Alert archive / Arkansas / Jefferson County

Weather alerts in Jefferson County, Arkansas, 2015

168 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts: 168
Warnings: 52
Watches: 29
Advisories: 43
Busiest month: May36 alerts
Busiest day: December 23, 201510 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 1 tornado warnings covering Jefferson County in 2015 had a tornado report inside them.

Jefferson County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	1	0%	0
Severe thunderstorm warnings	31	15	52%	10	90%	27 min
Flash flood warnings	5	3	40%	1	100%	84 min

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Little Rock, AR: tornado warnings	40	6	85%	14	71%	17 min
NWS Little Rock, AR: severe thunderstorm warnings	380	120	68%	248	88%	24 min
NWS Little Rock, AR: flash flood warnings	138	49	64%	76	83%	108 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, 2:16 PM CST	Lake Wind Advisory	LZK	28 hr
Jan 6, 2:39 PM CST	Lake Wind Advisory	LZK	27 hr
Jan 10, 2:54 PM CST	Winter Weather Advisory	LZK	24 hr
Jan 25, 2:17 AM CST	Lake Wind Advisory	LZK	19 hr
Feb 1, 3:59 AM CST	Lake Wind Advisory	LZK	26 hr
Feb 4, 2:40 AM CST	Lake Wind Advisory	LZK	26 hr
Feb 7, 11:10 AM CST	Lake Wind Advisory	LZK	7 hr
Feb 14, 4:16 AM CST	Winter Storm Watch	LZK	25 hr
Feb 15, 5:36 AM CST	Winter Storm Warning	LZK	31 hr
Feb 15, 5:36 AM CST	Winter Weather Advisory	LZK	34 hr
Feb 16, 2:57 AM CST	Mesoscale Discussion	SPC	6 hr
Feb 18, 1:52 PM CST	Winter Storm Watch	LZK	24 hr
Feb 19, 1:37 PM CST	Winter Weather Advisory	LZK	40 hr
Feb 19, 1:37 PM CST	Freezing Rain Advisory	LZK	19 hr
Feb 22, 4:41 AM CST	Winter Weather Advisory	LZK	41 hr
Feb 24, 3:43 AM CST	Winter Storm Watch	LZK	11 hr
Feb 24, 2:50 PM CST	Winter Storm Warning	LZK	27 hr
Feb 25, 1:42 PM CST	Mesoscale Discussion	SPC	3 hr
Feb 25, 11:23 PM CST	Freezing Fog Advisory	LZK	10 hr
Mar 2, 4:00 AM CST	Winter Storm Watch	LZK	23 hr
Mar 3, 12:11 AM CST	Dense Fog Advisory	LZK	11 hr
Mar 3, 3:22 AM CST	Winter Storm Warning	LZK	53 hr
Mar 3, 7:25 PM CST	Dense Fog Advisory	LZK	9 hr
Mar 4, 4:07 AM CST	Lake Wind Advisory	LZK	26 hr
Mar 4, 7:27 PM CST	Mesoscale Discussion	SPC	6 hr
Mar 11, 3:04 PM CDT	Flash Flood Watch	LZK	60 hr
Mar 13, 1:34 AM CDT	Areal Flood Warning	LZK	79 days
Mar 26, 2:47 AM CDT	Lake Wind Advisory	LZK	13 hr
Mar 31, 12:26 PM CDT	Severe Thunderstorm Warning	LZK	49 min
Mar 31, 12:41 PM CDT	Mesoscale Discussion	SPC	94 min
Mar 31, 1:12 PM CDT	Severe Thunderstorm Warning	LZK	48 min
Mar 31, 1:44 PM CDT	Severe Thunderstorm Warning	LZK	31 min
Mar 31, 1:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Mar 31, 2:00 PM CDT	Severe Thunderstorm Warning	LZK	45 min
Mar 31, 2:34 PM CDT	Tornado Warning	LZK	26 min
Mar 31, 2:47 PM CDT	Severe Thunderstorm Warning	LZK	43 min
Apr 1, 5:14 PM CDT	Mesoscale Discussion	SPC	91 min
Apr 3, 3:39 AM CDT	Lake Wind Advisory	LZK	17 hr
Apr 8, 2:35 PM CDT	Lake Wind Advisory	LZK	28 hr
Apr 9, 2:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 9, 3:06 PM CDT	Tornado Watch	SPC	7 hr
Apr 9, 6:11 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 9, 9:23 PM CDT	Mesoscale Discussion	SPC	67 min
Apr 9, 11:35 PM CDT	Flash Flood Warning	LZK	3 hr
Apr 16, 5:01 AM CDT	Dense Fog Advisory	LZK	4 hr
Apr 19, 4:45 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 19, 5:46 PM CDT	Tornado Watch	SPC	6 hr
Apr 19, 6:13 PM CDT	Severe Thunderstorm Warning	LZK	47 min
Apr 19, 6:53 PM CDT	Severe Thunderstorm Warning	LZK	37 min
Apr 19, 7:09 PM CDT	Severe Thunderstorm Warning	LZK	51 min
Apr 19, 7:09 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 19, 7:45 PM CDT	Severe Thunderstorm Warning	LZK	30 min
Apr 19, 7:59 PM CDT	Severe Thunderstorm Warning	LZK	46 min
Apr 19, 9:11 PM CDT	Special Weather Statement	LZK	29 min
Apr 19, 9:41 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 24, 9:26 PM CDT	Severe Thunderstorm Warning	LZK	49 min
Apr 24, 10:05 PM CDT	Severe Thunderstorm Warning	LZK	55 min
Apr 25, 3:25 AM CDT	Lake Wind Advisory	LZK	16 hr
May 9, 4:03 AM CDT	Flash Flood Watch	LZK	53 hr
May 9, 4:27 AM CDT	Special Weather Statement	LZK	58 min
May 9, 5:31 AM CDT	Special Weather Statement	LZK	29 min
May 9, 2:40 PM CDT	Tornado Watch	SPC	7 hr
May 9, 5:06 PM CDT	Mesoscale Discussion	SPC	54 min
May 9, 6:24 PM CDT	Severe Thunderstorm Warning	LZK	51 min
May 9, 8:46 PM CDT	Mesoscale Discussion	SPC	59 min
May 10, 5:05 PM CDT	Mesoscale Discussion	SPC	115 min
May 10, 11:31 PM CDT	Tornado Watch	SPC	5 hr
May 11, 3:53 AM CDT	Special Weather Statement	LZK	47 min
May 12, 2:15 PM CDT	River Flood Warning	LZK	3 days
May 17, 2:23 AM CDT	Flash Flood Watch	LZK	32 hr
May 20, 6:51 AM CDT	Flash Flood Warning	LZK	3 hr
May 20, 4:34 PM CDT	River Flood Advisory	LZK	36 hr
May 21, 3:02 PM CDT	Flash Flood Watch	LZK	5 days
May 22, 9:47 PM CDT	River Flood Advisory	LZK	36 hr
May 24, 3:52 AM CDT	Lake Wind Advisory	LZK	15 hr
May 24, 11:09 AM CDT	River Flood Warning	LZK	14 days
May 24, 12:34 PM CDT	Tornado Watch	SPC	6 hr
May 24, 3:15 PM CDT	Severe Thunderstorm Warning	LZK	30 min
May 24, 3:19 PM CDT	Severe Thunderstorm Warning	LZK	26 min
May 24, 3:31 PM CDT	Mesoscale Discussion	SPC	89 min
May 24, 3:41 PM CDT	Severe Thunderstorm Warning	LZK	49 min
May 24, 3:45 PM CDT	Severe Thunderstorm Warning	LZK	45 min
May 24, 4:30 PM CDT	Severe Thunderstorm Warning	LZK	60 min
May 25, 5:15 PM CDT	Mesoscale Discussion	SPC	90 min
May 25, 5:51 PM CDT	Tornado Watch	SPC	6 hr
May 25, 8:17 PM CDT	Severe Thunderstorm Warning	LZK	58 min
May 25, 8:52 PM CDT	Mesoscale Discussion	SPC	83 min
May 25, 9:37 PM CDT	Severe Thunderstorm Warning	LZK	23 min
May 25, 9:46 PM CDT	Special Weather Statement	LZK	59 min
May 29, 3:40 AM CDT	Flash Flood Watch	LZK	39 hr
May 29, 8:39 PM CDT	Mesoscale Discussion	SPC	66 min
May 29, 11:38 PM CDT	Flash Flood Warning	LZK	3 hr
May 31, 4:25 AM CDT	Areal Flood Warning	LZK	3 hr
May 31, 7:28 AM CDT	Areal Flood Warning	LZK	3 hr
Jun 5, 6:27 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 5, 9:17 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 24, 3:34 AM CDT	Heat Advisory	LZK	14 hr
Jun 24, 3:34 AM CDT	Heat Advisory	LZK	38 hr
Jun 26, 3:31 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 26, 6:28 PM CDT	Mesoscale Discussion	SPC	92 min
Jul 12, 2:41 AM CDT	Heat Advisory	LZK	9 days
Jul 15, 2:53 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 15, 4:31 PM CDT	Severe Thunderstorm Warning	LZK	29 min
Jul 15, 4:58 PM CDT	Special Weather Statement	LZK	62 min
Jul 23, 3:21 AM CDT	Heat Advisory	LZK	16 hr
Jul 23, 2:50 PM CDT	Heat Advisory	LZK	23 hr
Jul 23, 2:50 PM CDT	Heat Advisory	LZK	6 days
Jul 23, 4:18 PM CDT	Special Weather Statement	LZK	42 min
Jul 23, 4:24 PM CDT	Severe Thunderstorm Warning	LZK	36 min
Jul 28, 2:21 PM CDT	Excessive Heat Warning	LZK	29 hr
Aug 5, 1:06 PM CDT	Mesoscale Discussion	SPC	114 min
Aug 5, 1:59 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 5, 2:41 PM CDT	Heat Advisory	LZK	3 days
Aug 6, 2:44 PM CDT	Excessive Heat Warning	LZK	53 hr
Aug 6, 2:44 PM CDT	Heat Advisory	LZK	3 days
Aug 7, 5:41 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 8, 3:18 AM CDT	Excessive Heat Warning	LZK	41 hr
Aug 8, 2:17 PM CDT	Heat Advisory	LZK	54 hr
Aug 22, 12:53 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 19, 3:56 PM CDT	Special Weather Statement	LZK	34 min
Oct 12, 6:01 PM CDT	Severe Thunderstorm Warning	LZK	44 min
Oct 15, 2:19 PM CDT	Fire Weather Watch	LZK	38 hr
Oct 17, 4:36 AM CDT	Fire Weather Watch	LZK	23 hr
Oct 18, 8:47 AM CDT	Fire Weather Watch	LZK	34 hr
Nov 1, 1:52 AM CDT	Dense Fog Advisory	LZK	7 hr
Nov 10, 1:54 PM CST	Lake Wind Advisory	LZK	31 hr
Nov 13, 3:33 AM CST	Frost Advisory	LZK	29 hr
Nov 15, 2:27 PM CST	Flash Flood Watch	LZK	59 hr
Nov 16, 2:15 PM CST	Wind Advisory	LZK	28 hr
Nov 16, 9:39 PM CST	Lake Wind Advisory	LZK	14 hr
Nov 17, 9:59 AM CST	Mesoscale Discussion	SPC	2 hr
Nov 17, 11:07 AM CST	Tornado Watch	SPC	6 hr
Nov 17, 1:30 PM CST	Severe Thunderstorm Warning	LZK	30 min
Nov 17, 1:35 PM CST	Mesoscale Discussion	SPC	115 min
Nov 17, 2:00 PM CST	Severe Thunderstorm Warning	LZK	45 min
Nov 17, 2:56 PM CST	Severe Thunderstorm Warning	LZK	49 min
Nov 17, 2:59 PM CST	Severe Thunderstorm Warning	LZK	46 min
Nov 20, 2:26 PM CST	Freeze Warning	LZK	43 hr
Nov 20, 2:26 PM CST	Lake Wind Advisory	LZK	28 hr
Nov 25, 2:09 PM CST	Flash Flood Watch	LZK	4 days
Dec 11, 3:42 AM CST	Dense Fog Advisory	LZK	6 hr
Dec 13, 3:21 AM CST	Wind Advisory	LZK	16 hr
Dec 13, 12:32 PM CST	Special Weather Statement	LZK	43 min
Dec 13, 12:37 PM CST	Special Weather Statement	LZK	38 min
Dec 13, 1:07 PM CST	Special Weather Statement	LZK	38 min
Dec 14, 3:45 AM CST	Lake Wind Advisory	LZK	8 hr
Dec 23, 4:12 AM CST	Lake Wind Advisory	LZK	14 hr
Dec 23, 4:39 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 23, 6:20 AM CST	Tornado Watch	SPC	7 hr
Dec 23, 9:05 AM CST	Mesoscale Discussion	SPC	85 min
Dec 23, 10:51 AM CST	Special Weather Statement	LZK	24 min
Dec 23, 10:58 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 23, 11:00 AM CST	Severe Thunderstorm Warning	LZK	45 min
Dec 23, 11:57 AM CST	Tornado Watch PDS	SPC	9 hr
Dec 23, 12:48 PM CST	Mesoscale Discussion	SPC	57 min
Dec 23, 12:52 PM CST	Severe Thunderstorm Warning	LZK	53 min
Dec 24, 4:00 PM CST	Flash Flood Watch	LZK	4 days
Dec 25, 1:48 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 25, 1:31 PM CST	River Flood Warning	LZK	12 days
Dec 26, 4:09 AM CST	Severe Thunderstorm Warning	LZK	36 min
Dec 27, 2:47 PM CST	Tornado Watch	SPC	7 hr
Dec 27, 5:44 PM CST	Flash Flood Warning	LZK	6 hr
Dec 27, 6:47 PM CST	Severe Thunderstorm Warning	LZK	28 min
Dec 28, 1:39 AM CST	Flash Flood Warning	LZK	4 hr
Dec 28, 2:49 AM CST	Special Weather Statement	LZK	26 min
Dec 28, 3:38 AM CST	Wind Advisory	LZK	14 hr
Dec 28, 5:13 AM CST	Areal Flood Warning	LZK	12 hr
Dec 28, 4:55 PM CST	Areal Flood Warning	LZK	12 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	31
Tornado Warning	1
Severe Thunderstorm Watch	4
Tornado Watch	10
Mesoscale Discussion	31
Special Weather Statement	13
Flooding
Areal Flood Warning	5
Flash Flood Warning	5
River Flood Warning	3
Flash Flood Watch	8
River Flood Advisory	2
Winter
Winter Storm Warning	3
Winter Storm Watch	4
Freezing Rain Advisory	1
Winter Weather Advisory	4
Heat
Excessive Heat Warning	3
Heat Advisory	9
Cold
Freeze Warning	1
Frost Advisory	1
Wind and dust
Lake Wind Advisory	17
Wind Advisory	3
Fire
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	5
Freezing Fog Advisory	1

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.