Sylvan Lake SNOTEL

8,440 ftPark County, WyomingNRCS site 806Updated Thu Oct 22, 7:00 PM MDT

SWE0.1″10% of median
Depth0″— 48 h
Temp42°31°–54° 48 h
Thu 22Past 48 hSnow water equivalent0.1″ now-0.500.50.1″Snow depth0″ now-0.500.50″Air temperature42°F now40°32°42°FNow · Thu 7 PM
ThuPast 48 hSnow water equivalent0.1″ now-0.500.50.1″Snow depth0″ now-0.500.50″Air temperature42°F now40°32°42°FNow · Thu 7 PM
Sat 17Sun 18Mon 19Tue 20Wed 21Past 7 daysSnow water equivalent0.1″ now-0.500.50.1″Snow depth0″ now-0.500.50″Air temperature42°F now25°50°32°42°FNow · Thu 7 PM
SatSunMonTueWedPast 7 daysSnow water equivalent0.1″ now-0.500.50.1″Snow depth0″ now-0.500.50″Air temperature42°F now25°50°32°42°FNow · Thu 7 PM
0″10″20″OctNovDecJanFebMarAprMayJunJulMedian peak 22″ · Apr 230.1″ today · 10% of median
0″10″20″ONDJFMAMJJMedian peak 22″ · Apr 230.1″ today · 10% of median
<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

10%of the 1991–2020 median for today

0.1″ of water today against a median of 1.0″, 90% below median. The median peak is 22.0″ around April 23.

Nearby SNOTEL stations

All Wyoming
StationElevationDepth, 7 daysSWE% medianDepth48 h
Sylvan RoadWY · 6 mi7,140 ft0.0″—0″0″
BlackwaterWY · 19 mi9,830 ft0.5″29%0″0″
Parker PeakWY · 21 mi9,420 ft0.2″14%0″0″
Evening StarWY · 22 mi9,030 ft0.1″8%0″0″
Thumb DivideWY · 22 mi7,970 ft0.0″—0″0″
Two Ocean PlateauWY · 23 mi9,240 ft0.4″17%0″0″
CanyonWY · 24 mi7,870 ft0.1″25%0″0″
Lewis Lake DivideWY · 31 mi7,880 ft0.0″—0″0″

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.