Alert archive / Texas / Houston County
Weather alerts in Houston County, Texas, 2020
111 weather alerts in 2020, 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 2020. Tap one for its archive.
- Alerts
- 111
- Warnings
- 31
- Watches
- 11
- Advisories
- 23
- Busiest month
- April37 alerts
- Busiest day
- April 22, 202015 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 3 tornado warnings covering Houston County in 2020 had a tornado report inside them.
Houston County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 16 | 9 | 44% | 12 | 75% | 21 min |
| Flash flood warnings | 0 | 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, 10:53 PM CST | Dense Fog Advisory | HGX | 9 hr |
| Jan 10, 4:55 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 10, 7:30 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 10, 9:09 PM CST | Tornado Watch | SPC | 5 hr |
| Jan 10, 10:15 PM CST | Severe Thunderstorm Warning | HGX | 45 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 12, 8:02 AM CST | River Flood Warning | SHV | 31 days |
| Feb 16, 10:50 AM CST | River Flood Warning | SHV | 26 days |
| Feb 19, 7:52 PM CST | River Flood Warning | SHV | 29 days |
| Mar 4, 4:20 AM CST | Mesoscale Discussion | SPC | 115 min |
| Mar 4, 7:33 AM CST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 4, 9:58 AM CST | Special Weather Statement | HGX | 32 min |
| Mar 4, 10:23 AM CST | Severe Thunderstorm Warning | HGX | 37 min |
| Mar 4, 10:37 AM CST | Special Weather Statement | HGX | 23 min |
| Mar 4, 10:50 AM CST | Mesoscale Discussion | SPC | 115 min |
| Mar 4, 11:10 AM CST | Severe Thunderstorm Warning | HGX | 20 min |
| Mar 10, 5:00 AM CDT | Dense Fog Advisory | HGX | 5 hr |
| Mar 20, 8:01 AM CDT | River Flood Warning | SHV | 44 days |
| Mar 20, 8:01 AM CDT | River Flood Warning | SHV | 25 days |
| Mar 22, 8:10 AM CDT | River Flood Warning | SHV | 21 days |
| Mar 28, 8:23 PM CDT | River Flood Warning | HGX | 48 hr |
| Apr 9, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 9, 5:47 PM CDT | Severe Thunderstorm Warning | HGX | 43 min |
| Apr 12, 5:52 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 12, 7:18 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 12, 7:48 AM CDT | Special Weather Statement | HGX | 42 min |
| Apr 12, 8:32 AM CDT | Special Weather Statement | HGX | 13 min |
| Apr 12, 2:12 PM CDT | River Flood Warning | SHV | 21 days |
| Apr 19, 7:22 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Apr 19, 8:41 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 19, 9:04 AM CDT | River Flood Warning | SHV | 17 days |
| Apr 19, 2:13 PM CDT | Special Weather Statement | HGX | 47 min |
| Apr 19, 11:05 PM CDT | Dense Fog Advisory | HGX | 9 hr |
| Apr 22, 10:38 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 22, 10:55 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 22, 11:52 AM CDT | Special Weather Statement | HGX | 38 min |
| Apr 22, 12:24 PM CDT | Special Weather Statement | HGX | 51 min |
| Apr 22, 1:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Apr 22, 2:19 PM CDT | Severe Thunderstorm Warning | HGX | 26 min |
| Apr 22, 2:25 PM CDT | Tornado Warning | HGX | 20 min |
| Apr 22, 2:45 PM CDT | Severe Thunderstorm Warning | HGX | 30 min |
| Apr 22, 2:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 22, 3:05 PM CDT | Tornado Warning | HGX | 10 min |
| Apr 22, 4:06 PM CDT | Special Weather Statement | HGX | 39 min |
| Apr 22, 4:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Apr 22, 4:37 PM CDT | Tornado Warning | HGX | 23 min |
| Apr 22, 5:01 PM CDT | Severe Thunderstorm Warning | HGX | 44 min |
| Apr 22, 5:01 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 24, 7:32 PM CDT | Special Weather Statement | HGX | 58 min |
| Apr 24, 7:39 PM CDT | Special Weather Statement | FWD | 36 min |
| Apr 24, 7:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Apr 24, 8:04 PM CDT | Special Weather Statement | HGX | 41 min |
| Apr 24, 8:38 PM CDT | Severe Thunderstorm Warning | HGX | 37 min |
| Apr 28, 8:25 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Apr 29, 1:32 AM CDT | Severe Thunderstorm Warning | HGX | 58 min |
| Apr 29, 1:56 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 29, 2:28 AM CDT | Severe Thunderstorm Warning | HGX | 62 min |
| Apr 29, 2:50 AM CDT | Severe Thunderstorm Warning | HGX | 55 min |
| May 5, 6:52 PM CDT | Special Weather Statement | HGX | 38 min |
| May 14, 5:48 PM CDT | Areal Flood Advisory | HGX | 117 min |
| May 22, 4:39 PM CDT | Special Weather Statement | HGX | 36 min |
| May 22, 5:04 PM CDT | Special Weather Statement | HGX | 41 min |
| May 24, 12:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 24, 2:31 PM CDT | Special Weather Statement | HGX | 59 min |
| May 24, 3:42 PM CDT | Special Weather Statement | HGX | 48 min |
| Jun 8, 3:08 PM CDT | Heat Advisory | HGX | 28 hr |
| Jun 9, 8:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 9, 10:22 PM CDT | Special Weather Statement | HGX | 38 min |
| Jun 9, 10:35 PM CDT | Severe Thunderstorm Warning | HGX | 40 min |
| Jun 9, 11:10 PM CDT | Severe Thunderstorm Warning | HGX | 35 min |
| Jun 20, 6:28 PM CDT | Special Weather Statement | HGX | 47 min |
| Jun 20, 6:40 PM CDT | Special Weather Statement | HGX | 50 min |
| Jun 23, 12:16 PM CDT | Flash Flood Watch | HGX | 19 hr |
| Jul 6, 4:59 AM CDT | Special Weather Statement | HGX | 46 min |
| Jul 8, 7:41 AM CDT | River Flood Warning | SHV | 21 days |
| 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 28, 4:48 PM CDT | Special Weather Statement | HGX | 27 min |
| Jul 28, 5:14 PM CDT | Special Weather Statement | HGX | 46 min |
| Jul 31, 2:06 PM CDT | Special Weather Statement | HGX | 39 min |
| Jul 31, 3:21 PM CDT | Special Weather Statement | HGX | 39 min |
| Jul 31, 3:42 PM CDT | Severe Thunderstorm Warning | HGX | 21 min |
| Aug 12, 3:05 AM CDT | Heat Advisory | HGX | 5 days |
| Aug 16, 10:33 PM CDT | Special Weather Statement | HGX | 42 min |
| Aug 16, 10:47 PM CDT | Special Weather Statement | FWD | 43 min |
| Aug 16, 11:13 PM CDT | Special Weather Statement | HGX | 62 min |
| Aug 16, 11:44 PM CDT | Severe Thunderstorm Warning | HGX | 46 min |
| Aug 17, 12:09 AM CDT | Severe Thunderstorm Warning | HGX | 51 min |
| Aug 25, 10:04 AM CDT | Tropical Storm Warning | HGX | 48 hr |
| Aug 28, 3:59 AM CDT | Heat Advisory | HGX | 18 hr |
| Aug 28, 3:07 PM CDT | Heat Advisory | HGX | 30 hr |
| Aug 30, 4:13 AM CDT | Heat Advisory | HGX | 40 hr |
| Aug 31, 3:47 PM CDT | Heat Advisory | HGX | 28 hr |
| Sep 3, 11:46 AM CDT | Special Weather Statement | HGX | 59 min |
| Oct 21, 4:30 AM CDT | Dense Fog Advisory | HGX | 5 hr |
| Nov 5, 7:42 AM CST | Dense Fog Advisory | HGX | 78 min |
| Nov 25, 1:17 AM CST | Mesoscale Discussion | SPC | 118 min |
| Nov 25, 1:27 AM CST | Special Weather Statement | HGX | 63 min |
| Nov 27, 2:52 PM CST | Special Weather Statement | HGX | 23 min |
| 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 23, 3:00 AM CST | Wind Advisory | HGX | 33 hr |
| Dec 30, 11:29 AM CST | Flash Flood Watch | HGX | 28 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 | 16 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 30 |
| Flooding | |
| River Flood Warning | 10 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 1 |
| Heat | |
| Heat Advisory | 11 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 10 |
| Tropical | |
| Tropical Storm Warning | 1 |
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.