Alert archive / Texas / La Salle County
Weather alerts in La Salle County, Texas, 2009
87 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
La Salle County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 87
- Warnings
- 32
- Watches
- 15
- Advisories
- 31
- Busiest month
- April22 alerts
- Busiest day
- April 18, 20097 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
La Salle County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 0 | 100% | 0 | ||
| Flash flood warnings | 4 | 0 | 100% | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Corpus Christi, TX: tornado warnings | 14 | 1 | 93% | 6 | 33% | 3 min |
| NWS Corpus Christi, TX: severe thunderstorm warnings | 104 | 19 | 82% | 37 | 68% | 20 min |
| NWS Corpus Christi, TX: flash flood warnings | 28 | 5 | 82% | 9 | 78% | 61 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 4, 3:43 AM CST | Dense Fog Advisory | CRP | 6 hr |
| Jan 11, 2:58 PM CST | Freeze Warning | CRP | 18 hr |
| Jan 13, 2:56 PM CST | Freeze Warning | CRP | 18 hr |
| Jan 18, 4:42 PM CST | Fire Weather Watch | CRP | 11 hr |
| Jan 19, 12:20 AM CST | Red Flag Warning | CRP | 18 hr |
| Jan 19, 3:31 AM CST | Fire Weather Watch | CRP | 11 hr |
| Jan 19, 2:29 PM CST | Red Flag Warning | CRP | 27 hr |
| Feb 1, 3:58 AM CST | Fire Weather Watch | CRP | 11 hr |
| Feb 1, 3:00 PM CST | Red Flag Warning | CRP | 27 hr |
| Feb 2, 2:05 PM CST | Freeze Warning | CRP | 18 hr |
| Feb 6, 5:12 AM CST | Red Flag Warning | CRP | 13 hr |
| Feb 9, 2:22 PM CST | Fire Weather Watch | CRP | 16 hr |
| Feb 10, 6:01 AM CST | Red Flag Warning | CRP | 34 hr |
| Feb 26, 4:08 AM CST | Fire Weather Watch | CRP | 35 hr |
| Feb 27, 3:12 PM CST | Red Flag Warning | CRP | 27 hr |
| Feb 28, 3:55 AM CST | Wind Advisory | CRP | 9 hr |
| Mar 1, 2:41 PM CST | Freeze Warning | CRP | 17 hr |
| Mar 2, 4:17 AM CST | Fire Weather Watch | CRP | 23 hr |
| Mar 5, 6:03 AM CST | Fire Weather Watch | CRP | 24 hr |
| Mar 6, 5:06 AM CST | Wind Advisory | CRP | 12 hr |
| Mar 6, 6:05 AM CST | Red Flag Warning | CRP | 12 hr |
| Mar 16, 9:49 PM CDT | Dense Fog Advisory | CRP | 12 hr |
| Mar 26, 6:02 AM CDT | Fire Weather Watch | CRP | 33 hr |
| Mar 26, 12:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 27, 5:02 AM CDT | Red Flag Warning | CRP | 35 hr |
| Mar 27, 3:19 PM CDT | Wind Advisory | CRP | 6 hr |
| Mar 27, 3:28 PM CDT | Red Flag Warning | CRP | 25 hr |
| Mar 31, 5:12 AM CDT | Fire Weather Watch | CRP | 39 hr |
| Apr 1, 8:00 PM CDT | Red Flag Warning | CRP | 22 hr |
| Apr 2, 10:26 AM CDT | Wind Advisory | CRP | 8 hr |
| Apr 4, 3:15 PM CDT | Red Flag Warning | CRP | 29 hr |
| Apr 11, 4:03 PM CDT | Fire Weather Watch | CRP | 12 hr |
| Apr 12, 3:58 AM CDT | Red Flag Warning | CRP | 15 hr |
| Apr 17, 9:56 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Apr 17, 12:34 PM CDT | Severe Thunderstorm Warning | CRP | 41 min |
| Apr 17, 12:38 PM CDT | Mesoscale Discussion | SPC | 37 min |
| Apr 17, 12:51 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 17, 1:18 PM CDT | Flash Flood Warning | CRP | 117 min |
| Apr 17, 3:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Apr 17, 11:23 PM CDT | Severe Thunderstorm Warning | CRP | 52 min |
| Apr 17, 11:44 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Apr 18, 12:04 AM CDT | Severe Thunderstorm Warning | CRP | 56 min |
| Apr 18, 3:22 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Apr 18, 4:21 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 18, 6:07 AM CDT | Severe Thunderstorm Warning | CRP | 29 min |
| Apr 18, 6:32 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Apr 19, 3:13 AM CDT | Dense Fog Advisory | CRP | 7 hr |
| Apr 22, 4:20 AM CDT | Red Flag Warning | CRP | 16 hr |
| Apr 30, 2:41 AM CDT | Severe Thunderstorm Warning | CRP | 49 min |
| Apr 30, 4:14 AM CDT | Wind Advisory | CRP | 5 hr |
| May 25, 5:59 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 2:58 AM CDT | Severe Thunderstorm Warning | CRP | 62 min |
| May 27, 8:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| May 27, 3:56 PM CDT | Mesoscale Discussion | SPC | 64 min |
| May 31, 6:54 PM CDT | Flash Flood Warning | CRP | 3 hr |
| Jun 3, 5:44 PM CDT | Severe Thunderstorm Warning | CRP | 61 min |
| Jun 3, 6:04 PM CDT | Areal Flood Advisory | CRP | 145 days |
| Jun 12, 3:21 AM CDT | Heat Advisory | CRP | 16 hr |
| Jun 13, 3:10 AM CDT | Heat Advisory | CRP | 16 hr |
| Jun 19, 4:34 AM CDT | Heat Advisory | CRP | 4 hr |
| Jun 30, 9:18 PM CDT | Areal Flood Advisory | CRP | 142 days |
| Jul 4, 3:57 AM CDT | Heat Advisory | CRP | 16 hr |
| Jul 9, 3:16 AM CDT | Heat Advisory | CRP | 15 hr |
| Jul 28, 2:06 PM CDT | Red Flag Warning | CRP | 7 hr |
| Sep 11, 10:41 AM CDT | Flash Flood Watch | CRP | 8 hr |
| Sep 11, 1:32 PM CDT | Areal Flood Advisory | CRP | 118 min |
| Sep 11, 1:48 PM CDT | Flash Flood Warning | CRP | 2 hr |
| Oct 3, 4:29 PM CDT | Severe Thunderstorm Warning | CRP | 61 min |
| Oct 4, 6:17 AM CDT | Areal Flood Advisory | CRP | 58 min |
| Oct 4, 7:36 AM CDT | Areal Flood Advisory | CRP | 54 min |
| Oct 22, 1:47 AM CDT | Areal Flood Advisory | CRP | 58 min |
| Oct 22, 2:46 AM CDT | Flash Flood Warning | CRP | 119 min |
| Nov 5, 3:12 AM CST | Dense Fog Advisory | CRP | 7 hr |
| Nov 6, 3:49 AM CST | Dense Fog Advisory | CRP | 5 hr |
| Nov 13, 3:07 AM CST | Dense Fog Advisory | CRP | 6 hr |
| Nov 22, 3:32 AM CST | Dense Fog Advisory | CRP | 4 hr |
| Nov 22, 3:21 PM CST | Dense Fog Advisory | CRP | 18 hr |
| Dec 3, 12:28 PM CST | Freeze Watch | CRP | 16 hr |
| Dec 4, 4:19 AM CST | Freeze Warning | CRP | 30 hr |
| Dec 8, 9:15 PM CST | Dense Fog Advisory | CRP | 9 hr |
| Dec 12, 7:53 PM CST | Dense Fog Advisory | CRP | 13 hr |
| Dec 13, 7:19 PM CST | Dense Fog Advisory | CRP | 14 hr |
| Dec 14, 9:44 PM CST | Dense Fog Advisory | CRP | 8 hr |
| Dec 23, 4:05 PM CST | Wind Advisory | CRP | 26 hr |
| Dec 24, 4:43 AM CST | Wind Advisory | CRP | 13 hr |
| Dec 24, 3:44 PM CST | Freeze Warning | CRP | 16 hr |
| Dec 30, 10:11 PM CST | Dense Fog Advisory | CRP | 14 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 | 8 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 9 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 6 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 14 |
| Fire Weather Watch | 10 |
| Fog and smoke | |
| Dense Fog Advisory | 13 |
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.