Alert archive / Arkansas / Johnson County

Weather alerts in Johnson County, Arkansas, 2023

238 weather alerts in 2023, 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 2023. Tap one for its archive.

Alerts: 238
Warnings: 93
Watches: 25
Advisories: 50
Busiest month: June55 alerts
Busiest day: June 14, 202313 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 2 tornado warnings covering Johnson County in 2023 had a tornado report inside them.

Johnson County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	0
Severe thunderstorm warnings	50	14	72%	7	86%	16 min
Flash flood warnings	7	4	43%	1	100%	104 min

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Little Rock, AR: tornado warnings	82	7	91%	32	56%	17 min
NWS Little Rock, AR: severe thunderstorm warnings	561	162	71%	376	85%	24 min
NWS Little Rock, AR: flash flood warnings	109	32	71%	65	78%	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 1, 12:20 AM CST	Dense Fog Advisory	LZK	9 hr
Jan 1, 9:03 AM CST	Dense Fog Advisory	LZK	117 min
Jan 2, 1:22 PM CST	Tornado Watch	SPC	8 hr
Jan 2, 2:18 PM CST	Special Weather Statement	LZK	27 min
Jan 2, 2:21 PM CST	Tornado Warning	LZK	39 min
Jan 2, 3:15 PM CST	Severe Thunderstorm Warning	LZK	45 min
Jan 2, 3:19 PM CST	Mesoscale Discussion	SPC	86 min
Jan 3, 1:26 AM CST	Special Weather Statement	LZK	34 min
Jan 11, 7:30 PM CST	Mesoscale Discussion	SPC	2 hr
Jan 11, 8:56 PM CST	Severe Thunderstorm Warning Considerable damage threat	LZK	44 min
Jan 11, 9:14 PM CST	Special Weather Statement	LZK	31 min
Jan 15, 3:09 AM CST	Wind Advisory	LZK	33 hr
Jan 19, 3:05 AM CST	Wind Advisory	LZK	11 hr
Jan 22, 1:42 PM CST	Winter Storm Watch	LZK	24 hr
Jan 23, 2:03 PM CST	Winter Storm Warning	LZK	40 hr
Jan 23, 2:25 PM CST	Winter Weather Advisory	LZK	40 hr
Jan 24, 11:08 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 24, 6:09 PM CST	Mesoscale Discussion	SPC	6 hr
Jan 29, 2:44 PM CST	Winter Weather Advisory	LZK	13 hr
Jan 29, 9:14 PM CST	Winter Weather Advisory	LZK	45 hr
Jan 31, 11:03 AM CST	Mesoscale Discussion	SPC	4 hr
Feb 1, 2:44 AM CST	Winter Weather Advisory	LZK	31 hr
Feb 1, 5:30 PM CST	Mesoscale Discussion	SPC	6 hr
Feb 7, 2:27 PM CST	Flood Watch	LZK	34 hr
Feb 8, 9:41 AM CST	Flash Flood Warning	LZK	6 hr
Feb 8, 12:22 PM CST	Flash Flood Warning	LZK	4 hr
Feb 8, 3:20 PM CST	Areal Flood Warning	LZK	2 hr
Feb 8, 4:43 PM CST	Areal Flood Warning	LZK	30 min
Feb 13, 2:55 AM CST	Wind Advisory	LZK	45 hr
Feb 15, 9:44 PM CST	Severe Thunderstorm Watch	SPC	7 hr
Feb 15, 11:38 PM CST	Mesoscale Discussion	SPC	67 min
Feb 16, 12:35 AM CST	Severe Thunderstorm Warning	LZK	40 min
Feb 16, 12:51 AM CST	Severe Thunderstorm Warning	LZK	24 min
Feb 16, 1:08 AM CST	Severe Thunderstorm Warning	LZK	52 min
Feb 16, 1:23 AM CST	Severe Thunderstorm Warning	LZK	38 min
Feb 16, 1:36 AM CST	Severe Thunderstorm Warning	LZK	39 min
Feb 16, 2:22 AM CST	Severe Thunderstorm Warning	LZK	38 min
Feb 21, 2:00 PM CST	Wind Advisory	LZK	28 hr
Feb 22, 8:58 AM CST	Special Weather Statement	LZK	32 min
Feb 22, 9:37 AM CST	Special Weather Statement	LZK	23 min
Feb 26, 3:30 AM CST	Dense Fog Advisory	LZK	7 hr
Feb 26, 3:30 AM CST	Wind Advisory	LZK	33 hr
Feb 26, 7:12 PM CST	Dense Fog Advisory	LZK	4 hr
Feb 27, 1:48 AM CST	Special Weather Statement	LZK	27 min
Feb 28, 8:29 PM CST	Flood Watch	LZK	63 hr
Mar 2, 2:47 AM CST	Wind Advisory	LZK	39 hr
Mar 2, 6:14 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 2, 9:16 PM CST	Flash Flood Warning	LZK	10 hr
Mar 3, 11:15 AM CST	Areal Flood Warning	LZK	4 hr
Mar 12, 2:04 PM CDT	Freeze Watch	LZK	14 hr
Mar 12, 2:04 PM CDT	Freeze Warning	LZK	19 hr
Mar 13, 3:35 AM CDT	Freeze Warning	LZK	29 hr
Mar 14, 3:25 AM CDT	Freeze Warning	LZK	30 hr
Mar 16, 3:30 AM CDT	Freeze Watch	LZK	42 hr
Mar 16, 3:30 AM CDT	Freeze Warning	LZK	30 hr
Mar 17, 3:07 AM CDT	Freeze Warning	LZK	30 hr
Mar 17, 3:07 AM CDT	Freeze Warning	LZK	54 hr
Mar 18, 9:18 AM CDT	Freeze Warning	LZK	48 hr
Mar 22, 1:02 PM CDT	Flood Watch	LZK	55 hr
Mar 23, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Mar 24, 8:18 AM CDT	Flash Flood Warning	LZK	3 hr
Mar 24, 8:21 AM CDT	Special Weather Statement	LZK	24 min
Mar 24, 2:43 PM CDT	Special Weather Statement	LZK	32 min
Mar 24, 2:48 PM CDT	Severe Thunderstorm Warning	LZK	42 min
Mar 24, 3:00 PM CDT	Flash Flood Warning	LZK	3 hr
Mar 24, 3:14 PM CDT	Mesoscale Discussion	SPC	61 min
Mar 24, 3:40 PM CDT	Flash Flood Warning	LZK	3 hr
Mar 24, 9:47 PM CDT	River Flood Advisory	TSA	8 hr
Mar 25, 5:31 AM CDT	River Flood Warning	TSA	15 hr
Mar 28, 2:36 PM CDT	Frost Advisory	LZK	18 hr
Mar 30, 3:18 AM CDT	Wind Advisory	LZK	45 hr
Mar 30, 3:02 PM CDT	Mesoscale Discussion	SPC	118 min
Mar 31, 10:31 AM CDT	Special Weather Statement	LZK	29 min
Mar 31, 10:44 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 31, 11:28 AM CDT	Severe Thunderstorm Warning	LZK	15 min
Mar 31, 12:28 PM CDT	Tornado Watch PDS	SPC	11 hr
Mar 31, 12:29 PM CDT	Severe Thunderstorm Warning	LZK	16 min
Mar 31, 3:19 PM CDT	Severe Thunderstorm Warning	LZK	41 min
Mar 31, 3:42 PM CDT	Mesoscale Discussion	SPC	93 min
Mar 31, 3:45 PM CDT	Severe Thunderstorm Warning	LZK	45 min
Apr 4, 3:06 PM CDT	Mesoscale Discussion	SPC	114 min
Apr 5, 4:54 AM CDT	Tornado Watch	SPC	6 hr
Apr 5, 5:15 AM CDT	Special Weather Statement	LZK	30 min
Apr 5, 5:51 AM CDT	Special Weather Statement	LZK	24 min
Apr 5, 7:35 AM CDT	Severe Thunderstorm Warning	LZK	40 min
Apr 5, 7:56 AM CDT	Severe Thunderstorm Warning	LZK	49 min
Apr 5, 8:14 AM CDT	Severe Thunderstorm Warning	LZK	46 min
Apr 5, 8:39 AM CDT	Severe Thunderstorm Warning	LZK	51 min
Apr 15, 11:39 AM CDT	Mesoscale Discussion	SPC	3 hr
Apr 15, 12:48 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 15, 2:52 PM CDT	Severe Thunderstorm Warning	LZK	26 min
Apr 15, 3:17 PM CDT	Severe Thunderstorm Warning	LZK	43 min
Apr 15, 3:18 PM CDT	Severe Thunderstorm Warning	LZK	27 min
Apr 15, 3:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 15, 3:57 PM CDT	Severe Thunderstorm Warning	LZK	48 min
Apr 15, 4:11 PM CDT	Severe Thunderstorm Warning	LZK	49 min
Apr 20, 12:47 PM CDT	Mesoscale Discussion	SPC	58 min
Apr 20, 1:35 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Apr 20, 4:03 PM CDT	Special Weather Statement	LZK	42 min
Apr 20, 4:58 PM CDT	Mesoscale Discussion	SPC	92 min
Apr 20, 8:33 PM CDT	Severe Thunderstorm Warning	LZK	42 min
May 13, 4:11 PM CDT	Severe Thunderstorm Warning	LZK	20 min
May 19, 1:09 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 3, 12:40 PM CDT	Severe Thunderstorm Warning	LZK	25 min
Jun 5, 5:59 PM CDT	Special Weather Statement	LZK	31 min
Jun 5, 6:19 PM CDT	Special Weather Statement	LZK	26 min
Jun 5, 6:40 PM CDT	Special Weather Statement	LZK	35 min
Jun 6, 3:02 PM CDT	Special Weather Statement	LZK	28 min
Jun 6, 3:29 PM CDT	Special Weather Statement	LZK	31 min
Jun 8, 1:00 PM CDT	Special Weather Statement	LZK	30 min
Jun 8, 4:15 PM CDT	Special Weather Statement	LZK	30 min
Jun 9, 2:17 PM CDT	Special Weather Statement	LZK	28 min
Jun 10, 8:40 AM CDT	Special Weather Statement	LZK	65 min
Jun 13, 10:55 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 14, 4:06 AM CDT	Special Weather Statement	LZK	39 min
Jun 14, 4:08 AM CDT	Mesoscale Discussion	SPC	97 min
Jun 14, 4:16 AM CDT	Severe Thunderstorm Warning	LZK	44 min
Jun 14, 4:41 AM CDT	Special Weather Statement	LZK	34 min
Jun 14, 4:44 AM CDT	Severe Thunderstorm Warning	LZK	46 min
Jun 14, 4:48 AM CDT	Severe Thunderstorm Warning	LZK	42 min
Jun 14, 5:28 AM CDT	Severe Thunderstorm Warning	LZK	47 min
Jun 14, 7:50 AM CDT	Mesoscale Discussion	SPC	85 min
Jun 14, 8:10 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 14, 9:20 AM CDT	Special Weather Statement	LZK	25 min
Jun 14, 9:36 AM CDT	Severe Thunderstorm Warning	LZK	39 min
Jun 14, 4:37 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 14, 8:19 PM CDT	Mesoscale Discussion	SPC	86 min
Jun 14, 9:54 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LZK	35 min
Jun 14, 10:36 PM CDT	Special Weather Statement	LZK	39 min
Jun 16, 2:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 10:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 11:09 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 18, 12:57 AM CDT	Special Weather Statement	LZK	48 min
Jun 18, 1:05 AM CDT	Severe Thunderstorm Warning	LZK	55 min
Jun 18, 1:10 AM CDT	Tornado Warning	LZK	15 min
Jun 18, 1:43 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LZK	62 min
Jun 18, 2:01 AM CDT	Mesoscale Discussion	SPC	119 min
Jun 24, 3:46 AM CDT	Heat Advisory	LZK	16 hr
Jun 24, 3:46 AM CDT	Heat Advisory	LZK	40 hr
Jun 25, 12:05 PM CDT	Mesoscale Discussion	SPC	85 min
Jun 25, 2:27 PM CDT	Severe Thunderstorm Warning	LZK	48 min
Jun 25, 2:33 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 25, 2:47 PM CDT	Severe Thunderstorm Warning	LZK	43 min
Jun 25, 3:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LZK	46 min
Jun 25, 3:42 PM CDT	Flash Flood Warning	LZK	3 hr
Jun 25, 3:47 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 25, 3:56 PM CDT	Severe Thunderstorm Warning	LZK	49 min
Jun 25, 3:57 PM CDT	Severe Thunderstorm Warning	LZK	48 min
Jun 25, 7:02 PM CDT	Severe Thunderstorm Warning	LZK	28 min
Jun 25, 7:28 PM CDT	Severe Thunderstorm Warning	LZK	36 min
Jun 27, 12:01 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 27, 3:21 PM CDT	Excessive Heat Warning	LZK	53 hr
Jun 27, 3:21 PM CDT	Heat Advisory	LZK	29 hr
Jun 27, 3:21 PM CDT	Heat Advisory	LZK	29 hr
Jun 28, 3:43 AM CDT	Excessive Heat Warning	LZK	16 hr
Jun 28, 3:43 AM CDT	Heat Advisory	LZK	40 hr
Jun 28, 2:54 PM CDT	Heat Advisory	LZK	53 hr
Jun 29, 3:36 AM CDT	Excessive Heat Warning	LZK	40 hr
Jul 1, 2:25 PM CDT	Special Weather Statement	LZK	35 min
Jul 11, 2:29 PM CDT	Heat Advisory	LZK	30 hr
Jul 12, 2:13 PM CDT	Heat Advisory	LZK	29 hr
Jul 14, 7:56 PM CDT	Mesoscale Discussion	SPC	94 min
Jul 14, 8:37 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 14, 9:11 PM CDT	Severe Thunderstorm Warning	LZK	38 min
Jul 14, 9:38 PM CDT	Severe Thunderstorm Warning	LZK	52 min
Jul 17, 3:10 AM CDT	Heat Advisory	LZK	3 days
Jul 17, 2:35 PM CDT	Mesoscale Discussion	SPC	85 min
Jul 17, 2:45 PM CDT	Excessive Heat Warning	LZK	30 hr
Jul 17, 4:48 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 17, 8:40 PM CDT	Mesoscale Discussion	SPC	95 min
Jul 18, 2:08 PM CDT	Excessive Heat Warning	LZK	31 hr
Jul 18, 2:08 PM CDT	Heat Advisory	LZK	23 hr
Jul 19, 1:57 PM CDT	Excessive Heat Warning	LZK	31 hr
Jul 21, 9:11 AM CDT	Special Weather Statement	LZK	64 min
Jul 21, 9:43 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 25, 2:30 PM CDT	Heat Advisory	LZK	29 hr
Jul 26, 2:14 PM CDT	Heat Advisory	LZK	29 hr
Jul 27, 1:53 PM CDT	Heat Advisory	LZK	30 hr
Jul 28, 2:37 PM CDT	Heat Advisory	LZK	29 hr
Jul 29, 2:02 PM CDT	Heat Advisory	LZK	30 hr
Jul 30, 2:54 PM CDT	Heat Advisory	LZK	29 hr
Jul 30, 7:08 PM CDT	Severe Thunderstorm Warning	LZK	52 min
Jul 30, 10:28 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 10:53 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 31, 12:53 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 31, 4:28 PM CDT	Excessive Heat Warning	LZK	28 hr
Jul 31, 4:28 PM CDT	Heat Advisory	LZK	28 hr
Aug 1, 2:32 AM CDT	Excessive Heat Warning	LZK	42 hr
Aug 1, 2:32 AM CDT	Heat Advisory	LZK	42 hr
Aug 2, 2:53 AM CDT	Excessive Heat Warning	LZK	42 hr
Aug 2, 2:53 AM CDT	Heat Advisory	LZK	42 hr
Aug 3, 1:56 PM CDT	Excessive Heat Warning	LZK	31 hr
Aug 3, 1:56 PM CDT	Heat Advisory	LZK	31 hr
Aug 4, 2:24 PM CDT	Excessive Heat Warning	LZK	31 hr
Aug 4, 2:24 PM CDT	Heat Advisory	LZK	27 hr
Aug 5, 2:24 PM CDT	Heat Advisory	LZK	31 hr
Aug 7, 3:09 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 7, 4:21 AM CDT	Special Weather Statement	LZK	39 min
Aug 7, 4:26 AM CDT	Severe Thunderstorm Warning	LZK	23 min
Aug 7, 7:15 AM CDT	Severe Thunderstorm Warning	LZK	33 min
Aug 9, 6:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 7:58 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 8:06 PM CDT	Tornado Watch	SPC	7 hr
Aug 10, 12:47 AM CDT	Severe Thunderstorm Warning	LZK	23 min
Aug 10, 2:08 PM CDT	Heat Advisory	LZK	30 hr
Aug 11, 2:37 PM CDT	Heat Advisory	LZK	29 hr
Aug 11, 10:51 PM CDT	Severe Thunderstorm Warning	LZK	39 min
Aug 11, 11:29 PM CDT	Severe Thunderstorm Warning	LZK	23 min
Aug 12, 2:40 PM CDT	Excessive Heat Warning	LZK	29 hr
Aug 12, 2:40 PM CDT	Heat Advisory	LZK	29 hr
Aug 17, 1:47 PM CDT	Heat Advisory	LZK	30 hr
Aug 18, 2:18 PM CDT	Excessive Heat Warning	LZK	30 hr
Aug 18, 8:01 PM CDT	Heat Advisory	LZK	24 hr
Aug 19, 1:58 AM CDT	Excessive Heat Warning	LZK	42 hr
Aug 19, 1:58 AM CDT	Heat Advisory	LZK	42 hr
Aug 20, 3:20 AM CDT	Excessive Heat Warning	LZK	41 hr
Aug 20, 3:20 AM CDT	Heat Advisory	LZK	41 hr
Aug 21, 3:40 AM CDT	Excessive Heat Warning	LZK	40 hr
Aug 22, 3:15 AM CDT	Excessive Heat Warning	LZK	41 hr
Aug 23, 2:23 AM CDT	Excessive Heat Warning	LZK	43 hr
Aug 24, 2:21 AM CDT	Excessive Heat Warning	LZK	43 hr
Aug 24, 2:21 AM CDT	Heat Advisory	LZK	43 hr
Aug 25, 1:50 PM CDT	Excessive Heat Warning	LZK	31 hr
Aug 25, 1:50 PM CDT	Heat Advisory	LZK	31 hr
Aug 26, 3:53 PM CDT	Special Weather Statement	LZK	22 min
Aug 26, 5:15 PM CDT	Severe Thunderstorm Warning	LZK	17 min
Sep 4, 12:34 PM CDT	Special Weather Statement	LZK	26 min
Sep 4, 1:03 PM CDT	Severe Thunderstorm Warning	LZK	42 min
Sep 8, 2:41 AM CDT	Mesoscale Discussion	SPC	2 hr
Sep 23, 6:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 23, 9:44 PM CDT	Mesoscale Discussion	SPC	91 min
Sep 25, 6:17 AM CDT	Dense Fog Advisory	LZK	4 hr
Oct 27, 4:16 PM CDT	Mesoscale Discussion	SPC	89 min
Oct 28, 2:27 PM CDT	Freeze Warning	LZK	43 hr
Oct 29, 2:26 PM CDT	Freeze Watch	LZK	13 hr
Oct 30, 3:30 AM CDT	Freeze Warning	LZK	30 hr
Dec 8, 9:25 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 17, 12:21 AM CST	Freezing Fog Advisory	LZK	9 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	50
Tornado Warning	2
Severe Thunderstorm Watch	14
Tornado Watch	4
Mesoscale Discussion	39
Special Weather Statement	31
Flooding
Areal Flood Warning	3
Flash Flood Warning	7
River Flood Warning	1
Flood Watch	3
River Flood Advisory	1
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	4
Heat
Excessive Heat Warning	20
Heat Advisory	31
Cold
Freeze Warning	9
Freeze Watch	3
Frost Advisory	1
Wind and dust
Wind Advisory	7
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 2022 2024

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.