Weather alerts in White County, Arkansas, 2020

156 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

White County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts: 156
Warnings: 55
Watches: 20
Advisories: 31
Busiest month: April26 alerts
Busiest day: September 1, 20209 alerts

Over time

By month

Warning verification

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

3 of 7 tornado warnings covering White County in 2020 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.

White County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	7	3	57%	2	0%
Severe thunderstorm warnings	28	12	57%	8	88%	26 min
Flash flood warnings	5	1	80%	1	100%	162 min

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Little Rock, AR: tornado warnings	54	11	80%	30	70%	16 min
NWS Little Rock, AR: severe thunderstorm warnings	376	136	64%	298	85%	24 min
NWS Little Rock, AR: flash flood warnings	107	43	60%	104	84%	82 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 9, 4:30 AM CST	Flash Flood Watch	LZK	49 hr
Jan 9, 11:49 AM CST	River Flood Warning	LZK	194 days
Jan 10, 4:53 AM CST	Mesoscale Discussion	SPC	2 hr
Jan 10, 4:55 PM CST	Mesoscale Discussion	SPC	2 hr
Jan 10, 5:34 PM CST	Tornado Watch	SPC	11 hr
Jan 10, 10:40 PM CST	Mesoscale Discussion	SPC	2 hr
Jan 10, 11:05 PM CST	Severe Thunderstorm Warning	LZK	55 min
Jan 11, 12:03 AM CST	Flash Flood Warning	LZK	3 hr
Jan 11, 12:08 AM CST	Severe Thunderstorm Warning	LZK	67 min
Jan 11, 1:17 AM CST	Severe Thunderstorm Warning	LZK	58 min
Jan 11, 3:03 AM CST	Areal Flood Warning	LZK	3 hr
Jan 11, 9:46 AM CST	River Flood Warning	LZK	63 days
Jan 11, 6:24 PM CST	River Flood Warning	LZK	14 hr
Jan 14, 4:01 AM CST	Dense Fog Advisory	LZK	5 hr
Jan 14, 9:22 AM CST	Dense Fog Advisory	LZK	98 min
Jan 14, 6:24 PM CST	Dense Fog Advisory	LZK	15 hr
Jan 15, 9:03 AM CST	Dense Fog Advisory	LZK	117 min
Jan 26, 10:52 PM CST	Dense Fog Advisory	LZK	11 hr
Jan 27, 10:02 AM CST	Dense Fog Advisory	LZK	118 min
Jan 27, 11:31 PM CST	Dense Fog Advisory	LZK	12 hr
Feb 10, 3:33 AM CST	Flash Flood Watch	LZK	62 hr
Feb 24, 12:20 PM CST	Mesoscale Discussion	SPC	115 min
Mar 3, 12:30 AM CST	Special Weather Statement	LZK	30 min
Mar 11, 8:20 AM CDT	Severe Thunderstorm Warning	LZK	40 min
Mar 11, 8:48 AM CDT	Severe Thunderstorm Warning	LZK	42 min
Mar 11, 9:27 AM CDT	Severe Thunderstorm Warning	LZK	48 min
Mar 11, 9:54 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 12, 2:31 PM CDT	Mesoscale Discussion	SPC	89 min
Mar 12, 3:44 PM CDT	Tornado Watch	SPC	7 hr
Mar 12, 7:19 PM CDT	Severe Thunderstorm Warning	LZK	28 min
Mar 18, 10:48 AM CDT	River Flood Warning	LZK	47 days
Mar 19, 2:24 PM CDT	Tornado Watch	SPC	8 hr
Mar 19, 9:50 PM CDT	Tornado Watch	SPC	6 hr
Mar 19, 10:47 PM CDT	Special Weather Statement	LZK	28 min
Mar 19, 11:14 PM CDT	Special Weather Statement	LZK	46 min
Mar 24, 2:15 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 28, 12:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 28, 2:10 PM CDT	Tornado Watch	SPC	5 hr
Mar 28, 2:56 PM CDT	Mesoscale Discussion	SPC	94 min
Mar 28, 3:11 PM CDT	Severe Thunderstorm Warning	LZK	49 min
Apr 8, 5:10 AM CDT	Dense Fog Advisory	LZK	5 hr
Apr 12, 3:17 AM CDT	Wind Advisory	LZK	28 hr
Apr 12, 4:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 12, 5:59 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 12, 7:33 PM CDT	Severe Thunderstorm Warning	LZK	57 min
Apr 12, 7:56 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 12, 8:19 PM CDT	Severe Thunderstorm Warning	LZK	41 min
Apr 12, 8:53 PM CDT	Severe Thunderstorm Warning	LZK	52 min
Apr 14, 2:38 PM CDT	Freeze Warning	LZK	18 hr
Apr 20, 1:33 AM CDT	Dense Fog Advisory	LZK	9 hr
Apr 22, 3:38 PM CDT	Wind Advisory	LZK	12 hr
Apr 22, 10:42 PM CDT	Special Weather Statement	LZK	48 min
Apr 24, 8:31 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 24, 10:17 PM CDT	Mesoscale Discussion	SPC	118 min
Apr 24, 10:37 PM CDT	Severe Thunderstorm Warning	LZK	68 min
Apr 24, 11:26 PM CDT	Special Weather Statement	LZK	34 min
Apr 25, 1:24 PM CDT	Wind Advisory	LZK	6 hr
Apr 28, 6:41 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 28, 7:35 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 28, 9:58 PM CDT	Severe Thunderstorm Warning	LZK	47 min
Apr 28, 10:08 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 28, 10:28 PM CDT	Severe Thunderstorm Warning	LZK	47 min
Apr 28, 10:41 PM CDT	Tornado Warning	LZK	20 min
Apr 28, 10:43 PM CDT	Severe Thunderstorm Warning	LZK	32 min
Apr 28, 10:46 PM CDT	Severe Thunderstorm Warning	LZK	44 min
Apr 28, 11:13 PM CDT	Severe Thunderstorm Warning	LZK	47 min
May 7, 2:52 PM CDT	Wind Advisory	LZK	28 hr
May 17, 10:21 AM CDT	River Flood Warning	LZK	21 days
May 22, 9:52 AM CDT	River Flood Warning	LZK	28 days
May 22, 12:02 PM CDT	Mesoscale Discussion	SPC	88 min
May 22, 7:34 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 23, 12:32 AM CDT	Severe Thunderstorm Warning	LZK	43 min
May 23, 2:03 AM CDT	Severe Thunderstorm Warning	LZK	42 min
May 23, 2:24 AM CDT	Severe Thunderstorm Warning	LZK	33 min
May 23, 2:56 AM CDT	Special Weather Statement	LZK	49 min
May 23, 3:08 AM CDT	Severe Thunderstorm Warning	LZK	31 min
May 23, 3:35 AM CDT	Severe Thunderstorm Warning	LZK	25 min
May 25, 3:17 AM CDT	Flash Flood Watch	LZK	48 hr
May 25, 9:24 PM CDT	Special Weather Statement	LZK	51 min
May 25, 9:40 PM CDT	Severe Thunderstorm Warning	LZK	38 min
Jun 5, 10:38 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 5, 1:28 PM CDT	Severe Thunderstorm Warning	LZK	32 min
Jun 7, 2:50 AM CDT	Flash Flood Watch	LZK	49 hr
Jun 7, 12:29 PM CDT	River Flood Warning	LZK	56 hr
Jun 7, 3:04 PM CDT	Wind Advisory	LZK	52 hr
Jun 9, 8:34 PM CDT	River Flood Advisory	LZK	14 hr
Jun 9, 8:41 PM CDT	Mesoscale Discussion	SPC	94 min
Jun 9, 10:39 PM CDT	Special Weather Statement	LZK	51 min
Jun 23, 12:01 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 30, 2:22 PM CDT	Heat Advisory	LZK	53 hr
Jul 1, 2:49 PM CDT	Special Weather Statement	LZK	41 min
Jul 2, 4:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 4, 12:59 PM CDT	Special Weather Statement	LZK	31 min
Jul 4, 1:23 PM CDT	Flash Flood Warning	LZK	102 min
Jul 5, 2:36 PM CDT	Special Weather Statement	LZK	39 min
Jul 9, 10:20 AM CDT	Special Weather Statement	LZK	25 min
Jul 9, 10:46 AM CDT	Mesoscale Discussion	SPC	119 min
Jul 9, 12:13 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 9, 2:32 PM CDT	Special Weather Statement	LZK	43 min
Jul 9, 3:41 PM CDT	Mesoscale Discussion	SPC	94 min
Jul 10, 9:19 PM CDT	Heat Advisory	LZK	23 hr
Jul 13, 2:32 PM CDT	Heat Advisory	LZK	29 hr
Jul 14, 2:43 PM CDT	Heat Advisory	LZK	29 hr
Jul 15, 2:22 PM CDT	Heat Advisory	LZK	30 hr
Jul 16, 12:26 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 19, 5:13 PM CDT	Severe Thunderstorm Warning	LZK	47 min
Jul 30, 3:41 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 3:22 AM CDT	Heat Advisory	LZK	17 hr
Aug 11, 12:34 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 11, 3:30 PM CDT	Flash Flood Warning	LZK	3 hr
Aug 16, 12:04 AM CDT	Special Weather Statement	LZK	26 min
Aug 22, 3:16 AM CDT	Dense Fog Advisory	LZK	6 hr
Aug 26, 3:11 AM CDT	Flash Flood Watch	LZK	50 hr
Aug 26, 6:32 PM CDT	Special Weather Statement	LZK	28 min
Aug 27, 3:32 AM CDT	Wind Advisory	LZK	20 hr
Aug 27, 11:09 AM CDT	River Flood Warning	LZK	33 hr
Aug 27, 3:47 PM CDT	Tornado Watch	SPC	8 hr
Aug 27, 5:50 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 27, 6:08 PM CDT	Tornado Warning	LZK	52 min
Aug 27, 6:19 PM CDT	Flash Flood Warning	LZK	3 hr
Aug 27, 6:54 PM CDT	Tornado Warning	LZK	8 min
Aug 27, 7:14 PM CDT	Tornado Warning	LZK	28 min
Aug 27, 7:21 PM CDT	Flash Flood Warning	LZK	3 hr
Aug 27, 11:02 PM CDT	Wind Advisory	LZK	8 hr
Aug 28, 10:51 AM CDT	River Flood Warning	LZK	12 days
Aug 28, 2:43 PM CDT	Heat Advisory	LZK	29 hr
Aug 29, 4:01 AM CDT	Flash Flood Watch	LZK	27 hr
Aug 29, 11:17 AM CDT	Excessive Heat Warning	LZK	9 hr
Aug 29, 11:56 AM CDT	Mesoscale Discussion	SPC	94 min
Aug 29, 1:58 PM CDT	Special Weather Statement	LZK	47 min
Aug 29, 3:16 PM CDT	Special Weather Statement	LZK	44 min
Aug 29, 3:32 PM CDT	Mesoscale Discussion	SPC	88 min
Aug 31, 2:49 PM CDT	Flash Flood Watch	LZK	60 hr
Sep 1, 1:49 PM CDT	Severe Thunderstorm Warning	LZK	41 min
Sep 1, 2:10 PM CDT	Mesoscale Discussion	SPC	65 min
Sep 1, 2:27 PM CDT	Tornado Warning	LZK	33 min
Sep 1, 2:55 PM CDT	Tornado Warning	LZK	50 min
Sep 1, 3:17 PM CDT	Tornado Watch	SPC	4 hr
Sep 1, 3:30 PM CDT	Tornado Warning	LZK	45 min
Sep 1, 3:48 PM CDT	Special Weather Statement	LZK	42 min
Sep 1, 4:30 PM CDT	Severe Thunderstorm Warning	LZK	45 min
Sep 1, 5:47 PM CDT	Mesoscale Discussion	SPC	88 min
Oct 20, 10:58 PM CDT	Dense Fog Advisory	LZK	11 hr
Oct 28, 10:17 AM CDT	River Flood Advisory	LZK	48 hr
Oct 28, 8:32 PM CDT	Areal Flood Warning	LZK	3 hr
Oct 30, 10:24 AM CDT	River Flood Warning	LZK	7 days
Nov 1, 3:42 AM CST	Freeze Warning	LZK	28 hr
Nov 14, 10:32 PM CST	Mesoscale Discussion	SPC	118 min
Nov 15, 12:51 AM CST	Special Weather Statement	LZK	39 min
Nov 15, 1:36 AM CST	Severe Thunderstorm Warning	LZK	24 min
Nov 21, 12:10 AM CST	Dense Fog Advisory	LZK	10 hr
Nov 21, 9:12 PM CST	Dense Fog Advisory	LZK	6 hr
Dec 19, 9:29 PM CST	Dense Fog Advisory	LZK	11 hr
Dec 21, 3:33 AM CST	Dense Fog Advisory	LZK	5 hr
Dec 23, 3:46 PM CST	Mesoscale Discussion	SPC	89 min
Dec 30, 3:56 AM CST	Flash Flood Watch	LZK	44 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	7
Severe Thunderstorm Watch	5
Tornado Watch	7
Mesoscale Discussion	31
Special Weather Statement	19
Flooding
Areal Flood Warning	2
Flash Flood Warning	5
River Flood Warning	10
Flash Flood Watch	8
River Flood Advisory	2
Heat
Excessive Heat Warning	1
Heat Advisory	7
Cold
Freeze Warning	2
Wind and dust
Wind Advisory	7
Fog and smoke
Dense Fog Advisory	15

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2019 2021

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.