Alert archive / Arkansas / Polk County

Weather alerts in Polk County, Arkansas, 2015

107 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Polk County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
107
Warnings
42
Watches
13
Advisories
0
Busiest month
May44 alerts
Busiest day
May 11, 20159 alerts

Over time

By month

Warning verification

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

0 of 5 tornado warnings covering Polk County in 2015 had a tornado report inside them.

Polk County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings50100%0
Severe thunderstorm warnings13377%683%40 min
Flash flood warnings211052%6100%107 min

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Little Rock, AR: tornado warnings40685%1471%17 min
NWS Little Rock, AR: severe thunderstorm warnings38012068%24888%24 min
NWS Little Rock, AR: flash flood warnings1384964%7683%108 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 3, 1:01 AM CSTFlash Flood WarningLZK3 hr
Jan 3, 3:59 AM CSTFlash Flood WarningLZK2 hr
Feb 16, 2:57 AM CSTMesoscale DiscussionSPC6 hr
Mar 24, 5:53 PM CDTMesoscale DiscussionSPC3 hr
Mar 25, 9:21 PM CDTSevere Thunderstorm WatchSPC8 hr
Mar 25, 11:39 PM CDTMesoscale DiscussionSPC96 min
Mar 26, 1:11 AM CDTSevere Thunderstorm WarningLZK64 min
Mar 26, 2:17 AM CDTMesoscale DiscussionSPC58 min
Apr 1, 1:16 AM CDTMesoscale DiscussionSPC89 min
Apr 1, 4:59 PM CDTSevere Thunderstorm WarningLZK46 min
Apr 1, 5:14 PM CDTMesoscale DiscussionSPC91 min
Apr 1, 6:34 PM CDTSevere Thunderstorm WarningLZK26 min
Apr 9, 2:15 PM CDTMesoscale DiscussionSPC2 hr
Apr 9, 3:17 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 9, 6:11 PM CDTMesoscale DiscussionSPC64 min
Apr 9, 7:04 PM CDTSpecial Weather StatementSHV26 min
Apr 9, 7:11 PM CDTSpecial Weather StatementTSA34 min
Apr 19, 12:43 PM CDTMesoscale DiscussionSPC2 hr
Apr 19, 1:42 PM CDTSevere Thunderstorm WatchSPC6 hr
May 8, 10:43 PM CDTMesoscale DiscussionSPC92 min
May 9, 1:24 AM CDTSpecial Weather StatementLZK46 min
May 9, 9:41 AM CDTMesoscale DiscussionSPC2 hr
May 9, 1:19 PM CDTFlash Flood WarningLZK4 hr
May 9, 1:58 PM CDTMesoscale DiscussionSPC92 min
May 10, 6:44 AM CDTMesoscale DiscussionSPC2 hr
May 10, 8:56 AM CDTMesoscale DiscussionSPC2 hr
May 10, 9:28 AM CDTTornado WatchSPC6 hr
May 10, 11:25 AM CDTMesoscale DiscussionSPC2 hr
May 10, 7:08 PM CDTMesoscale DiscussionSPC97 min
May 10, 7:34 PM CDTTornado WatchSPC4 hr
May 10, 8:07 PM CDTSpecial Weather StatementLZK28 min
May 10, 8:23 PM CDTSevere Thunderstorm WarningLZK37 min
May 10, 8:55 PM CDTFlash Flood WarningLZK3 hr
May 10, 9:54 PM CDTTornado WarningLZK36 min
May 10, 10:35 PM CDTSevere Thunderstorm WarningLZK40 min
May 10, 11:10 PM CDTSevere Thunderstorm WarningLZK50 min
May 10, 11:59 PM CDTFlash Flood WarningLZK3 hr
May 17, 3:21 AM CDTFlash Flood WarningLZK5 hr
May 17, 3:29 AM CDTFlash Flood WarningLZK5 hr
May 17, 5:32 AM CDTFlash Flood WarningLZK3 hr
May 17, 8:31 AM CDTFlash Flood WarningLZK3 hr
May 20, 2:56 AM CDTFlash Flood WarningLZK3 hr
May 20, 5:59 AM CDTFlash Flood WarningLZK3 hr
May 23, 1:00 AM CDTFlash Flood WarningLZK3 hr
May 24, 9:15 AM CDTSpecial Weather StatementLZK30 min
May 24, 12:05 PM CDTMesoscale DiscussionSPC115 min
May 24, 12:34 PM CDTTornado WatchSPC6 hr
May 24, 2:23 PM CDTFlash Flood WarningLZK3 hr
May 24, 2:56 PM CDTSevere Thunderstorm WarningLZK49 min
May 25, 2:35 PM CDTMesoscale DiscussionSPC55 min
May 25, 2:52 PM CDTTornado WatchSPC8 hr
May 25, 5:08 PM CDTSevere Thunderstorm WarningLZK37 min
May 25, 5:15 PM CDTMesoscale DiscussionSPC90 min
May 25, 5:31 PM CDTSevere Thunderstorm WarningLZK59 min
May 25, 5:54 PM CDTTornado WarningLZK36 min
May 25, 7:16 PM CDTFlash Flood WarningLZK6 hr
May 28, 10:37 AM CDTMesoscale DiscussionSPC53 min
May 28, 11:04 AM CDTFlash Flood WarningLZK3 hr
May 28, 11:08 AM CDTSpecial Weather StatementLZK47 min
May 29, 12:33 PM CDTMesoscale DiscussionSPC87 min
May 29, 2:09 PM CDTTornado WatchSPC5 hr
May 29, 3:36 PM CDTFlash Flood WarningLZK4 hr
May 29, 4:48 PM CDTMesoscale DiscussionSPC87 min
Jun 17, 12:08 PM CDTMesoscale DiscussionSPC2 hr
Jun 17, 4:12 PM CDTSpecial Weather StatementLZK43 min
Jun 18, 11:37 AM CDTSpecial Weather StatementLZK18 min
Jun 18, 11:50 AM CDTSevere Thunderstorm WarningLZK40 min
Jun 26, 3:16 PM CDTMesoscale DiscussionSPC89 min
Jun 26, 3:31 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 26, 6:28 PM CDTMesoscale DiscussionSPC92 min
Jul 8, 1:58 PM CDTMesoscale DiscussionSPC92 min
Jul 21, 7:39 PM CDTMesoscale DiscussionSPC96 min
Jul 25, 5:02 PM CDTSpecial Weather StatementSHV43 min
Jul 30, 2:14 PM CDTSpecial Weather StatementLZK46 min
Jul 30, 3:45 PM CDTFlash Flood WarningLZK2 hr
Aug 6, 6:19 PM CDTSevere Thunderstorm WarningLZK26 min
Aug 6, 7:15 PM CDTSpecial Weather StatementLZK30 min
Aug 10, 8:09 PM CDTSpecial Weather StatementLZK36 min
Aug 22, 12:53 PM CDTMesoscale DiscussionSPC2 hr
Aug 24, 3:32 AM CDTSpecial Weather StatementLZK28 min
Aug 30, 7:58 PM CDTSpecial Weather StatementLZK32 min
Sep 8, 3:27 PM CDTSpecial Weather StatementLZK48 min
Nov 5, 3:32 PM CSTMesoscale DiscussionSPC88 min
Nov 5, 4:00 PM CSTTornado WatchSPC5 hr
Nov 5, 5:55 PM CSTMesoscale DiscussionSPC2 hr
Nov 5, 7:47 PM CSTSpecial Weather StatementLZK43 min
Nov 5, 8:14 PM CSTMesoscale DiscussionSPC61 min
Nov 17, 4:35 AM CSTMesoscale DiscussionSPC115 min
Nov 17, 6:27 AM CSTSevere Thunderstorm WatchSPC6 hr
Dec 13, 2:05 AM CSTFlash Flood WarningLZK6 hr
Dec 13, 7:49 AM CSTFlash Flood WarningLZK6 hr
Dec 13, 4:51 PM CSTAreal Flood WarningLZK6 hr
Dec 23, 4:39 AM CSTMesoscale DiscussionSPC2 hr
Dec 23, 6:07 AM CSTSevere Thunderstorm WarningLZK38 min
Dec 23, 6:20 AM CSTTornado WatchSPC7 hr
Dec 23, 6:23 AM CSTSevere Thunderstorm WarningLZK37 min
Dec 26, 12:02 PM CSTMesoscale DiscussionSPC58 min
Dec 26, 12:35 PM CSTTornado WatchSPC9 hr
Dec 26, 3:51 PM CSTMesoscale DiscussionSPC114 min
Dec 26, 11:27 PM CSTMesoscale DiscussionSPC2 hr
Dec 27, 3:49 AM CSTTornado WarningLZK26 min
Dec 27, 4:13 AM CSTTornado WarningLZK32 min
Dec 27, 10:44 AM CSTFlash Flood WarningLZK3 hr
Dec 27, 11:18 AM CSTTornado WarningLZK42 min
Dec 27, 1:08 PM CSTFlash Flood WarningLZK15 hr
Dec 28, 3:47 AM CSTAreal Flood WarningLZK24 hr
Dec 29, 5:11 AM CSTAreal Flood WarningLZK12 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 archive20142016

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.