San Joaquin County, California weather alerts
No watches, warnings or advisories are in force for San Joaquin County.
Checked Sun, Sep 20, 2026, 9:48 AM PDT. Times are Pacific Daylight Time.
Warnings on the map
Every watch, warning and advisory the National Weather Service has in force over San Joaquin County, California. Open it for the live map, where it pans and zooms.
Open the live map with warnings and watches
Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.
Alerts in force
Nothing is in force for San Joaquin County right now. Its warnings come from the National Weather Service and appear here within a minute of being issued; every one of the past year is below.
The past year in San Joaquin County
In the past year the National Weather Service issued 25 alerts for San Joaquin County, including 8 severe thunderstorm warnings, 1 red flag warning and 1 tornado warning.
| Product | Issued | Most recent |
|---|---|---|
| Severe Thunderstorm Warning | 8 | Apr 10, 2026 |
| Red Flag Warning | 1 | May 16, 2026 |
| Tornado Warning | 1 | Apr 10, 2026 |
| Fire Weather Watch | 1 | May 16, 2026 |
| Flood Advisory | 9 | Apr 21, 2026 |
| Heat Advisory | 3 | Sep 9, 2026 |
| Wind Advisory | 2 | May 16, 2026 |
Warnings issued
- Red Flag Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
Every alert, most recent first
- Heat Advisory
- Heat Advisory
- Heat Advisory
- Wind Advisory
- Fire Weather Watch
- Red Flag Warning
- Flood Advisory
- Wind Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Tornado Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Flood Advisory
- Flood Advisory
From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each date links to the event at the IEM.
Nearby
The counties around San Joaquin County, with what is in force in each.
What this means
- Warning
- The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.
- Watch
- Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.
- Advisory
- A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.
- Statement
- Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.
Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.
Sources
Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.