Alert archive / Texas / San Jacinto County
Weather alerts in San Jacinto County, Texas, 2019
146 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
San Jacinto County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 146
- Warnings
- 35
- Watches
- 20
- Advisories
- 39
- Busiest month
- April37 alerts
- Busiest day
- April 7, 201911 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 2 tornado warnings covering San Jacinto County in 2019 had a tornado report inside them.
San Jacinto County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 0 | ||
| Severe thunderstorm warnings | 16 | 5 | 69% | 2 | 0% | |
| Flash flood warnings | 6 | 2 | 67% | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Houston/Galveston, TX: tornado warnings | 45 | 8 | 82% | 18 | 72% | 8 min |
| NWS Houston/Galveston, TX: severe thunderstorm warnings | 158 | 64 | 59% | 147 | 72% | 21 min |
| NWS Houston/Galveston, TX: flash flood warnings | 67 | 29 | 57% | 89 | 89% | 101 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 1, 3:12 AM CST | Dense Fog Advisory | HGX | 6 hr |
| Jan 1, 3:10 PM CST | Flash Flood Watch | HGX | 45 hr |
| Jan 3, 4:27 AM CST | Areal Flood Advisory | HGX | 2 hr |
| Jan 3, 6:30 AM CST | Areal Flood Advisory | HGX | 2 hr |
| Jan 6, 2:12 AM CST | Dense Fog Advisory | HGX | 8 hr |
| Jan 19, 2:12 AM CST | Special Weather Statement | HGX | 48 min |
| Jan 19, 2:47 AM CST | Special Weather Statement | HGX | 28 min |
| Jan 19, 3:58 AM CST | Wind Advisory | HGX | 18 hr |
| Jan 27, 5:22 AM CST | Dense Fog Advisory | HGX | 6 hr |
| Feb 3, 10:11 PM CST | Dense Fog Advisory | HGX | 14 hr |
| Feb 8, 2:38 PM CST | Special Weather Statement | HGX | 82 min |
| Feb 15, 12:58 AM CST | Dense Fog Advisory | HGX | 6 hr |
| Feb 22, 7:05 AM CST | Dense Fog Advisory | HGX | 6 hr |
| Feb 22, 5:39 PM CST | Dense Fog Advisory | HGX | 17 hr |
| Feb 23, 6:57 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 23, 9:53 AM CST | Special Weather Statement | HGX | 52 min |
| Feb 26, 3:13 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 26, 4:00 PM CST | Special Weather Statement | HGX | 45 min |
| Feb 26, 11:42 PM CST | Dense Fog Advisory | HGX | 34 hr |
| Mar 3, 3:27 PM CST | Freeze Watch | HGX | 24 hr |
| Mar 4, 3:21 PM CST | Hard Freeze Warning | HGX | 18 hr |
| Mar 5, 3:28 PM CST | Freeze Warning | HGX | 17 hr |
| Mar 9, 10:20 PM CST | Dense Fog Advisory | HGX | 12 hr |
| Mar 11, 1:38 AM CDT | Dense Fog Advisory | HGX | 8 hr |
| Mar 13, 2:54 AM CDT | Wind Advisory | HGX | 7 hr |
| Mar 14, 1:59 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 25, 12:10 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 4, 7:10 PM CDT | Dense Fog Advisory | HGX | 15 hr |
| Apr 6, 9:08 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 6, 10:27 AM CDT | Special Weather Statement | HGX | 33 min |
| Apr 6, 10:35 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 6, 11:03 AM CDT | Special Weather Statement | HGX | 27 min |
| Apr 6, 1:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Apr 6, 3:03 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 6, 4:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Apr 6, 5:54 PM CDT | Tornado Watch | SPC | 4 hr |
| Apr 6, 7:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 7, 6:41 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 7, 7:11 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 7, 11:13 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 7, 12:20 PM CDT | Severe Thunderstorm Warning | HGX | 40 min |
| Apr 7, 12:54 PM CDT | Tornado Warning | HGX | 21 min |
| Apr 7, 12:58 PM CDT | Severe Thunderstorm Warning | HGX | 47 min |
| Apr 7, 1:35 PM CDT | Severe Thunderstorm Warning | HGX | 55 min |
| Apr 7, 1:46 PM CDT | Severe Thunderstorm Warning | HGX | 44 min |
| Apr 7, 1:48 PM CDT | Tornado Warning | HGX | 27 min |
| Apr 7, 2:01 PM CDT | Severe Thunderstorm Warning | HGX | 44 min |
| Apr 10, 9:22 AM CDT | River Flood Warning | HGX | 24 hr |
| Apr 12, 10:14 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 13, 11:11 AM CDT | Mesoscale Discussion | SPC | 34 min |
| Apr 13, 11:26 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 13, 1:26 PM CDT | Special Weather Statement | HGX | 49 min |
| Apr 13, 1:44 PM CDT | Severe Thunderstorm Warning | HGX | 31 min |
| Apr 13, 2:04 PM CDT | Severe Thunderstorm Warning | HGX | 26 min |
| Apr 13, 2:50 PM CDT | Special Weather Statement | HGX | 40 min |
| Apr 13, 3:08 PM CDT | Severe Thunderstorm Warning | HGX | 9 min |
| Apr 18, 12:54 AM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 18, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 18, 3:35 AM CDT | Special Weather Statement | HGX | 40 min |
| Apr 18, 3:51 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Apr 19, 9:18 AM CDT | River Flood Warning | HGX | 76 days |
| Apr 24, 3:47 PM CDT | Mesoscale Discussion | SPC | 43 min |
| Apr 24, 4:49 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 24, 7:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 2, 4:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| May 3, 3:41 PM CDT | Flash Flood Watch | HGX | 12 hr |
| May 7, 12:25 PM CDT | Areal Flood Advisory | HGX | 2 hr |
| May 8, 12:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| May 8, 12:58 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 8, 2:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 8, 2:16 PM CDT | Tornado Watch | SPC | 6 hr |
| May 8, 10:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 9, 4:34 AM CDT | Flash Flood Watch | HGX | 59 hr |
| May 9, 5:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| May 9, 6:31 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 9, 6:50 PM CDT | Special Weather Statement | HGX | 40 min |
| May 9, 7:25 PM CDT | Areal Flood Advisory | HGX | 2 hr |
| May 9, 7:39 PM CDT | Severe Thunderstorm Warning | HGX | 51 min |
| May 9, 8:08 PM CDT | Severe Thunderstorm Warning | HGX | 37 min |
| May 9, 8:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 9, 8:46 PM CDT | Severe Thunderstorm Warning | HGX | 44 min |
| May 10, 8:10 AM CDT | River Flood Warning | HGX | 4 days |
| May 18, 5:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| May 18, 7:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| May 18, 10:16 PM CDT | Tornado Watch | SPC | 6 hr |
| May 18, 11:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 30, 6:08 AM CDT | Special Weather Statement | HGX | 52 min |
| May 31, 1:11 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 2:22 PM CDT | Areal Flood Advisory | HGX | 53 min |
| Jun 4, 6:14 AM CDT | Flash Flood Watch | HGX | 37 hr |
| Jun 9, 3:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 16, 11:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 1:07 PM CDT | Severe Thunderstorm Warning | HGX | 38 min |
| Jun 16, 4:56 PM CDT | Areal Flood Advisory | HGX | 2 hr |
| Jun 16, 5:23 PM CDT | Flash Flood Warning | HGX | 76 min |
| Jun 16, 7:28 PM CDT | Flash Flood Watch | HGX | 12 hr |
| Jun 16, 9:26 PM CDT | River Flood Warning | HGX | 12 hr |
| Jun 16, 10:31 PM CDT | Severe Thunderstorm Warning | HGX | 29 min |
| Jun 19, 8:51 PM CDT | Heat Advisory | HGX | 22 hr |
| Jun 19, 10:24 PM CDT | Mesoscale Discussion | SPC | 36 min |
| Jun 19, 10:50 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 20, 7:16 PM CDT | Heat Advisory | HGX | 24 hr |
| Jun 23, 1:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 23, 1:52 PM CDT | Heat Advisory | HGX | 6 hr |
| Jun 23, 3:24 PM CDT | Special Weather Statement | HGX | 36 min |
| Jun 23, 3:46 PM CDT | Severe Thunderstorm Warning | HGX | 29 min |
| Jun 27, 2:39 PM CDT | Special Weather Statement | HGX | 66 min |
| Jun 29, 4:31 PM CDT | Severe Thunderstorm Warning | HGX | 29 min |
| Jul 9, 4:51 AM CDT | Heat Advisory | HGX | 14 hr |
| Jul 10, 11:44 PM CDT | Special Weather Statement | HGX | 46 min |
| Jul 15, 4:28 AM CDT | Areal Flood Advisory | HGX | 2 hr |
| Jul 15, 5:21 AM CDT | Flash Flood Warning | HGX | 114 min |
| Jul 16, 5:31 PM CDT | Special Weather Statement | HGX | 44 min |
| Jul 30, 4:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 7, 10:06 AM CDT | Heat Advisory | HGX | 3 days |
| Aug 11, 4:21 AM CDT | Heat Advisory | HGX | 4 days |
| Aug 17, 4:20 AM CDT | Heat Advisory | HGX | 15 hr |
| Aug 25, 3:43 PM CDT | Heat Advisory | HGX | 27 hr |
| Aug 26, 9:23 PM CDT | Heat Advisory | HGX | 22 hr |
| Sep 10, 4:12 PM CDT | Areal Flood Advisory | HGX | 63 min |
| Sep 10, 6:07 PM CDT | Special Weather Statement | HGX | 38 min |
| Sep 11, 3:51 PM CDT | Severe Thunderstorm Warning | HGX | 24 min |
| Sep 11, 4:11 PM CDT | Flash Flood Warning | HGX | 38 min |
| Sep 17, 4:14 AM CDT | Flash Flood Watch | HGX | 4 days |
| Sep 18, 6:55 AM CDT | Areal Flood Advisory | HGX | 4 hr |
| Sep 18, 9:51 AM CDT | Areal Flood Advisory | HGX | 3 hr |
| Sep 18, 10:50 AM CDT | Areal Flood Advisory | HGX | 3 hr |
| Sep 19, 4:15 AM CDT | Flash Flood Warning | HGX | 3 hr |
| Sep 19, 7:00 AM CDT | Flash Flood Warning | HGX | 7 hr |
| Sep 19, 8:12 AM CDT | River Flood Warning | HGX | 33 hr |
| Sep 19, 2:00 PM CDT | Flash Flood Warning | HGX | 3 hr |
| Sep 19, 4:34 PM CDT | Areal Flood Warning | HGX | 18 hr |
| Sep 21, 7:28 AM CDT | Areal Flood Warning | HGX | 18 hr |
| Oct 10, 11:14 AM CDT | Wind Advisory | HGX | 38 hr |
| Oct 20, 6:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Oct 21, 6:12 AM CDT | Special Weather Statement | HGX | 78 min |
| Oct 31, 10:32 AM CDT | Freeze Warning | HGX | 22 hr |
| Nov 11, 3:33 AM CST | Wind Advisory | HGX | 35 hr |
| Nov 12, 3:48 AM CST | Hard Freeze Watch | HGX | 11 hr |
| Nov 12, 3:16 PM CST | Hard Freeze Warning | HGX | 17 hr |
| Nov 29, 6:44 AM CST | Dense Fog Advisory | HGX | 5 hr |
| Dec 16, 10:44 AM CST | Special Weather Statement | HGX | 46 min |
| Dec 16, 11:27 AM CST | Special Weather Statement | HGX | 48 min |
| Dec 24, 7:25 PM CST | Dense Fog Advisory | HGX | 15 hr |
| Dec 25, 7:48 PM CST | Dense Fog Advisory | HGX | 16 hr |
| Dec 26, 4:48 PM CST | Dense Fog Advisory | HGX | 19 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 | 2 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 32 |
| Special Weather Statement | 20 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 6 |
| River Flood Warning | 5 |
| Flash Flood Watch | 6 |
| Areal Flood Advisory | 11 |
| Heat | |
| Heat Advisory | 9 |
| Cold | |
| Freeze Warning | 2 |
| Hard Freeze Warning | 2 |
| Freeze Watch | 1 |
| Hard Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 15 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.