Alert archive / Texas / Liberty County
Weather alerts in Liberty County, Texas, 2009
173 weather alerts in 2009, 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 2009. Tap one for its archive.
- Alerts
- 173
- Warnings
- 66
- Watches
- 29
- Advisories
- 30
- Busiest month
- April45 alerts
- Busiest day
- March 27, 200912 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 Liberty County in 2009 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 13 minutes after it went out.
Liberty County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 1 | 80% | 1 | 100% | 13 min |
| Severe thunderstorm warnings | 36 | 7 | 81% | 9 | 78% | 19 min |
| Flash flood warnings | 5 | 2 | 60% | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Houston/Galveston, TX: tornado warnings | 46 | 5 | 89% | 16 | 56% | 7 min |
| NWS Houston/Galveston, TX: severe thunderstorm warnings | 221 | 57 | 74% | 129 | 76% | 19 min |
| NWS Houston/Galveston, TX: flash flood warnings | 41 | 16 | 61% | 56 | 86% | 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 2, 4:04 AM CST | Dense Fog Advisory | HGX | 8 hr |
| Jan 13, 9:35 AM CST | Red Flag Warning | HGX | 8 hr |
| Jan 18, 3:42 PM CST | Fire Weather Watch | HGX | 6 hr |
| Jan 18, 9:20 PM CST | Red Flag Warning | HGX | 21 hr |
| Jan 19, 7:04 AM CST | Fire Weather Watch | HGX | 22 hr |
| Jan 20, 5:27 AM CST | Red Flag Warning | HGX | 13 hr |
| Feb 1, 3:03 PM CST | Mesoscale Discussion | SPC | 117 min |
| Feb 1, 3:12 PM CST | Red Flag Warning | HGX | 24 hr |
| Feb 1, 5:53 PM CST | Severe Thunderstorm Warning | HGX | 22 min |
| Feb 1, 10:30 PM CST | Mesoscale Discussion | SPC | 90 min |
| Feb 10, 9:57 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Feb 11, 12:46 AM CST | Severe Thunderstorm Warning | HGX | 44 min |
| Feb 11, 1:21 AM CST | Severe Thunderstorm Warning | HGX | 39 min |
| Feb 17, 3:49 PM CST | Fire Weather Watch | HGX | 13 hr |
| Feb 28, 2:57 PM CST | Red Flag Warning | HGX | 27 hr |
| Mar 16, 8:10 PM CDT | Dense Fog Advisory | HGX | 14 hr |
| Mar 17, 8:04 PM CDT | Dense Fog Advisory | HGX | 14 hr |
| Mar 18, 8:31 PM CDT | Dense Fog Advisory | HGX | 14 hr |
| Mar 19, 9:20 PM CDT | Dense Fog Advisory | HGX | 9 hr |
| Mar 25, 12:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Mar 25, 7:12 PM CDT | Tornado Watch | SPC | 6 hr |
| Mar 25, 8:25 PM CDT | Tornado Warning | HGX | 50 min |
| Mar 25, 9:05 PM CDT | Severe Thunderstorm Warning | HGX | 40 min |
| Mar 26, 12:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 26, 3:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Mar 27, 10:24 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Mar 27, 11:48 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 27, 3:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Mar 27, 3:56 PM CDT | Severe Thunderstorm Warning | HGX | 34 min |
| Mar 27, 4:19 PM CDT | Tornado Warning | HGX | 26 min |
| Mar 27, 4:30 PM CDT | Severe Thunderstorm Warning | HGX | 30 min |
| Mar 27, 4:42 PM CDT | Tornado Warning | HGX | 33 min |
| Mar 27, 4:49 PM CDT | Tornado Watch | SPC | 3 hr |
| Mar 27, 5:02 PM CDT | Severe Thunderstorm Warning | HGX | 28 min |
| Mar 27, 5:13 PM CDT | Severe Thunderstorm Warning | HGX | 47 min |
| Mar 27, 5:56 PM CDT | Severe Thunderstorm Warning | HGX | 49 min |
| Mar 27, 6:21 PM CDT | Severe Thunderstorm Warning | HGX | 39 min |
| Apr 1, 3:13 PM CDT | Fire Weather Watch | HGX | 17 hr |
| Apr 2, 1:49 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 2, 7:36 AM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 2, 7:47 AM CDT | Red Flag Warning | HGX | 11 hr |
| Apr 2, 11:19 AM CDT | Wind Advisory | HGX | 8 hr |
| Apr 5, 5:55 AM CDT | Wind Advisory | HGX | 13 hr |
| Apr 5, 7:16 PM CDT | Fire Weather Watch | HGX | 17 hr |
| Apr 12, 4:37 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 12, 7:39 AM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 12, 7:58 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 12, 10:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 12, 11:39 AM CDT | Severe Thunderstorm Warning | HGX | 14 min |
| Apr 12, 12:15 PM CDT | Severe Thunderstorm Warning | HGX | 45 min |
| Apr 12, 12:17 PM CDT | Tornado Warning | HGX | 43 min |
| Apr 12, 12:53 PM CDT | Severe Thunderstorm Warning | HGX | 52 min |
| Apr 17, 9:56 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 17, 10:24 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 17, 11:24 AM CDT | Flood Watch | HGX | 33 hr |
| Apr 17, 1:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 17, 3:15 PM CDT | Areal Flood Advisory | HGX | 3 hr |
| Apr 17, 3:44 PM CDT | Tornado Watch | SPC | 6 hr |
| Apr 17, 4:01 PM CDT | Severe Thunderstorm Warning | HGX | 59 min |
| Apr 17, 4:28 PM CDT | Flash Flood Warning | HGX | 3 hr |
| Apr 17, 6:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 17, 11:51 PM CDT | Severe Thunderstorm Warning | HGX | 39 min |
| Apr 18, 9:47 AM CDT | Mesoscale Discussion | SPC | 28 min |
| Apr 18, 9:53 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 18, 11:26 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 18, 12:15 PM CDT | Severe Thunderstorm Warning | HGX | 45 min |
| Apr 18, 1:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 18, 5:21 PM CDT | River Flood Warning | HGX | 17 hr |
| Apr 18, 11:41 PM CDT | River Flood Warning | HGX | 4 days |
| Apr 18, 11:41 PM CDT | River Flood Warning | HGX | 57 hr |
| Apr 18, 11:56 PM CDT | Dense Fog Advisory | HGX | 8 hr |
| Apr 27, 3:47 PM CDT | Flood Watch | HGX | 5 hr |
| Apr 27, 3:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 27, 3:58 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 27, 6:27 PM CDT | Severe Thunderstorm Warning | HGX | 63 min |
| Apr 27, 6:30 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 27, 7:03 PM CDT | Flash Flood Warning | HGX | 117 min |
| Apr 27, 7:26 PM CDT | Severe Thunderstorm Warning | HGX | 64 min |
| Apr 28, 1:19 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 28, 3:27 AM CDT | Flood Watch | HGX | 12 hr |
| Apr 30, 10:04 AM CDT | River Flood Warning | HGX | 25 hr |
| Apr 30, 10:04 AM CDT | River Flood Warning | HGX | 25 hr |
| May 3, 5:12 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 3, 6:54 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 7:13 AM CDT | Severe Thunderstorm Warning | HGX | 62 min |
| May 3, 8:10 AM CDT | Severe Thunderstorm Warning | HGX | 50 min |
| May 4, 11:04 AM CDT | River Flood Warning | HGX | 34 hr |
| May 4, 11:04 AM CDT | River Flood Warning | HGX | 46 hr |
| May 11, 1:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 11, 1:42 PM CDT | Severe Thunderstorm Warning | HGX | 24 min |
| May 11, 2:10 PM CDT | Severe Thunderstorm Warning | HGX | 50 min |
| May 11, 2:49 PM CDT | Severe Thunderstorm Warning | HGX | 41 min |
| May 11, 2:52 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 11, 3:27 PM CDT | Severe Thunderstorm Warning | HGX | 48 min |
| May 11, 4:45 PM CDT | Severe Thunderstorm Warning | HGX | 27 min |
| May 16, 7:06 PM CDT | Areal Flood Advisory | HGX | 54 min |
| May 26, 3:06 PM CDT | Severe Thunderstorm Warning | HGX | 9 min |
| Jun 3, 1:20 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 3, 2:19 PM CDT | Severe Thunderstorm Warning | HGX | 41 min |
| Jun 11, 5:22 AM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 24, 4:04 PM CDT | Heat Advisory | HGX | 5 days |
| Jun 29, 8:06 PM CDT | Heat Advisory | HGX | 17 hr |
| Jun 30, 4:58 PM CDT | Severe Thunderstorm Warning | HGX | 47 min |
| Jul 4, 8:51 AM CDT | Heat Advisory | HGX | 34 hr |
| Jul 7, 5:36 AM CDT | Special Weather Statement | HGX | 39 min |
| Jul 8, 4:53 PM CDT | Severe Thunderstorm Warning | HGX | 22 min |
| Jul 8, 5:17 PM CDT | Severe Thunderstorm Warning | HGX | 43 min |
| Jul 8, 9:08 PM CDT | Heat Advisory | HGX | 4 days |
| Jul 19, 2:36 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 19, 5:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 21, 2:05 PM CDT | Special Weather Statement | HGX | 40 min |
| Jul 25, 5:09 PM CDT | Special Weather Statement | HGX | 66 min |
| Jul 31, 9:29 AM CDT | Flash Flood Warning | HGX | 61 min |
| Aug 4, 7:03 PM CDT | Heat Advisory | HGX | 3 days |
| Aug 10, 3:10 PM CDT | Heat Advisory | HGX | 24 hr |
| Aug 12, 7:15 PM CDT | Severe Thunderstorm Warning | HGX | 45 min |
| Aug 20, 5:52 PM CDT | Severe Thunderstorm Warning | HGX | 38 min |
| Aug 21, 4:28 AM CDT | Heat Advisory | HGX | 40 hr |
| Aug 21, 3:31 PM CDT | Severe Thunderstorm Warning | HGX | 29 min |
| Aug 21, 3:54 PM CDT | Severe Thunderstorm Warning | HGX | 51 min |
| Aug 23, 2:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Aug 24, 5:46 PM CDT | Special Weather Statement | HGX | 29 min |
| Aug 24, 6:15 PM CDT | Special Weather Statement | HGX | 60 min |
| Aug 24, 6:47 PM CDT | Severe Thunderstorm Warning | HGX | 28 min |
| Aug 26, 10:07 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Aug 26, 10:47 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 26, 1:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Sep 21, 4:12 PM CDT | Severe Thunderstorm Warning | HGX | 48 min |
| Sep 27, 1:06 AM CDT | Dense Fog Advisory | HGX | 8 hr |
| Sep 28, 1:14 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 29, 9:14 AM CDT | Special Weather Statement | HGX | 46 min |
| Oct 1, 9:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Oct 22, 5:08 AM CDT | Areal Flood Advisory | HGX | 112 min |
| Oct 22, 5:26 AM CDT | Special Weather Statement | HGX | 64 min |
| Oct 22, 5:35 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Oct 22, 5:55 AM CDT | Tornado Watch | SPC | 6 hr |
| Oct 22, 6:46 AM CDT | Flash Flood Warning | HGX | 119 min |
| Oct 22, 7:01 AM CDT | Tornado Warning | HGX | 44 min |
| Oct 22, 7:48 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Oct 22, 8:56 PM CDT | River Flood Warning | HGX | 39 hr |
| Oct 22, 8:56 PM CDT | River Flood Warning | HGX | 30 days |
| Oct 25, 3:43 PM CDT | Flash Flood Watch | HGX | 24 hr |
| Oct 26, 7:38 AM CDT | Areal Flood Advisory | HGX | 112 min |
| Oct 26, 10:03 AM CDT | River Flood Warning | HGX | 20 days |
| Oct 28, 5:15 AM CDT | Flash Flood Watch | HGX | 47 hr |
| Oct 29, 5:19 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Oct 29, 10:48 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Oct 29, 11:19 AM CDT | Wind Advisory | HGX | 9 hr |
| Oct 29, 1:14 PM CDT | Tornado Watch | SPC | 8 hr |
| Oct 29, 3:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Oct 29, 5:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Oct 29, 7:06 PM CDT | Areal Flood Advisory | HGX | 114 min |
| Oct 29, 8:20 PM CDT | Flash Flood Warning | HGX | 3 hr |
| Oct 29, 9:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Oct 30, 10:04 AM CDT | River Flood Warning | HGX | 35 hr |
| Nov 1, 7:46 AM CST | River Flood Warning | HGX | 23 hr |
| Nov 22, 8:56 PM CST | Dense Fog Advisory | HGX | 13 hr |
| Dec 3, 4:55 AM CST | Winter Storm Watch | HGX | 17 hr |
| Dec 3, 7:43 AM CST | Freeze Warning | HGX | 49 hr |
| Dec 3, 10:17 PM CST | Winter Storm Warning | HGX | 20 hr |
| Dec 4, 5:22 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 7, 1:16 AM CST | Dense Fog Advisory | HGX | 7 hr |
| Dec 8, 5:07 AM CST | Dense Fog Advisory | HGX | 5 hr |
| Dec 12, 3:30 PM CST | Dense Fog Advisory | HGX | 18 hr |
| Dec 13, 3:01 PM CST | Dense Fog Advisory | HGX | 19 hr |
| Dec 14, 2:56 PM CST | Dense Fog Advisory | HGX | 18 hr |
| Dec 15, 3:22 AM CST | Mesoscale Discussion | SPC | 83 min |
| Dec 23, 2:37 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 23, 8:48 PM CST | Tornado Watch | SPC | 9 hr |
| Dec 23, 9:32 PM CST | Wind Advisory | HGX | 30 hr |
| Dec 23, 11:06 PM CST | Mesoscale Discussion | SPC | 114 min |
| Dec 24, 3:30 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 30, 11:57 PM CST | Dense Fog Advisory | HGX | 12 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 | 36 |
| Tornado Warning | 5 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 10 |
| Mesoscale Discussion | 41 |
| Special Weather Statement | 7 |
| Flooding | |
| Flash Flood Warning | 5 |
| River Flood Warning | 12 |
| Flash Flood Watch | 2 |
| Flood Watch | 3 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Heat | |
| Heat Advisory | 7 |
| Cold | |
| Freeze Warning | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 6 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 14 |
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.