Sylvan Lake SNOTEL

8,440 ftPark County, WyomingNRCS site 806Updated Fri Oct 16, 4:00 AM MDT

Last peak16.9″SWE · Mar 16
Depth0″snow-free since May 15
Temp21°21°–47° 48 h
Thu 15Past 48 hAir temperature21°F now20°40°32°21°FNow · Fri 4 AM
ThuPast 48 hAir temperature21°F now20°40°32°21°FNow · Fri 4 AM
Sat 10Sun 11Mon 12Tue 13Wed 14Thu 15Past 7 daysAir temperature21°F now20°40°60°32°21°FNow · Fri 4 AM
SatSunMonTueWedThuPast 7 daysAir temperature21°F now20°40°60°32°21°FNow · Fri 4 AM
0″10″20″OctNovDecJanFebMarAprMayJunJul
0″10″20″ONDJFMAMJJ
<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

Last season

16.9″peak snow water equivalent

Last season peaked at 16.9″ of water, 77% of the median peak.

Nearby SNOTEL stations

All Wyoming

Station details

Elevation
8,440 ft
Location
44.4776°N, 110.1565°W
County
Park County, Wyoming
Basin
Yellowstone Headwaters · HUC 10070001
Network
NRCS SNOTEL · site 806
Station ID
806:WY:SNTL · SHEF SYLW4
Reporting since
October 1978
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. Fresh powder is often 5 to 10% water; old spring snow can be 40% or more.

How often does Sylvan Lake 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 Sylvan Lake SNOTEL?

At 8,440 ft in Park County, Wyoming (44.4776°N, 110.1565°W), in the Yellowstone Headwaters 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.