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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 14, 2025
  Area Covered By Snow:48.3%
  Area Covered Last Month:0.0%
Snow Depth
  Average:3.0 cm
  Minimum:0.0 cm
  Maximum:1747.1 cm
  Std. Dev.:5.1 cm
Snow Water Equivalent
  Average:0.4 cm
  Minimum:0.0 cm
  Maximum:1032.2 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)
46.5912_112.0090MT LEWIS AND CLARK 1 SE HELENA TRAINED SPOTTER (X4651120)123225.40014.0002025-10-13 14:22
46.5866_112.0120MT LEWIS AND CLARK 1 SSE HELENA TRAINED SPOTTER (X4651120)125125.40016.0002025-10-13 17:44
46.5904_111.9180MT LEWIS AND CLARK EAST HELENA PUBLIC (X4651119)118316.51014.0002025-10-13 14:17
46.5914_111.8910MT LEWIS AND CLARK 1 E EAST HELENA TRAINED SPOTTER (X4651118)118115.24015.0002025-10-13 15:07
46.5967_112.0580MT LEWIS AND CLARK 2 W HELENA TRAINED SPOTTER (X4651120)127827.43230.0002025-10-13 17:53
46.6415_111.7850MT LEWIS AND CLARK 7 ENE EAST HELENA PUBLIC (X4661117)122012.70014.0002025-10-13 14:27
46.5219_111.9120MT JEFFERSON 1 SE MONTANA CITY TRAINED SPOTTER (X4651119)140317.78025.0002025-10-13 13:00
46.6435_111.9190MT LEWIS AND CLARK 4 N EAST HELENA NWS EMPLOYEE (X4661119)113610.16015.0002025-10-13 15:30
47.4917_112.3940MT LEWIS AND CLARK AUGUSTA PUBLIC (X4741123)124210.16015.0002025-10-13 15:13
46.5485_112.0000MT JEFFERSON 3 WNW MONTANA CITY TRAINED SPOTTER (X4651120)148015.24024.0002025-10-13 13:52

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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