An upper-level trough dug southward across the Pacific Northwest during February 18th and 19th. Numerous hail showers developed along the coast, and snowfall occurred across the interior mountains.

Winter Weather in NORTHERN TRINITY, CALIFORNIA
From 19-FEB-18 07:00:00 to 19-FEB-18 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 4.0 inches of snow at an elevation of 1700 feet.

Heavy Snow in SOUTHERN HUMBOLDT INTERIOR, CALIFORNIA
From 18-FEB-18 22:00:00 to 19-FEB-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter reported 8 inches of snow falling during the overnight period. Elevation was 2800 feet.

Heavy Snow in SOUTHERN HUMBOLDT INTERIOR, CALIFORNIA
From 19-FEB-18 08:41:00 to 19-FEB-18 08:41:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter measured 8 inches of snow that occurred overnight, with snow drifts to 1 foot. Elevation of observation was 2800 feet. Location was 40.47N/-123.67W.

Hail in HUMBOLDT, CALIFORNIA
From 18-FEB-18 20:42:00 to 18-FEB-18 20:42:00 (PST-8)
Location: ARCATA
Magnitude: 0.25 
Crop damage: 0.00K
Reported by: Law Enforcement

Hail covered road led to a 19 vehicle accident at the intersection of Highway 101 and Highway 255. 16 injuries were reported.

Hail in HUMBOLDT, CALIFORNIA
From 18-FEB-18 23:12:00 to 18-FEB-18 23:12:00 (PST-8)
Location: (EKA)EUREKA MURRAY F
Magnitude: 0.25 
Crop damage: 0.00K
Reported by: Law Enforcement

Hail/snow pellet covered road led to a 7 vehicle accident. Approximately a half inch of hail accumulated on the roadway. CHP reports that the multi-vehicle crash involved a motorcyclist who suffered minor injuries to her leg.

Winter Weather in SOUTHEASTERN MENDOCINO INTERIOR, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 04:42:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter reported 1 inch of snow accumulation. Location was 39.13N/-123.21W.

Winter Weather in SOUTHERN HUMBOLDT INTERIOR, CALIFORNIA
From 18-FEB-18 07:00:00 to 19-FEB-18 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Station CA-HM-14 reported 2.5 inches of snow. Elevation is 597 feet.

Winter Weather in SOUTHWESTERN HUMBOLDT, CALIFORNIA
From 18-FEB-18 22:00:00 to 19-FEB-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 3.6 inches of snow that occurred overnight. Elevation was 1395 feet. Location was 40.2N/-124.1W.

Winter Weather in NORTHERN HUMBOLDT COAST, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 08:47:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 0.5 inch of snow. Elevation was 500 feet. Location was 40.77N/-124.14W.

Winter Weather in SOUTHERN HUMBOLDT INTERIOR, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 08:49:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 2 inches of snow that fell overnight. Elevation was 1200 feet. Location was 40.29N/-123.82W.

Winter Weather in SOUTHERN TRINITY, CALIFORNIA
From 18-FEB-18 08:00:00 to 19-FEB-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Station CA-TY-6 measured 4 inches of snow accumulation.

Winter Weather in SOUTHERN TRINITY, CALIFORNIA
From 18-FEB-18 08:00:00 to 19-FEB-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Station CA-TY-28 reported 5.5 inches of snow. Elevation 2532 feet.

Winter Weather in NORTHERN HUMBOLDT COAST, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 08:10:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 1 inch of snow accumulation. Elevation approximately 400 feet. Location 40.55N/-124.1W.

Winter Weather in NORTHERN HUMBOLDT COAST, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 0.3 inch of snowfall accumulation.

Winter Weather in NORTHWESTERN MENDOCINO INTERIOR, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 06:30:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 0.3 inch of snowfall accumulation. Elevation was 1780 feet.

Winter Weather in NORTHWESTERN MENDOCINO INTERIOR, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 0.5 inch of snowfall accumulation. Elevation was approximately 2000 feet.

Winter Weather in SOUTHERN HUMBOLDT INTERIOR, CALIFORNIA
From 18-FEB-18 08:00:00 to 19-FEB-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRahs report of 2.0 inches of snow at an elevation of 415 feet.

Winter Weather in SOUTHERN HUMBOLDT INTERIOR, CALIFORNIA
From 18-FEB-18 07:00:00 to 19-FEB-18 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

CoCoRahs report of 3.0 inches of snow at an elevation of 524 feet.

Winter Weather in SOUTHWESTERN MENDOCINO INTERIOR, CALIFORNIA
From 18-FEB-18 07:00:00 to 19-FEB-18 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRahs report of 0.5 inch of snow at an approximate elevation of 1061 feet.

Winter Weather in NORTHERN HUMBOLDT COAST, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 11:57:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 0.5 inch of snow at an elevation of 250 feet.

Winter Weather in COASTAL DEL NORTE, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 12:01:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of 0.1 inch of snow at an elevation of 150 feet.

Winter Weather in SOUTHWESTERN HUMBOLDT, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 14:51:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Storm total snow accumulation of 5.0 inches. Elevation 1650 feet.

Winter Weather in NORTHERN TRINITY, CALIFORNIA
From 18-FEB-18 20:00:00 to 19-FEB-18 11:49:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Report of 1.0 inch of snow at an elevation of 1256 feet.

Winter Weather in SOUTHERN HUMBOLDT INTERIOR, CALIFORNIA
From 18-FEB-18 00:00:00 to 18-FEB-18 13:10:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Observer measured 1.5 inches of snow. Some of the snow had already melted at the time of observation. 0.25 inch liquid equivalent. Location of the observation was 40.47N/-123.67W at an elevation of 2800 feet.