Casper Mountain SNOTEL

7,940 ftNatrona County, WyomingNRCS site 389Updated Fri Oct 16, 4:00 AM MDT

SWE0.1″no median
Depth1″+1″ 48 h
Temp21°21°–38° 48 h
Thu 15Past 48 hSnow water equivalent0.1″ now00.50.1″Snow depth1″ now01″Air temperature21°F now20°40°32°21°FNow · Fri 4 AM
ThuPast 48 hSnow water equivalent0.1″ now00.50.1″Snow depth1″ now01″Air temperature21°F now20°40°32°21°FNow · Fri 4 AM
Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Past 7 daysSnow water equivalent0.1″ now-0.500.50.1″Snow depth1″ now01″Air temperature21°F now50°32°21°FNow · Fri 4 AM
SatSunMonTueWedThuPast 7 daysSnow water equivalent0.1″ now-0.500.50.1″Snow depth1″ now01″Air temperature21°F now50°32°21°FNow · Fri 4 AM
0″5″10″15″OctNovDecJanFebMarAprMayJunJulMedian peak 16″ · Apr 190.1″ today
0″10″ONDJFMAMJJMedian peak 16″ · Apr 190.1″ today
<50%50–6970–8990–109110–129130–149150%+
0″2″8″16″32″+
0″6″24″48″100″+
Map
Open in the Vertex map

Next 3 days

The forecast for this station is on its way.

16-day outlook, three models

Snowpack vs. median

—%of the 1991–2020 median for today

Nearby SNOTEL stations

All Wyoming
StationElevationDepth, 7 daysSWE% medianDepth48 h
Reno HillWY · 16 mi8,410 ft1.0″200%2″+2″
Laprele CreekWY · 31 mi8,370 ft0.4″—0″0″
Windy PeakWY · 49 mi7,890 ft0.0″—0″0″
Grave SpringsWY · 69 mi8,560 ft0.0″0%0″0″
Middle PowderWY · 76 mi7,760 ft——0″0″
Sand LakeWY · 88 mi10,080 ft1.5″150%5″+4″
Bear Trap MeadowWY · 88 mi8,200 ft0.2″200%0″0″
Med BowWY · 94 mi10,500 ft0.3″—7″+4″

Station details

Elevation
7,940 ft
Location
42.7336°N, 106.3179°W
County
Natrona County, Wyoming
Basin
Middle North Platte-Casper · HUC 10180007
Network
NRCS SNOTEL · site 389
Station ID
389:WY:SNTL · SHEF CSPW4
Reporting since
January 1962
NRCS name
Casper Mtn.
NWS forecast office
Riverton (RIW) discussion

Questions

What is snow water equivalent (SWE)?

SWE is the depth of water you would get by melting the whole snowpack. Casper Mountain's 1″ of snow holds 0.1″ of water, so the pack is about 10% water. Fresh powder is often 5 to 10%; old spring snow can be 40% or more.

How often does Casper Mountain SNOTEL update?

The station reports every hour by radio telemetry to the USDA Natural Resources Conservation Service. This page refreshes each hour. Readings are provisional until NRCS quality control.

What does “% of median” mean?

It compares today’s SWE with the 1991–2020 median for the same calendar day at this station. Above 100% means more water in the snowpack than on a typical year’s same date.

Where is Casper Mountain SNOTEL?

At 7,940 ft in Natrona County, Wyoming (42.7336°N, 106.3179°W), in the Middle North Platte-Casper basin.

How is the snow forecast made?

Vertex runs the HRRR, RRFS and GFS weather models at the station’s own elevation and carries the measured snowpack forward hour by hour. Treat it as guidance, and check your avalanche center’s forecast before heading out.