Heavy Snow in Washington, November 29 to 30, 2010

Name: Heavy Snow in Washington, November 29 to 30, 2010
Start: 2010-11-29T21:00
End: 2010-11-30T23:59
Location: Washington

November 29 to 30, 2010 · NWS PDT · 2 events in 2 counties and zones

Moisture streaming northeast across the area ahead of an upper level trough produced heavy snow. Around 40 vehicular accidents were reported in Kittitas County.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PDT wrote it up.

Moisture streaming northeast across the area ahead of an upper level trough produced heavy snow. Around 40 vehicular accidents were reported in Kittitas County. Snowfall amounts in inches included Trout Lake (7), 7 miles north northwest of Easton (8), Glenwood (12), 4 miles west southwest of Roslyn (7), 4 miles southeast of BZ Corner (9.3), Touchet Mountain SnoTel (11), and Ski Bluewood (15).

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pendleton, OR wrote its last area forecast discussion before the first event at Nov 29, 8:30 PM PST, 30 minutes earlier.

Area forecast discussion, Nov 29, 8:30 PM PST, 30 minutes before

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Hazardous weather outlook, Nov 29, 5:02 PM PST, 3 hours 58 minutes before

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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 heavy snow. Local standard time, as filed.

Heavy Snow, Northwest Blue Mountains

When: November 29, 9:00 PM PST to November 30, 11:59 PM PST
Where: Northwest Blue Mountains forecast zone
Reported by: Mesonet
Coordinates: 46.264, -118.193 (the zone’s center; the record gives no point)

Heavy Snow, East Slopes of the Washington Cascades

When: November 30, 1:00 AM PST to 6:00 PM PST
Where: East Slopes of the Washington Cascades forecast zone
Reported by: Trained Spotter

What these are

Heavy Snow: Snowfall reaching the local warning threshold without the other hazards of a winter storm.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Washington in 2010 Every state in 2010 This day in weather history Warnings in Washington, November 2010

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 263446, 263442.