Alert archive / Arkansas / Jefferson County

Weather alerts in Jefferson County, Arkansas, 2010

199 weather alerts in 2010, 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 2010. Tap one for its archive.

Alerts: 199
Warnings: 66
Watches: 28
Advisories: 55
Busiest month: May45 alerts
Busiest day: May 1, 201018 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 16 tornado warnings covering Jefferson County in 2010 had a tornado report inside them.

Jefferson County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	16	1	94%	0
Severe thunderstorm warnings	33	14	58%	5	40%	11 min
Flash flood warnings	7	3	57%	1	100%	101 min

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Little Rock, AR: tornado warnings	87	11	87%	19	79%	25 min
NWS Little Rock, AR: severe thunderstorm warnings	444	173	61%	295	81%	19 min
NWS Little Rock, AR: flash flood warnings	138	47	66%	71	87%	62 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 6, 3:54 AM CST	Winter Weather Advisory	LZK	32 hr
Jan 6, 12:44 PM CST	Lake Wind Advisory	LZK	29 hr
Jan 6, 1:03 PM CST	Wind Chill Advisory	LZK	53 hr
Jan 7, 4:28 PM CST	Hard Freeze Warning	LZK	68 hr
Jan 18, 2:47 AM CST	Dense Fog Advisory	LZK	8 hr
Jan 20, 9:20 PM CST	Mesoscale Discussion	SPC	55 min
Jan 22, 3:54 PM CST	Lake Wind Advisory	LZK	29 hr
Jan 23, 4:03 PM CST	Mesoscale Discussion	SPC	57 min
Jan 24, 4:01 PM CST	Lake Wind Advisory	LZK	26 hr
Jan 28, 4:12 AM CST	Winter Storm Warning	LZK	44 hr
Jan 28, 3:13 PM CST	Winter Storm Watch	LZK	6 hr
Jan 28, 9:13 PM CST	Winter Weather Advisory	LZK	27 hr
Jan 29, 6:31 AM CST	Mesoscale Discussion	SPC	4 hr
Jan 31, 7:58 AM CST	Freezing Fog Advisory	LZK	3 hr
Feb 3, 4:30 AM CST	Freezing Fog Advisory	LZK	5 hr
Feb 8, 10:43 AM CST	Winter Weather Advisory	LZK	18 hr
Feb 11, 3:54 AM CST	Winter Weather Advisory	LZK	29 hr
Feb 14, 3:11 PM CST	Winter Weather Advisory	LZK	7 hr
Feb 15, 3:43 AM CST	Lake Wind Advisory	LZK	13 hr
Mar 9, 11:03 AM CST	Lake Wind Advisory	LZK	9 hr
Mar 10, 3:13 PM CST	Mesoscale Discussion	SPC	92 min
Mar 10, 3:26 PM CST	Tornado Watch	SPC	7 hr
Mar 10, 5:18 PM CST	Mesoscale Discussion	SPC	87 min
Mar 10, 7:48 PM CST	Tornado Watch	SPC	6 hr
Mar 10, 9:03 PM CST	Severe Thunderstorm Warning	LZK	42 min
Mar 10, 10:21 PM CST	Severe Thunderstorm Warning	LZK	54 min
Mar 10, 11:17 PM CST	Severe Thunderstorm Warning	LZK	43 min
Mar 24, 10:17 PM CDT	Lake Wind Advisory	LZK	21 hr
Mar 26, 4:23 PM CDT	Lake Wind Advisory	LZK	27 hr
Mar 27, 4:33 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Mar 27, 7:47 PM CDT	Mesoscale Discussion	SPC	58 min
Mar 27, 7:55 PM CDT	Severe Thunderstorm Warning	LZK	50 min
Mar 27, 8:06 PM CDT	Severe Thunderstorm Warning	LZK	54 min
Mar 27, 8:27 PM CDT	Severe Thunderstorm Warning	LZK	63 min
Mar 27, 8:43 PM CDT	Severe Thunderstorm Warning	LZK	62 min
Mar 30, 11:53 AM CDT	Fire Weather Watch	LZK	31 hr
Mar 31, 4:54 AM CDT	Lake Wind Advisory	LZK	14 hr
Mar 31, 1:49 PM CDT	Fire Weather Watch	LZK	25 hr
Apr 2, 4:36 AM CDT	Lake Wind Advisory	LZK	14 hr
Apr 6, 4:20 AM CDT	Lake Wind Advisory	LZK	15 hr
Apr 7, 12:36 AM CDT	Lake Wind Advisory	LZK	14 hr
Apr 7, 1:29 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 7, 1:55 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 7, 4:45 PM CDT	Severe Thunderstorm Warning	LZK	60 min
Apr 7, 5:26 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 23, 12:08 PM CDT	Mesoscale Discussion	SPC	67 min
Apr 23, 12:51 PM CDT	Tornado Watch	SPC	9 hr
Apr 23, 3:47 PM CDT	Mesoscale Discussion	SPC	58 min
Apr 23, 3:48 PM CDT	Severe Thunderstorm Warning	LZK	42 min
Apr 23, 4:29 PM CDT	Severe Thunderstorm Warning	LZK	46 min
Apr 23, 6:31 PM CDT	Mesoscale Discussion	SPC	29 min
Apr 23, 6:51 PM CDT	Tornado Watch	SPC	8 hr
Apr 23, 9:43 PM CDT	Severe Thunderstorm Warning	LZK	32 min
Apr 23, 10:11 PM CDT	Severe Thunderstorm Warning	LZK	34 min
Apr 23, 11:40 PM CDT	Mesoscale Discussion	SPC	65 min
Apr 24, 2:44 AM CDT	Mesoscale Discussion	SPC	91 min
Apr 24, 3:02 AM CDT	Tornado Watch	SPC	8 hr
Apr 24, 5:15 AM CDT	Flash Flood Watch	LZK	8 hr
Apr 24, 5:26 AM CDT	Lake Wind Advisory	LZK	15 hr
Apr 24, 7:25 AM CDT	Mesoscale Discussion	SPC	95 min
Apr 24, 9:24 AM CDT	Severe Thunderstorm Warning	LZK	36 min
Apr 24, 9:31 AM CDT	Tornado Warning	LZK	44 min
Apr 24, 9:31 AM CDT	Mesoscale Discussion	SPC	59 min
Apr 24, 9:44 AM CDT	Tornado Warning	LZK	46 min
Apr 24, 9:47 AM CDT	Tornado Warning	LZK	28 min
Apr 24, 10:24 AM CDT	Tornado Warning	LZK	14 min
Apr 24, 11:08 AM CDT	Mesoscale Discussion	SPC	67 min
Apr 25, 5:14 AM CDT	Lake Wind Advisory	LZK	15 hr
Apr 29, 3:36 AM CDT	Lake Wind Advisory	LZK	18 hr
Apr 29, 3:47 AM CDT	Flash Flood Watch	LZK	71 hr
Apr 30, 3:00 AM CDT	Lake Wind Advisory	LZK	16 hr
Apr 30, 5:53 PM CDT	Mesoscale Discussion	SPC	37 min
Apr 30, 8:46 PM CDT	Tornado Warning	LZK	44 min
Apr 30, 9:09 PM CDT	Tornado Watch PDS	SPC	7 hr
Apr 30, 10:27 PM CDT	Tornado Warning	LZK	48 min
Apr 30, 10:43 PM CDT	Mesoscale Discussion	SPC	62 min
Apr 30, 10:55 PM CDT	Tornado Warning	LZK	50 min
Apr 30, 11:28 PM CDT	Tornado Warning	LZK	32 min
Apr 30, 11:41 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 30, 11:56 PM CDT	Severe Thunderstorm Warning	LZK	34 min
May 1, 2:25 AM CDT	Mesoscale Discussion	SPC	95 min
May 1, 3:11 AM CDT	Tornado Watch	SPC	8 hr
May 1, 3:50 AM CDT	Areal Flood Warning	LZK	4 hr
May 1, 4:27 AM CDT	Areal Flood Warning	LZK	4 hr
May 1, 6:17 AM CDT	Mesoscale Discussion	SPC	88 min
May 1, 7:48 AM CDT	Mesoscale Discussion	SPC	57 min
May 1, 1:37 PM CDT	Mesoscale Discussion	SPC	53 min
May 1, 3:18 PM CDT	Tornado Watch PDS	SPC	7 hr
May 1, 5:43 PM CDT	Mesoscale Discussion	SPC	62 min
May 1, 6:42 PM CDT	Tornado Warning	LZK	48 min
May 1, 7:03 PM CDT	Tornado Warning	LZK	42 min
May 1, 7:08 PM CDT	Tornado Warning	LZK	52 min
May 1, 7:11 PM CDT	Mesoscale Discussion	SPC	64 min
May 1, 7:12 PM CDT	Tornado Warning	LZK	48 min
May 1, 7:28 PM CDT	Tornado Warning	LZK	32 min
May 1, 7:31 PM CDT	Tornado Warning	LZK	44 min
May 1, 8:07 PM CDT	Tornado Warning	LZK	53 min
May 1, 8:31 PM CDT	Mesoscale Discussion	SPC	44 min
May 1, 9:11 PM CDT	Tornado Warning	LZK	20 min
May 1, 9:53 PM CDT	Tornado Watch	SPC	6 hr
May 2, 2:33 AM CDT	Mesoscale Discussion	SPC	87 min
May 7, 3:56 AM CDT	Lake Wind Advisory	LZK	15 hr
May 11, 1:21 AM CDT	Wind Advisory	LZK	3 hr
May 14, 4:42 PM CDT	Mesoscale Discussion	SPC	63 min
May 14, 4:59 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 14, 7:04 PM CDT	Mesoscale Discussion	SPC	56 min
May 14, 10:42 PM CDT	Mesoscale Discussion	SPC	93 min
May 15, 4:01 AM CDT	Flash Flood Watch	LZK	39 hr
May 16, 1:28 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 16, 3:05 PM CDT	Mesoscale Discussion	SPC	85 min
May 16, 3:58 PM CDT	Severe Thunderstorm Warning	LZK	47 min
May 16, 4:21 PM CDT	Severe Thunderstorm Warning	LZK	69 min
May 16, 6:03 PM CDT	Mesoscale Discussion	SPC	57 min
May 17, 12:17 AM CDT	Dense Fog Advisory	LZK	10 hr
May 17, 5:05 PM CDT	Mesoscale Discussion	SPC	85 min
May 19, 4:40 AM CDT	Flash Flood Watch	LZK	36 hr
May 27, 5:06 PM CDT	Severe Thunderstorm Warning	LZK	24 min
Jun 2, 6:16 PM CDT	Flash Flood Warning	LZK	96 min
Jun 10, 11:58 AM CDT	Flash Flood Watch	LZK	26 hr
Jun 18, 3:18 AM CDT	Heat Advisory	LZK	5 days
Jun 25, 6:18 PM CDT	Flash Flood Warning	LZK	117 min
Jun 27, 6:30 AM CDT	Heat Advisory	LZK	13 hr
Jul 11, 1:11 PM CDT	Mesoscale Discussion	SPC	94 min
Jul 12, 3:23 AM CDT	Flash Flood Watch	LZK	30 hr
Jul 12, 2:24 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 12, 2:48 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 13, 2:53 PM CDT	Heat Advisory	LZK	52 hr
Jul 16, 3:55 AM CDT	Heat Advisory	LZK	15 hr
Jul 17, 2:49 PM CDT	Heat Advisory	LZK	28 hr
Jul 20, 2:41 PM CDT	Heat Advisory	LZK	3 days
Jul 26, 4:54 PM CDT	Special Weather Statement	LZK	41 min
Jul 26, 5:27 PM CDT	Severe Thunderstorm Warning	LZK	33 min
Jul 26, 6:12 PM CDT	Flash Flood Warning	LZK	2 hr
Jul 29, 2:36 PM CDT	Heat Advisory	LZK	8 days
Aug 1, 3:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 2, 4:06 AM CDT	Excessive Heat Warning	LZK	4 days
Aug 2, 4:06 AM CDT	Heat Advisory	LZK	10 hr
Aug 5, 2:36 PM CDT	Mesoscale Discussion	SPC	54 min
Aug 5, 4:38 PM CDT	Severe Thunderstorm Warning	LZK	37 min
Aug 5, 4:45 PM CDT	Severe Thunderstorm Warning	LZK	45 min
Aug 5, 5:11 PM CDT	Severe Thunderstorm Warning	LZK	49 min
Aug 5, 5:20 PM CDT	Severe Thunderstorm Warning	LZK	40 min
Aug 5, 5:30 PM CDT	Severe Thunderstorm Warning	LZK	45 min
Aug 5, 6:01 PM CDT	Flash Flood Warning	LZK	119 min
Aug 5, 6:04 PM CDT	Severe Thunderstorm Warning	LZK	41 min
Aug 7, 5:54 AM CDT	Flash Flood Warning	LZK	3 hr
Aug 7, 8:20 AM CDT	Flash Flood Warning	LZK	115 min
Aug 7, 3:25 PM CDT	Heat Advisory	LZK	9 days
Aug 15, 10:58 PM CDT	Flash Flood Warning	LZK	2 hr
Aug 18, 6:49 PM CDT	Severe Thunderstorm Warning	LZK	30 min
Aug 19, 4:11 AM CDT	Heat Advisory	LZK	15 hr
Aug 19, 1:58 PM CDT	Heat Advisory	LZK	29 hr
Aug 20, 4:03 AM CDT	Heat Advisory	LZK	63 hr
Aug 21, 12:54 PM CDT	Mesoscale Discussion	SPC	96 min
Sep 8, 3:50 PM CDT	Flash Flood Watch	LZK	27 hr
Sep 9, 10:28 AM CDT	River Flood Advisory	LZK	3 days
Oct 1, 4:35 AM CDT	Red Flag Warning	LZK	13 hr
Oct 2, 4:46 AM CDT	Fire Weather Watch	LZK	15 hr
Oct 2, 4:46 AM CDT	Red Flag Warning	LZK	14 hr
Oct 12, 11:34 AM CDT	Mesoscale Discussion	SPC	56 min
Oct 23, 3:41 AM CDT	Lake Wind Advisory	LZK	15 hr
Oct 23, 5:11 AM CDT	Red Flag Warning	LZK	14 hr
Oct 24, 2:29 AM CDT	Lake Wind Advisory	LZK	17 hr
Oct 24, 12:51 PM CDT	Mesoscale Discussion	SPC	84 min
Oct 24, 1:51 PM CDT	Tornado Watch	SPC	8 hr
Oct 24, 3:11 PM CDT	Severe Thunderstorm Warning	LZK	34 min
Oct 24, 3:36 PM CDT	Mesoscale Discussion	SPC	84 min
Oct 24, 5:00 PM CDT	Severe Thunderstorm Warning	LZK	45 min
Oct 24, 5:14 PM CDT	Severe Thunderstorm Warning	LZK	46 min
Oct 24, 5:29 PM CDT	Severe Thunderstorm Warning	LZK	31 min
Oct 24, 5:59 PM CDT	Severe Thunderstorm Warning	LZK	31 min
Oct 24, 6:00 PM CDT	Severe Thunderstorm Warning	LZK	45 min
Oct 24, 6:12 PM CDT	Mesoscale Discussion	SPC	63 min
Oct 24, 6:28 PM CDT	Severe Thunderstorm Warning	LZK	47 min
Oct 25, 3:49 AM CDT	Lake Wind Advisory	LZK	22 hr
Oct 26, 1:39 AM CDT	Lake Wind Advisory	LZK	17 hr
Oct 26, 1:39 AM CDT	Wind Advisory	LZK	10 hr
Oct 26, 4:05 AM CDT	Tornado Watch	SPC	8 hr
Oct 26, 6:00 AM CDT	Mesoscale Discussion	SPC	2 hr
Nov 2, 12:49 AM CDT	Special Weather Statement	LZK	31 min
Nov 2, 1:32 AM CDT	Special Weather Statement	LZK	43 min
Nov 4, 3:49 AM CDT	Lake Wind Advisory	LZK	17 hr
Nov 4, 3:12 PM CDT	Freeze Watch	LZK	13 hr
Nov 5, 3:44 AM CDT	Freeze Warning	LZK	29 hr
Nov 20, 4:11 AM CST	Dense Fog Advisory	LZK	7 hr
Nov 20, 8:29 PM CST	Dense Fog Advisory	LZK	10 hr
Nov 22, 4:36 AM CST	Lake Wind Advisory	LZK	15 hr
Nov 25, 3:39 AM CST	Lake Wind Advisory	LZK	18 hr
Nov 25, 9:44 AM CST	Mesoscale Discussion	SPC	61 min
Nov 25, 11:09 AM CST	Mesoscale Discussion	SPC	96 min
Nov 30, 3:39 AM CST	Lake Wind Advisory	LZK	14 hr
Dec 9, 4:06 AM CST	Freezing Fog Advisory	LZK	5 hr
Dec 11, 3:16 PM CST	Lake Wind Advisory	LZK	13 hr
Dec 11, 3:16 PM CST	Wind Advisory	LZK	30 hr
Dec 12, 11:32 AM CST	Lake Wind Advisory	LZK	9 hr
Dec 31, 4:56 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 31, 3:52 PM CST	Special Weather Statement	LZK	43 min
Dec 31, 4:53 PM CST	Severe Thunderstorm Warning	LZK	38 min
Dec 31, 5:21 PM CST	Severe Thunderstorm Warning	LZK	39 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	34
Tornado Warning	16
Severe Thunderstorm Watch	5
Tornado Watch	11
Mesoscale Discussion	46
Special Weather Statement	4
Flooding
Areal Flood Warning	2
Flash Flood Warning	7
Flash Flood Watch	7
River Flood Advisory	1
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	5
Heat
Excessive Heat Warning	1
Heat Advisory	12
Cold
Freeze Warning	1
Hard Freeze Warning	1
Freeze Watch	1
Wind Chill Advisory	1
Wind and dust
Lake Wind Advisory	26
Wind Advisory	3
Fire
Red Flag Warning	3
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	4
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 2009 2011

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.