Blazed Alder SNOTEL

3,660 ftClackamas County, OregonNRCS site 351Updated Thu Oct 22, 6:00 PM PDT

SWE0.1″no median
Depth0″0″ 48 h
Temp45°45°–68° 48 h
Wed 21Thu 22Past 48 hSnow water equivalent0.1″ now00.50.1″Snow depth0″ now-0.500.50″Air temperature45°F now50°32°45°FNow · Thu 6 PM
WedThuPast 48 hSnow water equivalent0.1″ now00.50.1″Snow depth0″ now-0.500.50″Air temperature45°F now50°32°45°FNow · Thu 6 PM
Fri 16Sat 17Sun 18Mon 19Tue 20Wed 21Past 7 daysSnow water equivalent0.1″ now-0.500.50.1″Snow depth0″ now00″Air temperature45°F now50°32°45°FNow · Thu 6 PM
FriSatSunMonTueWedPast 7 daysSnow water equivalent0.1″ now-0.500.50.1″Snow depth0″ now00″Air temperature45°F now50°32°45°FNow · Thu 6 PM
0″10″20″30″OctNovDecJanFebMarAprMayJunJulMedian peak 32.4″ · Apr 20.1″ today
0″20″ONDJFMAMJJMedian peak 32.4″ · Apr 20.1″ 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 Oregon
StationElevationDepth, 7 daysSWE% medianDepth48 h
Red HillOR · 8 mi4,410 ft0.3″—0″0″
South Fork Bull RunOR · 9 mi2,690 ft0.0″———
Mount Hood Test SiteOR · 10 mi5,380 ft——2″+2″
North ForkOR · 11 mi3,070 ft0.1″—0″−1″
Mud RidgeOR · 13 mi4,070 ft0.1″—0″—
GreenpointOR · 15 mi3,320 ft0.0″—0″0″
FifteenmileOR · 17 mi5,970 ft0.2″—0″—
Clear LakeOR · 18 mi3,810 ft——0″0″

Station details

Elevation
3,660 ft
Location
45.4287°N, 121.8560°W
County
Clackamas County, Oregon
Basin
Lower Columbia-Sandy · HUC 17080001
Network
NRCS SNOTEL · site 351
Station ID
351:OR:SNTL · SHEF BLAO3
Reporting since
October 1979
NWS forecast office
Portland (PQR) 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 Blazed Alder 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 Blazed Alder SNOTEL?

At 3,660 ft in Clackamas County, Oregon (45.4287°N, 121.8560°W), in the Lower Columbia-Sandy 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.