An unusually cold air mass combined with an incoming front to create heavy snow in the Mount Shasta area of northern California.
Every event with a place to put it; 2 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 MFR wrote it up.
An unusually cold air mass combined with an incoming front to create heavy snow in the Mount Shasta area of northern California.
The national radar mosaic for the moment the first event began.
2 heavy snow. Local standard time, as filed.
A spotter in Tennant reported an estimated 5.0 inches of snow in 4 hours ending at 07/0700 PST. The Sand Flat Station near Mount Shasta reported 12 inches of snow in 13 hours ending at 07/0400 PST.
A spotter 2SSW Weed reported 10.0 inches of snow in 8 hours ending at 07/0900 PST. A spotter 3NW Mount Shasta City reported 7.0 inches of snow in 12 hours ending at 07/0740 PST. A spotter 4SW Weed reported 13.5 inches of snow in 8 hours ending at 07/0700 PST. A spotter 1WSW Mount Shasta City reported 12.0 inches of snow in in 9 hours ending at 07/0800 PST. A spotter 3NW Mount Shasta City reported 10.5 inches of snow in 12 hours ending at 07/0840 PST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2015Every state in 2015This day in weather historyWarnings in California, April 2015
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 2026-09-30. Each event’s entry at NCEI: 558893, 558892.