Alert archive / Arkansas / Clark County

Weather alerts in Clark County, Arkansas, 2018

137 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Clark County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
137
Warnings
52
Watches
22
Advisories
18
Busiest month
July26 alerts
Busiest day
December 1, 20188 alerts

Over time

By month

Warning verification

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

Clark County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings201240%5100%18 min
Flash flood warnings8363%4100%241 min

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Little Rock, AR: tornado warnings45687%1377%9 min
NWS Little Rock, AR: severe thunderstorm warnings40618754%37784%21 min
NWS Little Rock, AR: flash flood warnings1395362%10994%89 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.

IssuedProductOfficeLasted
Jan 11, 1:49 PM CSTLake Wind AdvisoryLZK22 hr
Jan 14, 8:45 PM CSTWind Chill AdvisoryLZK43 hr
Jan 15, 4:12 AM CSTWinter Storm WarningLZK28 hr
Jan 21, 6:25 PM CSTMesoscale DiscussionSPC2 hr
Jan 21, 9:35 PM CSTMesoscale DiscussionSPC115 min
Jan 21, 9:59 PM CSTTornado WatchSPC6 hr
Jan 21, 11:02 PM CSTSevere Thunderstorm WarningLZK43 min
Jan 22, 1:16 AM CSTMesoscale DiscussionSPC119 min
Feb 17, 10:45 PM CSTDense Fog AdvisoryLZK10 hr
Feb 19, 2:45 PM CSTFlood WatchLZK5 days
Feb 20, 9:31 AM CSTRiver Flood WarningLZK6 days
Feb 20, 9:34 AM CSTRiver Flood WarningLZK6 days
Feb 21, 11:59 AM CSTAreal Flood WarningLZK6 hr
Feb 21, 2:48 PM CSTAreal Flood WarningLZK15 hr
Feb 21, 5:53 PM CSTAreal Flood WarningLZK6 hr
Feb 22, 8:54 PM CSTFlash Flood WarningLZK3 hr
Feb 23, 1:58 AM CSTAreal Flood WarningLZK6 hr
Feb 23, 7:39 AM CSTAreal Flood WarningLZK6 hr
Feb 23, 1:17 PM CSTAreal Flood WarningLZK18 hr
Feb 24, 10:26 AM CSTMesoscale DiscussionSPC64 min
Feb 24, 11:01 AM CSTTornado WatchSPC8 hr
Feb 24, 1:39 PM CSTMesoscale DiscussionSPC2 hr
Feb 24, 2:06 PM CSTSevere Thunderstorm WarningLZK39 min
Feb 24, 2:42 PM CSTSevere Thunderstorm WarningLZK48 min
Feb 24, 3:26 PM CSTFlash Flood WarningLZK5 hr
Feb 24, 3:33 PM CSTSevere Thunderstorm WarningLZK42 min
Feb 24, 7:51 PM CSTAreal Flood WarningLZK3 hr
Feb 24, 8:00 PM CSTFlash Flood WarningLZK3 hr
Feb 24, 9:55 PM CSTAreal Flood WarningLZK6 hr
Feb 26, 2:51 PM CSTFlood WatchLZK69 hr
Feb 27, 8:43 AM CSTRiver Flood WarningLZK4 days
Feb 28, 9:59 AM CSTRiver Flood WarningLZK4 days
Feb 28, 8:10 PM CSTFlash Flood WarningLZK12 hr
Feb 28, 11:53 PM CSTFlash Flood WarningLZK8 hr
Mar 1, 7:58 AM CSTAreal Flood WarningLZK9 hr
Mar 10, 3:11 PM CSTMesoscale DiscussionSPC3 hr
Mar 10, 3:43 PM CSTSevere Thunderstorm WatchSPC6 hr
Mar 10, 5:57 PM CSTMesoscale DiscussionSPC2 hr
Mar 10, 8:06 PM CSTMesoscale DiscussionSPC114 min
Mar 19, 4:26 AM CDTMesoscale DiscussionSPC2 hr
Mar 19, 5:58 AM CDTSevere Thunderstorm WarningLZK32 min
Mar 26, 3:41 AM CDTFlood WatchLZK66 hr
Apr 3, 12:57 PM CDTMesoscale DiscussionSPC2 hr
Apr 3, 1:33 PM CDTTornado WatchSPC7 hr
Apr 3, 3:34 PM CDTMesoscale DiscussionSPC86 min
Apr 6, 12:09 PM CDTRiver Flood WarningLZK64 hr
Apr 7, 3:17 AM CDTFreeze WarningLZK30 hr
Apr 13, 12:41 PM CDTMesoscale DiscussionSPC2 hr
Apr 13, 1:50 PM CDTTornado Watch PDSSPC8 hr
Apr 13, 5:53 PM CDTMesoscale DiscussionSPC97 min
Apr 13, 8:13 PM CDTSevere Thunderstorm WarningLZK62 min
Apr 13, 8:54 PM CDTMesoscale DiscussionSPC66 min
Apr 13, 9:13 PM CDTSevere Thunderstorm WarningLZK62 min
Apr 13, 9:53 PM CDTTornado WatchSPC8 hr
Apr 14, 10:53 AM CDTRiver Flood WarningLZK25 hr
Apr 15, 3:26 AM CDTFreeze WarningLZK30 hr
May 3, 12:35 PM CDTMesoscale DiscussionSPC85 min
May 3, 1:44 PM CDTSevere Thunderstorm WatchSPC4 hr
May 3, 3:45 PM CDTMesoscale DiscussionSPC60 min
May 3, 4:52 PM CDTMesoscale DiscussionSPC53 min
May 16, 11:21 AM CDTMesoscale DiscussionSPC2 hr
May 16, 5:01 PM CDTSpecial Weather StatementLZK44 min
May 23, 5:53 PM CDTSpecial Weather StatementLZK52 min
May 26, 2:26 PM CDTSevere Thunderstorm WarningLZK36 min
Jun 2, 1:33 PM CDTMesoscale DiscussionSPC117 min
Jun 8, 4:06 PM CDTSevere Thunderstorm WarningLZK24 min
Jun 8, 6:29 PM CDTSpecial Weather StatementLZK31 min
Jun 13, 4:42 PM CDTSevere Thunderstorm WarningLZK48 min
Jun 13, 5:19 PM CDTSevere Thunderstorm WarningLZK41 min
Jun 22, 11:48 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 23, 4:45 AM CDTMesoscale DiscussionSPC90 min
Jun 23, 4:48 AM CDTSpecial Weather StatementLZK42 min
Jun 24, 5:28 AM CDTSevere Thunderstorm WatchSPC4 hr
Jun 24, 7:37 AM CDTMesoscale DiscussionSPC113 min
Jun 24, 4:53 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 24, 7:48 PM CDTMesoscale DiscussionSPC117 min
Jun 27, 2:42 PM CDTHeat AdvisoryLZK3 days
Jul 2, 3:59 PM CDTSevere Thunderstorm WarningLZK31 min
Jul 2, 4:26 PM CDTSevere Thunderstorm WarningLZK23 min
Jul 3, 1:58 PM CDTSevere Thunderstorm WarningLZK32 min
Jul 3, 2:29 PM CDTSpecial Weather StatementLZK31 min
Jul 5, 3:41 PM CDTSpecial Weather StatementLZK34 min
Jul 5, 3:47 PM CDTSevere Thunderstorm WarningLZK28 min
Jul 5, 4:55 PM CDTSpecial Weather StatementLZK35 min
Jul 11, 5:49 PM CDTSevere Thunderstorm WarningLZK26 min
Jul 12, 4:38 PM CDTSpecial Weather StatementLZK52 min
Jul 13, 3:21 AM CDTHeat AdvisoryLZK17 hr
Jul 14, 4:04 AM CDTHeat AdvisoryLZK16 hr
Jul 15, 3:33 AM CDTHeat AdvisoryLZK15 hr
Jul 17, 6:34 PM CDTSpecial Weather StatementLZK26 min
Jul 18, 2:43 PM CDTHeat AdvisoryLZK30 hr
Jul 18, 2:43 PM CDTHeat AdvisoryLZK37 hr
Jul 19, 8:02 PM CDTMesoscale DiscussionSPC118 min
Jul 19, 8:54 PM CDTSevere Thunderstorm WatchSPC114 min
Jul 20, 3:37 AM CDTExcessive Heat WarningLZK17 hr
Jul 20, 3:04 PM CDTHeat AdvisoryLZK28 hr
Jul 20, 9:08 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 21, 2:33 AM CDTSevere Thunderstorm WatchSPC4 hr
Jul 21, 3:41 AM CDTMesoscale DiscussionSPC2 hr
Jul 29, 2:30 AM CDTDense Fog AdvisoryLZK7 hr
Jul 30, 9:50 AM CDTMesoscale DiscussionSPC115 min
Jul 30, 10:39 AM CDTSpecial Weather StatementLZK36 min
Jul 31, 7:40 AM CDTSpecial Weather StatementLZK35 min
Aug 8, 3:50 PM CDTSpecial Weather StatementLZK55 min
Aug 8, 4:20 PM CDTSevere Thunderstorm WarningLZK40 min
Aug 9, 8:54 AM CDTFlash Flood WarningLZK3 hr
Aug 16, 2:27 PM CDTHeat AdvisoryLZK5 hr
Aug 19, 8:16 PM CDTSpecial Weather StatementLZK59 min
Aug 19, 8:46 PM CDTSevere Thunderstorm WarningLZK29 min
Sep 4, 2:25 PM CDTFlash Flood WatchLZK4 days
Sep 8, 4:05 PM CDTFlash Flood WarningLZK86 min
Sep 20, 2:15 PM CDTFlash Flood WatchLZK65 hr
Sep 21, 6:01 PM CDTFlash Flood WarningLZK3 hr
Oct 9, 6:22 PM CDTMesoscale DiscussionSPC83 min
Oct 31, 3:55 PM CDTMesoscale DiscussionSPC95 min
Oct 31, 4:11 PM CDTTornado WatchSPC8 hr
Oct 31, 7:26 PM CDTAreal Flood WarningLZK6 hr
Nov 1, 6:22 AM CDTRiver Flood WarningLZK25 hr
Nov 6, 12:49 AM CSTDense Fog AdvisoryLZK11 hr
Nov 8, 3:56 AM CSTFreeze WatchLZK24 hr
Nov 8, 8:33 PM CSTFreeze WarningLZK36 hr
Nov 23, 10:10 PM CSTDense Fog AdvisoryLZK13 hr
Nov 30, 3:34 PM CSTMesoscale DiscussionSPC116 min
Nov 30, 6:17 PM CSTMesoscale DiscussionSPC58 min
Nov 30, 6:40 PM CSTTornado WatchSPC7 hr
Nov 30, 9:02 PM CSTMesoscale DiscussionSPC58 min
Nov 30, 11:20 PM CSTMesoscale DiscussionSPC85 min
Dec 1, 12:58 AM CSTMesoscale DiscussionSPC2 hr
Dec 1, 1:31 AM CSTSevere Thunderstorm WarningLZK44 min
Dec 1, 1:58 AM CSTTornado WatchSPC5 hr
Dec 1, 2:05 AM CSTSevere Thunderstorm WarningLZK40 min
Dec 8, 10:48 AM CSTRiver Flood WarningLZK25 hr
Dec 14, 8:23 PM CSTRiver Flood WarningLZK23 hr
Dec 16, 8:22 PM CSTDense Fog AdvisoryLZK16 hr
Dec 17, 9:47 PM CSTDense Fog AdvisoryLZK12 hr
Dec 18, 9:42 PM CSTDense Fog AdvisoryLZK11 hr
Dec 26, 1:11 PM CSTWind AdvisoryLZK23 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20172019

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.