Weather alerts in Aransas County, Texas, 2009

113 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Aransas County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts: 113
Warnings: 42
Watches: 13
Advisories: 46
Busiest month: April17 alerts
Busiest day: November 20, 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.

1 of 4 tornado warnings covering Aransas County in 2009 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 3 minutes after it went out.

Aransas County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	4	1	75%	2	100%	3 min
Severe thunderstorm warnings	14	2	86%	2	100%	14 min
Flash flood warnings	6	0	100%	1	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 2, 1:42 AM CST	Dense Fog Advisory	CRP	7 hr
Jan 4, 3:43 AM CST	Dense Fog Advisory	CRP	6 hr
Jan 4, 10:08 AM CST	Dense Fog Advisory	CRP	112 min
Jan 9, 7:39 PM CST	Dense Fog Advisory	CRP	13 hr
Jan 13, 9:55 AM CST	Red Flag Warning	CRP	4 hr
Jan 13, 2:56 PM CST	Freeze Warning	CRP	18 hr
Jan 18, 3:19 AM CST	Dense Fog Advisory	CRP	6 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, 3:00 PM CST	Red Flag Warning	CRP	27 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 10, 9:57 PM CST	Severe Thunderstorm Watch	SPC	5 hr
Feb 18, 10:33 PM CST	Dense Fog Advisory	CRP	4 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
Feb 28, 1:16 PM CST	Wind Advisory	CRP	5 hr
Mar 1, 3:30 AM CST	Red Flag Warning	CRP	9 hr
Mar 16, 9:49 PM CDT	Dense Fog Advisory	CRP	12 hr
Mar 17, 7:48 PM CDT	Dense Fog Advisory	CRP	14 hr
Mar 18, 8:51 PM CDT	Dense Fog Advisory	CRP	13 hr
Mar 20, 2:09 AM CDT	Dense Fog Advisory	CRP	8 hr
Mar 20, 8:58 PM CDT	Dense Fog Advisory	CRP	13 hr
Mar 23, 4:29 AM CDT	Wind Advisory	CRP	16 hr
Mar 26, 6:02 AM CDT	Fire Weather Watch	CRP	33 hr
Mar 26, 12:43 PM CDT	Mesoscale Discussion	SPC	62 min
Mar 26, 12:57 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Mar 26, 3:23 PM CDT	Tornado Warning	CRP	22 min
Mar 26, 3:40 PM CDT	Tornado Warning	CRP	50 min
Mar 26, 3:51 PM CDT	Mesoscale Discussion	SPC	54 min
Mar 27, 5:02 AM CDT	Red Flag Warning	CRP	35 hr
Mar 27, 3:19 PM CDT	Wind Advisory	CRP	6 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 6, 9:53 AM CDT	Red Flag Warning	CRP	5 hr
Apr 17, 3:19 PM CDT	Mesoscale Discussion	SPC	56 min
Apr 17, 3:44 PM CDT	Tornado Watch	SPC	6 hr
Apr 17, 6:50 PM CDT	Mesoscale Discussion	SPC	85 min
Apr 18, 4:21 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 18, 10:52 AM CDT	Mesoscale Discussion	SPC	53 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 27, 3:50 PM CDT	Mesoscale Discussion	SPC	85 min
Apr 27, 6:04 PM CDT	Severe Thunderstorm Warning	CRP	56 min
Apr 27, 6:30 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 27, 6:52 PM CDT	Severe Thunderstorm Warning	CRP	38 min
Apr 27, 7:23 PM CDT	Severe Thunderstorm Warning	CRP	29 min
Apr 30, 4:14 AM CDT	Wind Advisory	CRP	5 hr
May 8, 1:14 PM CDT	Wind Advisory	CRP	5 hr
May 24, 6:55 PM CDT	Severe Thunderstorm Warning	CRP	65 min
May 24, 8:08 PM CDT	Severe Thunderstorm Warning	CRP	26 min
May 27, 8:38 AM CDT	Mesoscale Discussion	SPC	97 min
May 27, 11:07 AM CDT	Severe Thunderstorm Warning	CRP	53 min
May 27, 11:26 AM CDT	Flash Flood Warning	CRP	2 hr
May 27, 11:44 AM CDT	Severe Thunderstorm Warning	CRP	61 min
Jun 3, 2:30 PM CDT	Severe Thunderstorm Warning	CRP	30 min
Jun 3, 2:59 PM CDT	Severe Thunderstorm Warning	CRP	61 min
Jun 3, 3:43 PM CDT	Tornado Warning	CRP	26 min
Jun 3, 6:04 PM CDT	Areal Flood Advisory	CRP	145 days
Jun 30, 9:18 PM CDT	Areal Flood Advisory	CRP	142 days
Jul 4, 3:57 AM CDT	Heat Advisory	CRP	16 hr
Jul 5, 9:18 AM CDT	Red Flag Warning	CRP	9 hr
Jul 8, 3:15 AM CDT	Heat Advisory	CRP	16 hr
Jul 9, 3:16 AM CDT	Heat Advisory	CRP	15 hr
Jul 21, 9:55 AM CDT	Red Flag Warning	CRP	9 hr
Aug 29, 6:54 PM CDT	Areal Flood Advisory	CRP	83 days
Aug 30, 3:56 PM CDT	Tornado Warning	CRP	64 min
Sep 4, 5:58 PM CDT	Areal Flood Advisory	CRP	77 days
Sep 9, 12:31 PM CDT	Areal Flood Advisory	CRP	76 days
Sep 11, 10:41 AM CDT	Flash Flood Watch	CRP	8 hr
Sep 11, 5:15 PM CDT	Areal Flood Advisory	CRP	2 hr
Oct 3, 11:03 PM CDT	Flash Flood Warning	CRP	42 min
Oct 3, 11:58 PM CDT	Flash Flood Warning	CRP	53 min
Oct 4, 10:08 AM CDT	Flash Flood Warning	CRP	69 min
Oct 7, 8:31 PM CDT	Wind Advisory	CRP	23 hr
Oct 22, 2:25 AM CDT	Coastal Flood Statement	CRP	5 hr
Oct 25, 1:42 PM CDT	Severe Thunderstorm Warning	CRP	33 min
Oct 26, 12:38 PM CDT	Severe Thunderstorm Warning	CRP	52 min
Nov 5, 3:11 PM CST	Coastal Flood Statement	CRP	71 hr
Nov 6, 3:49 AM CST	Dense Fog Advisory	CRP	5 hr
Nov 6, 10:20 PM CST	Dense Fog Advisory	CRP	11 hr
Nov 8, 1:51 PM CST	Coastal Flood Advisory	CRP	58 hr
Nov 19, 3:00 PM CST	Flash Flood Watch	CRP	27 hr
Nov 19, 7:28 PM CST	Mesoscale Discussion	SPC	92 min
Nov 19, 8:36 PM CST	Severe Thunderstorm Warning	CRP	54 min
Nov 19, 9:08 PM CST	Severe Thunderstorm Warning	CRP	67 min
Nov 19, 9:50 PM CST	Severe Thunderstorm Warning	CRP	55 min
Nov 20, 5:07 AM CST	Flash Flood Warning	CRP	113 min
Nov 20, 7:01 AM CST	Areal Flood Warning	CRP	3 hr
Nov 20, 2:54 PM CST	Flash Flood Warning	CRP	3 hr
Nov 20, 10:14 PM CST	Coastal Flood Advisory	CRP	14 hr
Nov 22, 3:32 AM CST	Dense Fog Advisory	CRP	4 hr
Nov 30, 4:36 PM CST	Coastal Flood Advisory	CRP	31 hr
Dec 3, 12:28 PM CST	Freeze Watch	CRP	16 hr
Dec 4, 4:19 AM CST	Freeze Warning	CRP	30 hr
Dec 4, 9:47 AM CST	Winter Storm Warning	CRP	5 hr
Dec 6, 7:03 PM CST	Dense Fog Advisory	CRP	9 hr
Dec 8, 11:12 AM CST	Dense Fog Advisory	CRP	48 min
Dec 8, 9:15 PM CST	Dense Fog Advisory	CRP	9 hr
Dec 10, 9:43 PM CST	Coastal Flood Statement	CRP	29 hr
Dec 12, 9:02 AM CST	Dense Fog Advisory	CRP	118 min
Dec 12, 3:43 PM CST	Coastal Flood Advisory	CRP	12 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, 9:13 AM CST	Dense Fog Advisory	CRP	107 min
Dec 14, 9:44 PM CST	Dense Fog Advisory	CRP	8 hr
Dec 23, 4:05 PM CST	Wind Advisory	CRP	26 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	14
Tornado Warning	4
Severe Thunderstorm Watch	3
Tornado Watch	1
Mesoscale Discussion	9
Flooding
Areal Flood Warning	1
Flash Flood Warning	6
Flash Flood Watch	2
Areal Flood Advisory	6
Winter
Winter Storm Warning	1
Heat
Heat Advisory	3
Cold
Freeze Warning	2
Freeze Watch	1
Wind and dust
Wind Advisory	9
Fire
Red Flag Warning	14
Fire Weather Watch	6
Fog and smoke
Dense Fog Advisory	24
Coast and beach
Coastal Flood Advisory	4
Coastal Flood Statement	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2008 2010

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.