California

Storm History: Sierra County, California

428 episodes, 533 events since 1992

Every storm the National Weather Service has filed in Sierra County, California: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.

The record

Events
533
Deaths
1
Injuries
3
Damage
$12 million
Episodes
428

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.

Open the live radar over Sierra County

Every year

From 1996 the record holds 48 kinds of event with each office’s narrative; before that, tornadoes, hail and thunderstorm wind only, and before 1955 tornadoes alone.

By kind of event

Counted under the kind that heads each episode.

Kind of eventEventsDeathsInjuriesDamage
Heavy Snow29900$250,000
High Wind9101$2.2 million
Winter Storm3200
Heavy Rain1900
Winter Weather1900
Avalanche1700$20,000
Debris Flow1200$2,000
Dense Fog900$1,000
Flood701$7.8 million
Wildfire500$75,000
Blizzard500
Flash Flood400
Hail300
Strong Wind200$100
Tornado200$1.6 million
Cold/Wind Chill100
Thunderstorm Wind100
Ice Storm100
Dense Smoke100
Drought100$50,000
Freezing Fog100
Lightning111

The deadliest

The costliest

Damage within this county, in the dollars of its year.

The largest hail

The largest stone in each episode, which may have fallen in a neighboring county of the same episode.

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Sierra CountyEvery warning in Sierra County since 1986Every county in California

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.