Alert archive / Arkansas / Marion County

Weather alerts in Marion County, Arkansas, 2020

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

Marion County and its neighbors

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

Alerts
114
Warnings
30
Watches
19
Advisories
20
Busiest month
May23 alerts
Busiest day
May 3, 20206 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 1 tornado warnings covering Marion County in 2020 had a tornado report inside them.

Marion County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings110%0
Severe thunderstorm warnings221341%6100%25 min
Flash flood warnings00

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Little Rock, AR: tornado warnings541180%3070%16 min
NWS Little Rock, AR: severe thunderstorm warnings37613664%29885%24 min
NWS Little Rock, AR: flash flood warnings1074360%10484%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.

IssuedProductOfficeLasted
Jan 9, 4:30 AM CSTFlash Flood WatchLZK49 hr
Jan 10, 4:55 PM CSTMesoscale DiscussionSPC2 hr
Jan 10, 5:34 PM CSTTornado WatchSPC11 hr
Jan 10, 7:30 PM CSTMesoscale DiscussionSPC2 hr
Jan 10, 8:46 PM CSTSevere Thunderstorm WarningLZK59 min
Jan 10, 9:44 PM CSTSevere Thunderstorm WarningLZK46 min
Jan 14, 4:01 AM CSTDense Fog AdvisoryLZK5 hr
Jan 14, 6:24 PM CSTDense Fog AdvisoryLZK15 hr
Jan 17, 2:46 AM CSTWinter Weather AdvisoryLZK9 hr
Jan 21, 11:10 AM CSTWinter Weather AdvisoryLZK49 hr
Jan 26, 10:52 PM CSTDense Fog AdvisoryLZK11 hr
Feb 6, 6:49 AM CSTSpecial Weather StatementLZK56 min
Feb 24, 12:20 PM CSTMesoscale DiscussionSPC115 min
Mar 2, 3:54 PM CSTMesoscale DiscussionSPC2 hr
Mar 2, 5:21 PM CSTTornado WatchSPC8 hr
Mar 2, 5:22 PM CSTSpecial Weather StatementLZK38 min
Mar 11, 4:27 AM CDTMesoscale DiscussionSPC2 hr
Mar 12, 2:31 PM CDTMesoscale DiscussionSPC89 min
Mar 12, 3:44 PM CDTTornado WatchSPC7 hr
Mar 12, 3:48 PM CDTSevere Thunderstorm WarningLZK27 min
Mar 12, 3:58 PM CDTSpecial Weather StatementLZK47 min
Mar 12, 5:07 PM CDTSevere Thunderstorm WarningLZK38 min
Mar 18, 2:54 PM CDTFlash Flood WatchLZK31 hr
Mar 19, 11:05 AM CDTMesoscale DiscussionSPC115 min
Mar 19, 2:24 PM CDTTornado WatchSPC8 hr
Mar 19, 6:42 PM CDTSevere Thunderstorm WarningLZK48 min
Mar 19, 7:10 PM CDTTornado WarningLZK50 min
Mar 24, 2:15 AM CDTMesoscale DiscussionSPC2 hr
Mar 28, 2:10 PM CDTTornado WatchSPC5 hr
Apr 8, 5:10 AM CDTDense Fog AdvisoryLZK5 hr
Apr 12, 3:17 AM CDTWind AdvisoryLZK28 hr
Apr 12, 4:44 PM CDTMesoscale DiscussionSPC2 hr
Apr 12, 5:59 PM CDTSevere Thunderstorm WatchSPC4 hr
Apr 12, 6:14 PM CDTMesoscale DiscussionSPC91 min
Apr 12, 7:22 PM CDTSpecial Weather StatementLZK53 min
Apr 12, 7:56 PM CDTMesoscale DiscussionSPC2 hr
Apr 13, 3:45 PM CDTFreeze WarningLZK17 hr
Apr 14, 2:38 PM CDTFreeze WarningLZK18 hr
Apr 17, 2:05 PM CDTFreeze WarningLZK19 hr
Apr 20, 1:33 AM CDTDense Fog AdvisoryLZK9 hr
Apr 24, 8:31 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 27, 7:59 PM CDTSpecial Weather StatementLZK31 min
Apr 28, 7:35 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 28, 8:42 PM CDTSevere Thunderstorm WarningLZK48 min
May 3, 10:34 AM CDTMesoscale DiscussionSPC86 min
May 3, 11:03 AM CDTSevere Thunderstorm WarningLZK42 min
May 3, 11:44 AM CDTSevere Thunderstorm WarningLZK46 min
May 3, 11:44 AM CDTSevere Thunderstorm WatchSPC7 hr
May 3, 11:45 AM CDTSpecial Weather StatementLZK45 min
May 3, 11:54 AM CDTSevere Thunderstorm WarningLZK51 min
May 4, 9:00 AM CDTMesoscale DiscussionSPC90 min
May 4, 10:38 AM CDTMesoscale DiscussionSPC97 min
May 4, 11:49 AM CDTSpecial Weather StatementLZK41 min
May 4, 12:34 PM CDTSpecial Weather StatementLZK41 min
May 4, 12:35 PM CDTSevere Thunderstorm WatchSPC5 hr
May 4, 1:04 PM CDTMesoscale DiscussionSPC86 min
May 8, 2:38 PM CDTFrost AdvisoryLZK17 hr
May 14, 1:41 PM CDTMesoscale DiscussionSPC2 hr
May 16, 4:45 PM CDTFlash Flood WatchLZK16 hr
May 22, 11:29 AM CDTSevere Thunderstorm WarningLZK46 min
May 22, 12:06 PM CDTSevere Thunderstorm WarningLZK39 min
May 24, 4:13 PM CDTSpecial Weather StatementLZK47 min
May 25, 3:17 AM CDTFlash Flood WatchLZK48 hr
May 25, 10:04 PM CDTSevere Thunderstorm WarningLZK41 min
May 25, 10:42 PM CDTSevere Thunderstorm WarningLZK48 min
May 27, 4:26 PM CDTSpecial Weather StatementLZK49 min
May 27, 5:47 PM CDTSpecial Weather StatementLZK43 min
Jun 4, 5:42 AM CDTSevere Thunderstorm WarningLZK63 min
Jun 4, 5:44 AM CDTMesoscale DiscussionSPC61 min
Jun 4, 6:01 AM CDTSevere Thunderstorm WarningLZK44 min
Jun 4, 6:28 AM CDTSevere Thunderstorm WarningLZK47 min
Jun 7, 2:50 AM CDTFlash Flood WatchLZK49 hr
Jun 21, 3:21 AM CDTDense Fog AdvisoryLZK6 hr
Jun 30, 2:22 PM CDTHeat AdvisoryLZK53 hr
Jul 1, 11:51 AM CDTSevere Thunderstorm WarningLZK39 min
Jul 1, 12:28 PM CDTSevere Thunderstorm WarningLZK37 min
Jul 2, 4:40 PM CDTSpecial Weather StatementLZK35 min
Jul 2, 4:44 PM CDTMesoscale DiscussionSPC2 hr
Jul 4, 4:42 PM CDTSpecial Weather StatementLZK48 min
Jul 9, 7:16 AM CDTMesoscale DiscussionSPC119 min
Jul 10, 9:19 PM CDTHeat AdvisoryLZK23 hr
Jul 16, 12:26 PM CDTMesoscale DiscussionSPC2 hr
Jul 22, 11:54 AM CDTMesoscale DiscussionSPC2 hr
Aug 2, 4:27 PM CDTSpecial Weather StatementLZK33 min
Aug 2, 5:24 PM CDTSpecial Weather StatementLZK36 min
Aug 9, 5:34 PM CDTMesoscale DiscussionSPC116 min
Aug 10, 4:50 PM CDTMesoscale DiscussionSPC85 min
Aug 11, 12:03 PM CDTSevere Thunderstorm WarningLZK30 min
Aug 11, 12:34 PM CDTMesoscale DiscussionSPC2 hr
Aug 15, 2:00 PM CDTMesoscale DiscussionSPC2 hr
Aug 29, 4:01 AM CDTFlash Flood WatchLZK27 hr
Aug 29, 11:40 AM CDTSpecial Weather StatementLZK50 min
Aug 29, 11:56 AM CDTMesoscale DiscussionSPC94 min
Aug 29, 11:59 AM CDTSevere Thunderstorm WarningLZK29 min
Aug 29, 8:47 PM CDTSpecial Weather StatementLZK43 min
Aug 31, 2:49 PM CDTFlash Flood WatchLZK60 hr
Sep 3, 3:11 AM CDTDense Fog AdvisoryLZK6 hr
Sep 24, 9:35 PM CDTDense Fog AdvisoryLZK9 hr
Sep 25, 8:07 AM CDTDense Fog AdvisoryLZK113 min
Oct 15, 3:52 AM CDTFrost AdvisoryLZK29 hr
Oct 16, 2:25 PM CDTRed Flag WarningLZK29 hr
Oct 17, 11:03 AM CDTWind AdvisoryLZK7 hr
Oct 20, 10:58 PM CDTDense Fog AdvisoryLZK11 hr
Oct 28, 11:19 AM CDTFlood WatchLZK26 hr
Oct 28, 8:21 PM CDTAreal Flood WarningLZK4 hr
Nov 1, 3:42 AM CSTFreeze WarningLZK28 hr
Nov 14, 5:14 PM CSTTornado WatchSPC8 hr
Nov 14, 7:34 PM CSTMesoscale DiscussionSPC86 min
Nov 14, 10:18 PM CSTSpecial Weather StatementLZK42 min
Nov 14, 10:34 PM CSTSevere Thunderstorm WarningLZK41 min
Nov 14, 10:58 PM CSTSevere Thunderstorm WarningLZK32 min
Nov 19, 1:08 PM CSTRed Flag WarningLZK5 hr
Nov 21, 9:12 PM CSTDense Fog AdvisoryLZK6 hr
Dec 12, 3:23 PM CSTWinter Weather AdvisoryLZK33 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 archive20192021

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.