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Regional Snow Analyses: Northern Rockies

Snow ReportsModel Assimilation ScheduleSnow Survey Schedule

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Imagemap to select NSA subregion Northwest Northern Rockies Intermountains Great Basin Sierra Nevada Western Coastal Southwest Central Rockies Western Plains Upper Midwest Midwest Northern Great Lakes South Southern Appalachia Southern Great Lakes Allegheny Front Eastern Coastal Northeast National
Automated Model Discussion:
October 13, 2025
  Area Covered By Snow:52.1%
  Area Covered Last Month:0.0%
Snow Depth
  Average:3.3 cm
  Minimum:0.0 cm
  Maximum:1752.1 cm
  Std. Dev.:5.4 cm
Snow Water Equivalent
  Average:0.4 cm
  Minimum:0.0 cm
  Maximum:1032.7 cm
  Std. Dev.:1.5 cm
more... English Units...
Select Region and Date
Snow Water Equivalent
Thumbnail image of Modeled Snow Water Equivalent
Animate: Season --- Two weeks --- One Day 		Snow Depth
Thumbnail image of Modeled Snow Depth
Animate: Season --- Two weeks --- One Day 		Average Snowpack Temp
Thumbnail image of Modeled Average Snowpack Temp
Animate: Season --- Two weeks --- One Day
SWE Change
Thumbnail image of Modeled SWE Change
Animate: Season --- Two weeks --- One Day 		Snow Precipitation
Thumbnail image of Modeled Snow Precipitation
Animate: Season --- Two weeks --- One Day 		Snow Melt
Thumbnail image of Modeled Snow Melt
Animate: Season --- Two weeks --- One Day
Blowing Snow Sublimation
Thumbnail image of Modeled Blowing Snow Sublimation
Animate: Season --- Two weeks --- One Day 		Surface Sublimation
Thumbnail image of Modeled Surface Sublimation
Animate: Season --- Two weeks --- One Day 		Non-Snow Precipitation
Thumbnail image of Modeled Non-Snow Precipitation
Animate: Season --- Two weeks --- One Day

Snow Reports

Top Ten:English Units...
Station IDNameElevation
(meters)		Snowfall
(cm)		Duration
(hours)		Report Date / Time(UTC)
45.8160_110.9260MT GALLATIN 11 NNE BOZEMAN MESONET (X4581109)242614.98610.0002025-10-12 13:49
47.0800_112.7300MT LEWIS AND CLARK 9 NNW LINCOLN MESONET (X4701127)211217.78024.0002025-10-13 02:00
46.4400_112.1900MT JEFFERSON 7 NW CORBIN MESONET (X4641121)202215.24024.0002025-10-13 02:00
HLNHELENA AP ASOS11663.8106.0002025-10-13 06:00
45.2891_111.3920MT MADISON 3 WNW BIG SKY TRAINED SPOTTER (X4521113)228710.16024.0002025-10-12 12:10
46.8400_112.5100MT LEWIS AND CLARK 11 SE LINCOLN MESONET (X4681125)211210.16024.0002025-10-13 02:00
HLNHELENA AP ASOS11662.5406.0002025-10-13 00:00
AUGM8AUGUSTA12447.87424.0002025-10-12 14:00
46.6045_111.9890MT LEWIS AND CLARK 2 ENE HELENA TRAINED SPOTTER (X4661119)11736.60424.0002025-10-13 05:15
46.5219_111.9120MT JEFFERSON 1 SE MONTANA CITY TRAINED SPOTTER (X4651119)14035.08024.0002025-10-12 15:07

Note: these data are unofficial and provisional.
Zip codes (where available) of observations will be included in text files after October 7, 2008.

Station Snowfall Reports
Station Snow Water Equivalent Reports
Station Snowdepth Reports

Interpolated Snowfall Products



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