MOUNTAIN SYSTEM MONITORING: WINTER STORM DATA

See the PDF Reports and Excel Workbook page for the current CSAS Storms and Precip workbook (up to WY2023), and PDFs of all the winter storm reports per water year.

The CSAS Storms and Precip workbook contains the past 20 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.
  • Cumulative annual precipitation graph by month

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


2023-2024 Winter Storm Reports

Storm Report #20, May 9-11: A few inches, we love an albedo reset

Storm#20_WY24

Storm Report #19, May 5-6: Bringer-of-dust

Storm#19_WY24

CODOS dust update May 8th

Storm Report #18, April 25-28: A fresh 9 inches over four days

Storm#18_WY24

Storm Report #17, April 15-16: Brief storm, 5 inches at Swamp Angel

Storm#17_WY24

Storm Report #16, April 5-7: Windy storm, new light dust layer

Storm#16_WY24

Storm Report #15, March 26-27: One more little storm, snowpack at 2 meters

Storm#15_WY24

Storm Report #14, March 23-25: Another good dump at Swampy, not so much up high

Storm#14_WY24

Storm Report #13, March 12-15: Over a foot at Swamp Angel

Storm#13_WY24

Storm Report #12, March 3-4: A few inches of snow at Swamp Angel

Storm#12_WY24

Storm Report #11, February 26-28: Too windy for accumulation at Senator Beck

Storm#11_WY24

Storm Report #10, February 6-8: Another long one, more gain at Senator Beck

Storm#10_WY24

Storm Report #9, February 1-3: Two+ feet at Swamp Angel

Storm#9_WY24

Storm Report #8, January 17-18, 2024: A few more inches

Storm#8_WY24

Storm Report #7, January 10-15, 2024: Two feet over five days!

Storm#7_WY24

Storm Report #6, January 6-8, 2024: Back to back storms

Storm#6_WY24

Storm Report #5, January 4-6, 2024: 9 inches at Swamp Angel

Storm#5_WY24

Storm Report #4, December 13-14, 2023: Short, intense storm

Storm#4_WY24

* Station troubles at the moment; we’re working on it.

Storm Report #3, November 30-December 3, 2023: Over a foot of new snow at Senator Beck!

Storm#3_WY24

Storm Report #2, November 23-24, 2023: Keep it Coming

Storm#2_WY24

Storm Report #1, November 19-20, 2023: First Storm of the Season!

Storm#1_WY24