Alert archive / Texas / San Jacinto County

Weather alerts in San Jacinto County, Texas, 2013

115 weather alerts in 2013, 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 2013. Tap one for its archive.

Alerts
115
Warnings
36
Watches
16
Advisories
27
Busiest month
May22 alerts
Busiest day
May 9, 20137 alerts

Over time

By month

Warning verification

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

1 of 5 tornado warnings covering San Jacinto County in 2013 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 17 minutes after it went out.

San Jacinto County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings5180%1100%17 min
Severe thunderstorm warnings211243%450%16 min
Flash flood warnings2150%0

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Houston/Galveston, TX: tornado warnings11191%250%17 min
NWS Houston/Galveston, TX: severe thunderstorm warnings1355261%11079%20 min
NWS Houston/Galveston, TX: flash flood warnings22577%2726%81 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 7, 3:23 PM CSTFlash Flood WatchHGX54 hr
Jan 19, 11:12 PM CSTDense Fog AdvisoryHGX10 hr
Jan 20, 11:51 PM CSTDense Fog AdvisoryHGX10 hr
Jan 22, 10:56 PM CSTDense Fog AdvisoryHGX11 hr
Jan 26, 3:27 PM CSTDense Fog AdvisoryHGX6 hr
Jan 26, 9:38 PM CSTDense Fog AdvisoryHGX5 hr
Jan 29, 10:25 PM CSTSevere Thunderstorm WarningHGX50 min
Jan 30, 4:23 AM CSTWind AdvisoryHGX12 hr
Jan 30, 7:33 AM CSTRed Flag WarningHGX10 hr
Feb 5, 12:54 AM CSTDense Fog AdvisoryHGX8 hr
Feb 10, 6:20 AM CSTMesoscale DiscussionSPC85 min
Feb 10, 6:58 AM CSTTornado WatchSPC7 hr
Feb 18, 5:29 AM CSTWind AdvisoryHGX11 hr
Feb 18, 1:31 PM CSTTornado WarningHGX29 min
Feb 18, 1:46 PM CSTTornado WarningHGX29 min
Feb 18, 2:05 PM CSTTornado WarningHGX25 min
Feb 18, 2:08 PM CSTMesoscale DiscussionSPC67 min
Feb 18, 5:06 PM CSTMesoscale DiscussionSPC84 min
Feb 21, 7:22 AM CSTMesoscale DiscussionSPC83 min
Feb 21, 10:53 AM CSTMesoscale DiscussionSPC97 min
Feb 21, 11:36 AM CSTSpecial Weather StatementHGX39 min
Feb 21, 12:01 PM CSTSevere Thunderstorm WarningHGX29 min
Feb 21, 12:32 PM CSTSpecial Weather StatementHGX43 min
Feb 21, 1:11 PM CSTTornado WarningHGX49 min
Feb 24, 6:16 AM CSTFire Weather WatchHGX9 hr
Feb 24, 3:13 PM CSTRed Flag WarningHGX30 hr
Feb 24, 3:14 PM CSTWind AdvisoryHGX42 hr
Mar 4, 2:58 AM CSTFire Weather WatchHGX12 hr
Mar 4, 3:08 PM CSTRed Flag WarningHGX27 hr
Mar 5, 4:39 AM CSTWind AdvisoryHGX13 hr
Mar 10, 7:00 AM CDTSpecial Weather StatementHGX60 min
Mar 10, 7:31 AM CDTSevere Thunderstorm WarningHGX44 min
Mar 10, 7:37 AM CDTTornado WarningHGX23 min
Mar 23, 5:28 AM CDTFire Weather WatchHGX9 hr
Mar 23, 2:49 PM CDTWind AdvisoryHGX25 hr
Mar 23, 2:57 PM CDTRed Flag WarningHGX28 hr
Mar 25, 3:22 PM CDTFreeze WarningHGX17 hr
Mar 31, 12:17 PM CDTSevere Thunderstorm WatchSPC6 hr
Mar 31, 12:54 PM CDTSevere Thunderstorm WarningHGX51 min
Mar 31, 1:44 PM CDTSevere Thunderstorm WarningHGX46 min
Mar 31, 2:32 PM CDTMesoscale DiscussionSPC58 min
Mar 31, 3:08 PM CDTSevere Thunderstorm WarningHGX37 min
Apr 2, 3:54 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 2, 8:15 PM CDTMesoscale DiscussionSPC60 min
Apr 27, 5:05 PM CDTSevere Thunderstorm WatchSPC8 hr
Apr 27, 6:43 PM CDTMesoscale DiscussionSPC2 hr
Apr 27, 10:13 PM CDTMesoscale DiscussionSPC2 hr
May 1, 9:56 PM CDTWind AdvisoryHGX45 hr
May 4, 10:15 AM CDTRed Flag WarningHGX8 hr
May 9, 2:52 PM CDTMesoscale DiscussionSPC53 min
May 9, 3:34 PM CDTSevere Thunderstorm WatchSPC6 hr
May 9, 5:22 PM CDTSevere Thunderstorm WarningHGX38 min
May 9, 5:57 PM CDTSevere Thunderstorm WarningHGX48 min
May 9, 6:17 PM CDTSevere Thunderstorm WarningHGX43 min
May 9, 6:40 PM CDTMesoscale DiscussionSPC2 hr
May 9, 6:41 PM CDTSpecial Weather StatementHGX64 min
May 9, 7:04 PM CDTSevere Thunderstorm WarningHGX41 min
May 9, 7:36 PM CDTSevere Thunderstorm WarningHGX39 min
May 9, 9:21 PM CDTAreal Flood AdvisoryHGX114 min
May 9, 11:17 PM CDTAreal Flood AdvisoryHGX58 min
May 10, 4:18 AM CDTFlash Flood WatchHGX24 hr
May 10, 9:02 AM CDTSevere Thunderstorm WatchSPC5 hr
May 16, 1:26 AM CDTMesoscale DiscussionSPC94 min
May 21, 6:55 PM CDTSevere Thunderstorm WatchSPC6 hr
May 21, 11:20 PM CDTMesoscale DiscussionSPC55 min
May 22, 12:27 AM CDTSpecial Weather StatementHGX63 min
May 22, 1:21 AM CDTSpecial Weather StatementHGX24 min
May 22, 3:35 AM CDTSevere Thunderstorm WarningHGX55 min
May 22, 3:49 AM CDTAreal Flood AdvisoryHGX3 hr
Jun 2, 5:29 AM CDTAreal Flood AdvisoryHGX2 hr
Jun 2, 5:50 AM CDTSevere Thunderstorm WarningHGX40 min
Jun 2, 6:29 AM CDTSevere Thunderstorm WarningHGX46 min
Jun 2, 6:56 AM CDTFlash Flood WarningHGX3 hr
Jun 6, 12:28 PM CDTMesoscale DiscussionSPC92 min
Jun 6, 2:28 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 6, 4:13 PM CDTSevere Thunderstorm WarningHGX47 min
Jun 6, 4:41 PM CDTSevere Thunderstorm WarningHGX64 min
Jun 6, 4:57 PM CDTMesoscale DiscussionSPC2 hr
Jun 6, 5:09 PM CDTSevere Thunderstorm WarningHGX36 min
Jun 6, 5:34 PM CDTSevere Thunderstorm WarningHGX41 min
Jun 9, 2:17 PM CDTAreal Flood AdvisoryHGX118 min
Jun 18, 3:17 PM CDTSpecial Weather StatementHGX58 min
Jun 18, 4:19 PM CDTSpecial Weather StatementHGX41 min
Jul 16, 3:12 PM CDTSpecial Weather StatementHGX48 min
Aug 10, 2:30 PM CDTSevere Thunderstorm WarningHGX45 min
Aug 11, 4:10 PM CDTSpecial Weather StatementHGX50 min
Aug 14, 3:22 PM CDTSevere Thunderstorm WarningHGX38 min
Aug 16, 4:02 PM CDTSpecial Weather StatementHGX28 min
Sep 4, 5:48 PM CDTSpecial Weather StatementHGX27 min
Sep 4, 6:48 PM CDTAreal Flood AdvisoryHGX57 min
Sep 29, 9:33 AM CDTAreal Flood AdvisoryHGX3 hr
Oct 12, 11:38 AM CDTMesoscale DiscussionSPC2 hr
Oct 12, 4:25 PM CDTMesoscale DiscussionSPC95 min
Oct 12, 5:48 PM CDTAreal Flood AdvisoryHGX3 hr
Oct 12, 7:28 PM CDTAreal Flood AdvisoryHGX2 hr
Oct 30, 11:38 AM CDTSpecial Weather StatementHGX37 min
Oct 30, 12:17 PM CDTSevere Thunderstorm WarningHGX28 min
Oct 30, 2:39 PM CDTFlash Flood WatchHGX25 hr
Oct 31, 1:51 AM CDTMesoscale DiscussionSPC114 min
Oct 31, 2:41 AM CDTAreal Flood AdvisoryHGX2 hr
Oct 31, 4:55 AM CDTFlash Flood WarningHGX3 hr
Oct 31, 10:32 PM CDTDense Fog AdvisoryHGX10 hr
Nov 11, 3:21 PM CSTFreeze WatchHGX24 hr
Nov 12, 3:21 PM CSTFreeze WarningHGX17 hr
Nov 13, 3:44 PM CSTFreeze WarningHGX16 hr
Nov 16, 8:02 AM CSTDense Fog AdvisoryHGX118 min
Nov 17, 5:54 PM CSTDense Fog AdvisoryHGX18 hr
Dec 14, 2:42 AM CSTDense Fog AdvisoryHGX7 hr
Dec 21, 2:31 AM CSTMesoscale DiscussionSPC2 hr
Dec 21, 7:57 AM CSTMesoscale DiscussionSPC63 min
Dec 21, 9:46 AM CSTTornado WatchSPC8 hr
Dec 21, 10:35 AM CSTSpecial Weather StatementHGX25 min
Dec 21, 12:30 PM CSTMesoscale DiscussionSPC60 min
Dec 21, 12:49 PM CSTSpecial Weather StatementHGX41 min
Dec 21, 8:21 PM CSTDense Fog AdvisoryHGX8 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 archive20122014

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.