Alert archive / Arkansas / Columbia County

Weather alerts in Columbia County, Arkansas, 2016

166 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Columbia County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts: 166
Warnings: 49
Watches: 17
Advisories: 45
Busiest month: March58 alerts
Busiest day: April 30, 201610 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 Columbia County in 2016 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 9 minutes after it went out.

Columbia County, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	7	3	57%	3	100%	9 min
Severe thunderstorm warnings	15	6	60%	11	36%	31 min
Flash flood warnings	11	8	27%	5	100%	133 min

Each office's whole area, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Shreveport, LA: tornado warnings	78	11	86%	20	80%	14 min
NWS Shreveport, LA: severe thunderstorm warnings	256	125	51%	404	72%	22 min
NWS Shreveport, LA: flash flood warnings	82	58	29%	248	92%	275 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 8, 2:08 AM CST	Dense Fog Advisory	SHV	10 hr
Jan 9, 7:42 PM CST	River Flood Warning	SHV	7 days
Jan 21, 3:50 PM CST	Lake Wind Advisory	SHV	26 hr
Jan 21, 4:11 PM CST	Winter Weather Advisory	SHV	16 hr
Jan 24, 6:59 AM CST	River Flood Warning	SHV	8 days
Jan 30, 4:28 AM CST	Lake Wind Advisory	SHV	36 hr
Feb 7, 3:25 PM CST	Lake Wind Advisory	SHV	27 hr
Feb 9, 3:29 AM CST	Lake Wind Advisory	SHV	13 hr
Feb 15, 12:44 PM CST	River Flood Warning	SHV	18 days
Feb 16, 10:59 AM CST	Lake Wind Advisory	SHV	7 hr
Feb 22, 9:55 PM CST	Wind Advisory	SHV	29 hr
Feb 23, 4:27 PM CST	Lake Wind Advisory	SHV	24 hr
Mar 2, 10:18 PM CST	Lake Wind Advisory	SHV	20 hr
Mar 7, 4:53 AM CST	Flash Flood Watch	SHV	6 days
Mar 8, 12:41 PM CST	Tornado Watch	SPC	5 hr
Mar 8, 3:11 PM CST	Mesoscale Discussion	SPC	94 min
Mar 8, 4:02 PM CST	Areal Flood Advisory	SHV	3 hr
Mar 8, 4:55 PM CST	Flash Flood Warning	SHV	15 hr
Mar 8, 6:36 PM CST	Flash Flood Warning	SHV	16 hr
Mar 8, 9:14 PM CST	River Flood Warning	SHV	17 days
Mar 8, 10:38 PM CST	Severe Thunderstorm Warning	SHV	40 min
Mar 8, 11:16 PM CST	Flash Flood Warning	SHV	11 hr
Mar 9, 10:13 AM CST	Flash Flood Warning	SHV	3 hr
Mar 9, 10:58 AM CST	Flash Flood Warning	SHV	4 hr
Mar 9, 1:15 PM CST	Flash Flood Warning	SHV	23 hr
Mar 9, 2:52 PM CST	Flash Flood Warning	SHV	21 hr
Mar 12, 2:21 PM CST	Special Weather Statement	SHV	39 min
Mar 12, 2:43 PM CST	Severe Thunderstorm Warning	SHV	32 min
Mar 13, 1:01 PM CDT	Mesoscale Discussion	SPC	89 min
Mar 13, 2:10 PM CDT	Tornado Watch	SPC	5 hr
Mar 13, 3:19 PM CDT	Mesoscale Discussion	SPC	86 min
Mar 13, 5:58 PM CDT	Mesoscale Discussion	SPC	92 min
Mar 13, 6:21 PM CDT	Severe Thunderstorm Warning	SHV	39 min
Mar 13, 6:41 PM CDT	Mesoscale Discussion	SPC	94 min
Mar 13, 7:02 PM CDT	Severe Thunderstorm Warning	SHV	44 min
Mar 13, 7:11 PM CDT	Tornado Watch	SPC	6 hr
Mar 15, 4:43 AM CDT	Lake Wind Advisory	SHV	14 hr
Mar 17, 9:37 AM CDT	Mesoscale Discussion	SPC	83 min
Mar 17, 10:35 AM CDT	Special Weather Statement	SHV	40 min
Mar 17, 10:41 AM CDT	Severe Thunderstorm Warning	SHV	49 min
Mar 17, 10:55 AM CDT	Severe Thunderstorm Warning	SHV	42 min
Mar 17, 4:43 PM CDT	Special Weather Statement	SHV	47 min
Mar 17, 10:16 PM CDT	Special Weather Statement	SHV	59 min
Mar 18, 9:51 AM CDT	Mesoscale Discussion	SPC	84 min
Mar 18, 1:16 PM CDT	Mesoscale Discussion	SPC	59 min
Mar 18, 1:35 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Mar 18, 3:07 PM CDT	Severe Thunderstorm Warning	SHV	68 min
Mar 18, 3:47 PM CDT	Mesoscale Discussion	SPC	118 min
Mar 18, 7:06 PM CDT	Mesoscale Discussion	SPC	54 min
Mar 20, 4:50 AM CDT	Freeze Warning	SHV	28 hr
Mar 20, 4:50 AM CDT	Lake Wind Advisory	SHV	12 hr
Mar 21, 2:30 PM CDT	Lake Wind Advisory	SHV	59 hr
Mar 22, 2:49 PM CDT	Lake Wind Advisory	SHV	34 hr
Mar 24, 2:45 AM CDT	Special Weather Statement	SHV	60 min
Mar 24, 2:57 AM CDT	Severe Thunderstorm Warning	SHV	48 min
Mar 24, 3:45 AM CDT	Severe Thunderstorm Warning	SHV	60 min
Mar 24, 3:55 AM CDT	Lake Wind Advisory	SHV	12 hr
Mar 29, 3:28 PM CDT	Flash Flood Watch	SHV	52 hr
Mar 30, 11:07 AM CDT	Lake Wind Advisory	SHV	11 hr
Mar 30, 2:07 PM CDT	Mesoscale Discussion	SPC	83 min
Mar 30, 2:31 PM CDT	Tornado Watch	SPC	7 hr
Mar 30, 5:06 PM CDT	Mesoscale Discussion	SPC	84 min
Mar 30, 5:54 PM CDT	Special Weather Statement	SHV	66 min
Mar 30, 6:13 PM CDT	Severe Thunderstorm Warning	SHV	62 min
Mar 30, 6:15 PM CDT	Mesoscale Discussion	SPC	90 min
Mar 30, 6:21 PM CDT	Tornado Warning	SHV	39 min
Mar 30, 7:10 PM CDT	Tornado Warning	SHV	50 min
Mar 30, 8:12 PM CDT	Areal Flood Advisory	SHV	3 hr
Mar 30, 8:51 PM CDT	River Flood Warning	SHV	10 days
Mar 30, 9:40 PM CDT	Special Weather Statement	SHV	35 min
Apr 6, 4:32 AM CDT	Lake Wind Advisory	SHV	14 hr
Apr 9, 8:48 PM CDT	Lake Wind Advisory	SHV	25 hr
Apr 11, 11:48 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 11, 12:31 PM CDT	Special Weather Statement	SHV	29 min
Apr 11, 12:40 PM CDT	Tornado Warning	SHV	50 min
Apr 11, 1:05 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 11, 1:16 PM CDT	Special Weather Statement	SHV	44 min
Apr 11, 1:26 PM CDT	Tornado Warning	SHV	49 min
Apr 11, 3:42 PM CDT	Mesoscale Discussion	SPC	93 min
Apr 11, 5:22 PM CDT	Flash Flood Warning	SHV	6 hr
Apr 11, 6:09 PM CDT	Mesoscale Discussion	SPC	66 min
Apr 13, 7:49 AM CDT	River Flood Warning	SHV	27 days
Apr 20, 2:18 AM CDT	Flash Flood Watch	SHV	34 hr
Apr 26, 10:21 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Apr 27, 1:35 AM CDT	Mesoscale Discussion	SPC	115 min
Apr 28, 4:08 PM CDT	Flash Flood Watch	SHV	51 hr
Apr 29, 1:58 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 29, 9:46 AM CDT	Mesoscale Discussion	SPC	89 min
Apr 29, 12:51 PM CDT	Mesoscale Discussion	SPC	114 min
Apr 29, 1:43 PM CDT	Tornado Watch	SPC	8 hr
Apr 29, 5:42 PM CDT	Mesoscale Discussion	SPC	93 min
Apr 29, 8:56 PM CDT	Mesoscale Discussion	SPC	94 min
Apr 29, 9:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 29, 11:32 PM CDT	Flash Flood Warning	SHV	8 hr
Apr 29, 11:42 PM CDT	Mesoscale Discussion	SPC	93 min
Apr 30, 12:25 AM CDT	Tornado Warning	SHV	50 min
Apr 30, 12:58 AM CDT	Tornado Warning	SHV	47 min
Apr 30, 1:27 AM CDT	Flash Flood Warning	SHV	5 hr
Apr 30, 2:12 AM CDT	Special Weather Statement	SHV	48 min
Apr 30, 2:44 AM CDT	Tornado Warning	SHV	61 min
Apr 30, 6:01 AM CDT	Areal Flood Warning	SHV	6 hr
May 2, 12:43 AM CDT	Special Weather Statement	SHV	47 min
May 2, 1:28 AM CDT	Severe Thunderstorm Warning	SHV	47 min
May 2, 3:17 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 8, 3:17 PM CDT	Lake Wind Advisory	SHV	28 hr
May 9, 7:23 PM CDT	Tornado Watch	SPC	8 hr
May 9, 8:01 PM CDT	Mesoscale Discussion	SPC	89 min
May 9, 11:15 PM CDT	Mesoscale Discussion	SPC	90 min
May 9, 11:27 PM CDT	Severe Thunderstorm Warning	SHV	63 min
May 10, 12:27 AM CDT	Areal Flood Advisory	SHV	4 hr
May 10, 12:29 AM CDT	Severe Thunderstorm Warning	SHV	61 min
May 27, 4:41 AM CDT	Lake Wind Advisory	SHV	16 hr
May 30, 2:28 PM CDT	Special Weather Statement	SHV	47 min
Jun 13, 8:19 PM CDT	River Flood Warning	SHV	10 days
Jun 14, 6:21 AM CDT	Special Weather Statement	SHV	39 min
Jun 14, 6:46 AM CDT	Areal Flood Advisory	SHV	3 hr
Jun 14, 8:11 AM CDT	Special Weather Statement	SHV	49 min
Jun 14, 9:05 AM CDT	Areal Flood Advisory	SHV	3 hr
Jun 14, 3:36 PM CDT	Heat Advisory	SHV	4 days
Jun 17, 1:30 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 2, 3:48 PM CDT	Heat Advisory	SHV	5 days
Jul 7, 3:36 PM CDT	Heat Advisory	SHV	27 hr
Jul 14, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 14, 6:10 PM CDT	Severe Thunderstorm Warning	SHV	65 min
Jul 14, 6:41 PM CDT	Severe Thunderstorm Warning	SHV	64 min
Jul 17, 3:31 PM CDT	Heat Advisory	SHV	6 days
Jul 23, 2:42 PM CDT	Special Weather Statement	SHV	48 min
Jul 23, 2:49 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 24, 3:33 AM CDT	Heat Advisory	SHV	15 hr
Jul 28, 9:10 AM CDT	Areal Flood Advisory	SHV	3 hr
Jul 28, 1:10 PM CDT	Areal Flood Warning	SHV	2 hr
Aug 1, 3:56 AM CDT	Heat Advisory	SHV	39 hr
Aug 2, 2:56 PM CDT	Heat Advisory	SHV	10 days
Aug 4, 1:50 AM CDT	Excessive Heat Warning	SHV	62 hr
Aug 6, 1:13 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 7, 2:04 PM CDT	Mesoscale Discussion	SPC	116 min
Aug 7, 7:21 PM CDT	Special Weather Statement	SHV	39 min
Aug 12, 3:22 AM CDT	Heat Advisory	SHV	16 hr
Aug 16, 9:41 AM CDT	Areal Flood Advisory	SHV	3 hr
Aug 16, 10:25 AM CDT	River Flood Warning	SHV	13 days
Aug 16, 10:46 AM CDT	Flash Flood Warning	SHV	3 hr
Aug 20, 4:00 PM CDT	Special Weather Statement	SHV	45 min
Aug 25, 3:52 PM CDT	Areal Flood Advisory	SHV	3 hr
Sep 17, 5:43 PM CDT	Special Weather Statement	SHV	47 min
Oct 13, 3:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Nov 18, 2:46 PM CST	Lake Wind Advisory	SHV	7 hr
Nov 19, 3:08 AM CST	Freeze Warning	SHV	30 hr
Nov 27, 3:05 PM CST	Lake Wind Advisory	SHV	26 hr
Nov 27, 9:17 PM CST	Lake Wind Advisory	SHV	20 hr
Nov 28, 7:40 AM CST	Mesoscale Discussion	SPC	3 hr
Nov 28, 11:08 AM CST	Tornado Watch	SPC	6 hr
Nov 28, 11:19 AM CST	Special Weather Statement	SHV	41 min
Nov 28, 12:02 PM CST	Special Weather Statement	SHV	28 min
Nov 28, 12:32 PM CST	Special Weather Statement	SHV	43 min
Nov 28, 1:16 PM CST	Special Weather Statement	SHV	44 min
Dec 13, 4:24 AM CST	Dense Fog Advisory	SHV	6 hr
Dec 16, 3:57 AM CST	Lake Wind Advisory	SHV	60 hr
Dec 17, 6:44 PM CST	Mesoscale Discussion	SPC	3 hr
Dec 18, 3:53 AM CST	Hard Freeze Warning	SHV	29 hr
Dec 19, 3:52 PM CST	Hard Freeze Warning	SHV	16 hr
Dec 26, 3:52 PM CST	Special Weather Statement	SHV	38 min
Dec 26, 8:40 PM CST	Areal Flood Advisory	SHV	65 min
Dec 26, 9:45 PM CST	Areal Flood Advisory	SHV	2 hr
Dec 26, 11:33 PM CST	Areal Flood Advisory	SHV	117 min
Dec 27, 1:41 AM CST	Areal Flood Advisory	SHV	4 hr
Dec 29, 7:46 AM CST	River Flood Warning	SHV	8 days

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	15
Tornado Warning	7
Severe Thunderstorm Watch	6
Tornado Watch	7
Mesoscale Discussion	32
Special Weather Statement	23
Flooding
Areal Flood Warning	2
Flash Flood Warning	11
River Flood Warning	9
Flash Flood Watch	4
Areal Flood Advisory	12
Winter
Winter Weather Advisory	1
Heat
Excessive Heat Warning	1
Heat Advisory	8
Cold
Freeze Warning	2
Hard Freeze Warning	2
Wind and dust
Lake Wind Advisory	21
Wind Advisory	1
Fog and smoke
Dense Fog Advisory	2

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2015 2017

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.