Alert archive / Texas / Galveston County

Weather alerts in Galveston County, Texas, 2015

240 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Galveston County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts: 240
Warnings: 67
Watches: 25
Advisories: 99
Busiest month: May48 alerts
Busiest day: October 31, 201514 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

3 of 9 tornado warnings covering Galveston County in 2015 had a tornado report inside them; 3 of 4 tornado reports fell inside a warning, on average 22 minutes after it went out.

Galveston County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	9	3	67%	4	75%	22 min
Severe thunderstorm warnings	18	6	67%	6	50%	35 min
Flash flood warnings	28	18	36%	20	85%	64 min

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Houston/Galveston, TX: tornado warnings	52	10	81%	43	33%	14 min
NWS Houston/Galveston, TX: severe thunderstorm warnings	154	69	55%	203	69%	19 min
NWS Houston/Galveston, TX: flash flood warnings	138	73	47%	207	78%	65 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, 8:58 AM CST	Dense Fog Advisory	HGX	18 hr
Jan 7, 3:58 AM CST	Wind Advisory	HGX	57 days
Jan 11, 9:00 PM CST	Dense Fog Advisory	HGX	8 hr
Jan 12, 6:03 AM CST	Dense Fog Advisory	HGX	4 hr
Jan 19, 10:19 PM CST	Dense Fog Advisory	HGX	12 hr
Jan 20, 10:08 AM CST	Dense Fog Advisory	HGX	112 min
Jan 20, 6:06 PM CST	Dense Fog Advisory	HGX	15 hr
Jan 21, 5:28 PM CST	Dense Fog Advisory	HGX	3 hr
Jan 22, 4:06 AM CST	Wind Advisory	HGX	24 hr
Jan 22, 12:15 PM CST	Areal Flood Advisory	HGX	2 hr
Jan 22, 1:00 PM CST	Flash Flood Warning	HGX	2 hr
Jan 22, 1:48 PM CST	Areal Flood Advisory	HGX	117 min
Jan 28, 9:53 PM CST	Dense Fog Advisory	HGX	12 hr
Feb 1, 8:24 PM CST	Wind Advisory	HGX	7 hr
Feb 2, 3:18 AM CST	Wind Advisory	HGX	5 hr
Feb 8, 11:44 PM CST	Dense Fog Advisory	HGX	9 hr
Feb 11, 12:48 AM CST	Dense Fog Advisory	HGX	9 hr
Feb 12, 12:18 AM CST	Dense Fog Advisory	HGX	6 hr
Feb 14, 11:36 PM CST	Dense Fog Advisory	HGX	9 hr
Feb 16, 10:10 AM CST	Wind Advisory	HGX	12 hr
Mar 1, 10:46 AM CST	Dense Fog Advisory	HGX	13 hr
Mar 2, 6:26 PM CST	Dense Fog Advisory	HGX	16 hr
Mar 4, 10:52 AM CST	Wind Advisory	HGX	25 hr
Mar 14, 5:32 AM CDT	Dense Fog Advisory	HGX	3 hr
Mar 17, 6:16 AM CDT	Dense Fog Advisory	HGX	4 hr
Mar 18, 3:14 AM CDT	Dense Fog Advisory	HGX	3 hr
Mar 21, 8:27 AM CDT	Areal Flood Advisory	HGX	63 min
Mar 21, 9:34 AM CDT	Areal Flood Advisory	HGX	116 min
Mar 21, 2:09 PM CDT	Areal Flood Advisory	HGX	2 hr
Mar 21, 3:05 PM CDT	Flash Flood Warning	HGX	3 hr
Mar 26, 8:42 AM CDT	Special Weather Statement	HGX	48 min
Apr 12, 5:53 PM CDT	Areal Flood Advisory	HGX	52 min
Apr 12, 6:30 PM CDT	Flash Flood Warning	HGX	3 hr
Apr 14, 9:27 AM CDT	Areal Flood Advisory	HGX	2 hr
Apr 14, 9:41 AM CDT	Special Weather Statement	HGX	49 min
Apr 16, 2:22 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 16, 3:19 PM CDT	Flash Flood Watch	HGX	41 hr
Apr 16, 6:19 PM CDT	Mesoscale Discussion	SPC	86 min
Apr 16, 8:20 PM CDT	Mesoscale Discussion	SPC	85 min
Apr 16, 8:36 PM CDT	Tornado Watch	SPC	3 hr
Apr 16, 11:33 PM CDT	Mesoscale Discussion	SPC	87 min
Apr 17, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 17, 6:56 PM CDT	Severe Thunderstorm Warning	HGX	49 min
Apr 17, 7:37 PM CDT	Severe Thunderstorm Warning	HGX	38 min
Apr 17, 7:39 PM CDT	Mesoscale Discussion	SPC	96 min
Apr 17, 7:55 PM CDT	Flash Flood Warning	HGX	3 hr
Apr 17, 8:01 PM CDT	Severe Thunderstorm Warning	HGX	44 min
Apr 17, 8:25 PM CDT	Flash Flood Warning	HGX	3 hr
Apr 17, 8:43 PM CDT	Severe Thunderstorm Warning	HGX	47 min
Apr 17, 8:50 PM CDT	Severe Thunderstorm Warning	HGX	40 min
Apr 17, 9:13 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 17, 10:57 PM CDT	Flash Flood Warning	HGX	2 hr
Apr 17, 11:31 PM CDT	Mesoscale Discussion	SPC	59 min
Apr 18, 11:33 AM CDT	River Flood Warning	HGX	46 hr
Apr 18, 5:25 PM CDT	Areal Flood Advisory	HGX	50 min
Apr 18, 6:15 PM CDT	Areal Flood Advisory	HGX	60 min
Apr 19, 1:52 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 19, 2:31 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 19, 6:56 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 19, 8:53 PM CDT	Severe Thunderstorm Warning	HGX	37 min
Apr 25, 7:12 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 25, 7:36 AM CDT	Severe Thunderstorm Warning	HGX	24 min
Apr 25, 8:09 AM CDT	Special Weather Statement	HGX	51 min
Apr 25, 8:13 AM CDT	Severe Thunderstorm Warning	HGX	47 min
Apr 25, 8:23 AM CDT	Severe Thunderstorm Warning	HGX	52 min
Apr 25, 10:18 AM CDT	Severe Thunderstorm Warning	HGX	27 min
Apr 25, 11:22 AM CDT	Special Weather Statement	HGX	38 min
Apr 26, 5:24 PM CDT	Mesoscale Discussion	SPC	96 min
Apr 26, 5:39 PM CDT	Tornado Watch	SPC	2 hr
Apr 26, 6:49 PM CDT	Severe Thunderstorm Warning	HGX	41 min
Apr 26, 7:24 PM CDT	Severe Thunderstorm Warning	HGX	23 min
May 9, 10:35 PM CDT	Rip Current Statement	HGX	19 hr
May 11, 10:52 AM CDT	Flash Flood Watch	HGX	24 hr
May 11, 10:51 PM CDT	Areal Flood Advisory	HGX	114 min
May 12, 1:26 AM CDT	Areal Flood Advisory	HGX	2 hr
May 12, 1:35 AM CDT	Special Weather Statement	HGX	40 min
May 12, 1:40 AM CDT	Tornado Warning	HGX	22 min
May 12, 3:32 PM CDT	Flash Flood Watch	HGX	30 hr
May 12, 4:10 PM CDT	Tornado Warning	HGX	35 min
May 12, 4:53 PM CDT	Areal Flood Advisory	HGX	3 hr
May 12, 5:08 PM CDT	Flash Flood Warning	HGX	3 hr
May 12, 5:47 PM CDT	Areal Flood Advisory	HGX	118 min
May 12, 7:53 PM CDT	Flash Flood Warning	HGX	3 hr
May 12, 8:30 PM CDT	Areal Flood Advisory	HGX	2 hr
May 12, 8:58 PM CDT	Areal Flood Advisory	HGX	3 hr
May 12, 10:25 PM CDT	Flash Flood Warning	HGX	3 hr
May 12, 11:08 PM CDT	Flash Flood Warning	HGX	2 hr
May 12, 11:54 PM CDT	Areal Flood Advisory	HGX	111 min
May 13, 12:14 AM CDT	River Flood Warning	HGX	38 hr
May 13, 12:23 AM CDT	Areal Flood Advisory	HGX	3 hr
May 13, 1:11 AM CDT	Flash Flood Warning	HGX	3 hr
May 13, 2:35 AM CDT	River Flood Warning	HGX	7 days
May 13, 4:15 AM CDT	Flash Flood Warning	HGX	60 min
May 13, 5:15 AM CDT	Flash Flood Warning	HGX	4 hr
May 13, 9:21 AM CDT	Areal Flood Warning	HGX	3 hr
May 15, 6:39 AM CDT	Flash Flood Watch	HGX	12 hr
May 17, 6:51 AM CDT	Rip Current Statement	HGX	24 hr
May 21, 1:52 PM CDT	Areal Flood Advisory	HGX	2 hr
May 23, 4:47 AM CDT	Flash Flood Watch	HGX	32 hr
May 23, 11:03 AM CDT	Rip Current Statement	HGX	58 hr
May 24, 3:56 AM CDT	Wind Advisory	HGX	14 hr
May 24, 6:08 AM CDT	Severe Thunderstorm Warning	HGX	67 min
May 24, 3:01 PM CDT	Flash Flood Watch	HGX	51 hr
May 25, 6:06 PM CDT	Mesoscale Discussion	SPC	54 min
May 25, 6:24 PM CDT	Tornado Watch	SPC	9 hr
May 25, 11:13 PM CDT	Mesoscale Discussion	SPC	92 min
May 25, 11:40 PM CDT	Flash Flood Warning	HGX	3 hr
May 26, 1:41 AM CDT	Severe Thunderstorm Warning	HGX	49 min
May 26, 2:30 AM CDT	Flash Flood Warning Emergency	HGX	3 hr
May 26, 3:58 AM CDT	Severe Thunderstorm Warning	HGX	47 min
May 26, 11:45 AM CDT	Rip Current Statement	HGX	9 hr
May 27, 7:05 AM CDT	Special Weather Statement	HGX	55 min
May 27, 7:16 AM CDT	Areal Flood Advisory	HGX	3 hr
May 29, 4:26 AM CDT	Flash Flood Watch	HGX	4 hr
May 29, 6:53 AM CDT	Areal Flood Advisory	HGX	52 min
May 29, 7:43 AM CDT	Areal Flood Advisory	HGX	62 min
May 29, 3:33 PM CDT	Flash Flood Watch	HGX	30 hr
May 30, 5:16 PM CDT	Areal Flood Advisory	HGX	119 min
May 30, 6:25 PM CDT	Areal Flood Advisory	HGX	110 min
Jun 13, 8:36 AM CDT	Flash Flood Warning	HGX	114 min
Jun 13, 9:20 AM CDT	Areal Flood Advisory	HGX	115 min
Jun 13, 10:27 AM CDT	Flash Flood Warning	HGX	3 hr
Jun 15, 9:57 AM CDT	Flash Flood Watch	HGX	3 days
Jun 15, 10:31 AM CDT	Coastal Flood Advisory	HGX	37 hr
Jun 15, 2:41 PM CDT	Wind Advisory	HGX	21 hr
Jun 15, 10:00 PM CDT	Tropical Storm Warning	NHC	4 days
Jun 15, 10:21 PM CDT	Tropical Storm Warning	HGX	28 hr
Jun 16, 7:48 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 16, 1:01 PM CDT	Tornado Watch	SPC	11 hr
Jun 16, 7:26 PM CDT	Wind Advisory	HGX	9 hr
Jun 16, 10:50 PM CDT	Mesoscale Discussion	SPC	85 min
Jun 17, 1:58 AM CDT	Beach Hazards Statement	HGX	18 hr
Jun 17, 6:21 AM CDT	Areal Flood Advisory	HGX	54 min
Jun 17, 1:44 PM CDT	Areal Flood Advisory	HGX	3 hr
Jun 17, 5:21 PM CDT	Flash Flood Warning	HGX	3 hr
Jun 17, 5:33 PM CDT	Areal Flood Advisory	HGX	3 hr
Jun 17, 6:49 PM CDT	Areal Flood Advisory	HGX	116 min
Jun 19, 2:47 PM CDT	Areal Flood Advisory	HGX	58 min
Jul 31, 3:51 AM CDT	Heat Advisory	HGX	15 hr
Aug 8, 10:06 AM CDT	Heat Advisory	HGX	58 hr
Aug 10, 3:18 PM CDT	Heat Advisory	HGX	30 hr
Aug 11, 6:19 PM CDT	Severe Thunderstorm Warning	HGX	41 min
Aug 11, 6:58 PM CDT	Severe Thunderstorm Warning	HGX	62 min
Aug 12, 3:35 AM CDT	Heat Advisory	HGX	17 hr
Aug 17, 2:02 PM CDT	Special Weather Statement	HGX	28 min
Aug 19, 1:08 PM CDT	Areal Flood Advisory	HGX	3 hr
Aug 19, 1:27 PM CDT	Special Weather Statement	HGX	33 min
Aug 19, 3:48 PM CDT	Special Weather Statement	HGX	42 min
Aug 19, 3:55 PM CDT	Areal Flood Advisory	HGX	2 hr
Aug 20, 7:02 AM CDT	Areal Flood Advisory	HGX	118 min
Aug 20, 7:39 AM CDT	Flash Flood Warning	HGX	3 hr
Aug 20, 7:52 AM CDT	Areal Flood Advisory	HGX	3 hr
Aug 20, 8:26 AM CDT	Flash Flood Warning	HGX	2 hr
Aug 20, 8:56 AM CDT	Flash Flood Warning	HGX	2 hr
Aug 20, 9:21 AM CDT	Flash Flood Watch	HGX	7 hr
Aug 20, 9:38 AM CDT	Flash Flood Warning	HGX	52 min
Aug 20, 10:27 AM CDT	Flash Flood Warning	HGX	93 min
Aug 21, 5:23 AM CDT	Flash Flood Watch	HGX	6 hr
Aug 21, 8:07 AM CDT	Special Weather Statement	HGX	53 min
Aug 21, 8:41 AM CDT	Areal Flood Advisory	HGX	109 min
Aug 21, 6:27 PM CDT	Areal Flood Advisory	HGX	63 min
Aug 25, 1:20 PM CDT	Special Weather Statement	HGX	40 min
Aug 25, 1:47 PM CDT	Severe Thunderstorm Warning	HGX	43 min
Aug 31, 5:03 PM CDT	Areal Flood Advisory	HGX	57 min
Sep 1, 10:07 AM CDT	Special Weather Statement	HGX	23 min
Sep 1, 10:34 AM CDT	Areal Flood Advisory	HGX	116 min
Sep 1, 10:55 AM CDT	Flash Flood Warning	HGX	110 min
Sep 1, 1:03 PM CDT	Areal Flood Advisory	HGX	117 min
Sep 10, 7:25 AM CDT	Special Weather Statement	HGX	50 min
Sep 25, 10:59 PM CDT	Special Weather Statement	HGX	46 min
Sep 27, 4:23 AM CDT	Special Weather Statement	HGX	52 min
Sep 27, 5:11 AM CDT	Special Weather Statement	HGX	49 min
Sep 29, 12:09 PM CDT	Rip Current Statement	HGX	9 hr
Oct 2, 9:25 AM CDT	Rip Current Statement	HGX	15 hr
Oct 14, 12:37 AM CDT	Dense Fog Advisory	HGX	7 hr
Oct 17, 10:34 AM CDT	Rip Current Statement	HGX	35 hr
Oct 20, 10:25 AM CDT	Coastal Flood Advisory	HGX	4 days
Oct 20, 10:25 AM CDT	Rip Current Statement	HGX	9 hr
Oct 23, 9:37 AM CDT	Flash Flood Watch	HGX	49 hr
Oct 23, 11:42 AM CDT	Coastal Flood Watch	HGX	18 hr
Oct 24, 5:13 AM CDT	Coastal Flood Warning	HGX	24 hr
Oct 24, 12:50 PM CDT	Mesoscale Discussion	SPC	2 hr
Oct 24, 1:30 PM CDT	Special Weather Statement	HGX	15 min
Oct 24, 1:50 PM CDT	Tornado Warning	HGX	10 min
Oct 24, 2:04 PM CDT	Special Weather Statement	HGX	41 min
Oct 24, 2:06 PM CDT	Tornado Warning	HGX	24 min
Oct 24, 2:44 PM CDT	Tornado Watch	SPC	7 hr
Oct 24, 3:47 PM CDT	Wind Advisory	HGX	39 hr
Oct 24, 6:14 PM CDT	Mesoscale Discussion	SPC	91 min
Oct 24, 6:24 PM CDT	Areal Flood Advisory	HGX	2 hr
Oct 24, 7:20 PM CDT	Flash Flood Warning	HGX	3 hr
Oct 24, 9:29 PM CDT	Mesoscale Discussion	SPC	61 min
Oct 24, 10:50 PM CDT	Areal Flood Advisory	HGX	3 hr
Oct 25, 1:11 AM CDT	Flash Flood Warning	HGX	3 hr
Oct 25, 4:45 AM CDT	Coastal Flood Advisory	HGX	5 hr
Oct 25, 3:48 PM CDT	Coastal Flood Advisory	HGX	6 hr
Oct 25, 4:42 PM CDT	River Flood Warning	HGX	6 hr
Oct 26, 10:23 AM CDT	Wind Advisory	HGX	4 hr
Oct 30, 4:24 AM CDT	Coastal Flood Advisory	HGX	25 hr
Oct 30, 11:35 AM CDT	Flash Flood Watch	HGX	28 hr
Oct 30, 4:55 PM CDT	Wind Advisory	HGX	2 hr
Oct 31, 2:57 AM CDT	Tornado Watch	SPC	9 hr
Oct 31, 3:01 AM CDT	Tornado Warning	HGX	44 min
Oct 31, 4:45 AM CDT	Tornado Warning	HGX	30 min
Oct 31, 5:07 AM CDT	Tornado Warning	HGX	23 min
Oct 31, 5:18 AM CDT	Tornado Warning	HGX	27 min
Oct 31, 5:35 AM CDT	Tornado Warning	HGX	25 min
Oct 31, 6:44 AM CDT	Coastal Flood Advisory	HGX	3 hr
Oct 31, 8:14 AM CDT	River Flood Warning	HGX	48 hr
Oct 31, 9:55 AM CDT	Flash Flood Warning	HGX	110 min
Oct 31, 10:03 AM CDT	Mesoscale Discussion	SPC	57 min
Oct 31, 12:42 PM CDT	Flash Flood Warning	HGX	2 hr
Oct 31, 12:58 PM CDT	River Flood Warning	HGX	43 hr
Oct 31, 12:58 PM CDT	River Flood Warning	HGX	24 hr
Oct 31, 4:20 PM CDT	River Flood Warning	HGX	24 hr
Nov 6, 9:20 PM CST	Dense Fog Advisory	HGX	6 hr
Nov 7, 9:41 AM CST	Wind Advisory	HGX	20 hr
Nov 17, 8:20 AM CST	Wind Advisory	HGX	5 hr
Nov 17, 1:00 PM CST	Special Weather Statement	HGX	30 min
Nov 20, 3:18 PM CST	Wind Advisory	HGX	44 hr
Nov 21, 6:26 AM CST	Areal Flood Advisory	HGX	64 min
Nov 26, 1:19 PM CST	Coastal Flood Advisory	HGX	15 hr
Nov 27, 11:46 AM CST	Coastal Flood Advisory	HGX	10 hr
Dec 8, 10:34 PM CST	Dense Fog Advisory	HGX	10 hr
Dec 9, 9:03 AM CST	Dense Fog Advisory	HGX	57 min
Dec 9, 11:36 PM CST	Dense Fog Advisory	HGX	9 hr
Dec 12, 3:02 PM CST	Wind Advisory	HGX	18 hr
Dec 13, 7:17 AM CST	Mesoscale Discussion	SPC	88 min
Dec 13, 7:47 AM CST	Beach Hazards Statement	HGX	10 hr
Dec 13, 8:23 AM CST	Areal Flood Advisory	HGX	112 min
Dec 13, 8:56 AM CST	Special Weather Statement	HGX	64 min
Dec 13, 10:19 AM CST	Areal Flood Advisory	HGX	56 min
Dec 21, 9:44 PM CST	Dense Fog Advisory	HGX	12 hr
Dec 23, 11:03 PM CST	Dense Fog Advisory	HGX	10 hr
Dec 25, 6:30 AM CST	Dense Fog Advisory	HGX	3 hr
Dec 26, 5:09 AM CST	Wind Advisory	HGX	15 hr
Dec 26, 6:41 AM CST	Beach Hazards Statement	HGX	35 hr
Dec 26, 10:00 AM CST	Coastal Flood Advisory	HGX	32 hr
Dec 27, 2:50 AM CST	Wind Advisory	HGX	30 hr
Dec 27, 3:19 PM CST	Mesoscale Discussion	SPC	116 min

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	18
Tornado Warning	9
Severe Thunderstorm Watch	5
Tornado Watch	6
Mesoscale Discussion	18
Special Weather Statement	20
Flooding
Areal Flood Warning	1
Flash Flood Warning	28
River Flood Warning	8
Flash Flood Watch	13
Areal Flood Advisory	43
Heat
Heat Advisory	4
Wind and dust
Wind Advisory	18
Fog and smoke
Dense Fog Advisory	25
Tropical
Tropical Storm Warning	2
Coast and beach
Coastal Flood Warning	1
Coastal Flood Watch	1
Coastal Flood Advisory	9
Beach Hazards Statement	3
Rip Current Statement	8

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2014 2016

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.