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
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 21 | 14 | 33% | 9 | 44% | 24 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Houston/Galveston, TX: tornado warnings | 25 | 5 | 80% | 14 | 86% | 15 min |
| NWS Houston/Galveston, TX: severe thunderstorm warnings | 116 | 53 | 54% | 222 | 79% | 22 min |
| NWS Houston/Galveston, TX: flash flood warnings | 33 | 15 | 55% | 46 | 91% | 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 2, 4:33 AM CST | Dense Fog Advisory | HGX | 7 hr |
| Jan 2, 10:53 PM CST | Dense Fog Advisory | HGX | 9 hr |
| Jan 5, 5:13 AM CST | Dense Fog Advisory | HGX | 4 hr |
| Jan 10, 8:49 PM CST | Mesoscale Discussion | SPC | 116 min |
| Jan 10, 9:09 PM CST | Tornado Watch | SPC | 5 hr |
| Jan 10, 11:22 PM CST | Severe Thunderstorm Warning | HGX | 38 min |
| Jan 10, 11:52 PM CST | Severe Thunderstorm Warning | HGX | 38 min |
| Jan 11, 12:21 AM CST | Mesoscale Discussion | SPC | 99 min |
| Jan 11, 12:23 AM CST | Severe Thunderstorm Warning | HGX | 52 min |
| Jan 11, 1:11 AM CST | Severe Thunderstorm Warning | HGX | 49 min |
| Jan 13, 6:35 PM CST | Dense Fog Advisory | HGX | 15 hr |
| Jan 14, 6:43 PM CST | Dense Fog Advisory | HGX | 13 hr |
| Jan 15, 5:36 PM CST | Dense Fog Advisory | HGX | 16 hr |
| Jan 26, 8:23 PM CST | Dense Fog Advisory | HGX | 15 hr |
| Feb 10, 12:39 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 16, 12:36 AM CST | Dense Fog Advisory | HGX | 9 hr |
| Feb 16, 5:09 PM CST | Dense Fog Advisory | HGX | 19 hr |
| Mar 3, 1:17 AM CST | Dense Fog Advisory | HGX | 9 hr |
| Mar 11, 2:33 AM CDT | Dense Fog Advisory | HGX | 7 hr |
| Mar 21, 9:03 PM CDT | Special Weather Statement | HGX | 42 min |
| Mar 30, 9:32 AM CDT | River Flood Warning | HGX | 21 days |
| Mar 30, 9:32 AM CDT | River Flood Warning | HGX | 21 days |
| Apr 7, 1:56 AM CDT | Dense Fog Advisory | HGX | 6 hr |
| Apr 8, 2:38 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 9, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 9, 5:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 9, 5:47 PM CDT | Severe Thunderstorm Warning | HGX | 43 min |
| Apr 9, 6:23 PM CDT | Severe Thunderstorm Warning | HGX | 37 min |
| Apr 17, 9:13 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 18, 3:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 18, 5:18 PM CDT | Severe Thunderstorm Warning | HGX | 30 min |
| Apr 18, 5:27 PM CDT | Severe Thunderstorm Warning | HGX | 33 min |
| Apr 18, 5:50 PM CDT | Severe Thunderstorm Warning | HGX | 40 min |
| Apr 18, 5:59 PM CDT | Severe Thunderstorm Warning | HGX | 46 min |
| Apr 18, 6:31 PM CDT | Special Weather Statement | HGX | 44 min |
| Apr 19, 7:22 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Apr 19, 8:41 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 19, 9:44 AM CDT | Severe Thunderstorm Warning | HGX | 46 min |
| Apr 19, 10:27 AM CDT | Special Weather Statement | HGX | 48 min |
| Apr 19, 10:49 AM CDT | Severe Thunderstorm Warning | HGX | 41 min |
| Apr 19, 11:29 AM CDT | Special Weather Statement | HGX | 61 min |
| Apr 19, 12:39 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 19, 2:39 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 19, 4:07 PM CDT | Special Weather Statement | HGX | 38 min |
| Apr 19, 4:16 PM CDT | Tornado Warning | HGX | 22 min |
| Apr 19, 11:05 PM CDT | Dense Fog Advisory | HGX | 9 hr |
| Apr 22, 1:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Apr 22, 4:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Apr 25, 2:01 PM CDT | Special Weather Statement | HGX | 29 min |
| Apr 28, 12:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Apr 28, 2:19 PM CDT | Areal Flood Advisory | HGX | 56 min |
| Apr 28, 5:22 PM CDT | Wind Advisory | HGX | 3 hr |
| Apr 29, 2:40 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 29, 3:35 AM CDT | Severe Thunderstorm Warning | HGX | 40 min |
| Apr 29, 4:11 AM CDT | Severe Thunderstorm Warning | HGX | 64 min |
| Apr 29, 4:59 AM CDT | Severe Thunderstorm Warning | HGX | 61 min |
| Apr 29, 5:05 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 29, 8:46 AM CDT | River Flood Warning | HGX | 49 hr |
| May 5, 3:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 5:14 AM CDT | Flash Flood Watch | HGX | 26 hr |
| May 16, 12:54 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 24, 12:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 24, 6:03 PM CDT | Areal Flood Advisory | HGX | 117 min |
| May 24, 6:24 PM CDT | Areal Flood Advisory | HGX | 111 min |
| May 24, 7:12 PM CDT | Areal Flood Advisory | HGX | 2 hr |
| May 26, 7:17 PM CDT | Severe Thunderstorm Warning | HGX | 43 min |
| May 26, 7:24 PM CDT | Areal Flood Advisory | HGX | 66 min |
| May 27, 1:24 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 27, 3:52 PM CDT | Special Weather Statement | HGX | 38 min |
| May 27, 4:06 PM CDT | Severe Thunderstorm Warning | HGX | 24 min |
| May 27, 4:28 PM CDT | Severe Thunderstorm Warning | HGX | 62 min |
| May 27, 5:06 PM CDT | Severe Thunderstorm Warning | HGX | 54 min |
| May 27, 5:28 PM CDT | Areal Flood Advisory | HGX | 115 min |
| May 28, 11:33 AM CDT | Special Weather Statement | HGX | 42 min |
| May 28, 11:47 AM CDT | Severe Thunderstorm Warning | HGX | 43 min |
| May 28, 12:04 PM CDT | Tornado Warning | HGX | 26 min |
| Jun 8, 3:08 PM CDT | Heat Advisory | HGX | 28 hr |
| Jun 22, 10:31 AM CDT | Special Weather Statement | HGX | 44 min |
| Jun 23, 12:16 PM CDT | Flash Flood Watch | HGX | 19 hr |
| Jun 25, 6:24 AM CDT | Areal Flood Advisory | HGX | 111 min |
| Jun 25, 9:42 AM CDT | Areal Flood Advisory | HGX | 108 min |
| Jul 10, 3:12 AM CDT | Heat Advisory | HGX | 16 hr |
| Jul 10, 3:55 PM CDT | Heat Advisory | HGX | 28 hr |
| Jul 11, 2:44 PM CDT | Heat Advisory | HGX | 29 hr |
| Jul 12, 3:16 PM CDT | Heat Advisory | HGX | 29 hr |
| Jul 13, 3:13 PM CDT | Heat Advisory | HGX | 29 hr |
| Jul 22, 9:57 PM CDT | Tropical Storm Watch | HGX | 36 hr |
| Jul 25, 6:59 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 12:46 PM CDT | Special Weather Statement | HGX | 59 min |
| Aug 4, 5:32 PM CDT | Areal Flood Advisory | HGX | 77 min |
| Aug 5, 3:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 12, 3:05 AM CDT | Heat Advisory | HGX | 5 days |
| Aug 17, 2:19 AM CDT | Special Weather Statement | HGX | 41 min |
| Aug 24, 3:52 PM CDT | Hurricane Watch | HGX | 18 hr |
| Aug 24, 3:55 PM CDT | Tropical Storm Watch | HGX | 18 hr |
| Aug 25, 10:04 AM CDT | Hurricane Warning | HGX | 39 hr |
| Aug 25, 10:04 AM CDT | Tropical Storm Warning | HGX | 48 hr |
| Aug 25, 10:07 AM CDT | Storm Surge Warning | HGX | 42 hr |
| Aug 28, 3:59 AM CDT | Heat Advisory | HGX | 18 hr |
| Aug 28, 3:00 PM CDT | Special Weather Statement | HGX | 45 min |
| Aug 28, 3:07 PM CDT | Heat Advisory | HGX | 30 hr |
| Aug 28, 3:25 PM CDT | Areal Flood Advisory | HGX | 2 hr |
| Aug 28, 4:47 PM CDT | Special Weather Statement | HGX | 43 min |
| Aug 28, 5:08 PM CDT | Severe Thunderstorm Warning | HGX | 37 min |
| Aug 30, 4:13 AM CDT | Heat Advisory | HGX | 40 hr |
| Aug 31, 3:47 PM CDT | Heat Advisory | HGX | 28 hr |
| Sep 2, 4:04 AM CDT | Heat Advisory | HGX | 15 hr |
| Sep 3, 4:00 AM CDT | Heat Advisory | HGX | 14 hr |
| Sep 10, 3:33 PM CDT | Areal Flood Advisory | HGX | 57 min |
| Sep 10, 4:43 PM CDT | Areal Flood Advisory | HGX | 62 min |
| Sep 18, 10:20 PM CDT | Hurricane Watch | HGX | 30 hr |
| Sep 19, 10:12 AM CDT | Tropical Storm Warning | HGX | 3 days |
| Sep 19, 4:28 PM CDT | Flash Flood Watch | HGX | 3 days |
| Sep 22, 8:57 PM CDT | Flash Flood Warning | HGX | 2 hr |
| Sep 23, 12:19 AM CDT | Areal Flood Advisory | HGX | 116 min |
| Sep 28, 4:06 AM CDT | Wind Advisory | HGX | 17 hr |
| Oct 7, 9:54 AM CDT | Tropical Storm Watch | HGX | 12 hr |
| Oct 7, 9:57 PM CDT | Tropical Storm Warning | HGX | 48 hr |
| Oct 11, 1:51 AM CDT | Dense Fog Advisory | HGX | 7 hr |
| Oct 21, 4:30 AM CDT | Dense Fog Advisory | HGX | 5 hr |
| Oct 23, 1:51 PM CDT | Special Weather Statement | HGX | 54 min |
| Nov 8, 12:47 AM CST | Dense Fog Advisory | HGX | 8 hr |
| Nov 20, 3:03 AM CST | Dense Fog Advisory | HGX | 6 hr |
| Nov 29, 2:59 PM CST | Freeze Watch | HGX | 12 hr |
| Nov 30, 3:12 AM CST | Freeze Warning | HGX | 29 hr |
| Dec 11, 7:46 PM CST | Dense Fog Advisory | HGX | 7 hr |
| Dec 12, 4:02 AM CST | Dense Fog Advisory | HGX | 5 hr |
| Dec 13, 1:46 PM CST | Mesoscale Discussion | SPC | 119 min |
| Dec 13, 3:19 PM CST | Special Weather Statement | HGX | 86 min |
| Dec 19, 12:43 PM CST | Areal Flood Advisory | HGX | 2 hr |
| Dec 19, 12:59 PM CST | Mesoscale Discussion | SPC | 91 min |
| Dec 21, 12:22 AM CST | Dense Fog Advisory | HGX | 10 hr |
| Dec 23, 3:00 AM CST | Wind Advisory | HGX | 33 hr |
| Dec 23, 3:27 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 23, 3:35 PM CST | Special Weather Statement | HGX | 40 min |
| Dec 30, 4:48 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 31, 7:10 AM CST | Mesoscale Discussion | SPC | 95 min |
| Dec 31, 7:40 AM CST | Tornado Watch | SPC | 7 hr |
| Dec 31, 11:21 AM CST | Mesoscale Discussion | SPC | 114 min |
| Dec 31, 11:58 AM CST | Special Weather Statement | HGX | 62 min |
| Dec 31, 1:26 PM CST | Areal Flood Advisory | HGX | 2 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 21 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 17 |
| Flooding | |
| Flash Flood Warning | 1 |
| River Flood Warning | 3 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 15 |
| Heat | |
| Heat Advisory | 13 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 20 |
| Tropical | |
| Hurricane Warning | 1 |
| Storm Surge Warning | 1 |
| Tropical Storm Warning | 3 |
| Hurricane Watch | 2 |
| Tropical Storm Watch | 3 |
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.