Alert archive / California / Orange County
Weather alerts in Orange County, California, 2025
105 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Orange County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 105
- Warnings
- 10
- Watches
- 14
- Advisories
- 56
- Busiest month
- November19 alerts
- Busiest day
- March 13, 20256 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Orange County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 1 | 0% | |||
| Flash flood warnings | 4 | 2 | 50% | 2 | 100% | 83 min |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS San Diego, CA: severe thunderstorm warnings | 8 | 3 | 63% | 13 | 23% | 3 min |
| NWS San Diego, CA: flash flood warnings | 36 | 8 | 78% | 45 | 47% | 208 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 2:53 AM PST | Dense Fog Advisory | SGX | 7 hr |
| Jan 2, 4:49 AM PST | Dense Fog Advisory | SGX | 3 hr |
| Jan 2, 7:35 PM PST | Dense Fog Advisory | SGX | 14 hr |
| Jan 4, 12:38 PM PST | High Wind Watch | SGX | 49 hr |
| Jan 5, 12:52 PM PST | Fire Weather Watch | SGX | 24 hr |
| Jan 6, 12:57 PM PST | Red Flag Warning | SGX | 4 days |
| Jan 6, 1:39 PM PST | High Wind Warning | SGX | 4 days |
| Jan 10, 12:24 PM PST | Fire Weather Watch | SGX | 15 hr |
| Jan 11, 3:40 AM PST | Red Flag Warning | SGX | 5 days |
| Jan 13, 2:11 AM PST | Wind Advisory | SGX | 64 hr |
| Jan 17, 12:59 PM PST | Fire Weather Watch | SGX | 24 hr |
| Jan 18, 12:54 PM PST | Red Flag Warning | SGX | 6 days |
| Jan 18, 8:57 PM PST | High Wind Watch | SGX | 16 hr |
| Jan 19, 11:57 AM PST | High Wind Warning | SGX | 52 hr |
| Jan 20, 1:35 PM PST | Fire Weather Watch | SGX | 23 hr |
| Jan 22, 2:41 AM PST | High Wind Watch | SGX | 9 hr |
| Jan 22, 12:04 PM PST | High Wind Warning | SGX | 30 hr |
| Jan 26, 6:37 PM PST | Special Weather Statement | SGX | 23 min |
| Feb 2, 5:38 PM PST | Dense Fog Advisory | SGX | 16 hr |
| Feb 10, 1:49 PM PST | Flood Watch | SGX | 4 days |
| Feb 13, 2:03 AM PST | High Surf Advisory | SGX | 68 hr |
| Feb 13, 1:29 PM PST | Areal Flood Advisory | SGX | 117 min |
| Feb 13, 5:17 PM PST | Areal Flood Advisory | SGX | 3 hr |
| Feb 13, 5:49 PM PST | Special Weather Statement | SGX | 41 min |
| Feb 13, 7:31 PM PST | Flash Flood Warning | SGX | 3 hr |
| Feb 22, 4:18 AM PST | Dense Fog Advisory | SGX | 6 hr |
| Feb 25, 2:28 AM PST | Dense Fog Advisory | SGX | 7 hr |
| Feb 26, 2:24 AM PST | Dense Fog Advisory | SGX | 7 hr |
| Feb 26, 2:55 AM PST | Wind Advisory | SGX | 37 hr |
| Feb 27, 2:11 AM PST | Dense Fog Advisory | SGX | 7 hr |
| Feb 28, 1:42 AM PST | Beach Hazards Statement | SGX | 20 hr |
| Mar 1, 2:10 AM PST | High Surf Advisory | SGX | 68 hr |
| Mar 7, 3:56 PM PST | Areal Flood Advisory | SGX | 60 min |
| Mar 10, 1:28 PM PDT | Flood Watch | SGX | 3 days |
| Mar 11, 1:26 PM PDT | Wind Advisory | SGX | 4 days |
| Mar 13, 2:57 AM PDT | Special Weather Statement | LOX | 48 min |
| Mar 13, 3:10 AM PDT | Special Weather Statement | SGX | 50 min |
| Mar 13, 4:01 AM PDT | Areal Flood Advisory | SGX | 4 hr |
| Mar 13, 4:30 AM PDT | Flash Flood Warning | SGX | 3 hr |
| Mar 13, 7:30 AM PDT | Areal Flood Advisory | SGX | 119 min |
| Mar 13, 1:25 PM PDT | Special Weather Statement | SGX | 50 min |
| Mar 27, 7:05 PM PDT | Beach Hazards Statement | SGX | 45 hr |
| Mar 29, 1:07 PM PDT | Wind Advisory | SGX | 4 days |
| Apr 10, 2:14 AM PDT | Dense Fog Advisory | SGX | 7 hr |
| Apr 10, 11:09 PM PDT | Dense Fog Advisory | SGX | 10 hr |
| Apr 12, 1:40 AM PDT | Beach Hazards Statement | SGX | 21 hr |
| Apr 26, 1:54 PM PDT | Beach Hazards Statement | SGX | 4 days |
| May 23, 12:55 PM PDT | Beach Hazards Statement | SGX | 4 days |
| May 31, 12:53 PM PDT | Beach Hazards Statement | SGX | 4 days |
| Jun 3, 2:44 PM PDT | Special Weather Statement | SGX | 46 min |
| Jun 3, 4:33 PM PDT | Areal Flood Advisory | SGX | 3 hr |
| Jun 14, 1:17 AM PDT | Beach Hazards Statement | SGX | 46 hr |
| Jun 16, 9:53 AM PDT | Heat Advisory | SGX | 58 hr |
| Jul 2, 12:28 PM PDT | Beach Hazards Statement | SGX | 4 days |
| Jul 29, 4:35 PM PDT | Tsunami Advisory | AAQ | 39 hr |
| Aug 4, 12:24 PM PDT | Heat Advisory | SGX | 7 days |
| Aug 18, 1:56 AM PDT | Extreme Heat Watch | SGX | 35 hr |
| Aug 19, 12:28 PM PDT | Heat Advisory | SGX | 4 days |
| Aug 25, 4:06 PM PDT | Special Weather Statement | SGX | 39 min |
| Aug 29, 11:58 AM PDT | Beach Hazards Statement | SGX | 3 days |
| Aug 30, 12:19 PM PDT | Heat Advisory | SGX | 3 days |
| Sep 26, 12:06 PM PDT | Beach Hazards Statement | SGX | 4 days |
| Oct 13, 2:15 AM PDT | Flash Flood Watch | SGX | 39 hr |
| Oct 14, 2:27 AM PDT | Wind Advisory | SGX | 13 hr |
| Oct 14, 9:43 AM PDT | Areal Flood Advisory | SGX | 2 hr |
| Oct 14, 11:30 AM PDT | Special Weather Statement | SGX | 45 min |
| Oct 14, 12:10 PM PDT | Areal Flood Advisory | SGX | 80 min |
| Oct 26, 12:32 PM PDT | Heat Advisory | SGX | 3 days |
| Oct 28, 7:46 PM PDT | Dense Fog Advisory | SGX | 12 hr |
| Oct 30, 7:21 PM PDT | Dense Fog Advisory | SGX | 7 hr |
| Nov 5, 12:11 PM PST | Beach Hazards Statement | SGX | 62 hr |
| Nov 10, 2:51 AM PST | Dense Fog Advisory | SGX | 5 hr |
| Nov 11, 2:17 AM PST | Dense Fog Advisory | SGX | 6 hr |
| Nov 13, 11:49 AM PST | Flood Watch | SGX | 58 hr |
| Nov 14, 8:18 PM PST | Beach Hazards Statement | SGX | 19 hr |
| Nov 15, 8:34 AM PST | Areal Flood Advisory | SGX | 118 min |
| Nov 15, 8:47 AM PST | Areal Flood Advisory | SGX | 117 min |
| Nov 15, 1:20 PM PST | Areal Flood Advisory | SGX | 119 min |
| Nov 15, 2:01 PM PST | Areal Flood Advisory | SGX | 119 min |
| Nov 16, 1:14 AM PST | Areal Flood Advisory | SGX | 117 min |
| Nov 16, 9:32 AM PST | Special Weather Statement | LOX | 28 min |
| Nov 16, 10:16 AM PST | Special Weather Statement | LOX | 29 min |
| Nov 17, 6:49 PM PST | Areal Flood Advisory | SGX | 59 min |
| Nov 20, 9:31 PM PST | Areal Flood Advisory | SGX | 118 min |
| Nov 20, 10:00 PM PST | Flash Flood Warning | SGX | 2 hr |
| Nov 20, 10:36 PM PST | Areal Flood Advisory | SGX | 3 hr |
| Nov 21, 1:39 AM PST | Areal Flood Advisory | SGX | 119 min |
| Nov 21, 3:37 AM PST | Flash Flood Warning | SGX | 113 min |
| Nov 28, 2:08 AM PST | Dense Fog Advisory | SGX | 7 hr |
| Dec 1, 12:05 PM PST | Beach Hazards Statement | SGX | 4 days |
| Dec 12, 12:17 AM PST | Dense Fog Advisory | SGX | 9 hr |
| Dec 12, 1:20 PM PST | Dense Fog Advisory | SGX | 21 hr |
| Dec 16, 12:55 AM PST | Dense Fog Advisory | SGX | 8 hr |
| Dec 16, 12:41 PM PST | Dense Fog Advisory | SGX | 21 hr |
| Dec 18, 9:08 PM PST | Dense Fog Advisory | SGX | 13 hr |
| Dec 21, 11:47 AM PST | Flood Watch | SGX | 4 days |
| Dec 22, 2:18 AM PST | Dense Fog Advisory | SGX | 8 hr |
| Dec 22, 12:19 PM PST | Wind Advisory | SGX | 58 hr |
| Dec 23, 1:33 AM PST | High Surf Advisory | SGX | 4 days |
| Dec 24, 7:22 AM PST | Mesoscale Discussion | SPC | 113 min |
| Dec 24, 10:52 AM PST | Areal Flood Advisory | SGX | 7 hr |
| Dec 24, 11:23 AM PST | Special Weather Statement | SGX | 52 min |
| Dec 24, 1:40 PM PST | Areal Flood Advisory | SGX | 3 hr |
| Dec 27, 3:13 PM PST | High Wind Watch | SGX | 21 hr |
| Dec 28, 11:56 AM PST | Wind Advisory | SGX | 49 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 11 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 1 |
| Flood Watch | 4 |
| Areal Flood Advisory | 19 |
| Heat | |
| Extreme Heat Watch | 1 |
| Heat Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 4 |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 21 |
| Coast and beach | |
| High Surf Advisory | 3 |
| Tsunami Advisory | 1 |
| Beach Hazards Statement | 13 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.