5 cm (2 inches) of snow

STORM #4

With no recorded precip for 12 consecutive hours (since midnight Saturday Nov 23), we've wrapped up Winter Storm #4. The National Weather Service is calling for additional snow accumulation Sunday afternoon and overnight. If we get at least another 1/2" of SWE (12mm), we will count that as winter storm #5.

Storm #4 had generally lighter winds than previous storms this season, averaging only 12mph at Putney. Although it was the longest storm we've recorded since December 2010, there were several breaks in precip lasting up to nine hours. 


Storm precip began between 1500-1600 hrs MST Wednesday Nov 20
Storm precipitation ended: 2400 hrs Saturday Nov 23
Storm duration = 81 hrs
Storm total water content at SASP =  37 mm (1.5 inches)
Mean Precip intensity: 0.5 mm/hr
Max Precip intensity: 3 mm/hr at 10am on Thursday Nov 21
Max gain in snow depth at SASP during storm = 42 cm (16.5 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 46 cm (18 inches) of snow

STORM #3



Storm precip began between 1600-1700 hrs MST Friday Nov 15 (DOY 319)
Storm precipitation ended: 2400 hrs Saturday Nov 16 (DOY 320)
Storm duration = 32 hrs
Storm total water content at SASP =  29 mm (1.1 inches)
Mean Precip intensity: 0.9 mm/hr
Max Precip intensity: 4 mm/hr from 1700-1800 and 1900-2000 hrs on Nov 15;
Max gain in snow depth at SASP during storm = 33 cm (13 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 19 cm (7.5 inches) of snow




STORM #2

Storm precip began between 0900-1000 hrs MST Tuesday Oct 29 (DOY 302)
Storm precipitation ended: 0200 hrs Wednesday Oct 30 (DOY 303)
Storm duration = 17 hrs
Storm total water content at SASP =  23 mm (0.9 inches)
Mean Precip intensity: 1.35 mm/hr
Max Precip intensity: 4 mm/hr from 2000-2100 hrs;
Max gain in snow depth at SASP during storm = 29 cm (11.4 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 16 cm (6.3 inches) of snow
Wind behavior at PTSP:


STORM #1

Storm precip began between 2000-2100 hrs MST Wednesday Oct 9 (DOY 282)
Storm precipitation ended: 1900 hrs Thursday Oct 10 (DOY 283)
Storm duration = 24 hrs
Storm total water content at SASP =  55 mm (2.2 inches)
Mean Precip intensity: 2.3 mm/hr
Max Precip intensity: 7 mm/hr from 0900-1000 hrs;
                                        also of note: 5 mm/hr between 0700-0800 hrs and again 1000-1100 hrs
Max gain in snow depth at SASP during storm = 54 cm (21 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 39 cm (15 inches) of snow
Wind behavior at PTSP:


2012-2013 Winter Storm Reports:


Winter 2012-2013 Storm #22: May 6-7, 2013:
Storm precip began between 0400-0500 hrs MST Monday May 6 (DOY 126)
Storm precipitation ended: 0400 hrs the next morning
Storm duration = 24 hrs
Storm total water content at SASP =  12 mm (0.47 inches)
Mean Precip intensity: 0.5 mm/hr
Max Precip intensity: 3mm/hr from 1100-1200 hrs
Max gain in snow depth at SASP during storm = 10 cm (4 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 15 cm (6 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #21: April 17-18, 2013: (preceded by and including Dust-on-Snow Event #8)
Storm precip began between 0400-0500 hrs MST Wednesday April 17 (DOY 107)
Storm precipitation ended: 0200 hrs the next day
Storm duration = 22 hrs
Storm total water content at SASP =  16 mm (0.63 inches)
Mean Precip intensity: 0.73 mm/hr
Max Precip intensity: 3mm/hr from 1600-1700 hrs
Max gain in snow depth at SASP during storm = 21 cm (8.3 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 13 cm (5.1 inches) of snow
Wind behavior at PTSP: Winds switched from southwesterly to northerly at noon.

Winter 2012-2013 Storm #20: April 14, 2013: (included Dust-on-Snow Event #7)
Storm precip began between 2400-0100 hrs MST April 14 (DOY 104)
Storm precipitation ended: 0900 hrs on the same day
Storm duration = 9 hrs
Storm total water content at SASP =  27mm (1.1 inches)
Mean Precip intensity: 3.0 mm/hr
Max Precip intensity: 4mm/hr from 0300-0400 hrs and again from 0600-0800 hrs
Max gain in snow depth at SASP during storm = 29 cm (11.4 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 10 cm (3.9 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #19: April 8-9, 2013: (included Dust-on-Snow Event #6)
Storm precip began between 1100-1200 hrs MST April 8 (DOY 98)
Storm precipitation ended: 1700 hrs April 9 (DOY 99)
Storm duration = 30 hrs
Storm total water content at SASP =  30mm (1.18 inches)
Mean Precip intensity: 1.0 mm/hr
Max Precip intensity: 3mm/hr from 2100-2200 hrs on April 8 (DOY 89)
Max gain in snow depth at SASP during storm = 30 cm (11.8 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 25 cm (9.84 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #18: March 20-21: (included Dust-on-Snow Event #5)
Storm precip began between 1700-1800 hrs MST March 20th (DOY 79)
Storm precipitation ended: 1300 hrs March 21st (DOY 80)
Storm duration = 20 hrs
Storm total water content at SASP =  12mm (0.5 inches)
Mean Precip intensity: 0.6 mm/hr
Max Precip intensity: 2mm/hr from 0500-0700 hrs on March 21st (DOY 80)
Max gain in snow depth at SASP during storm = 20 cm (7.9 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 21 cm (8.3 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #17: March 8-10, 2013:
Storm precip began between 1000-1100 hrs MST Friday, March 8 (DOY 67)
Storm precipitation ended: 0400 hrs Sunday, March 10th (DOY 69)
Storm duration = 42 hrs
Storm total water content at SASP =  19mm (0.75 inches)
Mean Precip Intensity: 0.45 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour on March 8 (DOY 67) between 1300-1400 hrs
                                                       and again between 1800-1900 hrs
Max gain in snow depth at SASP during storm = 19 cm (7.5 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 19 cm (7.5 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #16: March 3-4, 2013:
Storm precip began between 1700-1800 hrs MST Sunday, March 3rd (DOY 62)
Storm precipitation ended: 1900 hrs Monday, March 4th (DOY 63)
Storm duration = 26 hrs
Storm total water content at SASP =  23mm (0.9 inches)
Mean Precip Intensity: 0.88 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour during 4 separate hours throughout the storm
Max gain in snow depth at SASP during storm = 24 cm (9.4 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 18 cm (7.1 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #15: February 26, 2013:
Storm precip began between 0700-0800 hrs MST Tuesday, Feb 26 (DOY 57)
Storm precipitation ended: 2000 hrs same day
Storm duration = 13 hrs
Storm total water content at SASP =  17mm (0.67inches)
Mean Precip Intensity: 1.31 mm/hr
Max 1 Hour Precip Intensity = 3 mm/hour between 0900 and 1000 hours near start of storm
Max gain in snow depth at SASP during storm = 15 cm (5.9 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 7 cm (2.75 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #14: February 20-22, 2013:
Storm precip began between 0900-1000 hrs MST Wednesday, Feb 20
Storm precipitation ended: 1600 hrs MST, Friday Feb 22
Storm duration = 54 hrs
Storm total water content at SASP =  21mm (0.83inches)
Mean Precip Intensity: .38 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour between 1800 and 1900 hours on Thursday Feb 21st (DOY 52)

Max gain in snow depth at SASP during storm = 17 cm (6.7 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 35 cm (13.8 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #13: February 8-10, 2013:
Storm precip began between 0400-0500 hrs MST Friday, Feb 8
Storm precipitation ended: 0400 hrs MST, Sunday Feb 10
Storm duration = 48 hrs
Storm total water content at SASP =  27mm (1.1 inches)
Mean Precip Intensity: .56 mm/hr
Max 1 Hour Precip Intensity = 3 mm/hour between 0700-0800 hrs on Saturday Feb 9
Max gain in snow depth at SASP during storm = 23 cm (9.1 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 17 cm (6.7 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #12: January 30-31, 2013:
Storm precip began between 1300-1400 hrs MST Wednesday, Jan 30
Storm precipitation ended: 0500 hrs MST, Thursday Jan 31
Storm duration = 16 hrs
Storm total water content at SASP =  14mm (0.55 inches)
Mean Precip Intensity: 0.9 mm/hr
Max 1 Hour Precip Intensity = 1 mm/hour
Max gain in snow depth at SASP during storm = 19 cm (7.5 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 17 cm (6.7 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #11: January 27-29, 2013:
Storm precip began between 1900-2000 hrs MST Sunday, Jan 27
Storm precipitation ended: 0700 hrs MST, Tuesday Jan 29
Storm duration = 36 hrs
Storm total water content at SASP =  25mm (1 inch)
Mean Precip Intensity: 0.7 mm/hr (.03 inches/hour)
Max 1 Hour Precip Intensity = 3 mm/hour between 2200 hrs and 2300 hrs on Jan 27
Max gain in snow depth at SASP during storm = 26 cm (10.2 inches) of snow
Max gain in snow depth at SBSP during storm (wind affected) = 18 cm (7 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #10: January 26-27, 2013:
Storm precip began between 0900-1000 hrs MST Saturday, Jan 26
Storm precipitation ended: 1200 hrs MST, Sunday Jan 27
Storm duration = 27 hrs
Storm total water content at SASP =  31mm (1.2 inches)
Mean Precip Intensity: 1.15 mm/hr (.05 inches/hour)
Max 1 Hour Precip Intensity = 3 mm/hour 1600 hrs on Jan 26 and 1100 hrs on Jan 27
Max gain in snow depth at SASP during storm = 32 cm (12.6 inches) of snow
Max gain in snow depth at SBSP during storm = 27 cm (10.6 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #9: January 10-11, 2013
Storm precip began between 1600-1700 hrs MST Thursday, Jan 10
Storm precipitation ended: 1400 hrs MST, Friday Jan 11
Storm duration = 22 hrs
Storm total water content at SASP =  25mm (0.98 inches)
Mean Precip Intensity: 1.14 mm/hr (.04 inches/hour)
Max 1 Hour Precip Intensity = 2 mm/hour
Max gain in snow depth at SASP during storm = 37 cm (14.6 inches) of snow
Max gain in snow depth at SBSP during storm = 29 cm (11.4 inches) of snow
Wind behavior at PTSP:

Winter 2012-2013 Storm #8: December 26-28, 2012
Storm precip began between 0600-0700 hrs MST Wednesday, Dec 26 (DOY 361)
Storm precipitation ended: 1200 hrs MST, Friday Dec 28 (DOY 363)
Storm duration = 54 hrs
Storm total water content at SASP =  13mm (0.5 inches) all as snow
Mean Precip Intensity: 0.2 mm/hr (<.01 inches/hour)
Max 1 Hour Precip Intensity = 1 mm/hour
Max gain in snow depth at SASP during storm = 5 cm (2 inches) of snow
Max gain in snow depth at SBSP during storm = 4 cm (1.6 inches) of snow 
Wind behavior at PTSP:

Winter 2012-2013 Storm #7: December 24, 2012
Storm precip began between 2400-0100 hrs MST Monday, Dec 24 (DOY 359)
Storm precipitation ended: 0700 hrs MST, Tuesday Dec 25 (DOY 360)
Storm duration = 31 hrs
Storm total water content at SASP =  12mm (0.5 inches) all as snow
Mean Precip Intensity: 0.4 mm/hr (.01 inches/hour)
Max 1 Hour Precip Intensity = 1 mm/hour
Max gain in snow depth at SASP during storm = 19 cm (7.5 inches) of snow
Max gain in snow depth at SBSP during storm = 11 cm (4.3 inches) of snow 
Wind behavior at PTSP:
Storm 7

Winter 2012-2013 Storm #6: December 18-19, 2012
Storm precip began between 2200-2300 hrs MST Tuesday, Dec 18 (DOY 353)
Storm precipitation ended: 1900 hrs MST, Wednesday Dec 19 (DOY 354)
Storm duration = 21 hrs
Storm total water content at SASP =  15mm (0.6 inches) all as snow
Mean Precip Intensity: 0.7 mm/hr (.03 inches/hour)
Max 1 Hour Precip Intensity = 3 mm/hour between 0200-0300 on Dec 19
Max gain in snow depth at SASP during storm = 15 cm (5.9 inches) of snow
Max gain in snow depth at SBSP during storm = 5 cm (2 inches) of snow 
Wind behavior at PTSP:
Storm 6

Winter 2012-2013 Storm #5: December 15-17, 2012
Storm precip began between 0500-0600 hrs MST Saturday, Dec 15 (DOY 350)
Storm precipitation ended: 0900 hrs MST, Monday Dec 17 (DOY 352)
Storm duration = 52 hrs
Storm total water content at SASP =  13mm (0.5 inches) all as snow
Mean Precip Intensity: 0.25 mm/hr (.01 inches/hour)
Max 1 Hour Precip Intensity = 1 mm/hour
Max gain in snow depth at SASP during storm = 4cm (1.6 inches) of snow
Max gain in snow depth at SBSP during storm = 7cm (2.8 inches) of snow 
Wind behavior at PTSP:

Winter 2012-2013 Storm #4: December 14, 2012
Storm precip began between 0600-0700 hrs MST Friday, Dec 14 (DOY 349)
Storm precipitation ended: 2300 hrs MST, Dec 14 (DOY 349)
Storm duration = 17 hrs
Storm total water content at SASP =  14mm (0.55 inches) all as snow
Mean Precip Intensity: 0.82 mm/hr (.02 inch/hour)
Max 1 Hour Precip Intensity = 2 mm/hour during hours ending at 0800 and 1000
Max gain in snow depth at SASP during storm = 20cm (7.9 inches) of snow
Max gain in snow depth at SBSP during storm = 17cm (6.7 inches) of snow 
Wind behavior at PTSP:

Winter 2012-2013 Storm #3: December 10-11, 2012
Storm precip began: 1000 hrs MST Monday, Dec 10 (DOY 345)
Storm precipitation ended: 0700 hrs MST, Dec 11 (DOY 346)
Storm duration = 21 hrs
Storm total water content at SASP =  14mm (0.55 inches) all as snow
Mean Precip Intensity: 0.67 mm/hr (.02 inch/hour)
Max 1 Hour Precip Intensity = 1 mm/hour
Max gain in snow depth at SASP during storm = 14cm (5.5 inches) of snow
Max gain in snow depth at SBSP during storm = 4cm (1.6 inches) of snow 
Wind behavior at PTSP:
storm3

Winter 2012-2013 Storm #2: December 9, 2012
Storm precip began: 0300 hrs MST Sunday, Dec 9 (DOY 344)
Storm precipitation ended: 1600 hrs MST
Storm duration = 13 hrs
Storm total water content at SASP =  12mm (0.47 inches) all as snow
Mean Precip Intensity: 0.86 mm/hr (.03 inch/hour)
Max 1 Hour Precip Intensity = 3 mm/hour between 0700 - 0800 hrs
Max gain in snow depth at SASP during storm = 12cm (4.7 inches) of snow
Max gain in snow depth at SBSP during storm = 5cm (2 inches) of snow 
Wind behavior at PTSP: NNW Winds gusted to 45mph, much lower wind speeds than experienced during our 1st winter storm last month.

Storm2

Winter 2012-2013 Storm #1: November 9-10, 2012
Storm precip began: 0200 hrs MST Friday, Nov 9 (DOY 314)
Storm precipitation ended: 1300 hrs MST, Saturday, Nov 10 (DOY 315)
Storm duration = 35 hrs
Storm total water content at SASP =  45mm (1.77 inches) all as snow
Mean Precip Intensity: 1.29 mm/hr (.05 inch/hour)
Max 1 Hour Precip Intensity = 3 mm/hour between 0200 - 0400 hrs on DOY 315 (Nov 10, 2012)
Max gain in snow depth at SASP during storm = 40cm (16 inches) of snow
Max gain in snow depth at SBSP during storm = 31cm (12 inches) of snow 
Wind behavior at PTSP: SW'ly winds were fairly ferocious throughout this storm, averaging 30 mph and gusting to 82 mph, leaving a lot of terrain wind stripped back down to bare ground.  
Storm1


Winter 2011-2012 Storm Reports:


Winter 2011-2012 Storm #23: April 26-27, 2012
Storm precip began: 1500 hrs MST April 26 (DOY 117)
Storm precip ended: 1000 hrs MST April 27 (DOY 118)
Storm Duration = 19 hrs
Storm total HNW at SASP = 13 mm (0.51 in)
Mean Precip Intensity =0.68 mm/hr
Max 1 Hour Precip Intensity = 4 mm/hour between 1700 - 1800 hrs
Max gain in HS at SASP during storm = 9 cm (3.5 in)
Max gain in HS at SBSP during storm = 21 cm (8.3 in)
Peak gust at PTSP during storm: 23.7 ms (53 mph) @ 0511 hrs; wind rose for storm

Winter Storm #22: April 19-20, 2012
Storm precip began: 0500 hrs MST April 19 (DOY 110)
Storm precip ended: 0200 hrs MST April 20 (DOY 111)
Storm Duration = 21 hrs
Storm total HNW at SASP = 19 mm (0.75 in)
Mean Precip Intensity =0.9 mm/hr
Max 1 Hour Precip Intensity = 3 mm/hour between 0600 - 0700
Max gain in HS at SASP during storm = 13 cm (5.1 in)
Max gain in HS at SBSP during storm = 12 cm (4.7 in)
Peak gust at PTSP during storm: 16.1 ms (36.1 mph) @ 1719 hrs on April 19; wind rose for storm

Winter Storm #21: April 13-16, 2012
Storm precip began: 1600 hrs MST April 13 (DOY 104)
Storm precip ended: 0700 hrs MST April 16 (DOY 107)
Storm Duration = 63 hrs
Storm total HNW at SASP = 31 mm (1.2 in)
Mean Precip Intensity =0.5 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour
Max gain in HS at SASP during storm = 31 cm (12.2 in)
Max gain in HS at SBSP during storm = 39 cm (15.35 in)
Peak gust at PTSP during storm: 22.8 ms (50.9 mph) @ 0818 hrs on April 14; wind rose for storm

Winter Storm #20: March 17-20, 2012
Storm precip began: 2000 hrs MST March 17 (DOY 77)
Storm precip ended: 0500 hrs MST March 20 (DOY 80)
Storm Duration = 57 hrs
Storm total HNW at SASP = 39 mm (1.5 in)
Mean Precip Intensity =0.68 mm/hr
Max 1 Hour Precip Intensity = 3 mm/hour at 1300, 1600 and 1700 on March 18th.
Max gain in HS at SASP during storm = 35 cm (13.8 in)
Max gain in HS at SBSP during storm = 36 cm (14 in)
Peak gust at PTSP during storm: 41 ms (91.7 mph) @1240 hrs; wind rose for storm

Winter Storm #19: March 1-2, 2012
Storm precip began: 1000 hrs MST March 1 (DOY 61)
Storm precip ended: 1900 hrs MST March 2 (DOY 62)
Storm Duration = 33 hrs
Storm total HNW at SASP = 19 mm (0.75 in)
Mean Precip Intensity = 0.58 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour
Max gain in HS at SASP during storm = 11 cm (4.3 in)
Max gain in HS at SBSP during storm = 3 cm (1.2 in)
Peak gust at PTSP during storm: 26.5 ms (59.3 mph) @1410 hrs; wind rose for storm

Winter Storm #18: February 27-28, 2012
Storm precip began: 1800 hrs MST Feb 19 (DOY 58)
Storm precip ended: 1300 hrs MST Feb 20 (DOY 59)
Storm Duration = 19 hrs
Storm total HNW at SASP = 32 mm (1.26 in)
Mean Precip Intensity = 1.68 mm/hr
Max 1 Hour Precip Intensity = 4 mm/hour
Max gain in HS at SASP during storm = 38 cm (15 in)
Max gain in HS at SBSP during storm = 26 cm (10.2 in)
Peak gust at PTSP during storm: 35.6 ms (79.6 mph) @ 0120 hrs; wind rose for storm

Winter Storm #17: February 19-20, 2012
Storm precip began: 1300 hrs MST Feb 19 (DOY 50)
Storm precip ended: 1500 hrs MST Feb 20 (DOY 51)
Storm Duration = 26 hrs
Storm total HNW at SASP = 17 mm (0.67 in)
Mean Precip Intensity = 0.65 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour @ 2100 hrs on Feb 19
Max gain in HS at SASP during storm = 12 cm (4.7 in)
Max gain in HS at SBSP during storm = 8 cm (3.15 in)
Peak gust at PTSP during storm: 21.5 ms (48.1 mph) @ 1842 hrs; wind rose for storm

Winter Storm #16: February 12, 2012
Storm precip began: 0300 hrs MST Feb 12 (DOY 43)
Storm precip ended: 1100 hrs MST Feb 13 (DOY 44)
Storm Duration = 32hrs
Storm total HNW at SASP = 30mm (1.2 in)
Mean Precip Intensity = 0.94 mm/hr
Max 1 Hour Precip Intensity = 3 mm/hour between 0600 and 0700 on Feb 12
Max gain in HS at SASP during storm = 37 cm (14.6 in)
Max gain in HS at SBSP during storm = 34 cm (13.4 in)
Peak gust at PTSP during storm: 18.6 ms (41.6 mph) @ 2341hrs; wind rose for storm

Winter Storm #15: February 8-9, 2012
Storm precip began: 1400 hrs MST Feb 5
Storm precip ended: 1900 hrs MST Feb 6
Storm Duration = 29hrs
Storm total HNW at SASP = 18mm (0.7 in)
Mean Precip Intensity = 0.62 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour
Max gain in HS at SASP during storm = 29 cm (11.4 in)
Max gain in HS at SBSP during storm = 22 cm (8.7 in)
Peak gust at PTSP during storm: 22.3 ms (49.9 mph) @ 1819hrs during the last hour of precip;
wind rose for storm

Winter Storm #14: February 5-6, 2012
Storm precip began: 1900 hrs MST Feb 5
Storm precip ended: 1900 hrs MST Feb 6
Storm Duration = 24hrs
Storm total HNW at SASP = 14mm (0.55 in)
Mean Precip Intensity = 0.58 mm/hr
Max 1 Hour Precip Intensity = 3 mm/hour @ 1500 on Feb 6
Max gain in HS at SASP during storm = 17 cm (6.7 in)
Max gain in HS at SBSP during storm = 17 cm (6.7 in)
Peak gust at PTSP during storm: 11.8 ms (26.4 mph) @ 2049hrs; wind rose for storm

Winter Storm #13: January 26 - 27, 2012
Storm precip began: 2000 hrs MST Jan 26
Storm precip ended: 1000 hrs MST Jan 27
Storm Duration = 14hrs
Storm total HNW at SASP = 18mm (0.7 in)
Mean Precip Intensity = 1.29 mm/hr
Max 1 Hour Precip Intensity = 4 mm/hour @ 0300 and 0400 on Jan 27
Max gain in HS at SASP during storm = 20 cm (7.9 in)
Max gain in HS at SBSP during storm = 19 cm (7.5 in)
Peak gust at PTSP during storm: 24.7 ms (55 mph) @ 0200 hrs; wind rose for storm

Winter Storm #12: January 21-22, 2012
Storm precip began: 1100 hrs MST Jan 21
Storm precip ended: 1400 hrs MST Jan 22
Storm Duration = 27hrs
Storm total HNW at SASP = 44mm (1.7 in)
Mean Precip Intensity = 1.63 mm/hr
Max 1 Hour Precip Intensity = 4 mm/hour
Max gain in HS at SASP during storm = 54 cm (21 in)
Max gain in HS at SBSP during storm = 25 cm (10 in)
Peak gust at PTSP during storm: 28.1 ms (63 mph); wind rose for storm

Winter Storm #11: January 15-16,2012
Storm precip began: 2100 hrs MST Jan 15
Storm precip ended: 2300 hrs MST Jan 16
Storm Duration = 26 hrs
Storm total HNW at SASP = 18mm (0.7 in)
Mean Precip Intensity = 0.69 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour
Max gain in HS at SASP during storm = 30 cm (12 in)
Max gain in HS at SBSP during storm = 11 cm (4 in)
Peak gust at PTSP during storm: 29.1 ms (65 mph); wind rose for storm

Winter Storm #10: December 12-14, 2011
Storm precip began: 1700 hrs MST Monday, Dec 12 (DOY 346)
Storm precip ended: 1700 hrs MST Wednesday, Dec 14 (DOY 348)
Storm Duration = 48 hrs
Storm total HNW at SASP = 36mm (1.4 in)
Mean Precip Intensity = 0.75 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour
Max gain in HS at SASP during storm = 46 cm (18.1 in)
Max gain in HS at SBSP during storm = 48 cm (18.9 in)
Peak gust at PTSP during storm: 67.3 ms (150.5 mph) on Dec 12 (DOY 346) at 2313 hrs; wind rose for storm

Winter Storm #9: December 2-5, 2011
Storm precip began: 1500 hrs MST Friday, Dec 2 (DOY 336)
Storm precip ended: 0300 hrs MST Monday, Dec 5 (DOY 339)
Storm Duration = 60 hrs
Storm total HNW at SASP = 19mm (.75 in)
Mean Precip Intensity = 0.32 mm/hr
Max 1 Hour Precip Intensity = 3 mm/hour 1600-1700 on Dec 3 (DOY 337)
Max gain in HS at SASP during storm = 18 cm (7.1 in)
Max gain in HS at SBSP during storm = 17 cm (6.7 in)
Peak gust at PTSP during storm: 12.8 ms (28.5 mph) on Dec 4 (DOY 338) at 2356 hrs; wind rose for storm

Winter Storm #8: Nov 24-25, 2011
Our primary Swamp Angel datalogger malfunctioned early Thanksgiving morning. As a result, the following storm data is estimated from the Red Mountain Snotel, our SASP height of snow measurements, RH measurements at SASP, and a storm board at SASP.

Storm precip began: ~1800 hrs MST Thanksgiving Thursday, Nov 24 (DOY 328)
Storm precip ended approximately: 1600 hrs MST Friday, Nov 25 (DOY 329)
Storm Duration = ~29 hrs
Storm total HNW at SASP = ~13mm (.5 in)
Mean Precip Intensity = ~0.45 mm/hr
Max 1 Hour Precip Intensity = ~1 mm/hour
Max gain in HS at SASP during storm = 8.7 cm (3.4 in)
Max gain in HS at SBSP during storm = 3 cm (1.2 in)
Wind rose for storm

Winter Storm #7: Nov 20-22, 2011
An errant pine needle made it through filters on our precip gauge and caused slushing and delayed precip measurements during this storm. The good news is that the gauge reported the correct total for the storm, though the hours might be skewed later. We are calling the end of this storm 0600 this morning (Tues Nov 22, DOY 326), based on height of snow data.

Storm precip began: 1900 hrs MST Sunday, Nov 20 (DOY 324)
Storm precip ended approximately: 0600 hrs MST Tuesday, Nov 22 (DOY 326)
Storm Duration = 35 hrs (approx)
Storm total HNW at SASP = 16mm (0.6 in)
Mean Precip Intensity = 0.46 mm/hr
Max 1 Hour Precip Intensity = 1 mm/hour
Max gain in HS at SASP during storm = 19 cm (7.5 in)
Max gain in HS at SBSP during storm = 11 cm (4.3 in)
Wind Behavior at PTSP: Average winds measured 5.5m/s (12 mph), and only barely exceeded an hourly average of 8m/s during 3 separate hours early in the storm. The peak gust measuring 31.6m/s (71mph) came at 0138 on Monday Nov 21 (DOY325). Winds came from the south early in the storm until 0900 on Monday when they swung to the SW. At 1400 Monday, winds turned to the NW. Wind rose for storm

Winter Storm #6: Nov 13, 2011
We got a 12 hour storm producing exactly 12mm of water with a 12cm increase in height of snow (but it occurred on the 13th, not the 12th).

Storm precip began: 1000 hrs MST Sunday, Nov 13 (DOY 317)
Storm precip ended: 2200 hrs MST Sunday, Nov 13 (DOY 317)
Storm Duration = 12 hrs
Storm total HNW at SASP = 212mm (.47 in)
Mean Precip Intensity = 1 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour at 1400 
Max gain in HS at SASP during storm = 12 cm (4.7 in)
Max gain in HS at SBSP during storm = 4 cm (1.57 in)
Wind Behavior at PTSP: Winds came from the WSW for the first 7 hours, turning slightly to the WNW at 1700. Wind speeds averaged 12.6m/s (28 mph) for the duration of the storm, with a peak gust of 26.5m/s (59 mph) at 1012 Sunday Nov 13th. Wind rose for storm

Winter Storm #5: Nov 4-6, 2011
This storm got off to a slow start, with several hours (1700-2300) in between the first few small batches of precip. However, we experienced very high precip intensities early Saturday morning, November 5th (DOY 309).

Storm precip began: 1300 hrs MST Friday, Nov 4 (DOY 308)
Storm precip ended: 0900 hrs MST Saturday, Nov 6 (DOY 309)
Storm Duration = 20 hrs
Storm total HNW at SASP = 26mm (1 in)
Mean Precip Intensity = 1.3 mm/hr
Max 1 Hour Precip Intensity = 6 mm/hour at 0600 Sat Nov 5 (DOY 309) 
Max gain in HS at SASP during storm = 44 cm (17.3 in)
Max gain in HS at SBSP during storm = 33 cm (13 in)
Wind Behavior at PTSP: Winds came steadily from the South (mean 176°, std dev'n 13°), and exceeded 8m/s throughout the storm, gusting as high as 34.1 m/s (76 mph) at 1:34 MST Saturday. Wind rose for storm

Winter Storm #4: Nov 1-2, 2011
We currently have about 23cm (9") of snow on the ground at both our subalpine (SASP) and alpine (SBSP) sites. The skies mostly cleared over Silverton around 10am Wednesday (Nov 2, DOY 306), though a bit more precip occured at our study plots afterwards.

Storm precip began: 2000 hrs MST Tuesday, Nov 1 (DOY 305)
Storm precip ended: 1600 hrs MST Wednesday, Nov 2 (DOY 306)
Storm Duration = 20 hrs
Storm total HNW at SASP = 14 mm (.55 in)
Mean Precip Intensity = 0.7 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour
Max gain in HS at SASP during storm = 16 cm (6.3 in)
Max gain in HS at SBSP during storm = 18 cm (7 in)
Wind behavior at PTSP: Mean speeds exceeded 8m/s only between 0400 and 0900 MST Wednesday morning Nov 2nd [DOY 306], averaging 10.6 m/s (23.7 mph) during that time. The storm's peak gust of 16.1m/s (36mph) occurred at 0610. During the first few hours of the storm, winds came from the WWS, but turned to the N around 0200 MST Wednesday. Wind speeds decreased and swung back to the SW during the last few hours of the storm.
Wind rose for storm

Winter Storm #3: Oct 25-26, 2011
The sun has come out in Silverton after our 3rd winter storm this season. As it happened, snow cover from storms #1 and #2 persisted through nearly 2 weeks of sunny fall days.

Storm precip began: 0600 hrs MST Tuesday, Oct 25 (DOY 298)
Storm precip ended: 1500 hrs MST Wednesday, October 26 (DOY 299)
Storm Duration = 33 hrs
Storm total HNW at SASP = 27 mm
Mean Precip Intensity = 0.8 mm/hr
Max 1 Hour Precip Intensity = 2 mm/hour
Max gain in HS at SASP during storm = 22 cm (8.66 in)
Max gain in HS at SBSP during storm = 18 cm
Wind behavior at PTSP: Winds during this storm came from the SW and swung to the North only as precip ended. Mean speeds exceeded 8m/s during only 3 scattered hours. The storm's peak gust of 19.2m/s (43mph) occurred at 0344 MST early Wednesday, Oct 26th. Wind rose for storm

Winter Storm #2: Oct 5-6, 2011 
Storm precip began: 1600 hrs MST Wednesday, Oct 5 (DOY 278)
Storm precip ended: 1400 hrs MST Thursday, October 6
Storm Duration = 22 hrs
Storm total HNW at SASP = 50 mm
Mean Precip Intensity = 2.3 mm/hr
Max 1 Hour Precip Intensity = 6 mm/hour at 1000 MST Thursday
Max gain in HS at SASP during storm = 39 cm (15.3 in)
Max gain in HS at SBSP during storm = 31.4 cm (12.4 in)
Wind behavior at PTSP: This was a windy storm with average winds of 15m/s (33mph) out of the South (avg 194deg) during the storm. The max wind gust of a whopping 38.1m/s (85.2mph) occurred at 0755 on Thurs Oct 6th. Silverton (and Ouray/Telluride?) experienced a ~4hr power outage shortly afterwards.  Wind rose for storm

Winter Storm #1: Oct 4-5, 2011
** This storm was a mix of rain and snow below treeline 
Storm precip began: 0700 hrs MST Tuesday, Oct 4 (DOY 277)
Storm precip ended: 0100 hrs MST Wednesday, October 5
Storm Duration = 18 hrs
Storm total HNW at SASP = 17 mm
Mean Precip Intensity = 0.94 mm/hr
Max 1 Hour Precip Intensity = 5 mm/hour at 1200 MST Tuesday
Max gain in HS at SASP during storm = 1.6 cm (.63 in)
Max gain in HS at SBSP during storm = 10.3 cm (4 in)
Wind behavior at PTSP: The average winds were only 4.15m/s (9.3mph), and generally came out of the SE (avg 170deg). The max wind gust occurred early Wednesday a.m. during the last hour of the storm 9.7m/s (21.7mph).
Wind rose for storm

Winter 11/12 Pre-Season Storm. We received snow Sept 15-17, but it was gone by Sept 20th. The storm brought 38mm of water, resulting in a max height of snow of 15cm (6in) at SBSP and 8cm (3in) at SASP.

Storms from this and previous seasons (xlsx file)