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

  Past Winter Storm Reports:

This CSAS Storm and Precip Data xlsx file contains the current and past 11 seasons of CSAS winter storm data, including:

  • Dates, times and duration of each winter storm event
  • 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)

2014-2015 Winter Storm Reports:

Winter Storm #2: November 14-15, 2014
Greetings from Silverton - Sunday morning dawned clear and cold (5 F in Silverton, -4 F at Putney) here in the western San Juans following a long winter storm - our Storm #2 of the winter of 2014/2015. Storm Report (pdf)

The prior, 'tentative' Storm #1 earlier this month did, in fact, linger just long enough with snowcover over more than half of Senator Beck Basin, albeit very thin cover, to 'count' as #1 . We will find that Storm #1 layer in our snow profiles for the rest of the winter, at least at the higher elevation Senator Beck Study Plot. Now we're really in business with a half-meter of snowcover and more over the entire Basin.

A special thanks to the many of you who have made your Winter 2014/2015 Friends of the CSAS contribution ... kudos to you! For those who would also like to contribute, and sustain our data collection at Senator Beck Basin, see: You can donate through PayPal or simply send a check to CSAS at the address shown.

Winter Storm #1: November 2-3, 2014
After a dry October, with only a couple of very minor and short-lived snowfalls that quickly melted back to the ground, we finally received a snowfall last weekend that may comprise the basal snowcover in Senator Beck Basin for this winter. We'll see - we're in for a sunny period ahead and we may lose this snowcover too. But, so far, the new snow is hanging in there over the majority of Senator Beck Basin and at our two study plots. So, tentatively, I'll consider this event as Storm #1 at Senator Beck Basin for winter 2014/2015. Storm Report (pdf)