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

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings010%
Flash flood warnings4250%2100%83 min

Each office's whole area, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS San Diego, CA: severe thunderstorm warnings8363%1323%3 min
NWS San Diego, CA: flash flood warnings36878%4547%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.

IssuedProductOfficeLasted
Jan 1, 2:53 AM PSTDense Fog AdvisorySGX7 hr
Jan 2, 4:49 AM PSTDense Fog AdvisorySGX3 hr
Jan 2, 7:35 PM PSTDense Fog AdvisorySGX14 hr
Jan 4, 12:38 PM PSTHigh Wind WatchSGX49 hr
Jan 5, 12:52 PM PSTFire Weather WatchSGX24 hr
Jan 6, 12:57 PM PSTRed Flag WarningSGX4 days
Jan 6, 1:39 PM PSTHigh Wind WarningSGX4 days
Jan 10, 12:24 PM PSTFire Weather WatchSGX15 hr
Jan 11, 3:40 AM PSTRed Flag WarningSGX5 days
Jan 13, 2:11 AM PSTWind AdvisorySGX64 hr
Jan 17, 12:59 PM PSTFire Weather WatchSGX24 hr
Jan 18, 12:54 PM PSTRed Flag WarningSGX6 days
Jan 18, 8:57 PM PSTHigh Wind WatchSGX16 hr
Jan 19, 11:57 AM PSTHigh Wind WarningSGX52 hr
Jan 20, 1:35 PM PSTFire Weather WatchSGX23 hr
Jan 22, 2:41 AM PSTHigh Wind WatchSGX9 hr
Jan 22, 12:04 PM PSTHigh Wind WarningSGX30 hr
Jan 26, 6:37 PM PSTSpecial Weather StatementSGX23 min
Feb 2, 5:38 PM PSTDense Fog AdvisorySGX16 hr
Feb 10, 1:49 PM PSTFlood WatchSGX4 days
Feb 13, 2:03 AM PSTHigh Surf AdvisorySGX68 hr
Feb 13, 1:29 PM PSTAreal Flood AdvisorySGX117 min
Feb 13, 5:17 PM PSTAreal Flood AdvisorySGX3 hr
Feb 13, 5:49 PM PSTSpecial Weather StatementSGX41 min
Feb 13, 7:31 PM PSTFlash Flood Warning Considerable damage threatSGX3 hr
Feb 22, 4:18 AM PSTDense Fog AdvisorySGX6 hr
Feb 25, 2:28 AM PSTDense Fog AdvisorySGX7 hr
Feb 26, 2:24 AM PSTDense Fog AdvisorySGX7 hr
Feb 26, 2:55 AM PSTWind AdvisorySGX37 hr
Feb 27, 2:11 AM PSTDense Fog AdvisorySGX7 hr
Feb 28, 1:42 AM PSTBeach Hazards StatementSGX20 hr
Mar 1, 2:10 AM PSTHigh Surf AdvisorySGX68 hr
Mar 7, 3:56 PM PSTAreal Flood AdvisorySGX60 min
Mar 10, 1:28 PM PDTFlood WatchSGX3 days
Mar 11, 1:26 PM PDTWind AdvisorySGX4 days
Mar 13, 2:57 AM PDTSpecial Weather StatementLOX48 min
Mar 13, 3:10 AM PDTSpecial Weather StatementSGX50 min
Mar 13, 4:01 AM PDTAreal Flood AdvisorySGX4 hr
Mar 13, 4:30 AM PDTFlash Flood WarningSGX3 hr
Mar 13, 7:30 AM PDTAreal Flood AdvisorySGX119 min
Mar 13, 1:25 PM PDTSpecial Weather StatementSGX50 min
Mar 27, 7:05 PM PDTBeach Hazards StatementSGX45 hr
Mar 29, 1:07 PM PDTWind AdvisorySGX4 days
Apr 10, 2:14 AM PDTDense Fog AdvisorySGX7 hr
Apr 10, 11:09 PM PDTDense Fog AdvisorySGX10 hr
Apr 12, 1:40 AM PDTBeach Hazards StatementSGX21 hr
Apr 26, 1:54 PM PDTBeach Hazards StatementSGX4 days
May 23, 12:55 PM PDTBeach Hazards StatementSGX4 days
May 31, 12:53 PM PDTBeach Hazards StatementSGX4 days
Jun 3, 2:44 PM PDTSpecial Weather StatementSGX46 min
Jun 3, 4:33 PM PDTAreal Flood AdvisorySGX3 hr
Jun 14, 1:17 AM PDTBeach Hazards StatementSGX46 hr
Jun 16, 9:53 AM PDTHeat AdvisorySGX58 hr
Jul 2, 12:28 PM PDTBeach Hazards StatementSGX4 days
Jul 29, 4:35 PM PDTTsunami AdvisoryAAQ39 hr
Aug 4, 12:24 PM PDTHeat AdvisorySGX7 days
Aug 18, 1:56 AM PDTExtreme Heat WatchSGX35 hr
Aug 19, 12:28 PM PDTHeat AdvisorySGX4 days
Aug 25, 4:06 PM PDTSpecial Weather StatementSGX39 min
Aug 29, 11:58 AM PDTBeach Hazards StatementSGX3 days
Aug 30, 12:19 PM PDTHeat AdvisorySGX3 days
Sep 26, 12:06 PM PDTBeach Hazards StatementSGX4 days
Oct 13, 2:15 AM PDTFlash Flood WatchSGX39 hr
Oct 14, 2:27 AM PDTWind AdvisorySGX13 hr
Oct 14, 9:43 AM PDTAreal Flood AdvisorySGX2 hr
Oct 14, 11:30 AM PDTSpecial Weather StatementSGX45 min
Oct 14, 12:10 PM PDTAreal Flood AdvisorySGX80 min
Oct 26, 12:32 PM PDTHeat AdvisorySGX3 days
Oct 28, 7:46 PM PDTDense Fog AdvisorySGX12 hr
Oct 30, 7:21 PM PDTDense Fog AdvisorySGX7 hr
Nov 5, 12:11 PM PSTBeach Hazards StatementSGX62 hr
Nov 10, 2:51 AM PSTDense Fog AdvisorySGX5 hr
Nov 11, 2:17 AM PSTDense Fog AdvisorySGX6 hr
Nov 13, 11:49 AM PSTFlood WatchSGX58 hr
Nov 14, 8:18 PM PSTBeach Hazards StatementSGX19 hr
Nov 15, 8:34 AM PSTAreal Flood AdvisorySGX118 min
Nov 15, 8:47 AM PSTAreal Flood AdvisorySGX117 min
Nov 15, 1:20 PM PSTAreal Flood AdvisorySGX119 min
Nov 15, 2:01 PM PSTAreal Flood AdvisorySGX119 min
Nov 16, 1:14 AM PSTAreal Flood AdvisorySGX117 min
Nov 16, 9:32 AM PSTSpecial Weather StatementLOX28 min
Nov 16, 10:16 AM PSTSpecial Weather StatementLOX29 min
Nov 17, 6:49 PM PSTAreal Flood AdvisorySGX59 min
Nov 20, 9:31 PM PSTAreal Flood AdvisorySGX118 min
Nov 20, 10:00 PM PSTFlash Flood Warning Considerable damage threatSGX2 hr
Nov 20, 10:36 PM PSTAreal Flood AdvisorySGX3 hr
Nov 21, 1:39 AM PSTAreal Flood AdvisorySGX119 min
Nov 21, 3:37 AM PSTFlash Flood Warning Considerable damage threatSGX113 min
Nov 28, 2:08 AM PSTDense Fog AdvisorySGX7 hr
Dec 1, 12:05 PM PSTBeach Hazards StatementSGX4 days
Dec 12, 12:17 AM PSTDense Fog AdvisorySGX9 hr
Dec 12, 1:20 PM PSTDense Fog AdvisorySGX21 hr
Dec 16, 12:55 AM PSTDense Fog AdvisorySGX8 hr
Dec 16, 12:41 PM PSTDense Fog AdvisorySGX21 hr
Dec 18, 9:08 PM PSTDense Fog AdvisorySGX13 hr
Dec 21, 11:47 AM PSTFlood WatchSGX4 days
Dec 22, 2:18 AM PSTDense Fog AdvisorySGX8 hr
Dec 22, 12:19 PM PSTWind AdvisorySGX58 hr
Dec 23, 1:33 AM PSTHigh Surf AdvisorySGX4 days
Dec 24, 7:22 AM PSTMesoscale DiscussionSPC113 min
Dec 24, 10:52 AM PSTAreal Flood AdvisorySGX7 hr
Dec 24, 11:23 AM PSTSpecial Weather StatementSGX52 min
Dec 24, 1:40 PM PSTAreal Flood AdvisorySGX3 hr
Dec 27, 3:13 PM PSTHigh Wind WatchSGX21 hr
Dec 28, 11:56 AM PSTWind AdvisorySGX49 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

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.