Weather alerts in Drew County, Arkansas, 2009

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

Drew County and its neighbors

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

Alerts: 189
Warnings: 61
Watches: 39
Advisories: 36
Busiest month: May44 alerts
Busiest day: May 6, 200916 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 3 tornado warnings covering Drew County in 2009 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 14 minutes after it went out.

Drew County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	1	67%	1	100%	14 min
Severe thunderstorm warnings	37	15	59%	14	100%	25 min
Flash flood warnings	11	5	55%	4	100%	171 min

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Little Rock, AR: tornado warnings	50	8	84%	11	82%	26 min
NWS Little Rock, AR: severe thunderstorm warnings	548	174	68%	413	85%	25 min
NWS Little Rock, AR: flash flood warnings	167	71	57%	138	87%	95 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, 5:01 PM CST	Dense Fog Advisory	LZK	11 hr
Jan 5, 3:35 AM CST	Flash Flood Watch	LZK	23 hr
Jan 27, 3:45 AM CST	Winter Weather Advisory	LZK	26 hr
Feb 6, 3:50 AM CST	Lake Wind Advisory	LZK	14 hr
Feb 7, 3:35 AM CST	Lake Wind Advisory	LZK	14 hr
Feb 8, 2:53 PM CST	Lake Wind Advisory	LZK	27 hr
Feb 10, 3:56 AM CST	Wind Advisory	LZK	38 hr
Feb 11, 12:37 AM CST	Mesoscale Discussion	SPC	53 min
Feb 11, 1:04 AM CST	Tornado Watch	SPC	5 hr
Feb 11, 4:01 AM CST	Mesoscale Discussion	SPC	89 min
Feb 11, 4:09 AM CST	Severe Thunderstorm Warning	LZK	36 min
Feb 17, 5:44 PM CST	Mesoscale Discussion	SPC	3 hr
Feb 17, 7:09 PM CST	Severe Thunderstorm Watch	SPC	6 hr
Feb 17, 9:45 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 18, 2:58 AM CST	Lake Wind Advisory	LZK	13 hr
Feb 26, 3:58 AM CST	Lake Wind Advisory	LZK	14 hr
Feb 26, 9:40 PM CST	Severe Thunderstorm Watch	SPC	5 hr
Feb 26, 10:36 PM CST	Mesoscale Discussion	SPC	114 min
Feb 27, 8:12 AM CST	Severe Thunderstorm Warning	LZK	48 min
Feb 27, 8:29 AM CST	Mesoscale Discussion	SPC	31 min
Feb 27, 8:40 AM CST	Severe Thunderstorm Watch	SPC	6 hr
Feb 27, 9:00 AM CST	Severe Thunderstorm Warning	LZK	30 min
Feb 27, 10:15 AM CST	Mesoscale Discussion	SPC	90 min
Feb 27, 11:24 AM CST	Severe Thunderstorm Warning	LZK	51 min
Feb 27, 12:06 PM CST	Severe Thunderstorm Warning	LZK	39 min
Feb 27, 1:01 PM CST	Severe Thunderstorm Warning	LZK	59 min
Feb 28, 3:23 AM CST	Winter Weather Advisory	LZK	24 hr
Mar 4, 9:27 PM CST	Lake Wind Advisory	LZK	45 hr
Mar 7, 4:30 AM CST	Lake Wind Advisory	LZK	14 hr
Mar 8, 4:30 AM CDT	Lake Wind Advisory	LZK	14 hr
Mar 17, 2:35 AM CDT	Dense Fog Advisory	LZK	8 hr
Mar 23, 3:57 AM CDT	Lake Wind Advisory	LZK	15 hr
Mar 24, 3:43 AM CDT	Lake Wind Advisory	LZK	15 hr
Mar 26, 6:15 AM CDT	Dense Fog Advisory	LZK	3 hr
Mar 27, 5:53 PM CDT	Mesoscale Discussion	SPC	97 min
Mar 27, 6:35 PM CDT	Tornado Watch	SPC	7 hr
Mar 27, 10:24 PM CDT	Mesoscale Discussion	SPC	96 min
Mar 28, 4:18 AM CDT	Lake Wind Advisory	LZK	15 hr
Apr 1, 2:45 PM CDT	Lake Wind Advisory	LZK	34 hr
Apr 2, 8:01 AM CDT	Mesoscale Discussion	SPC	59 min
Apr 2, 9:06 AM CDT	Severe Thunderstorm Warning	LZK	39 min
Apr 2, 11:13 AM CDT	Flash Flood Warning	LZK	2 hr
Apr 2, 3:56 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 3, 2:11 PM CDT	Freeze Watch	LZK	48 hr
Apr 5, 2:49 AM CDT	Lake Wind Advisory	LZK	40 hr
Apr 5, 2:26 PM CDT	Freeze Warning	LZK	43 hr
Apr 9, 3:14 AM CDT	Lake Wind Advisory	LZK	22 hr
Apr 9, 7:21 PM CDT	Tornado Watch	SPC	5 hr
Apr 9, 8:44 PM CDT	Mesoscale Discussion	SPC	61 min
Apr 9, 9:43 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 9, 11:21 PM CDT	Severe Thunderstorm Warning	LZK	39 min
Apr 9, 11:47 PM CDT	Mesoscale Discussion	SPC	58 min
Apr 10, 4:59 AM CDT	Lake Wind Advisory	LZK	14 hr
Apr 12, 7:13 AM CDT	Mesoscale Discussion	SPC	92 min
Apr 12, 7:32 AM CDT	Severe Thunderstorm Warning	LZK	43 min
Apr 12, 7:44 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 12, 8:11 AM CDT	Severe Thunderstorm Warning	LZK	49 min
Apr 12, 8:45 AM CDT	Severe Thunderstorm Warning	LZK	30 min
Apr 12, 11:22 AM CDT	Severe Thunderstorm Warning	LZK	23 min
Apr 12, 11:41 AM CDT	Severe Thunderstorm Warning	LZK	34 min
Apr 12, 12:00 PM CDT	Mesoscale Discussion	SPC	90 min
Apr 19, 2:43 AM CDT	Lake Wind Advisory	LZK	12 hr
Apr 19, 12:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 19, 2:22 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 23, 3:10 AM CDT	Lake Wind Advisory	LZK	16 hr
Apr 24, 3:49 AM CDT	Lake Wind Advisory	LZK	15 hr
Apr 27, 8:03 AM CDT	River Flood Advisory	LZK	23 hr
Apr 27, 2:57 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 27, 7:08 PM CDT	Mesoscale Discussion	SPC	67 min
Apr 28, 5:03 AM CDT	Flash Flood Watch	LZK	10 hr
Apr 30, 3:34 PM CDT	Mesoscale Discussion	SPC	86 min
May 1, 3:33 PM CDT	Flash Flood Watch	LZK	47 hr
May 2, 1:45 AM CDT	Mesoscale Discussion	SPC	90 min
May 2, 9:23 AM CDT	Mesoscale Discussion	SPC	97 min
May 2, 12:17 PM CDT	Tornado Watch	SPC	7 hr
May 2, 3:30 PM CDT	Severe Thunderstorm Warning	LZK	45 min
May 2, 3:47 PM CDT	Mesoscale Discussion	SPC	58 min
May 2, 3:51 PM CDT	Tornado Warning	LZK	39 min
May 2, 4:15 PM CDT	Severe Thunderstorm Warning	LZK	60 min
May 2, 5:25 PM CDT	Mesoscale Discussion	SPC	95 min
May 2, 6:03 PM CDT	Tornado Watch	SPC	6 hr
May 2, 7:21 PM CDT	Flash Flood Warning	LZK	6 hr
May 2, 7:38 PM CDT	Mesoscale Discussion	SPC	97 min
May 2, 10:40 PM CDT	Mesoscale Discussion	SPC	2 hr
May 3, 1:20 AM CDT	Flash Flood Warning	LZK	4 hr
May 3, 2:39 AM CDT	Mesoscale Discussion	SPC	2 hr
May 3, 5:16 AM CDT	Flash Flood Warning	LZK	4 hr
May 3, 9:35 AM CDT	Flash Flood Warning	LZK	5 hr
May 5, 4:10 AM CDT	Flash Flood Watch	LZK	33 hr
May 5, 10:07 PM CDT	Mesoscale Discussion	SPC	83 min
May 5, 10:27 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 6, 12:17 AM CDT	Severe Thunderstorm Warning	LZK	58 min
May 6, 12:53 AM CDT	Mesoscale Discussion	SPC	37 min
May 6, 12:54 AM CDT	Tornado Watch	SPC	5 hr
May 6, 3:05 AM CDT	Mesoscale Discussion	SPC	115 min
May 6, 4:07 AM CDT	Severe Thunderstorm Warning	LZK	53 min
May 6, 4:19 AM CDT	Severe Thunderstorm Warning	LZK	56 min
May 6, 4:46 AM CDT	Tornado Warning	LZK	44 min
May 6, 5:00 AM CDT	Severe Thunderstorm Warning	LZK	48 min
May 6, 5:20 AM CDT	Severe Thunderstorm Warning	LZK	25 min
May 6, 5:45 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 6, 6:58 AM CDT	Mesoscale Discussion	SPC	3 hr
May 6, 7:00 AM CDT	Flash Flood Warning	LZK	5 hr
May 6, 10:08 AM CDT	River Flood Warning	LZK	9 days
May 6, 12:01 PM CDT	Areal Flood Warning	LZK	3 hr
May 7, 5:03 AM CDT	Dense Fog Advisory	LZK	5 hr
May 8, 3:53 AM CDT	Flash Flood Watch	LZK	4 days
May 8, 10:59 AM CDT	Lake Wind Advisory	LZK	7 hr
May 9, 12:33 PM CDT	Mesoscale Discussion	SPC	57 min
May 9, 12:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 9, 3:25 PM CDT	Mesoscale Discussion	SPC	65 min
May 10, 11:17 AM CDT	Mesoscale Discussion	SPC	118 min
May 13, 3:23 AM CDT	Lake Wind Advisory	LZK	16 hr
May 27, 2:48 PM CDT	Severe Thunderstorm Warning	LZK	42 min
May 27, 3:20 PM CDT	Severe Thunderstorm Warning	LZK	26 min
Jun 3, 6:12 PM CDT	Severe Thunderstorm Warning	LZK	48 min
Jun 3, 6:59 PM CDT	Severe Thunderstorm Warning	LZK	46 min
Jun 3, 7:11 PM CDT	Flash Flood Warning	LZK	3 hr
Jun 10, 6:37 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 10, 11:07 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 11, 12:41 AM CDT	Severe Thunderstorm Warning	LZK	49 min
Jun 11, 1:26 AM CDT	Severe Thunderstorm Warning	LZK	64 min
Jun 11, 1:40 AM CDT	Mesoscale Discussion	SPC	35 min
Jun 12, 11:35 AM CDT	Severe Thunderstorm Watch PDS	SPC	9 hr
Jun 12, 1:30 PM CDT	Mesoscale Discussion	SPC	90 min
Jun 12, 3:22 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 12, 5:24 PM CDT	Mesoscale Discussion	SPC	96 min
Jun 12, 11:10 PM CDT	Mesoscale Discussion	SPC	65 min
Jun 12, 11:53 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 13, 3:25 AM CDT	Mesoscale Discussion	SPC	65 min
Jun 13, 5:07 PM CDT	Mesoscale Discussion	SPC	53 min
Jun 13, 5:52 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 23, 3:46 PM CDT	Severe Thunderstorm Warning	LZK	26 min
Jun 24, 3:44 AM CDT	Heat Advisory	LZK	15 hr
Jun 26, 3:18 AM CDT	Heat Advisory	LZK	40 hr
Jun 30, 1:54 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 30, 3:47 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 30, 6:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 30, 6:30 PM CDT	Severe Thunderstorm Warning	LZK	45 min
Jun 30, 7:22 PM CDT	Severe Thunderstorm Warning	LZK	38 min
Jun 30, 8:12 PM CDT	Mesoscale Discussion	SPC	63 min
Jun 30, 8:25 PM CDT	Severe Thunderstorm Warning	LZK	50 min
Jun 30, 9:11 PM CDT	Severe Thunderstorm Warning	LZK	21 min
Jul 12, 3:43 AM CDT	Heat Advisory	LZK	4 days
Jul 16, 4:00 AM CDT	Heat Advisory	LZK	14 hr
Jul 16, 2:19 PM CDT	Mesoscale Discussion	SPC	56 min
Jul 16, 3:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 16, 6:32 PM CDT	Mesoscale Discussion	SPC	88 min
Jul 16, 7:24 PM CDT	Severe Thunderstorm Warning	LZK	66 min
Jul 16, 8:03 PM CDT	Severe Thunderstorm Warning	LZK	57 min
Jul 27, 2:48 PM CDT	Flash Flood Watch	LZK	20 hr
Jul 29, 4:48 AM CDT	Flash Flood Watch	LZK	38 hr
Aug 1, 10:35 AM CDT	Flash Flood Watch	LZK	8 hr
Sep 15, 3:44 AM CDT	Flash Flood Watch	LZK	3 days
Oct 1, 8:37 PM CDT	Mesoscale Discussion	SPC	83 min
Oct 1, 9:28 PM CDT	Mesoscale Discussion	SPC	92 min
Oct 7, 4:57 AM CDT	Flash Flood Watch	LZK	56 hr
Oct 9, 6:59 AM CDT	Mesoscale Discussion	SPC	3 hr
Oct 9, 8:24 AM CDT	Mesoscale Discussion	SPC	66 min
Oct 9, 8:36 AM CDT	Tornado Watch	SPC	4 hr
Oct 9, 9:42 AM CDT	Severe Thunderstorm Warning	LZK	63 min
Oct 9, 10:26 AM CDT	Severe Thunderstorm Warning	LZK	64 min
Oct 12, 10:19 PM CDT	Dense Fog Advisory	LZK	11 hr
Oct 13, 9:46 AM CDT	Flash Flood Warning	LZK	11 hr
Oct 13, 10:22 AM CDT	Flash Flood Watch	LZK	9 hr
Oct 13, 12:19 PM CDT	Mesoscale Discussion	SPC	116 min
Oct 13, 7:04 PM CDT	Flash Flood Watch	LZK	3 hr
Oct 16, 9:50 AM CDT	River Flood Warning	LZK	24 hr
Oct 21, 2:51 PM CDT	Flash Flood Watch	LZK	30 hr
Oct 22, 11:09 AM CDT	River Flood Warning	LZK	10 hr
Oct 28, 4:06 AM CDT	Flash Flood Watch	LZK	59 hr
Oct 29, 9:27 AM CDT	River Flood Warning	LZK	8 days
Oct 29, 10:30 PM CDT	Mesoscale Discussion	SPC	60 min
Oct 29, 10:54 PM CDT	Severe Thunderstorm Warning	LZK	51 min
Oct 29, 11:08 PM CDT	Flash Flood Warning	LZK	7 hr
Oct 30, 12:16 AM CDT	Flash Flood Warning	LZK	6 hr
Oct 30, 6:05 AM CDT	Areal Flood Warning	LZK	12 hr
Nov 29, 5:30 PM CST	Mesoscale Discussion	SPC	90 min
Dec 8, 4:09 AM CST	Lake Wind Advisory	LZK	36 hr
Dec 8, 9:43 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 13, 12:02 AM CST	Dense Fog Advisory	LZK	10 hr
Dec 22, 3:21 PM CST	Flash Flood Watch	LZK	49 hr
Dec 23, 3:20 AM CST	Lake Wind Advisory	LZK	60 hr
Dec 24, 8:28 AM CST	Severe Thunderstorm Warning	LZK	47 min
Dec 24, 8:38 AM CST	Tornado Warning	LZK	37 min
Dec 24, 9:10 AM CST	River Flood Warning	LZK	11 days
Dec 24, 9:49 AM CST	Flash Flood Warning	LZK	4 hr
Dec 24, 2:05 PM CST	Areal Flood Warning	LZK	4 hr
Dec 24, 6:06 PM CST	Areal Flood Warning	LZK	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	37
Tornado Warning	3
Severe Thunderstorm Watch	16
Tornado Watch	7
Mesoscale Discussion	53
Flooding
Areal Flood Warning	4
Flash Flood Warning	11
River Flood Warning	5
Flash Flood Watch	15
River Flood Advisory	1
Winter
Winter Weather Advisory	2
Heat
Heat Advisory	4
Cold
Freeze Warning	1
Freeze Watch	1
Wind and dust
Lake Wind Advisory	22
Wind Advisory	1
Fog and smoke
Dense Fog Advisory	6

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.