A cold frontal boundary arriving on Nov 17th followed by a modified arctic airmass loft and long-fetch northwesterly flow by Nov 18th facilitate heavy snow across the Cascades above 2000-3000ft.
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.
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.
The episode as NWS PQR wrote it up.
A cold frontal boundary arriving on Nov 17th followed by a modified arctic airmass loft and long-fetch northwesterly flow by Nov 18th facilitate heavy snow across the Cascades above 2000-3000ft.
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
June Lake SNOTEL at 3440 ft recorded 18 inches of snowfall with 12 inches first hit by 0700 Nov 18th and Swift Creek SNOTEL at 4440 ft recorded 15 inches of snow with 12 inches hit around 0100 Nov 18th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2024Every state in 2024This day in weather historyWarnings in Washington, November 2024
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 2026-10-01. Each event’s entry at NCEI: 1221933.