Weather Alerts Map

Sunnyvale weather alerts

There are no active weather alerts for Sunnyvale, CA right now.

The National Weather Service issues alerts for Sunnyvale as part of Santa Clara County.

Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS

Map data: NWS, OpenFreeMap, OpenStreetMap

Tornado history within 25 miles of Sunnyvale

12 tornadoes have been recorded within 25 miles of Sunnyvale since 1950, injuring 8 people. The most recent was on December 14, 2024 (rated EF1).

EF0: 6EF06EF1: 4EF14EF2: 2EF22EF3: 0EF3EF4: 0EF4EF5: 0EF5
Tornadoes by (E)F rating

Strongest tornadoes within 25 miles of Sunnyvale

DateRatingCountyPath lengthWidthDeathsInjuries
January 11, 1951F2Santa Clara County5.7 mi10 yd00
May 5, 1998F2Santa Clara County0.6 mi100 yd01
December 14, 2024EF1Santa Cruz County0.3 mi30 yd05
January 14, 1980F1Stanislaus County0.3 mi67 yd01
May 5, 1998F1Santa Clara County0.3 mi80 yd01

Most recent tornadoes

DateRatingCountyPath lengthWidthDeathsInjuries
December 14, 2024EF1Santa Cruz County0.3 mi30 yd05
May 5, 1998F2Santa Clara County0.6 mi100 yd01
May 5, 1998F1Santa Clara County0.3 mi80 yd01
February 7, 1998F0San Mateo County0.2 mi50 yd00
February 6, 1998F0Santa Clara County0.1 mi30 yd00

California tornado history and map →

How often alerts are issued for Santa Clara County

Alert type2016–2025Last issued
Flood Advisory172November 13, 2026
Wind Advisory68May 18, 2026
Frost Advisory48March 7, 2025
Heat Advisory48October 3, 2026
Flood Warning39February 13, 2025
Freeze Warning31February 10, 2025
Flood Watch26December 21, 2025
Flash Flood Warning20December 25, 2025
Dense Fog Advisory20December 15, 2025
Severe Thunderstorm Warning16December 26, 2025

Full Santa Clara County alert history →

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