Alert archive / Texas / San Jacinto County
Weather alerts in San Jacinto County, Texas, 2018
136 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 136
- Warnings
- 40
- Watches
- 11
- Advisories
- 40
- Busiest month
- March29 alerts
- Busiest day
- March 28, 20189 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 1 tornado warnings covering San Jacinto County in 2018 had a tornado report inside them.
San Jacinto County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 16 | 6 | 63% | 4 | 25% | 4 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Houston/Galveston, TX: tornado warnings | 16 | 1 | 94% | 7 | 14% | 3 min |
| NWS Houston/Galveston, TX: severe thunderstorm warnings | 99 | 37 | 63% | 97 | 62% | 17 min |
| NWS Houston/Galveston, TX: flash flood warnings | 39 | 15 | 62% | 51 | 63% | 58 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, 3:21 PM CST | Hard Freeze Warning | HGX | 42 hr |
| Jan 1, 3:26 PM CST | Wind Chill Advisory | HGX | 19 hr |
| Jan 3, 3:34 PM CST | Hard Freeze Warning | HGX | 17 hr |
| Jan 11, 3:48 AM CST | Wind Advisory | HGX | 32 hr |
| Jan 15, 4:46 AM CST | Winter Weather Advisory | HGX | 29 hr |
| Jan 15, 3:21 PM CST | Winter Storm Warning | HGX | 29 hr |
| Jan 16, 2:54 PM CST | Hard Freeze Warning | HGX | 19 hr |
| Jan 16, 3:15 PM CST | Wind Chill Advisory | HGX | 19 hr |
| Jan 16, 3:15 PM CST | Winter Weather Advisory | HGX | 19 hr |
| Jan 17, 1:37 PM CST | Hard Freeze Warning | HGX | 19 hr |
| Feb 3, 9:00 PM CST | Dense Fog Advisory | HGX | 13 hr |
| Feb 4, 10:20 PM CST | Dense Fog Advisory | HGX | 2 hr |
| Feb 5, 11:13 PM CST | Dense Fog Advisory | HGX | 12 hr |
| Feb 6, 2:19 PM CST | Dense Fog Advisory | HGX | 6 hr |
| Feb 13, 5:52 PM CST | Dense Fog Advisory | HGX | 18 hr |
| Feb 14, 5:59 PM CST | Dense Fog Advisory | HGX | 18 hr |
| Feb 21, 2:17 AM CST | Flash Flood Watch | HGX | 13 hr |
| Feb 21, 8:49 PM CST | River Flood Warning | HGX | 20 hr |
| Feb 23, 5:22 AM CST | Dense Fog Advisory | HGX | 7 hr |
| Feb 25, 5:01 PM CST | Areal Flood Advisory | HGX | 3 hr |
| Feb 25, 7:19 PM CST | River Flood Warning | HGX | 21 hr |
| Feb 25, 11:34 PM CST | Dense Fog Advisory | HGX | 10 hr |
| Mar 5, 11:31 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 18, 3:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Mar 18, 4:06 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 18, 6:29 PM CDT | Severe Thunderstorm Warning | HGX | 46 min |
| Mar 18, 7:03 PM CDT | Severe Thunderstorm Warning | HGX | 57 min |
| Mar 18, 7:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Mar 18, 8:08 PM CDT | Severe Thunderstorm Warning | HGX | 8 min |
| Mar 18, 8:19 PM CDT | Special Weather Statement | HGX | 41 min |
| Mar 18, 8:31 PM CDT | Severe Thunderstorm Warning | HGX | 26 min |
| Mar 27, 2:01 PM CDT | Flash Flood Watch | HGX | 41 hr |
| Mar 28, 10:51 AM CDT | Areal Flood Advisory | HGX | 54 min |
| Mar 28, 11:01 AM CDT | Severe Thunderstorm Warning | HGX | 29 min |
| Mar 28, 11:28 AM CDT | Severe Thunderstorm Warning | HGX | 32 min |
| Mar 28, 11:38 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Mar 28, 12:03 PM CDT | Tornado Watch | SPC | 9 hr |
| Mar 28, 3:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Mar 28, 5:10 PM CDT | Areal Flood Advisory | HGX | 50 min |
| Mar 28, 6:00 PM CDT | Areal Flood Advisory | HGX | 60 min |
| Mar 28, 6:32 PM CDT | Areal Flood Advisory | HGX | 58 min |
| Mar 28, 7:29 PM CDT | River Flood Warning | HGX | 35 hr |
| Mar 28, 8:28 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Mar 28, 10:09 PM CDT | Areal Flood Advisory | HGX | 3 hr |
| Mar 28, 11:33 PM CDT | Flash Flood Warning | HGX | 3 hr |
| Mar 29, 1:03 AM CDT | Areal Flood Advisory | HGX | 3 hr |
| Mar 29, 1:40 AM CDT | Flash Flood Warning | HGX | 5 hr |
| Mar 29, 2:39 AM CDT | River Flood Warning | HGX | 3 days |
| Mar 29, 3:57 AM CDT | Areal Flood Advisory | HGX | 3 hr |
| Mar 29, 9:34 AM CDT | River Flood Warning | HGX | 57 hr |
| Mar 30, 3:24 AM CDT | River Flood Warning | HGX | 20 hr |
| Apr 3, 9:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Apr 3, 5:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 3, 5:51 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 6, 9:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 7, 12:39 AM CDT | Severe Thunderstorm Warning | HGX | 51 min |
| Apr 7, 12:51 AM CDT | Severe Thunderstorm Warning | HGX | 39 min |
| Apr 13, 9:53 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 13, 11:54 PM CDT | Special Weather Statement | HGX | 36 min |
| Apr 14, 12:32 AM CDT | Special Weather Statement | HGX | 43 min |
| Jun 3, 3:49 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jun 3, 6:56 PM CDT | Special Weather Statement | HGX | 64 min |
| Jun 3, 7:16 PM CDT | Severe Thunderstorm Warning | HGX | 59 min |
| Jun 3, 7:47 PM CDT | Special Weather Statement | HGX | 58 min |
| Jun 3, 8:15 PM CDT | Severe Thunderstorm Warning | HGX | 45 min |
| Jun 3, 8:19 PM CDT | Areal Flood Advisory | HGX | 116 min |
| Jun 3, 9:00 PM CDT | Severe Thunderstorm Warning | HGX | 45 min |
| Jun 3, 9:13 PM CDT | Areal Flood Advisory | HGX | 3 hr |
| Jul 3, 6:04 PM CDT | Special Weather Statement | HGX | 41 min |
| Jul 3, 6:27 PM CDT | Severe Thunderstorm Warning | HGX | 48 min |
| Jul 3, 7:12 PM CDT | Special Weather Statement | HGX | 63 min |
| Jul 3, 7:24 PM CDT | Special Weather Statement | HGX | 66 min |
| Jul 5, 6:23 PM CDT | Special Weather Statement | HGX | 37 min |
| Jul 5, 6:38 PM CDT | Severe Thunderstorm Warning | HGX | 36 min |
| Jul 5, 7:04 PM CDT | Severe Thunderstorm Warning | HGX | 26 min |
| Jul 5, 7:32 PM CDT | Special Weather Statement | HGX | 58 min |
| Jul 5, 7:49 PM CDT | Severe Thunderstorm Warning | HGX | 41 min |
| Jul 5, 7:52 PM CDT | Severe Thunderstorm Warning | HGX | 38 min |
| Jul 20, 4:27 AM CDT | Heat Advisory | HGX | 16 hr |
| Jul 20, 3:09 PM CDT | Heat Advisory | HGX | 29 hr |
| Jul 21, 2:23 PM CDT | Heat Advisory | HGX | 30 hr |
| Jul 22, 3:59 AM CDT | Heat Advisory | HGX | 41 hr |
| Jul 31, 7:09 AM CDT | Special Weather Statement | HGX | 51 min |
| Jul 31, 8:03 AM CDT | Special Weather Statement | HGX | 42 min |
| Jul 31, 8:18 AM CDT | Areal Flood Advisory | HGX | 3 hr |
| Jul 31, 8:50 AM CDT | Special Weather Statement | HGX | 55 min |
| Jul 31, 9:16 AM CDT | Flash Flood Warning | HGX | 2 hr |
| Jul 31, 9:45 AM CDT | Special Weather Statement | HGX | 60 min |
| Jul 31, 10:13 AM CDT | Areal Flood Advisory | HGX | 2 hr |
| Jul 31, 10:44 AM CDT | Special Weather Statement | HGX | 61 min |
| Aug 4, 5:52 PM CDT | Special Weather Statement | HGX | 38 min |
| Aug 4, 6:22 PM CDT | Special Weather Statement | HGX | 38 min |
| Aug 5, 4:04 PM CDT | Special Weather Statement | HGX | 56 min |
| Aug 7, 3:39 PM CDT | Special Weather Statement | HGX | 51 min |
| Aug 8, 4:35 PM CDT | Special Weather Statement | HGX | 40 min |
| Aug 8, 5:22 PM CDT | Special Weather Statement | HGX | 53 min |
| Aug 11, 3:28 PM CDT | Special Weather Statement | HGX | 47 min |
| Aug 12, 1:15 PM CDT | Special Weather Statement | HGX | 45 min |
| Aug 12, 1:52 PM CDT | Special Weather Statement | HGX | 38 min |
| Aug 21, 4:14 PM CDT | Special Weather Statement | HGX | 61 min |
| Aug 28, 3:37 PM CDT | Special Weather Statement | HGX | 38 min |
| Aug 28, 4:18 PM CDT | Special Weather Statement | HGX | 42 min |
| Sep 2, 3:26 PM CDT | Flash Flood Watch | HGX | 45 hr |
| Sep 29, 12:29 PM CDT | Areal Flood Advisory | HGX | 2 hr |
| Oct 9, 5:42 PM CDT | Tornado Warning | HGX | 33 min |
| Oct 13, 7:41 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Oct 15, 10:51 PM CDT | Areal Flood Advisory | HGX | 3 hr |
| Oct 16, 1:44 AM CDT | Areal Flood Advisory | HGX | 3 hr |
| Oct 16, 10:02 AM CDT | River Flood Warning | HGX | 6 days |
| Oct 17, 9:42 AM CDT | River Flood Warning | HGX | 24 hr |
| Oct 31, 2:14 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 31, 3:02 PM CDT | Tornado Watch | SPC | 9 hr |
| Oct 31, 6:14 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Oct 31, 6:51 PM CDT | Special Weather Statement | HGX | 54 min |
| Nov 6, 2:16 AM CST | Dense Fog Advisory | HGX | 8 hr |
| Nov 11, 6:08 PM CST | Special Weather Statement | HGX | 37 min |
| Nov 11, 11:00 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Nov 12, 4:00 PM CST | Freeze Watch | HGX | 20 hr |
| Nov 13, 11:32 AM CST | Freeze Warning | HGX | 21 hr |
| Nov 24, 5:11 AM CST | Dense Fog Advisory | HGX | 5 hr |
| Dec 6, 5:50 AM CST | Flash Flood Watch | HGX | 46 hr |
| Dec 7, 8:32 PM CST | River Flood Warning | HGX | 9 days |
| Dec 8, 2:37 AM CST | River Flood Warning | HGX | 21 hr |
| Dec 8, 9:47 AM CST | River Flood Warning | HGX | 48 hr |
| Dec 17, 10:55 PM CST | Dense Fog Advisory | HGX | 12 hr |
| Dec 20, 3:51 AM CST | Wind Advisory | HGX | 18 hr |
| Dec 21, 2:31 PM CST | River Flood Warning | HGX | 20 hr |
| Dec 26, 9:34 PM CST | Tornado Watch | SPC | 6 hr |
| Dec 26, 11:40 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 27, 2:35 AM CST | Areal Flood Advisory | HGX | 55 min |
| Dec 27, 3:09 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 27, 3:28 AM CST | Areal Flood Advisory | HGX | 2 hr |
| Dec 27, 4:57 AM CST | Areal Flood Advisory | HGX | 3 hr |
| Dec 27, 7:20 AM CST | River Flood Warning | HGX | 30 days |
| Dec 27, 7:29 AM CST | River Flood Warning | HGX | 27 hr |
| Dec 30, 11:29 PM CST | Dense Fog Advisory | HGX | 7 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 | 1 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 29 |
| Flooding | |
| Flash Flood Warning | 3 |
| River Flood Warning | 14 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 18 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 1 |
| Hard Freeze Warning | 4 |
| Freeze Watch | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.