Alert archive / Texas / Houston County

Weather alerts in Houston County, Texas, 2009

148 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Houston County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts
148
Warnings
48
Watches
28
Advisories
26
Busiest month
April30 alerts
Busiest day
December 24, 200910 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 Houston County in 2009 had a tornado report inside them.

Houston County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings23770%1182%21 min
Flash flood warnings00

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Houston/Galveston, TX: tornado warnings46589%1656%7 min
NWS Houston/Galveston, TX: severe thunderstorm warnings2215774%12976%19 min
NWS Houston/Galveston, TX: flash flood warnings411661%5686%74 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 13, 9:35 AM CSTRed Flag WarningHGX8 hr
Jan 18, 3:42 PM CSTFire Weather WatchHGX6 hr
Jan 18, 9:20 PM CSTRed Flag WarningHGX21 hr
Jan 19, 7:04 AM CSTFire Weather WatchHGX22 hr
Jan 20, 5:27 AM CSTRed Flag WarningHGX13 hr
Jan 27, 5:00 AM CSTWinter Storm WatchHGX11 hr
Jan 27, 3:40 PM CSTFreezing Rain AdvisoryHGX15 hr
Feb 1, 3:12 PM CSTRed Flag WarningHGX24 hr
Feb 1, 10:29 PM CSTSevere Thunderstorm WarningHGX61 min
Feb 1, 10:30 PM CSTMesoscale DiscussionSPC90 min
Feb 1, 11:32 PM CSTSevere Thunderstorm WarningHGX43 min
Feb 10, 9:30 PM CSTTornado WatchSPC7 hr
Feb 11, 12:08 AM CSTSevere Thunderstorm WarningHGX37 min
Feb 17, 3:49 PM CSTFire Weather WatchHGX13 hr
Feb 27, 6:32 AM CSTFire Weather WatchHGX23 hr
Feb 27, 2:59 PM CSTRed Flag WarningHGX27 hr
Feb 27, 8:11 PM CSTWind AdvisoryHGX25 hr
Mar 14, 5:46 AM CDTRiver Flood WarningSHV26 days
Mar 16, 8:10 PM CDTDense Fog AdvisoryHGX14 hr
Mar 17, 8:04 PM CDTDense Fog AdvisoryHGX14 hr
Mar 18, 8:31 PM CDTDense Fog AdvisoryHGX14 hr
Mar 25, 12:51 PM CDTMesoscale DiscussionSPC114 min
Mar 25, 2:06 PM CDTTornado WatchSPC7 hr
Mar 25, 2:21 PM CDTRiver Flood WarningSHV4 days
Mar 25, 3:57 PM CDTMesoscale DiscussionSPC93 min
Mar 25, 5:29 PM CDTMesoscale DiscussionSPC91 min
Mar 25, 7:31 PM CDTMesoscale DiscussionSPC59 min
Mar 27, 10:24 AM CDTMesoscale DiscussionSPC96 min
Mar 27, 11:48 AM CDTSevere Thunderstorm WatchSPC5 hr
Mar 27, 1:41 PM CDTTornado WarningHGX34 min
Apr 1, 8:42 AM CDTRiver Flood WarningSHV8 days
Apr 1, 3:13 PM CDTFire Weather WatchHGX17 hr
Apr 2, 1:32 AM CDTMesoscale DiscussionSPC58 min
Apr 2, 1:49 AM CDTSevere Thunderstorm WatchSPC7 hr
Apr 2, 4:42 AM CDTMesoscale DiscussionSPC63 min
Apr 2, 7:47 AM CDTRed Flag WarningHGX11 hr
Apr 2, 11:19 AM CDTWind AdvisoryHGX8 hr
Apr 5, 5:55 AM CDTWind AdvisoryHGX13 hr
Apr 5, 7:16 PM CDTFire Weather WatchHGX17 hr
Apr 6, 3:23 PM CDTFreeze WarningHGX18 hr
Apr 12, 8:52 AM CDTSevere Thunderstorm WarningHGX38 min
Apr 16, 7:43 PM CDTMesoscale DiscussionSPC62 min
Apr 16, 7:54 PM CDTSevere Thunderstorm WarningHGX36 min
Apr 16, 8:30 PM CDTSevere Thunderstorm WarningHGX45 min
Apr 17, 9:56 AM CDTMesoscale DiscussionSPC94 min
Apr 17, 11:24 AM CDTFlood WatchHGX33 hr
Apr 17, 12:10 PM CDTMesoscale DiscussionSPC3 hr
Apr 18, 9:47 AM CDTMesoscale DiscussionSPC28 min
Apr 18, 9:53 AM CDTTornado WatchSPC6 hr
Apr 18, 11:16 AM CDTRiver Flood WarningSHV15 days
Apr 18, 11:16 AM CDTRiver Flood WarningSHV6 days
Apr 18, 11:16 AM CDTRiver Flood WarningSHV9 days
Apr 18, 11:26 AM CDTMesoscale DiscussionSPC2 hr
Apr 18, 11:56 PM CDTDense Fog AdvisoryHGX8 hr
Apr 24, 12:07 PM CDTMesoscale DiscussionSPC113 min
Apr 27, 6:08 AM CDTTornado WatchSPC7 hr
Apr 27, 8:59 AM CDTMesoscale DiscussionSPC91 min
Apr 27, 1:26 PM CDTSevere Thunderstorm WarningHGX44 min
Apr 27, 3:47 PM CDTFlood WatchHGX5 hr
Apr 28, 3:27 AM CDTFlood WatchHGX12 hr
May 2, 3:04 PM CDTMesoscale DiscussionSPC26 min
May 3, 5:12 AM CDTSevere Thunderstorm WatchSPC7 hr
May 3, 5:40 AM CDTSevere Thunderstorm WarningHGX50 min
May 3, 6:26 AM CDTSevere Thunderstorm WarningHGX64 min
May 4, 8:55 PM CDTRiver Flood WarningSHV12 hr
May 11, 1:05 PM CDTMesoscale DiscussionSPC85 min
Jun 11, 5:22 AM CDTMesoscale DiscussionSPC53 min
Jun 11, 5:42 AM CDTSevere Thunderstorm WatchSPC4 hr
Jun 11, 5:59 AM CDTSevere Thunderstorm WarningHGX46 min
Jun 11, 6:43 AM CDTSevere Thunderstorm WarningHGX47 min
Jun 11, 7:55 AM CDTMesoscale DiscussionSPC65 min
Jun 11, 10:10 AM CDTSevere Thunderstorm WatchSPC8 hr
Jun 11, 1:10 PM CDTMesoscale DiscussionSPC65 min
Jun 11, 5:41 PM CDTMesoscale DiscussionSPC64 min
Jun 24, 4:04 PM CDTHeat AdvisoryHGX5 days
Jul 4, 8:51 AM CDTHeat AdvisoryHGX34 hr
Jul 5, 4:34 PM CDTMesoscale DiscussionSPC26 min
Jul 5, 4:57 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 5, 5:19 PM CDTSpecial Weather StatementHGX56 min
Jul 5, 5:32 PM CDTSevere Thunderstorm WarningHGX32 min
Jul 8, 5:07 PM CDTMesoscale DiscussionSPC83 min
Jul 8, 9:08 PM CDTHeat AdvisoryHGX4 days
Jul 11, 8:47 PM CDTHeat AdvisoryHGX22 hr
Jul 19, 2:36 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 19, 5:54 PM CDTMesoscale DiscussionSPC96 min
Jul 30, 6:40 AM CDTMesoscale DiscussionSPC95 min
Jul 30, 7:03 AM CDTSpecial Weather StatementHGX117 min
Aug 4, 7:03 PM CDTHeat AdvisoryHGX3 days
Aug 6, 6:40 PM CDTSevere Thunderstorm WarningHGX50 min
Aug 17, 5:34 PM CDTSpecial Weather StatementHGX56 min
Aug 17, 6:30 PM CDTSpecial Weather StatementHGX60 min
Aug 23, 6:27 PM CDTSevere Thunderstorm WarningHGX33 min
Aug 23, 8:16 PM CDTSpecial Weather StatementHGX29 min
Aug 25, 6:41 PM CDTSevere Thunderstorm WarningHGX49 min
Aug 26, 10:07 AM CDTMesoscale DiscussionSPC83 min
Aug 26, 10:47 AM CDTSevere Thunderstorm WatchSPC7 hr
Aug 26, 2:48 PM CDTSevere Thunderstorm WarningHGX42 min
Aug 26, 7:50 PM CDTSevere Thunderstorm WarningHGX40 min
Aug 26, 7:51 PM CDTSevere Thunderstorm WarningHGX39 min
Sep 3, 2:39 PM CDTSevere Thunderstorm WarningHGX51 min
Sep 3, 2:58 PM CDTSpecial Weather StatementFWD32 min
Sep 3, 3:27 PM CDTSevere Thunderstorm WarningHGX48 min
Sep 3, 3:46 PM CDTMesoscale DiscussionSPC119 min
Sep 3, 4:17 PM CDTAreal Flood AdvisoryHGX118 min
Sep 27, 1:06 AM CDTDense Fog AdvisoryHGX8 hr
Oct 1, 9:44 PM CDTMesoscale DiscussionSPC91 min
Oct 1, 11:00 PM CDTSpecial Weather StatementHGX60 min
Oct 9, 6:59 AM CDTMesoscale DiscussionSPC3 hr
Oct 13, 8:32 PM CDTRiver Flood WarningSHV32 days
Oct 17, 8:22 PM CDTRiver Flood WarningSHV27 days
Oct 22, 9:29 AM CDTRiver Flood WarningSHV31 days
Oct 25, 3:43 PM CDTFlash Flood WatchHGX24 hr
Oct 28, 5:15 AM CDTFlash Flood WatchHGX47 hr
Oct 28, 8:41 PM CDTRiver Flood WarningHGX7 days
Oct 29, 10:48 AM CDTMesoscale DiscussionSPC117 min
Oct 29, 11:19 AM CDTWind AdvisoryHGX9 hr
Oct 29, 1:09 PM CDTSevere Thunderstorm WarningHGX51 min
Oct 29, 1:14 PM CDTTornado WatchSPC8 hr
Oct 29, 3:03 PM CDTMesoscale DiscussionSPC117 min
Oct 29, 5:24 PM CDTMesoscale DiscussionSPC66 min
Nov 22, 8:56 PM CSTDense Fog AdvisoryHGX13 hr
Dec 3, 4:55 AM CSTWinter Storm WatchHGX17 hr
Dec 3, 7:43 AM CSTFreeze WarningHGX49 hr
Dec 3, 10:17 PM CSTWinter Storm WarningHGX20 hr
Dec 3, 10:17 PM CSTWinter Weather AdvisoryHGX17 hr
Dec 7, 1:16 AM CSTDense Fog AdvisoryHGX7 hr
Dec 8, 5:07 AM CSTDense Fog AdvisoryHGX5 hr
Dec 12, 3:30 PM CSTDense Fog AdvisoryHGX18 hr
Dec 13, 3:01 PM CSTDense Fog AdvisoryHGX19 hr
Dec 14, 2:56 PM CSTDense Fog AdvisoryHGX18 hr
Dec 23, 2:37 AM CSTMesoscale DiscussionSPC2 hr
Dec 23, 1:03 PM CSTMesoscale DiscussionSPC57 min
Dec 23, 1:59 PM CSTTornado WatchSPC7 hr
Dec 23, 5:04 PM CSTSpecial Weather StatementHGX56 min
Dec 23, 5:13 PM CSTTornado WarningHGX47 min
Dec 23, 5:21 PM CSTMesoscale DiscussionSPC114 min
Dec 23, 6:01 PM CSTSevere Thunderstorm WarningHGX44 min
Dec 23, 7:50 PM CSTMesoscale DiscussionSPC85 min
Dec 23, 8:48 PM CSTTornado WatchSPC9 hr
Dec 23, 9:32 PM CSTWind AdvisoryHGX30 hr
Dec 23, 11:05 PM CSTAreal Flood AdvisoryHGX115 min
Dec 23, 11:06 PM CSTMesoscale DiscussionSPC114 min
Dec 23, 11:19 PM CSTSevere Thunderstorm WarningHGX21 min
Dec 24, 1:05 AM CSTRiver Flood WarningSHV12 days
Dec 24, 3:30 AM CSTMesoscale DiscussionSPC2 hr
Dec 24, 9:47 AM CSTRiver Flood WarningSHV25 hr
Dec 25, 5:01 PM CSTRiver Flood WarningSHV42 hr
Dec 30, 11:57 PM CSTDense Fog AdvisoryHGX12 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 archive20082010

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.