Alert archive / Texas / Liberty County

Weather alerts in Liberty County, Texas, 2020

141 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Liberty County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
141
Warnings
33
Watches
17
Advisories
51
Busiest month
April36 alerts
Busiest day
April 19, 202010 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 Liberty County in 2020 had a tornado report inside them.

Liberty County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings211433%944%24 min
Flash flood warnings10100%0

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Houston/Galveston, TX: tornado warnings25580%1486%15 min
NWS Houston/Galveston, TX: severe thunderstorm warnings1165354%22279%22 min
NWS Houston/Galveston, TX: flash flood warnings331555%4691%54 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 2, 4:33 AM CSTDense Fog AdvisoryHGX7 hr
Jan 2, 10:53 PM CSTDense Fog AdvisoryHGX9 hr
Jan 5, 5:13 AM CSTDense Fog AdvisoryHGX4 hr
Jan 10, 8:49 PM CSTMesoscale DiscussionSPC116 min
Jan 10, 9:09 PM CSTTornado WatchSPC5 hr
Jan 10, 11:22 PM CSTSevere Thunderstorm WarningHGX38 min
Jan 10, 11:52 PM CSTSevere Thunderstorm WarningHGX38 min
Jan 11, 12:21 AM CSTMesoscale DiscussionSPC99 min
Jan 11, 12:23 AM CSTSevere Thunderstorm WarningHGX52 min
Jan 11, 1:11 AM CSTSevere Thunderstorm WarningHGX49 min
Jan 13, 6:35 PM CSTDense Fog AdvisoryHGX15 hr
Jan 14, 6:43 PM CSTDense Fog AdvisoryHGX13 hr
Jan 15, 5:36 PM CSTDense Fog AdvisoryHGX16 hr
Jan 26, 8:23 PM CSTDense Fog AdvisoryHGX15 hr
Feb 10, 12:39 PM CSTMesoscale DiscussionSPC2 hr
Feb 16, 12:36 AM CSTDense Fog AdvisoryHGX9 hr
Feb 16, 5:09 PM CSTDense Fog AdvisoryHGX19 hr
Mar 3, 1:17 AM CSTDense Fog AdvisoryHGX9 hr
Mar 11, 2:33 AM CDTDense Fog AdvisoryHGX7 hr
Mar 21, 9:03 PM CDTSpecial Weather StatementHGX42 min
Mar 30, 9:32 AM CDTRiver Flood WarningHGX21 days
Mar 30, 9:32 AM CDTRiver Flood WarningHGX21 days
Apr 7, 1:56 AM CDTDense Fog AdvisoryHGX6 hr
Apr 8, 2:38 PM CDTMesoscale DiscussionSPC67 min
Apr 9, 2:47 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 9, 5:20 PM CDTMesoscale DiscussionSPC115 min
Apr 9, 5:47 PM CDTSevere Thunderstorm WarningHGX43 min
Apr 9, 6:23 PM CDTSevere Thunderstorm WarningHGX37 min
Apr 17, 9:13 PM CDTMesoscale DiscussionSPC2 hr
Apr 18, 3:33 PM CDTMesoscale DiscussionSPC87 min
Apr 18, 5:18 PM CDTSevere Thunderstorm WarningHGX30 min
Apr 18, 5:27 PM CDTSevere Thunderstorm WarningHGX33 min
Apr 18, 5:50 PM CDTSevere Thunderstorm WarningHGX40 min
Apr 18, 5:59 PM CDTSevere Thunderstorm WarningHGX46 min
Apr 18, 6:31 PM CDTSpecial Weather StatementHGX44 min
Apr 19, 7:22 AM CDTMesoscale DiscussionSPC113 min
Apr 19, 8:41 AM CDTTornado WatchSPC6 hr
Apr 19, 9:44 AM CDTSevere Thunderstorm WarningHGX46 min
Apr 19, 10:27 AM CDTSpecial Weather StatementHGX48 min
Apr 19, 10:49 AM CDTSevere Thunderstorm WarningHGX41 min
Apr 19, 11:29 AM CDTSpecial Weather StatementHGX61 min
Apr 19, 12:39 PM CDTMesoscale DiscussionSPC66 min
Apr 19, 2:39 PM CDTTornado WatchSPC9 hr
Apr 19, 4:07 PM CDTSpecial Weather StatementHGX38 min
Apr 19, 4:16 PM CDTTornado WarningHGX22 min
Apr 19, 11:05 PM CDTDense Fog AdvisoryHGX9 hr
Apr 22, 1:10 PM CDTMesoscale DiscussionSPC65 min
Apr 22, 4:24 PM CDTMesoscale DiscussionSPC96 min
Apr 25, 2:01 PM CDTSpecial Weather StatementHGX29 min
Apr 28, 12:47 PM CDTMesoscale DiscussionSPC118 min
Apr 28, 2:19 PM CDTAreal Flood AdvisoryHGX56 min
Apr 28, 5:22 PM CDTWind AdvisoryHGX3 hr
Apr 29, 2:40 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 29, 3:35 AM CDTSevere Thunderstorm WarningHGX40 min
Apr 29, 4:11 AM CDTSevere Thunderstorm WarningHGX64 min
Apr 29, 4:59 AM CDTSevere Thunderstorm WarningHGX61 min
Apr 29, 5:05 AM CDTMesoscale DiscussionSPC115 min
Apr 29, 8:46 AM CDTRiver Flood WarningHGX49 hr
May 5, 3:44 PM CDTMesoscale DiscussionSPC2 hr
May 15, 5:14 AM CDTFlash Flood WatchHGX26 hr
May 16, 12:54 AM CDTSevere Thunderstorm WatchSPC4 hr
May 24, 12:39 PM CDTMesoscale DiscussionSPC96 min
May 24, 6:03 PM CDTAreal Flood AdvisoryHGX117 min
May 24, 6:24 PM CDTAreal Flood AdvisoryHGX111 min
May 24, 7:12 PM CDTAreal Flood AdvisoryHGX2 hr
May 26, 7:17 PM CDTSevere Thunderstorm WarningHGX43 min
May 26, 7:24 PM CDTAreal Flood AdvisoryHGX66 min
May 27, 1:24 PM CDTSevere Thunderstorm WatchSPC9 hr
May 27, 3:52 PM CDTSpecial Weather StatementHGX38 min
May 27, 4:06 PM CDTSevere Thunderstorm WarningHGX24 min
May 27, 4:28 PM CDTSevere Thunderstorm WarningHGX62 min
May 27, 5:06 PM CDTSevere Thunderstorm WarningHGX54 min
May 27, 5:28 PM CDTAreal Flood AdvisoryHGX115 min
May 28, 11:33 AM CDTSpecial Weather StatementHGX42 min
May 28, 11:47 AM CDTSevere Thunderstorm WarningHGX43 min
May 28, 12:04 PM CDTTornado WarningHGX26 min
Jun 8, 3:08 PM CDTHeat AdvisoryHGX28 hr
Jun 22, 10:31 AM CDTSpecial Weather StatementHGX44 min
Jun 23, 12:16 PM CDTFlash Flood WatchHGX19 hr
Jun 25, 6:24 AM CDTAreal Flood AdvisoryHGX111 min
Jun 25, 9:42 AM CDTAreal Flood AdvisoryHGX108 min
Jul 10, 3:12 AM CDTHeat AdvisoryHGX16 hr
Jul 10, 3:55 PM CDTHeat AdvisoryHGX28 hr
Jul 11, 2:44 PM CDTHeat AdvisoryHGX29 hr
Jul 12, 3:16 PM CDTHeat AdvisoryHGX29 hr
Jul 13, 3:13 PM CDTHeat AdvisoryHGX29 hr
Jul 22, 9:57 PM CDTTropical Storm WatchHGX36 hr
Jul 25, 6:59 AM CDTMesoscale DiscussionSPC2 hr
Jul 29, 12:46 PM CDTSpecial Weather StatementHGX59 min
Aug 4, 5:32 PM CDTAreal Flood AdvisoryHGX77 min
Aug 5, 3:12 PM CDTMesoscale DiscussionSPC93 min
Aug 12, 3:05 AM CDTHeat AdvisoryHGX5 days
Aug 17, 2:19 AM CDTSpecial Weather StatementHGX41 min
Aug 24, 3:52 PM CDTHurricane WatchHGX18 hr
Aug 24, 3:55 PM CDTTropical Storm WatchHGX18 hr
Aug 25, 10:04 AM CDTHurricane WarningHGX39 hr
Aug 25, 10:04 AM CDTTropical Storm WarningHGX48 hr
Aug 25, 10:07 AM CDTStorm Surge WarningHGX42 hr
Aug 28, 3:59 AM CDTHeat AdvisoryHGX18 hr
Aug 28, 3:00 PM CDTSpecial Weather StatementHGX45 min
Aug 28, 3:07 PM CDTHeat AdvisoryHGX30 hr
Aug 28, 3:25 PM CDTAreal Flood AdvisoryHGX2 hr
Aug 28, 4:47 PM CDTSpecial Weather StatementHGX43 min
Aug 28, 5:08 PM CDTSevere Thunderstorm WarningHGX37 min
Aug 30, 4:13 AM CDTHeat AdvisoryHGX40 hr
Aug 31, 3:47 PM CDTHeat AdvisoryHGX28 hr
Sep 2, 4:04 AM CDTHeat AdvisoryHGX15 hr
Sep 3, 4:00 AM CDTHeat AdvisoryHGX14 hr
Sep 10, 3:33 PM CDTAreal Flood AdvisoryHGX57 min
Sep 10, 4:43 PM CDTAreal Flood AdvisoryHGX62 min
Sep 18, 10:20 PM CDTHurricane WatchHGX30 hr
Sep 19, 10:12 AM CDTTropical Storm WarningHGX3 days
Sep 19, 4:28 PM CDTFlash Flood WatchHGX3 days
Sep 22, 8:57 PM CDTFlash Flood WarningHGX2 hr
Sep 23, 12:19 AM CDTAreal Flood AdvisoryHGX116 min
Sep 28, 4:06 AM CDTWind AdvisoryHGX17 hr
Oct 7, 9:54 AM CDTTropical Storm WatchHGX12 hr
Oct 7, 9:57 PM CDTTropical Storm WarningHGX48 hr
Oct 11, 1:51 AM CDTDense Fog AdvisoryHGX7 hr
Oct 21, 4:30 AM CDTDense Fog AdvisoryHGX5 hr
Oct 23, 1:51 PM CDTSpecial Weather StatementHGX54 min
Nov 8, 12:47 AM CSTDense Fog AdvisoryHGX8 hr
Nov 20, 3:03 AM CSTDense Fog AdvisoryHGX6 hr
Nov 29, 2:59 PM CSTFreeze WatchHGX12 hr
Nov 30, 3:12 AM CSTFreeze WarningHGX29 hr
Dec 11, 7:46 PM CSTDense Fog AdvisoryHGX7 hr
Dec 12, 4:02 AM CSTDense Fog AdvisoryHGX5 hr
Dec 13, 1:46 PM CSTMesoscale DiscussionSPC119 min
Dec 13, 3:19 PM CSTSpecial Weather StatementHGX86 min
Dec 19, 12:43 PM CSTAreal Flood AdvisoryHGX2 hr
Dec 19, 12:59 PM CSTMesoscale DiscussionSPC91 min
Dec 21, 12:22 AM CSTDense Fog AdvisoryHGX10 hr
Dec 23, 3:00 AM CSTWind AdvisoryHGX33 hr
Dec 23, 3:27 PM CSTMesoscale DiscussionSPC2 hr
Dec 23, 3:35 PM CSTSpecial Weather StatementHGX40 min
Dec 30, 4:48 PM CSTMesoscale DiscussionSPC2 hr
Dec 31, 7:10 AM CSTMesoscale DiscussionSPC95 min
Dec 31, 7:40 AM CSTTornado WatchSPC7 hr
Dec 31, 11:21 AM CSTMesoscale DiscussionSPC114 min
Dec 31, 11:58 AM CSTSpecial Weather StatementHGX62 min
Dec 31, 1:26 PM CSTAreal Flood AdvisoryHGX2 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 archive20192021

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.