Alert archive / Texas / San Jacinto County

Weather alerts in San Jacinto County, Texas, 2026

110 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

San Jacinto County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts
110
Warnings
31
Watches
11
Advisories
27
Busiest month
September22 alerts
Busiest day
September 2, 202612 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

San Jacinto County, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings10280%0
Flash flood warnings8450%0

Each office's whole area, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Houston/Galveston, TX: tornado warnings90100%0
NWS Houston/Galveston, TX: severe thunderstorm warnings1093370%6975%15 min
NWS Houston/Galveston, TX: flash flood warnings522748%7783%110 min

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 7, 12:09 AM CSTDense Fog AdvisoryHGX10 hr
Jan 21, 1:18 PM CSTWinter Storm WatchHGX48 hr
Jan 21, 1:30 PM CSTExtreme Cold WatchHGX48 hr
Jan 21, 11:24 PM CSTDense Fog AdvisoryHGX10 hr
Jan 22, 9:12 AM CSTDense Fog AdvisoryHGX48 min
Jan 23, 12:50 PM CSTIce Storm WarningHGX47 hr
Jan 23, 1:00 PM CSTExtreme Cold WatchHGX21 hr
Jan 23, 1:00 PM CSTExtreme Cold WarningHGX4 days
Jan 24, 10:52 PM CSTMesoscale DiscussionSPC4 hr
Jan 29, 11:35 AM CSTCold Weather AdvisoryHGX46 hr
Jan 29, 11:03 PM CSTFreeze WatchHGX36 hr
Jan 31, 11:18 AM CSTFreeze WarningHGX22 hr
Feb 9, 3:42 AM CSTDense Fog AdvisoryHGX5 hr
Feb 14, 2:05 PM CSTMesoscale DiscussionSPC2 hr
Feb 14, 3:49 PM CSTTornado WatchSPC5 hr
Feb 14, 5:10 PM CSTSpecial Weather StatementHGX65 min
Feb 27, 5:17 AM CSTDense Fog AdvisoryHGX6 hr
Mar 7, 4:03 PM CSTSpecial Weather StatementHGX27 min
Mar 7, 5:37 PM CSTSpecial Weather StatementHGX23 min
Mar 11, 4:45 AM CDTSpecial Weather StatementHGX30 min
Mar 11, 5:16 AM CDTSpecial Weather StatementHGX29 min
Mar 11, 7:13 AM CDTMesoscale DiscussionSPC2 hr
Mar 11, 10:15 AM CDTMesoscale DiscussionSPC3 hr
Mar 11, 11:25 AM CDTTornado WatchSPC9 hr
Mar 11, 12:35 PM CDTSpecial Weather StatementHGX40 min
Mar 11, 12:40 PM CDTSpecial Weather StatementHGX35 min
Mar 11, 1:12 PM CDTSpecial Weather StatementHGX63 min
Mar 14, 1:04 PM CDTFire Weather WatchHGX24 hr
Mar 14, 1:11 PM CDTWind AdvisoryHGX53 hr
Mar 15, 12:55 PM CDTRed Flag WarningHGX30 hr
Mar 15, 6:11 PM CDTMesoscale DiscussionSPC2 hr
Mar 15, 6:17 PM CDTSpecial Weather StatementHGX43 min
Mar 15, 6:30 PM CDTSevere Thunderstorm WarningHGX45 min
Mar 15, 7:05 PM CDTSevere Thunderstorm WarningHGX40 min
Mar 15, 7:27 PM CDTSevere Thunderstorm WarningHGX33 min
Mar 16, 12:08 PM CDTFreeze WarningHGX21 hr
Apr 4, 12:14 PM CDTMesoscale DiscussionSPC2 hr
Apr 4, 5:40 PM CDTMesoscale DiscussionSPC2 hr
Apr 30, 12:21 PM CDTFlood WatchHGX33 hr
May 8, 7:04 AM CDTSpecial Weather StatementHGX26 min
May 9, 2:46 PM CDTMesoscale DiscussionSPC119 min
May 10, 6:01 PM CDTMesoscale DiscussionSPC89 min
May 10, 6:11 PM CDTSpecial Weather StatementHGX34 min
May 10, 6:27 PM CDTSevere Thunderstorm WarningHGX33 min
May 10, 7:00 PM CDTSevere Thunderstorm WarningHGX30 min
May 10, 7:31 PM CDTSpecial Weather StatementHGX29 min
May 11, 2:31 AM CDTSpecial Weather StatementHGX59 min
May 19, 6:10 PM CDTSpecial Weather StatementHGX50 min
May 19, 6:59 PM CDTSpecial Weather StatementHGX46 min
May 19, 7:46 PM CDTSpecial Weather StatementHGX44 min
May 19, 8:32 PM CDTSpecial Weather StatementHGX43 min
May 20, 12:41 PM CDTFlood WatchHGX4 days
May 23, 7:24 AM CDTSpecial Weather StatementHGX36 min
May 23, 4:31 PM CDTAreal Flood AdvisoryHGX119 min
May 27, 2:10 AM CDTSpecial Weather StatementHGX65 min
May 27, 2:21 AM CDTMesoscale DiscussionSPC114 min
May 27, 2:44 AM CDTSevere Thunderstorm WarningHGX31 min
May 27, 3:10 AM CDTSpecial Weather StatementHGX35 min
Jun 2, 5:41 PM CDTSevere Thunderstorm WarningHGX34 min
Jun 14, 11:29 AM CDTFlood WatchHGX3 days
Jun 16, 8:07 AM CDTAreal Flood AdvisoryHGX3 hr
Jun 16, 9:56 AM CDTAreal Flood AdvisoryHGX3 hr
Jun 16, 11:08 AM CDTFlash Flood WarningHGX2 hr
Jun 16, 11:33 AM CDTAreal Flood AdvisoryHGX3 hr
Jun 17, 12:29 PM CDTHeat AdvisoryHGX21 hr
Jun 18, 9:51 AM CDTExtreme Heat WarningHGX10 hr
Jun 18, 9:56 AM CDTHeat AdvisoryHGX55 hr
Jun 19, 4:13 PM CDTAreal Flood AdvisoryHGX3 hr
Jun 21, 12:16 PM CDTRiver Flood WarningHGX9 hr
Jul 5, 7:11 PM CDTSpecial Weather StatementHGX34 min
Jul 5, 7:39 PM CDTSpecial Weather StatementHGX36 min
Jul 7, 5:14 PM CDTSpecial Weather StatementHGX46 min
Jul 7, 5:59 PM CDTSpecial Weather StatementHGX46 min
Jul 7, 6:15 PM CDTSevere Thunderstorm WarningHGX20 min
Jul 7, 6:22 PM CDTAreal Flood AdvisoryHGX113 min
Jul 7, 6:44 PM CDTSpecial Weather StatementHGX31 min
Jul 14, 7:57 AM CDTAreal Flood AdvisoryHGX5 hr
Jul 20, 1:00 PM CDTHeat AdvisoryHGX31 hr
Jul 21, 12:50 PM CDTExtreme Heat WarningHGX31 hr
Jul 22, 3:13 PM CDTMesoscale DiscussionSPC2 hr
Jul 27, 11:17 AM CDTHeat AdvisoryHGX32 hr
Aug 6, 5:01 PM CDTSpecial Weather StatementHGX29 min
Aug 19, 11:55 AM CDTHeat AdvisoryHGX7 days
Aug 22, 2:46 PM CDTMesoscale DiscussionSPC119 min
Aug 22, 5:01 PM CDTSpecial Weather StatementHGX44 min
Aug 27, 2:20 PM CDTMesoscale DiscussionSPC115 min
Aug 27, 3:46 PM CDTSpecial Weather StatementHGX29 min
Aug 31, 10:14 AM CDTFlood WatchHGX3 days
Sep 1, 2:05 PM CDTWind AdvisoryHGX29 hr
Sep 1, 10:24 PM CDTAreal Flood AdvisoryHGX3 hr
Sep 2, 5:51 AM CDTFlash Flood WarningHGX4 hr
Sep 2, 6:04 AM CDTFlash Flood Warning Considerable damage threatHGX3 hr
Sep 2, 7:16 AM CDTAreal Flood AdvisoryHGX119 min
Sep 2, 10:35 AM CDTRiver Flood WarningHGX29 hr
Sep 2, 2:35 PM CDTAreal Flood AdvisoryHGX3 hr
Sep 2, 4:41 PM CDTSevere Thunderstorm WarningHGX49 min
Sep 2, 4:42 PM CDTAreal Flood AdvisoryHGX36 min
Sep 2, 4:49 PM CDTFlash Flood Warning Considerable damage threatHGX6 hr
Sep 2, 5:18 PM CDTFlash Flood WarningHGX4 hr
Sep 2, 5:30 PM CDTSevere Thunderstorm WarningHGX30 min
Sep 2, 6:15 PM CDTFlash Flood WarningHGX3 hr
Sep 2, 9:09 PM CDTFlash Flood WarningHGX96 min
Sep 2, 10:35 PM CDTAreal Flood WarningHGX13 hr
Sep 2, 10:45 PM CDTAreal Flood WarningHGX13 hr
Sep 3, 8:54 AM CDTFlash Flood WarningHGX4 hr
Sep 3, 12:05 PM CDTAreal Flood WarningHGX3 hr
Sep 3, 12:38 PM CDTAreal Flood AdvisoryHGX2 hr
Sep 3, 12:42 PM CDTAreal Flood WarningHGX4 hr
Sep 12, 11:20 PM CDTHeat AdvisoryHGX19 hr
Sep 13, 12:14 PM CDTHeat AdvisoryHGX55 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 archive2025

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.