Alert archive / Arkansas / Johnson County

Weather alerts in Johnson County, Arkansas, 2024

190 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Johnson County and its neighbors

Each county as a circle sized by its count in 2024. Tap one for its archive.

Alerts: 190
Warnings: 46
Watches: 21
Advisories: 60
Busiest month: May41 alerts
Busiest day: August 17, 20249 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 Johnson County in 2024 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.

Johnson County, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	4	0	100%	1	0%
Severe thunderstorm warnings	17	4	76%	7	100%	27 min
Flash flood warnings	4	3	25%	0

Each office's whole area, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Little Rock, AR: tornado warnings	70	11	84%	27	48%	22 min
NWS Little Rock, AR: severe thunderstorm warnings	317	114	64%	247	80%	22 min
NWS Little Rock, AR: flash flood warnings	60	18	70%	41	98%	98 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 4, 1:21 PM CST	Winter Weather Advisory	LZK	24 hr
Jan 7, 3:22 PM CST	Wind Advisory	LZK	51 hr
Jan 8, 1:59 PM CST	Winter Weather Advisory	LZK	25 hr
Jan 11, 3:16 AM CST	Wind Advisory	LZK	42 hr
Jan 11, 8:28 PM CST	Mesoscale Discussion	SPC	2 hr
Jan 11, 9:56 PM CST	Tornado Watch	SPC	6 hr
Jan 12, 2:34 AM CST	Winter Weather Advisory	LZK	9 hr
Jan 12, 3:44 PM CST	Wind Chill Advisory	LZK	4 days
Jan 12, 3:44 PM CST	Winter Storm Watch	LZK	23 hr
Jan 13, 3:07 PM CST	Wind Chill Warning	LZK	21 hr
Jan 13, 3:07 PM CST	Winter Storm Warning	LZK	45 hr
Jan 14, 11:58 AM CST	Wind Chill Advisory	LZK	58 hr
Jan 14, 10:05 PM CST	Winter Weather Advisory	LZK	14 hr
Jan 18, 2:54 AM CST	Wind Chill Advisory	LZK	33 hr
Jan 18, 4:21 PM CST	Wind Chill Advisory	LZK	44 hr
Jan 20, 1:49 PM CST	Winter Storm Watch	LZK	13 hr
Jan 21, 2:24 AM CST	Ice Storm Warning	LZK	35 hr
Jan 22, 12:51 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 23, 1:41 AM CST	Dense Fog Advisory	LZK	10 hr
Jan 23, 12:04 PM CST	Dense Fog Advisory	LZK	24 hr
Jan 24, 2:51 PM CST	Dense Fog Advisory	LZK	20 hr
Jan 25, 10:45 PM CST	Dense Fog Advisory	LZK	11 hr
Feb 9, 2:49 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 11, 1:07 PM CST	Winter Weather Advisory	LZK	26 hr
Feb 22, 1:41 PM CST	Mesoscale Discussion	SPC	3 hr
Feb 22, 6:12 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 27, 2:42 AM CST	Wind Advisory	LZK	33 hr
Mar 5, 6:15 AM CST	Special Weather Statement	LZK	45 min
Mar 5, 6:50 AM CST	Special Weather Statement	LZK	25 min
Mar 5, 7:00 AM CST	Special Weather Statement	LZK	30 min
Mar 7, 3:37 AM CST	Special Weather Statement	LZK	38 min
Mar 14, 10:00 AM CDT	Mesoscale Discussion	SPC	90 min
Mar 14, 1:33 PM CDT	Tornado Watch	SPC	7 hr
Mar 14, 3:50 PM CDT	Mesoscale Discussion	SPC	85 min
Mar 14, 5:31 PM CDT	Mesoscale Discussion	SPC	119 min
Mar 14, 6:21 PM CDT	Special Weather Statement	LZK	24 min
Mar 14, 6:26 PM CDT	Severe Thunderstorm Warning	LZK	20 min
Mar 14, 6:48 PM CDT	Special Weather Statement	LZK	27 min
Mar 14, 6:54 PM CDT	Severe Thunderstorm Warning	LZK	37 min
Mar 14, 9:10 PM CDT	Flash Flood Warning	LZK	2 hr
Mar 17, 2:58 AM CDT	Freeze Watch	LZK	23 hr
Mar 17, 2:58 AM CDT	Freeze Warning	LZK	30 hr
Mar 18, 2:00 AM CDT	Freeze Warning	LZK	31 hr
Mar 24, 3:01 AM CDT	Wind Advisory	LZK	40 hr
Mar 26, 2:11 PM CDT	Frost Advisory	LZK	19 hr
Mar 27, 2:17 PM CDT	Frost Advisory	LZK	19 hr
Apr 2, 12:32 AM CDT	Mesoscale Discussion	SPC	88 min
Apr 4, 2:15 PM CDT	Frost Advisory	LZK	18 hr
Apr 10, 2:30 PM CDT	Wind Advisory	LZK	27 hr
Apr 18, 3:01 PM CDT	Mesoscale Discussion	SPC	119 min
Apr 18, 3:37 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 18, 8:41 PM CDT	Mesoscale Discussion	SPC	94 min
Apr 27, 2:26 PM CDT	Flood Watch	LZK	36 hr
Apr 28, 4:11 AM CDT	Mesoscale Discussion	SPC	64 min
Apr 28, 5:31 AM CDT	Special Weather Statement	LZK	29 min
Apr 28, 5:15 PM CDT	Tornado Watch	SPC	6 hr
Apr 28, 10:10 PM CDT	Severe Thunderstorm Warning	LZK	35 min
Apr 29, 3:30 PM CDT	Special Weather Statement	LZK	45 min
Apr 29, 9:20 PM CDT	Dense Fog Advisory	LZK	13 hr
May 1, 7:32 AM CDT	Special Weather Statement	LZK	28 min
May 1, 3:38 PM CDT	River Flood Advisory	TSA	41 hr
May 3, 3:21 AM CDT	Special Weather Statement	LZK	24 min
May 3, 11:18 AM CDT	River Flood Warning	TSA	27 hr
May 4, 10:49 AM CDT	Mesoscale Discussion	SPC	116 min
May 4, 2:04 PM CDT	River Flood Advisory	TSA	24 hr
May 4, 3:53 PM CDT	Mesoscale Discussion	SPC	97 min
May 6, 2:17 AM CDT	Dense Fog Advisory	LZK	7 hr
May 6, 9:26 AM CDT	River Flood Advisory	TSA	48 hr
May 6, 10:13 PM CDT	Tornado Watch	SPC	9 hr
May 7, 1:39 AM CDT	Mesoscale Discussion	SPC	2 hr
May 7, 3:10 AM CDT	Tornado Warning	LZK	35 min
May 7, 3:12 AM CDT	Severe Thunderstorm Warning	LZK	48 min
May 7, 3:26 AM CDT	Tornado Warning	LZK	8 min
May 7, 3:29 AM CDT	Mesoscale Discussion	SPC	2 hr
May 7, 3:56 AM CDT	Severe Thunderstorm Warning	LZK	49 min
May 8, 10:29 AM CDT	River Flood Warning	TSA	22 hr
May 8, 2:18 PM CDT	Tornado Watch	SPC	8 hr
May 8, 7:59 PM CDT	Mesoscale Discussion	SPC	2 hr
May 8, 8:15 PM CDT	Special Weather Statement	LZK	45 min
May 8, 8:55 PM CDT	Special Weather Statement	LZK	50 min
May 8, 9:40 PM CDT	Severe Thunderstorm Warning	LZK	28 min
May 13, 6:16 PM CDT	Mesoscale Discussion	SPC	119 min
May 17, 6:44 PM CDT	Special Weather Statement	LZK	31 min
May 17, 7:53 PM CDT	Special Weather Statement	LZK	37 min
May 21, 3:45 PM CDT	Severe Thunderstorm Warning	LZK	32 min
May 21, 3:55 PM CDT	Mesoscale Discussion	SPC	2 hr
May 21, 7:30 PM CDT	Severe Thunderstorm Warning	LZK	45 min
May 21, 7:31 PM CDT	Tornado Warning	LZK	44 min
May 21, 7:55 PM CDT	Mesoscale Discussion	SPC	2 hr
May 21, 8:18 PM CDT	Tornado Watch	SPC	6 hr
May 22, 9:49 AM CDT	Mesoscale Discussion	SPC	116 min
May 22, 10:02 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 22, 10:13 AM CDT	Severe Thunderstorm Warning	LZK	47 min
May 23, 4:14 AM CDT	Special Weather Statement	LZK	31 min
May 23, 5:50 AM CDT	Special Weather Statement	LZK	25 min
May 24, 11:56 AM CDT	Mesoscale Discussion	SPC	64 min
May 24, 3:10 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
May 24, 5:39 PM CDT	Mesoscale Discussion	SPC	2 hr
May 25, 12:30 AM CDT	Special Weather Statement	LZK	30 min
May 25, 12:57 AM CDT	Severe Thunderstorm Warning	LZK	33 min
Jun 3, 2:28 PM CDT	Special Weather Statement	LZK	47 min
Jun 3, 2:39 PM CDT	Severe Thunderstorm Warning	LZK	36 min
Jun 3, 3:02 PM CDT	Special Weather Statement	LZK	43 min
Jun 9, 2:37 PM CDT	Special Weather Statement	LZK	23 min
Jun 9, 3:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 9, 3:31 PM CDT	Severe Thunderstorm Warning	LZK	44 min
Jun 9, 3:59 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 9, 5:43 PM CDT	Special Weather Statement	LZK	32 min
Jun 22, 2:02 PM CDT	Heat Advisory	LZK	31 hr
Jun 23, 1:57 PM CDT	Heat Advisory	LZK	31 hr
Jun 23, 9:43 PM CDT	Heat Advisory	LZK	47 hr
Jun 24, 10:45 AM CDT	Excessive Heat Warning	LZK	10 hr
Jun 26, 2:41 AM CDT	Heat Advisory	LZK	11 hr
Jun 26, 4:11 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 26, 5:51 AM CDT	Mesoscale Discussion	SPC	84 min
Jun 26, 7:50 AM CDT	Mesoscale Discussion	SPC	85 min
Jun 26, 8:22 AM CDT	Special Weather Statement	LZK	38 min
Jun 28, 1:44 PM CDT	Excessive Heat Warning	LZK	30 hr
Jun 28, 1:44 PM CDT	Heat Advisory	LZK	30 hr
Jun 29, 2:45 PM CDT	Heat Advisory	LZK	27 hr
Jul 1, 1:52 PM CDT	Heat Advisory	LZK	31 hr
Jul 2, 2:53 AM CDT	Excessive Heat Warning	LZK	18 hr
Jul 2, 1:42 PM CDT	Excessive Heat Warning	LZK	31 hr
Jul 2, 1:42 PM CDT	Heat Advisory	LZK	31 hr
Jul 3, 3:54 AM CDT	Excessive Heat Warning	LZK	41 hr
Jul 3, 3:54 AM CDT	Heat Advisory	LZK	41 hr
Jul 4, 5:37 PM CDT	Mesoscale Discussion	SPC	53 min
Jul 8, 2:38 AM CDT	Flood Watch	LZK	32 hr
Jul 13, 2:28 PM CDT	Heat Advisory	LZK	30 hr
Jul 14, 2:23 PM CDT	Heat Advisory	LZK	30 hr
Jul 15, 2:18 PM CDT	Excessive Heat Warning	LZK	30 hr
Jul 15, 2:18 PM CDT	Heat Advisory	LZK	30 hr
Jul 17, 3:30 AM CDT	Flood Watch	LZK	9 hr
Jul 28, 3:25 AM CDT	Heat Advisory	LZK	41 hr
Jul 29, 3:42 AM CDT	Excessive Heat Warning	LZK	40 hr
Jul 29, 3:42 AM CDT	Heat Advisory	LZK	40 hr
Jul 30, 3:09 AM CDT	Excessive Heat Warning	LZK	41 hr
Jul 30, 3:09 AM CDT	Heat Advisory	LZK	41 hr
Jul 31, 2:55 AM CDT	Excessive Heat Warning	LZK	41 hr
Jul 31, 2:55 AM CDT	Heat Advisory	LZK	41 hr
Aug 12, 1:43 PM CDT	Heat Advisory	LZK	30 hr
Aug 13, 1:58 PM CDT	Heat Advisory	LZK	30 hr
Aug 14, 2:56 AM CDT	Excessive Heat Warning	LZK	17 hr
Aug 14, 2:08 PM CDT	Excessive Heat Warning	LZK	30 hr
Aug 14, 2:08 PM CDT	Heat Advisory	LZK	30 hr
Aug 15, 1:57 PM CDT	Excessive Heat Warning	LZK	31 hr
Aug 15, 1:57 PM CDT	Heat Advisory	LZK	31 hr
Aug 16, 2:45 PM CDT	Excessive Heat Warning	LZK	30 hr
Aug 16, 2:45 PM CDT	Heat Advisory	LZK	30 hr
Aug 16, 8:45 PM CDT	Mesoscale Discussion	SPC	60 min
Aug 16, 9:03 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 16, 10:27 PM CDT	Special Weather Statement	LZK	48 min
Aug 16, 11:11 PM CDT	Special Weather Statement	LZK	49 min
Aug 16, 11:15 PM CDT	Severe Thunderstorm Warning	LZK	30 min
Aug 16, 11:23 PM CDT	Mesoscale Discussion	SPC	97 min
Aug 17, 1:22 AM CDT	Mesoscale Discussion	SPC	113 min
Aug 17, 2:22 PM CDT	Excessive Heat Warning	LZK	30 hr
Aug 17, 2:22 PM CDT	Heat Advisory	LZK	30 hr
Aug 18, 2:53 PM CDT	Mesoscale Discussion	SPC	67 min
Aug 18, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Aug 18, 6:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 18, 7:10 PM CDT	Severe Thunderstorm Warning	LZK	35 min
Aug 18, 7:13 PM CDT	Severe Thunderstorm Warning	LZK	47 min
Aug 18, 7:41 PM CDT	Severe Thunderstorm Warning	LZK	49 min
Sep 2, 1:43 AM CDT	Dense Fog Advisory	LZK	5 hr
Sep 20, 1:26 AM CDT	Heat Advisory	LZK	17 hr
Sep 21, 10:47 AM CDT	Heat Advisory	LZK	7 hr
Oct 14, 1:27 PM CDT	Frost Advisory	LZK	43 hr
Oct 16, 3:10 AM CDT	Frost Advisory	LZK	29 hr
Nov 3, 1:44 AM CST	Flood Watch	LZK	58 hr
Nov 3, 4:38 AM CST	Mesoscale Discussion	SPC	2 hr
Nov 3, 10:04 PM CST	Special Weather Statement	LZK	41 min
Nov 3, 10:45 PM CST	Special Weather Statement	LZK	45 min
Nov 4, 4:10 AM CST	Tornado Warning	LZK	35 min
Nov 4, 4:49 AM CST	Flash Flood Warning	LZK	4 hr
Nov 4, 6:10 AM CST	Flash Flood Warning	LZK	3 hr
Nov 4, 1:26 PM CST	Mesoscale Discussion	SPC	2 hr
Nov 4, 1:35 PM CST	Tornado Watch	SPC	9 hr
Nov 4, 3:05 PM CST	Severe Thunderstorm Warning	LZK	16 min
Nov 4, 3:16 PM CST	Special Weather Statement	LZK	29 min
Nov 4, 8:14 PM CST	Mesoscale Discussion	SPC	91 min
Nov 4, 8:16 PM CST	Flash Flood Warning	LZK	13 hr
Nov 5, 2:28 AM CST	River Flood Advisory	TSA	21 hr
Nov 14, 1:28 PM CST	Frost Advisory	LZK	19 hr
Nov 18, 3:26 PM CST	Special Weather Statement	LZK	34 min
Nov 19, 6:26 AM CST	Dense Fog Advisory	LZK	4 hr
Dec 8, 8:20 PM CST	Dense Fog Advisory	LZK	11 hr
Dec 14, 6:43 PM CST	Dense Fog Advisory	LZK	16 hr
Dec 25, 1:56 PM CST	Dense Fog Advisory	LZK	21 hr
Dec 29, 6:01 PM CST	Dense Fog Advisory	LZK	17 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	17
Tornado Warning	4
Severe Thunderstorm Watch	7
Tornado Watch	7
Mesoscale Discussion	35
Special Weather Statement	28
Flooding
Flash Flood Warning	4
River Flood Warning	2
Flood Watch	4
River Flood Advisory	4
Winter
Ice Storm Warning	1
Winter Storm Warning	1
Winter Storm Watch	2
Winter Weather Advisory	5
Heat
Excessive Heat Warning	14
Heat Advisory	24
Cold
Freeze Warning	2
Wind Chill Warning	1
Freeze Watch	1
Frost Advisory	6
Wind Chill Advisory	4
Wind and dust
Wind Advisory	5
Fog and smoke
Dense Fog Advisory	12

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2023 2025

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.