Alert archive / Arkansas / Jefferson County

Weather alerts in Jefferson County, Arkansas, 2013

162 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Jefferson County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts: 162
Warnings: 47
Watches: 21
Advisories: 43
Busiest month: April26 alerts
Busiest day: December 21, 201312 alerts

Over time

By month

Warning verification

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

0 of 4 tornado warnings covering Jefferson County in 2013 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.

Jefferson County, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	4	0	100%	1	0%
Severe thunderstorm warnings	28	6	79%	5	40%	19 min
Flash flood warnings	10	6	40%	2	50%	182 min

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Little Rock, AR: tornado warnings	49	10	80%	17	88%	17 min
NWS Little Rock, AR: severe thunderstorm warnings	442	136	69%	222	83%	18 min
NWS Little Rock, AR: flash flood warnings	106	47	56%	86	95%	92 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 3, 6:25 AM CST	Freezing Fog Advisory	LZK	3 hr
Jan 11, 2:29 PM CST	Flash Flood Watch	LZK	37 hr
Jan 12, 5:20 PM CST	Tornado Watch	SPC	7 hr
Jan 12, 6:18 PM CST	Mesoscale Discussion	SPC	117 min
Jan 12, 9:25 PM CST	Mesoscale Discussion	SPC	2 hr
Jan 12, 11:29 PM CST	Tornado Watch	SPC	5 hr
Jan 13, 12:33 AM CST	Flash Flood Warning	LZK	3 hr
Jan 13, 7:01 AM CST	Flash Flood Warning	LZK	3 hr
Jan 13, 9:55 AM CST	Flash Flood Warning	LZK	2 hr
Jan 13, 11:59 AM CST	Areal Flood Warning	LZK	3 hr
Jan 14, 3:17 PM CST	Winter Weather Advisory	LZK	27 hr
Jan 28, 8:58 PM CST	Lake Wind Advisory	LZK	28 hr
Jan 29, 4:04 AM CST	Wind Advisory	LZK	21 hr
Jan 29, 4:58 PM CST	Mesoscale Discussion	SPC	92 min
Jan 29, 5:37 PM CST	Tornado Watch	SPC	8 hr
Jan 29, 7:19 PM CST	Tornado Warning	LZK	26 min
Jan 29, 7:41 PM CST	Tornado Warning	LZK	34 min
Jan 29, 8:09 PM CST	Tornado Warning	LZK	51 min
Jan 29, 8:11 PM CST	Mesoscale Discussion	SPC	94 min
Jan 29, 8:41 PM CST	Tornado Warning	LZK	34 min
Jan 29, 9:51 PM CST	Flash Flood Warning	LZK	3 hr
Jan 29, 10:17 PM CST	Special Weather Statement	LZK	63 min
Jan 30, 12:34 AM CST	Wind Advisory	LZK	17 hr
Feb 5, 3:35 AM CST	Dense Fog Advisory	LZK	8 hr
Feb 5, 10:04 PM CST	Dense Fog Advisory	LZK	14 hr
Feb 10, 4:14 AM CST	Lake Wind Advisory	LZK	14 hr
Feb 17, 2:07 PM CST	Lake Wind Advisory	LZK	33 hr
Feb 18, 2:19 PM CST	Severe Thunderstorm Watch	SPC	7 hr
Feb 18, 4:54 PM CST	Mesoscale Discussion	SPC	66 min
Feb 18, 5:30 PM CST	Special Weather Statement	LZK	45 min
Feb 18, 5:59 PM CST	Mesoscale Discussion	SPC	91 min
Feb 18, 6:01 PM CST	Severe Thunderstorm Warning	LZK	44 min
Feb 18, 6:14 PM CST	Severe Thunderstorm Warning	LZK	31 min
Feb 18, 6:36 PM CST	Severe Thunderstorm Warning	LZK	39 min
Feb 18, 6:39 PM CST	Severe Thunderstorm Warning	LZK	51 min
Feb 18, 7:13 PM CST	Severe Thunderstorm Warning	LZK	47 min
Feb 21, 7:51 AM CST	Special Weather Statement	LZK	44 min
Feb 21, 7:58 AM CST	Severe Thunderstorm Warning	LZK	47 min
Feb 21, 10:21 PM CST	Dense Fog Advisory	LZK	10 hr
Feb 25, 3:10 AM CST	Wind Advisory	LZK	38 hr
Feb 25, 12:56 PM CST	Severe Thunderstorm Watch	SPC	5 hr
Feb 25, 3:37 PM CST	Mesoscale Discussion	SPC	83 min
Mar 4, 4:13 AM CST	Lake Wind Advisory	LZK	14 hr
Mar 4, 5:59 PM CST	Lake Wind Advisory	LZK	9 hr
Mar 5, 3:11 AM CST	Wind Advisory	LZK	17 hr
Mar 14, 1:14 PM CDT	Lake Wind Advisory	LZK	30 hr
Mar 17, 10:58 PM CDT	Mesoscale Discussion	SPC	3 hr
Mar 18, 7:24 AM CDT	Mesoscale Discussion	SPC	3 hr
Mar 18, 7:35 AM CDT	Special Weather Statement	LZK	30 min
Mar 18, 10:27 AM CDT	Special Weather Statement	LZK	33 min
Mar 22, 8:16 PM CDT	Mesoscale Discussion	SPC	119 min
Mar 23, 1:23 AM CDT	Special Weather Statement	LZK	32 min
Mar 23, 2:51 PM CDT	Wind Advisory	LZK	30 hr
Mar 24, 8:41 PM CDT	Lake Wind Advisory	LZK	23 hr
Mar 31, 3:11 AM CDT	Special Weather Statement	LZK	44 min
Mar 31, 3:40 AM CDT	Special Weather Statement	LZK	60 min
Apr 1, 2:10 AM CDT	Dense Fog Advisory	LZK	7 hr
Apr 3, 4:15 AM CDT	Lake Wind Advisory	LZK	14 hr
Apr 6, 4:18 AM CDT	Lake Wind Advisory	LZK	15 hr
Apr 8, 2:52 PM CDT	Lake Wind Advisory	LZK	28 hr
Apr 9, 7:52 PM CDT	Lake Wind Advisory	LZK	28 hr
Apr 10, 1:03 PM CDT	Mesoscale Discussion	SPC	117 min
Apr 10, 1:20 PM CDT	Tornado Watch	SPC	10 hr
Apr 10, 3:01 PM CDT	Mesoscale Discussion	SPC	119 min
Apr 10, 6:09 PM CDT	Mesoscale Discussion	SPC	96 min
Apr 10, 6:29 PM CDT	Severe Thunderstorm Warning	LZK	46 min
Apr 10, 6:31 PM CDT	Severe Thunderstorm Warning	LZK	44 min
Apr 10, 7:07 PM CDT	Special Weather Statement	LZK	43 min
Apr 10, 7:44 PM CDT	Special Weather Statement	LZK	46 min
Apr 17, 2:42 PM CDT	Lake Wind Advisory	LZK	29 hr
Apr 18, 9:25 AM CDT	Tornado Watch	SPC	8 hr
Apr 18, 12:48 PM CDT	Mesoscale Discussion	SPC	87 min
Apr 18, 1:32 PM CDT	Special Weather Statement	LZK	43 min
Apr 18, 2:11 PM CDT	Special Weather Statement	LZK	29 min
Apr 18, 2:27 PM CDT	Frost Advisory	LZK	36 hr
Apr 19, 10:51 AM CDT	Lake Wind Advisory	LZK	8 hr
Apr 26, 12:24 PM CDT	Special Weather Statement	LZK	31 min
Apr 27, 1:55 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 27, 3:47 PM CDT	Tornado Watch	SPC	10 hr
Apr 27, 6:57 PM CDT	Severe Thunderstorm Warning	LZK	33 min
Apr 27, 7:19 PM CDT	Severe Thunderstorm Warning	LZK	26 min
Apr 27, 7:43 PM CDT	Severe Thunderstorm Warning	LZK	47 min
May 9, 9:57 PM CDT	Special Weather Statement	LZK	43 min
May 10, 4:01 PM CDT	Special Weather Statement	LZK	29 min
May 10, 4:47 PM CDT	Severe Thunderstorm Warning	LZK	28 min
May 10, 5:33 PM CDT	Mesoscale Discussion	SPC	117 min
May 20, 2:13 PM CDT	Flash Flood Watch	LZK	31 hr
May 21, 12:15 AM CDT	Severe Thunderstorm Warning	LZK	45 min
May 21, 1:50 PM CDT	Tornado Watch	SPC	8 hr
May 30, 4:01 PM CDT	Severe Thunderstorm Warning	LZK	44 min
May 30, 4:06 PM CDT	Severe Thunderstorm Warning	LZK	39 min
May 30, 4:55 PM CDT	Severe Thunderstorm Warning	LZK	50 min
May 30, 8:09 PM CDT	Mesoscale Discussion	SPC	66 min
May 30, 8:46 PM CDT	Tornado Watch	SPC	7 hr
May 30, 11:28 PM CDT	Mesoscale Discussion	SPC	2 hr
May 31, 1:57 AM CDT	Mesoscale Discussion	SPC	93 min
Jun 1, 9:53 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 5, 6:12 PM CDT	Mesoscale Discussion	SPC	93 min
Jun 5, 6:45 PM CDT	Severe Thunderstorm Warning	LZK	30 min
Jun 5, 7:12 PM CDT	Severe Thunderstorm Warning	LZK	33 min
Jun 17, 10:19 AM CDT	Mesoscale Discussion	SPC	116 min
Jun 27, 8:43 PM CDT	Severe Thunderstorm Warning	LZK	47 min
Jun 28, 12:34 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 28, 1:30 PM CDT	Severe Thunderstorm Warning	LZK	30 min
Jun 28, 2:00 PM CDT	Special Weather Statement	LZK	30 min
Jun 28, 2:04 PM CDT	Severe Thunderstorm Warning	LZK	41 min
Jul 14, 1:28 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 18, 11:48 AM CDT	Mesoscale Discussion	SPC	117 min
Jul 18, 1:27 PM CDT	Special Weather Statement	LZK	28 min
Jul 22, 12:31 PM CDT	Mesoscale Discussion	SPC	89 min
Jul 22, 1:51 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 22, 5:53 PM CDT	Mesoscale Discussion	SPC	67 min
Jul 22, 7:28 PM CDT	Mesoscale Discussion	SPC	62 min
Jul 23, 2:06 PM CDT	Severe Thunderstorm Warning	LZK	39 min
Jul 23, 3:02 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 23, 3:38 PM CDT	Severe Thunderstorm Warning	LZK	52 min
Jul 23, 7:13 PM CDT	Mesoscale Discussion	SPC	92 min
Jul 23, 9:46 PM CDT	Mesoscale Discussion	SPC	59 min
Aug 5, 8:16 PM CDT	Heat Advisory	LZK	4 days
Aug 10, 8:46 PM CDT	Flash Flood Watch	LZK	7 hr
Aug 12, 4:00 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 12, 5:43 PM CDT	Severe Thunderstorm Warning	LZK	32 min
Aug 31, 9:40 AM CDT	Heat Advisory	LZK	9 hr
Oct 2, 2:23 PM CDT	Severe Thunderstorm Warning	LZK	52 min
Oct 2, 4:09 PM CDT	Flash Flood Warning	LZK	111 min
Oct 10, 7:33 AM CDT	Dense Fog Advisory	LZK	2 hr
Oct 11, 5:39 AM CDT	Dense Fog Advisory	LZK	4 hr
Oct 13, 2:06 AM CDT	Dense Fog Advisory	LZK	7 hr
Oct 15, 11:30 AM CDT	Flash Flood Watch	LZK	23 hr
Oct 27, 8:38 PM CDT	Dense Fog Advisory	LZK	14 hr
Oct 29, 3:12 PM CDT	Flash Flood Watch	LZK	44 hr
Oct 31, 4:50 AM CDT	Lake Wind Advisory	LZK	14 hr
Nov 11, 4:15 AM CST	Freeze Warning	LZK	54 hr
Nov 11, 2:29 PM CST	Lake Wind Advisory	LZK	26 hr
Nov 17, 3:55 AM CST	Lake Wind Advisory	LZK	12 hr
Nov 23, 3:15 AM CST	Winter Storm Watch	LZK	35 hr
Nov 24, 2:40 PM CST	Winter Weather Advisory	LZK	23 hr
Dec 2, 9:13 PM CST	Dense Fog Advisory	LZK	14 hr
Dec 3, 4:03 AM CST	Winter Storm Watch	LZK	48 hr
Dec 3, 6:01 PM CST	Dense Fog Advisory	LZK	15 hr
Dec 5, 4:21 AM CST	Ice Storm Warning	LZK	36 hr
Dec 6, 11:31 AM CST	Mesoscale Discussion	SPC	4 hr
Dec 7, 3:00 PM CST	Winter Weather Advisory	LZK	17 hr
Dec 8, 8:06 AM CST	Winter Weather Advisory	LZK	2 hr
Dec 8, 10:35 AM CST	Freezing Fog Advisory	LZK	3 hr
Dec 8, 6:38 PM CST	Freezing Fog Advisory	LZK	10 hr
Dec 9, 2:30 PM CST	Winter Weather Advisory	LZK	10 hr
Dec 19, 3:09 AM CST	Flash Flood Watch	LZK	64 hr
Dec 20, 2:36 PM CST	Lake Wind Advisory	LZK	25 hr
Dec 20, 6:44 PM CST	Mesoscale Discussion	SPC	91 min
Dec 21, 7:11 AM CST	Flash Flood Warning	LZK	3 hr
Dec 21, 9:55 AM CST	Flash Flood Warning	LZK	3 hr
Dec 21, 10:45 AM CST	Mesoscale Discussion	SPC	60 min
Dec 21, 11:40 AM CST	Flash Flood Warning	LZK	4 hr
Dec 21, 11:43 AM CST	Severe Thunderstorm Warning	LZK	47 min
Dec 21, 12:01 PM CST	Tornado Watch	SPC	8 hr
Dec 21, 1:15 PM CST	Flash Flood Warning	LZK	3 hr
Dec 21, 1:57 PM CST	Severe Thunderstorm Warning	LZK	33 min
Dec 21, 3:01 PM CST	Severe Thunderstorm Warning	LZK	29 min
Dec 21, 3:30 PM CST	Areal Flood Warning	LZK	3 hr
Dec 21, 3:38 PM CST	Flash Flood Warning	LZK	3 hr
Dec 21, 6:30 PM CST	Areal Flood Warning	LZK	3 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	28
Tornado Warning	4
Severe Thunderstorm Watch	4
Tornado Watch	9
Mesoscale Discussion	34
Special Weather Statement	17
Flooding
Areal Flood Warning	3
Flash Flood Warning	10
Flash Flood Watch	6
Winter
Ice Storm Warning	1
Winter Storm Watch	2
Winter Weather Advisory	5
Heat
Heat Advisory	2
Cold
Freeze Warning	1
Frost Advisory	1
Wind and dust
Lake Wind Advisory	17
Wind Advisory	5
Fog and smoke
Dense Fog Advisory	10
Freezing Fog Advisory	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 2012 2014

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.