Lightning TrackerSan Jose storms: live alerts, hail & tornado history
Live watches and warnings for San Jose, CA, the 48-hour thunderstorm outlook, and every hail, damaging-wind and tornado report within 25 miles since 2016.
Live alerts for San Jose, CA
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Storm outlook, next 48 hours
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Severe weather in San Jose by the numbers
Severe storms are occasional in San Jose: since 2016, spotters and emergency managers have filed 61 severe-weather reports within 25 miles of the city — 47 hail reports, 13 damaging-wind reports and 1 tornado report. On average that is 2.9 days a year with at least one report.
Storm season here peaks in January, February, March, when 77% of all reports were filed.
In the last 12 months there were 0 hail reports, 5 wind reports and 0 tornado reports around San Jose.
Latest storm reports near San Jose
| Date | Report | Where |
|---|---|---|
| Feb 17, 2026 | Damaging wind | 19 mi S · Santa Cruz Co. |
| Dec 25, 2025 | Damaging wind | 12 mi S |
| Dec 24, 2025 | Damaging wind | 13 mi W |
| Dec 14, 2024 | Tornado EF1 | 22 mi S |
| Apr 4, 2024 | Damaging wind | 24 mi S |
| Mar 30, 2024 | Hail 0.25″ | 13 mi SE |
| Feb 19, 2024 | Damaging wind | 19 mi SW |
| Feb 4, 2024 | Damaging wind | 6 mi SE |
| Mar 29, 2023 | Hail 0.25″ | 21 mi S |
| Mar 15, 2021 | Hail 0.25″ | 23 mi N |
One line per day and type — the closest report that day. Distance and direction from the city centre. The latest SPC reports are preliminary until NOAA finalises them.
Storm reports by year
Storm season in San Jose
All hail, wind and tornado reports within 25 miles, 2016–2026, by month.
Hail in San Jose
San Jose averages 2.0 days a year with hail reported nearby. The biggest stone on record since 2016 was 0.75 inches — about the size of a penny — reported 7 miles from the city centre on Apr 6, 2020. Hail of 1 inch (quarter size) or larger is what makes a thunderstorm severe; see the hail size chart.
Tornadoes near San Jose
There have been 1 tornado report within 25 miles of San Jose since 2016; the strongest was rated EF1 (Dec 14, 2024, 22 miles from the city centre). A tornado warning means a tornado is occurring or imminent — take shelter immediately.
Storm alerts for San Jose on your iPhone
Lightning Tracker shows storm risk around you, live severe-weather alerts and how close the storm is — free on the App Store.
Storm trackers near San Jose
Questions about storms in San Jose
Does San Jose get a lot of severe storms?
San Jose averages 2.9 days a year with at least one hail, damaging-wind or tornado report within 25 miles, based on NOAA Storm Prediction Center reports 2016–2025.
When is storm season in San Jose?
Most severe-weather reports around San Jose come in January, February, March.
What is the biggest hail recorded near San Jose?
0.75 inches (penny size) on Apr 6, 2020, 7 miles from the city centre.
Have tornadoes hit near San Jose?
Yes — 1 tornado report within 25 miles since 2016, the strongest rated EF1 on Dec 14, 2024.
How do I get storm alerts for San Jose?
The live panel on this page shows every active National Weather Service watch and warning for San Jose, CA. For alerts on your phone, Lightning Tracker for iPhone shows storm risk and warnings for your location.
How this page works: storm reports are NOAA Storm Prediction Center local storm reports (final database 2016–2025, preliminary daily reports after that) within 25 miles of San Jose, CA. They are reports of hail, damaging wind and tornadoes — not lightning strike counts, which no free public dataset provides at city level. Live alerts come from the National Weather Service API, the outlook from Open-Meteo forecast models. Updated Oct 7, 2026.