Weather alerts in La Salle County, Texas, 2012

123 weather alerts in 2012, 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 2012. Tap one for its archive.

Alerts: 123
Warnings: 59
Watches: 16
Advisories: 29
Busiest month: May40 alerts
Busiest day: May 10, 201227 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 6 tornado warnings covering La Salle County in 2012 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 16 minutes after it went out.

La Salle County, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	6	1	83%	1	100%	16 min
Severe thunderstorm warnings	30	3	90%	2	50%	2 min
Flash flood warnings	7	2	71%	1	100%	8 min

Each office's whole area, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Corpus Christi, TX: tornado warnings	63	15	76%	26	73%	17 min
NWS Corpus Christi, TX: severe thunderstorm warnings	169	43	75%	124	70%	24 min
NWS Corpus Christi, TX: flash flood warnings	37	14	62%	25	80%	53 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, 8:33 PM CST	Freeze Warning	CRP	12 hr
Jan 7, 3:03 AM CST	Dense Fog Advisory	CRP	7 hr
Jan 7, 3:48 PM CST	Dense Fog Advisory	CRP	18 hr
Jan 9, 6:03 AM CST	Fire Weather Watch	CRP	22 hr
Jan 12, 4:07 AM CST	Freeze Warning	CRP	29 hr
Jan 13, 2:47 PM CST	Freeze Warning	CRP	18 hr
Jan 20, 5:36 AM CST	Dense Fog Advisory	CRP	5 hr
Jan 21, 2:32 AM CST	Dense Fog Advisory	CRP	7 hr
Jan 24, 10:05 PM CST	Tornado Watch	SPC	5 hr
Jan 24, 11:34 PM CST	Mesoscale Discussion	SPC	56 min
Jan 25, 2:12 AM CST	Mesoscale Discussion	SPC	2 hr
Jan 25, 2:34 AM CST	Red Flag Warning	CRP	39 hr
Jan 25, 3:17 AM CST	Tornado Watch	SPC	11 hr
Jan 31, 5:47 AM CST	Dense Fog Advisory	CRP	3 hr
Jan 31, 9:55 PM CST	Dense Fog Advisory	CRP	12 hr
Feb 1, 3:25 PM CST	Dense Fog Advisory	CRP	19 hr
Feb 17, 11:15 PM CST	Mesoscale Discussion	SPC	90 min
Feb 18, 3:30 AM CST	Wind Advisory	CRP	15 hr
Feb 21, 5:09 AM CST	Dense Fog Advisory	CRP	4 hr
Feb 22, 3:46 AM CST	Fire Weather Watch	CRP	35 hr
Feb 23, 7:08 AM CST	Dense Fog Advisory	CRP	3 hr
Feb 23, 3:12 PM CST	Red Flag Warning	CRP	27 hr
Feb 23, 8:36 PM CST	Wind Advisory	CRP	17 hr
Mar 1, 5:02 AM CST	Dense Fog Advisory	CRP	4 hr
Mar 1, 9:05 AM CST	Dense Fog Advisory	CRP	114 min
Mar 1, 2:38 PM CST	Fire Weather Watch	CRP	13 hr
Mar 2, 4:05 AM CST	Red Flag Warning	CRP	38 hr
Mar 8, 7:32 PM CST	Mesoscale Discussion	SPC	88 min
Mar 8, 8:13 PM CST	Severe Thunderstorm Warning	CRP	62 min
Mar 8, 8:58 PM CST	Severe Thunderstorm Watch	SPC	6 hr
Mar 8, 9:12 PM CST	Severe Thunderstorm Warning	CRP	63 min
Mar 8, 9:52 PM CST	Severe Thunderstorm Warning	CRP	38 min
Mar 8, 11:36 PM CST	Mesoscale Discussion	SPC	54 min
Mar 19, 6:05 PM CDT	Mesoscale Discussion	SPC	85 min
Mar 19, 6:21 PM CDT	Tornado Watch	SPC	7 hr
Mar 19, 6:49 PM CDT	Severe Thunderstorm Warning	CRP	41 min
Mar 19, 11:53 PM CDT	Mesoscale Discussion	SPC	67 min
Mar 20, 12:48 AM CDT	Severe Thunderstorm Watch	SPC	9 hr
Mar 20, 12:49 AM CDT	Severe Thunderstorm Warning	CRP	41 min
Mar 20, 1:32 AM CDT	Severe Thunderstorm Warning	CRP	43 min
Mar 20, 2:17 AM CDT	Severe Thunderstorm Warning	CRP	58 min
Mar 20, 2:26 AM CDT	Areal Flood Advisory	CRP	109 min
Mar 28, 3:51 AM CDT	Severe Thunderstorm Warning	CRP	54 min
Mar 28, 10:52 PM CDT	Severe Thunderstorm Warning	CRP	38 min
Mar 28, 11:00 PM CDT	Flash Flood Warning	CRP	3 hr
Mar 28, 11:30 PM CDT	Severe Thunderstorm Warning	CRP	45 min
Mar 28, 11:37 PM CDT	Severe Thunderstorm Warning	CRP	38 min
Mar 29, 1:28 AM CDT	Severe Thunderstorm Warning	CRP	47 min
Mar 29, 2:17 AM CDT	Flash Flood Warning	CRP	118 min
Apr 14, 4:13 AM CDT	Wind Advisory	CRP	15 hr
May 5, 6:09 PM CDT	Mesoscale Discussion	SPC	66 min
May 7, 7:54 PM CDT	Mesoscale Discussion	SPC	66 min
May 7, 9:07 PM CDT	Severe Thunderstorm Warning	CRP	53 min
May 8, 1:42 AM CDT	Mesoscale Discussion	SPC	93 min
May 8, 10:44 AM CDT	Mesoscale Discussion	SPC	61 min
May 8, 10:58 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 10, 5:27 AM CDT	Mesoscale Discussion	SPC	2 hr
May 10, 5:42 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 10, 5:54 AM CDT	Severe Thunderstorm Warning	CRP	29 min
May 10, 6:54 AM CDT	Tornado Warning	CRP	66 min
May 10, 7:59 AM CDT	Severe Thunderstorm Warning	CRP	61 min
May 10, 9:30 AM CDT	Tornado Warning	CRP	30 min
May 10, 9:51 AM CDT	Mesoscale Discussion	SPC	114 min
May 10, 10:01 AM CDT	Severe Thunderstorm Warning	CRP	29 min
May 10, 10:32 AM CDT	Severe Thunderstorm Warning	CRP	43 min
May 10, 10:37 AM CDT	Flash Flood Warning Emergency	CRP	113 min
May 10, 11:07 AM CDT	Severe Thunderstorm Warning	CRP	53 min
May 10, 11:14 AM CDT	Severe Thunderstorm Warning	CRP	46 min
May 10, 11:40 AM CDT	Tornado Watch	SPC	8 hr
May 10, 11:57 AM CDT	Severe Thunderstorm Warning	CRP	63 min
May 10, 12:35 PM CDT	Tornado Warning	CRP	40 min
May 10, 1:05 PM CDT	Flash Flood Warning	CRP	115 min
May 10, 1:15 PM CDT	Tornado Warning	CRP	45 min
May 10, 1:55 PM CDT	Severe Thunderstorm Warning	CRP	50 min
May 10, 2:07 PM CDT	Mesoscale Discussion	SPC	113 min
May 10, 2:37 PM CDT	Tornado Warning	CRP	38 min
May 10, 3:04 PM CDT	Flash Flood Warning	CRP	3 hr
May 10, 3:05 PM CDT	Flash Flood Watch	CRP	19 hr
May 10, 5:18 PM CDT	Severe Thunderstorm Warning	CRP	57 min
May 10, 5:43 PM CDT	Mesoscale Discussion	SPC	2 hr
May 10, 6:19 PM CDT	Severe Thunderstorm Warning	CRP	41 min
May 10, 6:24 PM CDT	Flash Flood Warning	CRP	111 min
May 10, 6:47 PM CDT	Severe Thunderstorm Warning	CRP	43 min
May 10, 7:12 PM CDT	Severe Thunderstorm Warning	CRP	63 min
May 10, 7:18 PM CDT	Mesoscale Discussion	SPC	57 min
May 10, 7:33 PM CDT	Tornado Warning	CRP	42 min
May 10, 7:50 PM CDT	Tornado Watch	SPC	9 hr
May 10, 7:56 PM CDT	Severe Thunderstorm Warning	CRP	34 min
May 10, 7:59 PM CDT	Flash Flood Warning	CRP	2 hr
May 15, 3:07 PM CDT	Mesoscale Discussion	SPC	113 min
Jun 11, 4:20 AM CDT	Heat Advisory	CRP	16 hr
Jun 26, 4:02 AM CDT	Heat Advisory	CRP	12 hr
Jun 26, 2:02 PM CDT	Mesoscale Discussion	SPC	118 min
Jul 14, 7:16 PM CDT	Severe Thunderstorm Warning	CRP	23 min
Jul 18, 5:58 PM CDT	Areal Flood Advisory	CRP	2 hr
Aug 14, 3:22 PM CDT	Red Flag Warning	CRP	30 hr
Sep 13, 9:53 PM CDT	Areal Flood Advisory	CRP	82 min
Sep 17, 6:21 AM CDT	Dense Fog Advisory	CRP	4 hr
Sep 23, 8:29 PM CDT	Severe Thunderstorm Warning	CRP	31 min
Sep 28, 2:47 PM CDT	Flash Flood Watch	CRP	29 hr
Sep 28, 10:20 PM CDT	Mesoscale Discussion	SPC	85 min
Sep 29, 12:26 AM CDT	Severe Thunderstorm Warning	CRP	49 min
Sep 29, 1:12 AM CDT	Areal Flood Advisory	CRP	48 min
Sep 29, 1:22 AM CDT	Severe Thunderstorm Warning	CRP	53 min
Sep 29, 2:05 AM CDT	Areal Flood Advisory	CRP	55 min
Nov 23, 3:37 PM CST	Areal Flood Advisory	CRP	113 min
Nov 26, 2:01 AM CST	Dense Fog Advisory	CRP	8 hr
Dec 6, 1:05 AM CST	Dense Fog Advisory	CRP	9 hr
Dec 10, 3:46 AM CST	Freeze Warning	CRP	29 hr
Dec 11, 2:29 PM CST	Freeze Warning	CRP	19 hr
Dec 18, 2:09 PM CST	Fire Weather Watch	CRP	25 hr
Dec 19, 12:21 PM CST	Red Flag Warning	CRP	30 hr
Dec 19, 6:02 PM CST	Wind Advisory	CRP	21 hr
Dec 20, 9:54 PM CST	Freeze Warning	CRP	10 hr
Dec 23, 8:34 AM CST	Dense Fog Advisory	CRP	60 min
Dec 23, 2:59 PM CST	Fire Weather Watch	CRP	13 hr
Dec 24, 3:44 AM CST	Red Flag Warning	CRP	44 hr
Dec 25, 3:01 AM CST	Wind Advisory	CRP	15 hr
Dec 25, 2:15 PM CST	Freeze Warning	CRP	19 hr
Dec 25, 2:39 PM CST	Wind Chill Advisory	CRP	18 hr
Dec 26, 3:33 PM CST	Freeze Warning	CRP	16 hr
Dec 28, 10:39 AM CST	Red Flag Warning	CRP	7 hr
Dec 28, 3:22 PM CST	Freeze Warning	CRP	17 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	30
Tornado Warning	6
Severe Thunderstorm Watch	4
Tornado Watch	5
Mesoscale Discussion	19
Flooding
Flash Flood Warning	7
Flash Flood Watch	2
Areal Flood Advisory	6
Heat
Heat Advisory	2
Cold
Freeze Warning	9
Wind Chill Advisory	1
Wind and dust
Wind Advisory	5
Fire
Red Flag Warning	7
Fire Weather Watch	5
Fog and smoke
Dense Fog Advisory	15

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2011 2013

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.