Alert archive / Texas / Galveston County

Weather alerts in Galveston County, Texas, 2018

220 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Galveston County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
220
Warnings
45
Watches
12
Advisories
92
Busiest month
September40 alerts
Busiest day
March 29, 201810 alerts

Over time

By month

Warning verification

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

0 of 2 tornado warnings covering Galveston County in 2018 had a tornado report inside them.

Galveston County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings16850%5100%18 min
Flash flood warnings15847%2383%65 min

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Houston/Galveston, TX: tornado warnings16194%714%3 min
NWS Houston/Galveston, TX: severe thunderstorm warnings993763%9762%17 min
NWS Houston/Galveston, TX: flash flood warnings391562%5163%58 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 1, 3:21 PM CSTHard Freeze WarningHGX42 hr
Jan 8, 12:30 AM CSTSpecial Weather StatementHGX30 min
Jan 11, 3:48 AM CSTWind AdvisoryHGX32 hr
Jan 15, 4:46 AM CSTWinter Weather AdvisoryHGX29 hr
Jan 15, 3:21 PM CSTWinter Storm WarningHGX29 hr
Jan 16, 2:54 PM CSTHard Freeze WarningHGX19 hr
Jan 16, 3:15 PM CSTWind Chill AdvisoryHGX19 hr
Jan 16, 3:15 PM CSTWinter Weather AdvisoryHGX19 hr
Jan 20, 5:02 AM CSTDense Fog AdvisoryHGX5 hr
Jan 27, 4:11 AM CSTAreal Flood AdvisoryHGX3 hr
Jan 27, 4:40 AM CSTFlash Flood WarningHGX3 hr
Jan 27, 6:23 AM CSTAreal Flood AdvisoryHGX112 min
Jan 28, 12:57 AM CSTDense Fog AdvisoryHGX3 hr
Feb 3, 9:00 PM CSTDense Fog AdvisoryHGX13 hr
Feb 5, 11:13 PM CSTDense Fog AdvisoryHGX12 hr
Feb 6, 2:19 PM CSTDense Fog AdvisoryHGX6 hr
Feb 9, 7:39 PM CSTDense Fog AdvisoryHGX11 hr
Feb 10, 8:14 AM CSTAreal Flood AdvisoryHGX2 hr
Feb 10, 8:33 AM CSTDense Fog AdvisoryHGX87 min
Feb 13, 5:52 PM CSTDense Fog AdvisoryHGX18 hr
Feb 14, 5:59 PM CSTDense Fog AdvisoryHGX18 hr
Feb 15, 6:57 PM CSTDense Fog AdvisoryHGX16 hr
Feb 18, 7:31 AM CSTDense Fog AdvisoryHGX2 hr
Feb 21, 4:18 AM CSTAreal Flood AdvisoryHGX57 min
Feb 23, 5:22 AM CSTDense Fog AdvisoryHGX7 hr
Mar 11, 3:11 PM CDTWind AdvisoryHGX16 hr
Mar 16, 3:16 PM CDTRip Current StatementHGX19 hr
Mar 24, 6:38 PM CDTRip Current StatementHGX46 hr
Mar 27, 4:19 AM CDTBeach Hazards StatementHGX60 hr
Mar 27, 2:01 PM CDTFlash Flood WatchHGX41 hr
Mar 28, 12:03 PM CDTTornado WatchSPC9 hr
Mar 28, 8:28 PM CDTMesoscale DiscussionSPC62 min
Mar 29, 2:08 AM CDTAreal Flood AdvisoryHGX3 hr
Mar 29, 2:28 AM CDTSevere Thunderstorm WarningHGX32 min
Mar 29, 2:51 AM CDTSevere Thunderstorm WarningHGX39 min
Mar 29, 2:53 AM CDTSevere Thunderstorm WarningHGX39 min
Mar 29, 2:56 AM CDTTornado WarningHGX19 min
Mar 29, 3:01 AM CDTAreal Flood AdvisoryHGX119 min
Mar 29, 3:12 AM CDTTornado WarningHGX18 min
Mar 29, 3:17 AM CDTMesoscale DiscussionSPC58 min
Mar 29, 3:31 AM CDTSevere Thunderstorm WarningHGX14 min
Apr 1, 2:56 PM CDTBeach Hazards StatementHGX55 hr
Apr 3, 11:33 PM CDTMesoscale DiscussionSPC57 min
Apr 3, 11:53 PM CDTSevere Thunderstorm WarningHGX37 min
Apr 7, 3:49 AM CDTWind AdvisoryHGX15 hr
Apr 7, 4:17 PM CDTRip Current StatementHGX12 hr
Apr 14, 4:37 AM CDTWind AdvisoryHGX13 hr
Apr 18, 9:25 AM CDTRip Current StatementHGX14 hr
Apr 21, 11:17 PM CDTSpecial Weather StatementHGX58 min
May 3, 4:19 AM CDTRip Current StatementHGX16 hr
May 4, 9:29 AM CDTRip Current StatementHGX15 hr
May 26, 7:57 PM CDTSevere Thunderstorm WarningHGX33 min
May 26, 9:08 PM CDTSevere Thunderstorm WarningHGX37 min
May 27, 3:29 PM CDTSpecial Weather StatementHGX46 min
May 31, 9:10 AM CDTRip Current StatementHGX12 hr
Jun 1, 9:07 AM CDTRip Current StatementHGX13 hr
Jun 2, 10:23 AM CDTRip Current StatementHGX12 hr
Jun 3, 3:49 PM CDTMesoscale DiscussionSPC56 min
Jun 9, 11:39 AM CDTSpecial Weather StatementHGX36 min
Jun 9, 12:10 PM CDTSpecial Weather StatementHGX35 min
Jun 9, 2:46 PM CDTSpecial Weather StatementHGX29 min
Jun 9, 2:56 PM CDTSevere Thunderstorm WarningHGX34 min
Jun 10, 8:31 AM CDTRip Current StatementHGX15 hr
Jun 11, 8:54 AM CDTRip Current StatementHGX15 hr
Jun 12, 10:33 AM CDTRip Current StatementHGX9 hr
Jun 13, 9:03 AM CDTRip Current StatementHGX11 hr
Jun 14, 1:38 PM CDTSevere Thunderstorm WarningHGX37 min
Jun 15, 9:04 AM CDTRip Current StatementHGX11 hr
Jun 16, 10:19 AM CDTRip Current StatementHGX11 hr
Jun 17, 4:14 AM CDTRip Current StatementHGX18 hr
Jun 17, 8:47 AM CDTCoastal Flood AdvisoryHGX54 hr
Jun 18, 3:18 AM CDTRip Current StatementHGX19 hr
Jun 19, 2:19 AM CDTWind AdvisoryHGX8 hr
Jun 19, 3:51 AM CDTFlash Flood WatchHGX15 hr
Jun 19, 4:08 AM CDTRip Current StatementHGX11 hr
Jun 19, 3:35 PM CDTBeach Hazards StatementHGX30 hr
Jun 20, 5:07 PM CDTAreal Flood AdvisoryHGX113 min
Jun 22, 9:21 AM CDTRip Current StatementHGX12 hr
Jun 23, 7:00 AM CDTRip Current StatementHGX13 hr
Jun 24, 6:35 AM CDTRip Current StatementHGX13 hr
Jun 25, 6:38 AM CDTRip Current StatementHGX13 hr
Jun 26, 9:47 AM CDTRip Current StatementHGX12 hr
Jun 28, 10:28 AM CDTRip Current StatementHGX14 hr
Jun 29, 9:55 AM CDTRip Current StatementHGX10 hr
Jun 29, 11:02 AM CDTHeat AdvisoryHGX8 hr
Jun 30, 10:14 AM CDTRip Current StatementHGX10 hr
Jul 1, 10:04 AM CDTRip Current StatementHGX11 hr
Jul 2, 10:18 AM CDTRip Current StatementHGX11 hr
Jul 3, 8:38 PM CDTAreal Flood AdvisoryHGX3 hr
Jul 3, 9:01 PM CDTSevere Thunderstorm WarningHGX44 min
Jul 4, 6:27 AM CDTAreal Flood AdvisoryHGX2 hr
Jul 4, 8:41 AM CDTAreal Flood AdvisoryHGX3 hr
Jul 4, 10:26 AM CDTFlash Flood WatchHGX10 hr
Jul 5, 1:04 PM CDTAreal Flood AdvisoryHGX70 min
Jul 5, 7:02 PM CDTSevere Thunderstorm WarningHGX43 min
Jul 8, 11:21 AM CDTAreal Flood AdvisoryHGX114 min
Jul 8, 11:34 AM CDTAreal Flood AdvisoryHGX116 min
Jul 20, 4:27 AM CDTHeat AdvisoryHGX16 hr
Jul 20, 10:16 AM CDTRip Current StatementHGX10 hr
Jul 20, 3:09 PM CDTHeat AdvisoryHGX29 hr
Jul 21, 2:23 PM CDTHeat AdvisoryHGX30 hr
Jul 22, 3:59 AM CDTHeat AdvisoryHGX41 hr
Jul 31, 12:21 PM CDTSevere Thunderstorm WarningHGX24 min
Jul 31, 1:28 PM CDTFlash Flood WarningHGX52 min
Aug 5, 8:21 AM CDTRip Current StatementHGX10 hr
Aug 6, 8:33 AM CDTRip Current StatementHGX10 hr
Aug 10, 10:24 AM CDTRip Current StatementHGX10 hr
Aug 11, 8:34 AM CDTRip Current StatementHGX11 hr
Aug 12, 9:16 AM CDTRip Current StatementHGX11 hr
Aug 14, 9:09 AM CDTRip Current StatementHGX11 hr
Aug 16, 12:47 PM CDTHeat AdvisoryHGX6 hr
Aug 20, 2:19 PM CDTHeat AdvisoryHGX5 hr
Aug 21, 9:05 AM CDTRip Current StatementHGX12 hr
Aug 21, 2:07 PM CDTHeat AdvisoryHGX5 hr
Aug 23, 5:53 AM CDTHeat AdvisoryHGX15 hr
Aug 29, 12:25 PM CDTAreal Flood AdvisoryHGX65 min
Sep 2, 11:56 AM CDTAreal Flood AdvisoryHGX2 hr
Sep 2, 12:31 PM CDTAreal Flood AdvisoryHGX119 min
Sep 2, 3:26 PM CDTFlash Flood WatchHGX45 hr
Sep 3, 4:25 AM CDTAreal Flood AdvisoryHGX2 hr
Sep 3, 4:55 AM CDTFlash Flood WarningHGX3 hr
Sep 3, 6:34 AM CDTAreal Flood AdvisoryHGX116 min
Sep 3, 6:52 AM CDTAreal Flood AdvisoryHGX113 min
Sep 3, 7:24 AM CDTAreal Flood AdvisoryHGX2 hr
Sep 3, 7:28 AM CDTAreal Flood AdvisoryHGX2 hr
Sep 3, 7:43 AM CDTFlash Flood WarningHGX8 hr
Sep 3, 9:13 AM CDTAreal Flood AdvisoryHGX6 hr
Sep 3, 3:19 PM CDTAreal Flood WarningHGX3 hr
Sep 10, 3:50 AM CDTFlash Flood WatchHGX33 hr
Sep 10, 10:26 AM CDTAreal Flood AdvisoryHGX2 hr
Sep 10, 11:16 AM CDTAreal Flood AdvisoryHGX119 min
Sep 11, 1:12 AM CDTAreal Flood AdvisoryHGX2 hr
Sep 11, 1:42 AM CDTFlash Flood WarningHGX93 min
Sep 11, 3:17 AM CDTAreal Flood AdvisoryHGX3 hr
Sep 11, 5:08 AM CDTFlash Flood WarningHGX112 min
Sep 11, 6:13 AM CDTAreal Flood AdvisoryHGX4 hr
Sep 11, 8:43 AM CDTAreal Flood WarningHGX2 hr
Sep 12, 6:03 AM CDTAreal Flood AdvisoryHGX117 min
Sep 12, 6:27 AM CDTFlash Flood WarningHGX2 hr
Sep 12, 8:29 AM CDTFlash Flood WarningHGX3 hr
Sep 12, 3:06 PM CDTFlash Flood WatchHGX61 hr
Sep 13, 10:33 AM CDTBeach Hazards StatementHGX20 hr
Sep 14, 8:15 AM CDTAreal Flood AdvisoryHGX2 hr
Sep 14, 8:26 AM CDTBeach Hazards StatementHGX14 hr
Sep 14, 8:38 AM CDTFlash Flood WarningHGX112 min
Sep 14, 10:23 AM CDTAreal Flood AdvisoryHGX67 min
Sep 14, 10:27 AM CDTAreal Flood WarningHGX4 hr
Sep 14, 11:34 AM CDTAreal Flood WarningHGX86 min
Sep 15, 3:14 PM CDTRip Current StatementHGX7 hr
Sep 21, 1:46 PM CDTSpecial Weather StatementHGX44 min
Sep 25, 3:12 PM CDTSpecial Weather StatementHGX33 min
Sep 29, 9:03 AM CDTAreal Flood AdvisoryHGX3 hr
Sep 29, 9:31 AM CDTRip Current StatementHGX11 hr
Sep 29, 10:42 AM CDTFlash Flood WarningHGX4 hr
Sep 29, 2:40 PM CDTAreal Flood AdvisoryHGX65 min
Sep 30, 11:10 AM CDTRip Current StatementHGX10 hr
Oct 8, 3:43 AM CDTCoastal Flood WatchHGX18 hr
Oct 8, 3:43 AM CDTCoastal Flood AdvisoryHGX63 hr
Oct 9, 4:47 AM CDTBeach Hazards StatementHGX38 hr
Oct 9, 4:19 PM CDTCoastal Flood WarningHGX27 hr
Oct 10, 7:09 PM CDTCoastal Flood AdvisoryHGX12 hr
Oct 11, 1:58 PM CDTCoastal Flood AdvisoryHGX15 hr
Oct 12, 5:25 AM CDTCoastal Flood StatementHGX65 hr
Oct 12, 10:08 AM CDTBeach Hazards StatementHGX60 hr
Oct 13, 4:31 AM CDTCoastal Flood WatchHGX10 hr
Oct 13, 2:19 PM CDTCoastal Flood AdvisoryHGX32 hr
Oct 17, 3:47 PM CDTCoastal Flood StatementHGX21 hr
Oct 18, 3:12 PM CDTCoastal Flood AdvisoryHGX19 hr
Oct 20, 9:17 PM CDTWind AdvisoryHGX16 hr
Oct 23, 3:18 PM CDTBeach Hazards StatementHGX14 hr
Oct 24, 5:32 AM CDTCoastal Flood AdvisoryHGX17 hr
Oct 24, 4:43 PM CDTRip Current StatementHGX11 hr
Oct 24, 6:04 PM CDTFlash Flood WarningHGX116 min
Oct 24, 6:39 PM CDTMesoscale DiscussionSPC2 hr
Oct 24, 7:26 PM CDTAreal Flood AdvisoryHGX64 min
Oct 24, 7:45 PM CDTFlash Flood WarningHGX90 min
Oct 24, 8:24 PM CDTSpecial Weather StatementHGX51 min
Oct 24, 8:33 PM CDTAreal Flood AdvisoryHGX117 min
Oct 24, 9:11 PM CDTAreal Flood WarningHGX64 min
Oct 24, 9:15 PM CDTSpecial Weather StatementHGX30 min
Oct 24, 9:30 PM CDTFlash Flood WarningHGX2 hr
Oct 24, 10:37 PM CDTAreal Flood AdvisoryHGX3 hr
Oct 24, 11:15 PM CDTAreal Flood AdvisoryHGX2 hr
Oct 25, 4:40 AM CDTBeach Hazards StatementHGX2 hr
Oct 29, 1:08 AM CDTDense Fog AdvisoryHGX9 hr
Oct 31, 2:14 PM CDTMesoscale DiscussionSPC3 hr
Oct 31, 3:02 PM CDTTornado WatchSPC9 hr
Oct 31, 9:29 PM CDTSevere Thunderstorm WarningHGX31 min
Oct 31, 10:16 PM CDTSevere Thunderstorm WarningHGX29 min
Oct 31, 10:44 PM CDTSevere Thunderstorm WarningHGX31 min
Nov 4, 10:52 AM CSTRip Current StatementHGX10 hr
Nov 6, 2:16 AM CSTDense Fog AdvisoryHGX8 hr
Nov 9, 3:53 AM CSTWind AdvisoryHGX28 hr
Nov 12, 5:05 AM CSTWind AdvisoryHGX25 hr
Nov 13, 11:32 AM CSTFreeze WarningHGX21 hr
Nov 24, 5:11 AM CSTDense Fog AdvisoryHGX5 hr
Nov 25, 7:03 AM CSTDense Fog AdvisoryHGX4 hr
Dec 1, 1:59 AM CSTDense Fog AdvisoryHGX6 hr
Dec 6, 5:50 AM CSTFlash Flood WatchHGX46 hr
Dec 7, 9:50 PM CSTAreal Flood AdvisoryHGX3 hr
Dec 7, 10:05 PM CSTSevere Thunderstorm WarningHGX25 min
Dec 7, 10:09 PM CSTMesoscale DiscussionSPC96 min
Dec 7, 10:46 PM CSTAreal Flood AdvisoryHGX119 min
Dec 7, 11:10 PM CSTFlash Flood WarningHGX95 min
Dec 8, 12:35 AM CSTAreal Flood AdvisoryHGX115 min
Dec 8, 12:53 AM CSTFlash Flood WarningHGX82 min
Dec 8, 1:35 AM CSTRiver Flood WarningHGX24 hr
Dec 8, 4:00 AM CSTRiver Flood WarningHGX95 min
Dec 12, 3:56 PM CSTWind AdvisoryHGX36 hr
Dec 14, 4:08 AM CSTWind AdvisoryHGX13 hr
Dec 17, 10:55 PM CSTDense Fog AdvisoryHGX12 hr
Dec 20, 3:51 AM CSTWind AdvisoryHGX18 hr
Dec 23, 1:24 AM CSTDense Fog AdvisoryHGX8 hr
Dec 24, 10:47 PM CSTDense Fog AdvisoryHGX10 hr
Dec 26, 12:16 PM CSTCoastal Flood AdvisoryHGX20 hr
Dec 27, 3:09 AM CSTMesoscale DiscussionSPC2 hr
Dec 27, 3:43 AM CSTTornado WatchSPC10 hr
Dec 27, 5:44 AM CSTSpecial Weather StatementHGX31 min
Dec 27, 9:02 AM CSTAreal Flood AdvisoryHGX118 min
Dec 30, 11:29 PM CSTDense Fog AdvisoryHGX7 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 archive20172019

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.