California Winter Storm Tracking

Complete winter storm and winter weather information for California - from real-time warnings to historical data and comprehensive statistics dating back to 1996.

Real-Time Alerts

Active winter storm warnings in California using official National Weather Service data

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Active Warnings

Counties Affected

Last Updated

Data Source

NWS API

Active Winter Storm Warnings

Live winter storm warnings currently in effect for California

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Winter Storm Database and Statistics

Comprehensive database of winter storm events in California recorded since 1996 through the end of 2024(1,613 total records)

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Key Winter Storm Statistics

Total Winter Storms

1,613

Total Deaths

Total Injuries

Property Damage

$22.8M

Winter Storm Analysis and Trends

Detailed charts and visualizations revealing winter storm patterns by type, seasonality, and impact. These analytics show historical trends and unique characteristics of winter storm activity in this region.

Monthly Distribution

Shows winter storm frequency across different months of the year, highlighting seasonal patterns. This information helps identify peak winter storm seasons and periods of heightened risk.

Summary: In California, January is the most active month with 378 winter storm events (23% of all recorded events). The primary winter storm season occurs during January, February, December, accounting for 66% of all winter storms in this region.

Winter Storm Count by County

Identifies the counties most frequently affected by winter storms in this region. This geographical breakdown helps pinpoint winter storm hotspots and vulnerable areas.

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Summary: WEST SLOPE NORTHERN SIERRA NEVADA has experienced the highest number of winter storms (204) in California, accounting for 12.6% of all winter storm events in this state. The top three most winter storm-prone counties (WEST SLOPE NORTHERN SIERRA NEVADA, S SIERRA MTNS, and TULARE CTY MTNS) account for 31% of all winter storm activity.

Annual Winter Storm Trends

Tracks winter storm occurrences and impacts over time, revealing long-term patterns and significant events. Toggle the metrics below to customize your view.

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Property Damage Trends ($ Millions)

Visualizes the financial impact of winter storms across years using a square root scale. This approach ensures both major damage events and smaller impacts are visible on the same chart.

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Winter Storm Event Timeline

Comprehensive chronological list of all winter storm events with detailed information on each occurrence. View specifics about type, damage, casualties, and timing for individual winter storm events.

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Historical Winter Storm Events

December 13, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

2:00 PMWinter Storm

December 13, 2024 - WESTERN SISKIYOU COUNTY County

1:00 PMWinter Storm

December 13, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

1:00 PMWinter Storm

November 24, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

10:00 AMWinter Storm

November 19, 2024 - WESTERN SISKIYOU COUNTY County

2:00 PMWinter Storm

November 19, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

2:00 PMWinter Storm

November 19, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

2:00 PMWinter Storm

March 31, 2024 - NORTHERN VENTURA COUNTY MOUNTAINS County

12:00 AMWinter Storm

March 31, 2024 - EST SAN GABRIEL MOUNTAINS County

12:00 AMWinter Storm

March 29, 2024 - MT SHASTA/WESTERN PLUMAS COUNTY County

8:00 AMWinter Storm

March 29, 2024 - WEST SLOPE NORTHERN SIERRA NEVADA County

8:00 AMWinter Storm

March 4, 2024 - MODOC COUNTY County

1:00 PMWinter Storm

March 4, 2024 - WESTERN SISKIYOU COUNTY County

10:00 AMWinter Storm

March 3, 2024 - SOUTHERN TRINITY County

5:00 PMWinter Storm

March 3, 2024 - SOUTHERN TRINITY County

11:28 AMWinter Storm

March 2, 2024 - SOUTHERN HUMBOLDT INTERIOR County

5:30 PMWinter Storm

March 2, 2024 - SOUTHERN TRINITY County

5:00 PMWinter Storm

March 2, 2024 - SOUTHERN HUMBOLDT INTERIOR County

3:53 PMWinter Storm

March 2, 2024 - NORTHERN HUMBOLDT INTERIOR County

3:12 PMWinter Storm

March 2, 2024 - NORTHERN HUMBOLDT INTERIOR County

7:15 AMWinter Storm

March 1, 2024 - NORTHERN HUMBOLDT COAST County

3:54 PMWinter Storm

March 1, 2024 - NORTHERN HUMBOLDT INTERIOR County

3:30 PMWinter Storm

March 1, 2024 - NORTHERN HUMBOLDT INTERIOR County

3:29 PMWinter Storm

March 1, 2024 - SOUTHERN TRINITY County

7:00 AMWinter Storm

March 1, 2024 - MODOC COUNTY County

12:00 AMWinter Storm

March 1, 2024 - BURNEY BASIN/EASTERN SHASTA COUNTY County

12:00 AMWinter Storm

March 1, 2024 - SHASTA LAKE/NORTH SHASTA COUNTY County

12:00 AMWinter Storm

March 1, 2024 - MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO WESTERN COLUSA COUNTY County

12:00 AMWinter Storm

March 1, 2024 - WESTERN SISKIYOU COUNTY County

12:00 AMWinter Storm

March 1, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

12:00 AMWinter Storm

February 29, 2024 - MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO WESTERN COLUSA COUNTY County

4:00 AMWinter Storm

February 29, 2024 - BURNEY BASIN/EASTERN SHASTA COUNTY County

4:00 AMWinter Storm

February 29, 2024 - SHASTA LAKE/NORTH SHASTA COUNTY County

4:00 AMWinter Storm

February 28, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

4:00 PMWinter Storm

February 28, 2024 - WESTERN SISKIYOU COUNTY County

4:00 PMWinter Storm

February 28, 2024 - MODOC COUNTY County

4:00 PMWinter Storm

February 18, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

4:00 PMWinter Storm

February 18, 2024 - WESTERN SISKIYOU COUNTY County

4:00 PMWinter Storm

February 18, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

4:00 PMWinter Storm

February 13, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

10:00 PMWinter Storm

February 13, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

10:00 PMWinter Storm

February 13, 2024 - WESTERN SISKIYOU COUNTY County

10:00 PMWinter Storm

February 4, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

4:00 AMWinter Storm

February 4, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

4:00 AMWinter Storm

February 4, 2024 - WESTERN SISKIYOU COUNTY County

4:00 AMWinter Storm

February 4, 2024 - NORTHERN VENTURA COUNTY MOUNTAINS County

3:00 AMWinter Storm

February 4, 2024 - EST SAN GABRIEL MOUNTAINS County

3:00 AMWinter Storm

February 1, 2024 - EST SAN GABRIEL MOUNTAINS County

6:00 AMWinter Storm

February 1, 2024 - NORTHWESTERN LOS ANGELES COUNTY MOUNTAINS INCLUDING THE INTERSTATE 5 CORRIDOR County

6:00 AMWinter Storm

February 1, 2024 - WESTERN SAN GABRIEL MOUNTAINS INCLUDING THE HIGHWAY 14 CORRIDOR County

6:00 AMWinter Storm

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Processing California Winter Storm Data

Current Winter Storm Warnings and Recent Events

Real-Time Alerts

Active Warnings

Counties Affected

Last Updated

Data Source

Active Winter Storm Warnings

Winter Storm History and Statistics

Winter Storm Database and Statistics

Filter Winter Storm Data

Key Winter Storm Statistics

Winter Storm Analysis and Trends

Monthly Distribution

Winter Storm Count by County

Annual Winter Storm Trends

Property Damage Trends ($ Millions)

Winter Storm Event Timeline

Historical Winter Storm Events

December 13, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

December 13, 2024 - WESTERN SISKIYOU COUNTY County

December 13, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

November 24, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

November 19, 2024 - WESTERN SISKIYOU COUNTY County

November 19, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

November 19, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

March 31, 2024 - NORTHERN VENTURA COUNTY MOUNTAINS County

March 31, 2024 - EST SAN GABRIEL MOUNTAINS County

March 29, 2024 - MT SHASTA/WESTERN PLUMAS COUNTY County

March 29, 2024 - WEST SLOPE NORTHERN SIERRA NEVADA County

March 4, 2024 - MODOC COUNTY County

March 4, 2024 - WESTERN SISKIYOU COUNTY County

March 3, 2024 - SOUTHERN TRINITY County

March 3, 2024 - SOUTHERN TRINITY County

March 2, 2024 - SOUTHERN HUMBOLDT INTERIOR County

March 2, 2024 - SOUTHERN TRINITY County

March 2, 2024 - SOUTHERN HUMBOLDT INTERIOR County

March 2, 2024 - NORTHERN HUMBOLDT INTERIOR County

March 2, 2024 - NORTHERN HUMBOLDT INTERIOR County

March 1, 2024 - NORTHERN HUMBOLDT COAST County

March 1, 2024 - NORTHERN HUMBOLDT INTERIOR County

March 1, 2024 - NORTHERN HUMBOLDT INTERIOR County

March 1, 2024 - SOUTHERN TRINITY County

March 1, 2024 - MODOC COUNTY County

March 1, 2024 - BURNEY BASIN/EASTERN SHASTA COUNTY County

March 1, 2024 - SHASTA LAKE/NORTH SHASTA COUNTY County

March 1, 2024 - MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO WESTERN COLUSA COUNTY County

March 1, 2024 - WESTERN SISKIYOU COUNTY County

March 1, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

February 29, 2024 - MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO WESTERN COLUSA COUNTY County

February 29, 2024 - BURNEY BASIN/EASTERN SHASTA COUNTY County

February 29, 2024 - SHASTA LAKE/NORTH SHASTA COUNTY County

February 28, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

February 28, 2024 - WESTERN SISKIYOU COUNTY County

February 28, 2024 - MODOC COUNTY County

February 18, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

February 18, 2024 - WESTERN SISKIYOU COUNTY County

February 18, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

February 13, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

February 13, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

February 13, 2024 - WESTERN SISKIYOU COUNTY County

February 4, 2024 - NORTH CENTRAL & SOUTHEAST SISKIYOU COUNTY County

February 4, 2024 - SOUTH CENTRAL SISKIYOU COUNTY County

February 4, 2024 - WESTERN SISKIYOU COUNTY County

February 4, 2024 - NORTHERN VENTURA COUNTY MOUNTAINS County

February 4, 2024 - EST SAN GABRIEL MOUNTAINS County

February 1, 2024 - EST SAN GABRIEL MOUNTAINS County

February 1, 2024 - NORTHWESTERN LOS ANGELES COUNTY MOUNTAINS INCLUDING THE INTERSTATE 5 CORRIDOR County

February 1, 2024 - WESTERN SAN GABRIEL MOUNTAINS INCLUDING THE HIGHWAY 14 CORRIDOR County