Alert archive / Arkansas / Hempstead County

Weather alerts in Hempstead County, Arkansas, 2020

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

Hempstead County and its neighbors

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

Alerts
141
Warnings
37
Watches
20
Advisories
30
Busiest month
May28 alerts
Busiest day
May 16, 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.

2 of 3 tornado warnings covering Hempstead County in 2020 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 1 minutes after it went out.

Hempstead County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings3233%1100%1 min
Severe thunderstorm warnings221627%1090%20 min
Flash flood warnings8625%3100%61 min

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Shreveport, LA: tornado warnings772962%6763%14 min
NWS Shreveport, LA: severe thunderstorm warnings25218626%54079%24 min
NWS Shreveport, LA: flash flood warnings553733%11790%105 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, 4:11 AM CSTFlash Flood WatchSHV49 hr
Jan 9, 8:39 PM CSTLake Wind AdvisorySHV32 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, 10:03 PM CSTSpecial Weather StatementSHV57 min
Jan 10, 10:26 PM CSTFlash Flood WarningSHV3 hr
Jan 10, 10:40 PM CSTMesoscale DiscussionSPC2 hr
Jan 10, 11:05 PM CSTSpecial Weather StatementSHV55 min
Jan 14, 4:37 AM CSTDense Fog AdvisorySHV5 hr
Jan 14, 8:35 PM CSTDense Fog AdvisorySHV12 hr
Jan 21, 1:21 PM CSTWinter Weather AdvisorySHV26 hr
Jan 26, 11:10 PM CSTDense Fog AdvisorySHV11 hr
Feb 9, 3:56 PM CSTFlash Flood WatchSHV71 hr
Feb 9, 11:41 PM CSTSevere Thunderstorm WarningSHV28 min
Feb 12, 7:38 AM CSTFlash Flood WarningSHV3 hr
Feb 23, 1:30 PM CSTLake Wind AdvisorySHV29 hr
Feb 26, 2:04 AM CSTLake Wind AdvisorySHV16 hr
Mar 12, 3:44 PM CDTTornado WatchSPC7 hr
Mar 12, 9:23 PM CDTMesoscale DiscussionSPC97 min
Mar 17, 3:07 AM CDTDense Fog AdvisorySHV7 hr
Mar 19, 1:58 PM CDTMesoscale DiscussionSPC62 min
Mar 19, 2:24 PM CDTTornado WatchSPC8 hr
Mar 28, 12:14 PM CDTMesoscale DiscussionSPC2 hr
Mar 28, 1:05 PM CDTSpecial Weather StatementSHV40 min
Mar 28, 1:43 PM CDTSpecial Weather StatementSHV47 min
Apr 12, 2:45 AM CDTLake Wind AdvisorySHV21 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, 6:24 PM CDTSevere Thunderstorm WarningSHV51 min
Apr 12, 6:30 PM CDTSpecial Weather StatementSHV60 min
Apr 18, 8:27 PM CDTMesoscale DiscussionSPC2 hr
Apr 18, 9:28 PM CDTSpecial Weather StatementSHV62 min
Apr 19, 11:19 AM CDTMesoscale DiscussionSPC116 min
Apr 22, 2:19 AM CDTSevere Thunderstorm WarningSHV56 min
Apr 22, 3:48 AM CDTSpecial Weather StatementSHV42 min
Apr 22, 3:50 AM CDTLake Wind AdvisorySHV20 hr
Apr 22, 11:09 AM CDTSpecial Weather StatementSHV51 min
Apr 22, 6:39 PM CDTMesoscale DiscussionSPC66 min
Apr 22, 9:08 PM CDTMesoscale DiscussionSPC97 min
Apr 22, 9:22 PM CDTSevere Thunderstorm WarningSHV38 min
Apr 22, 10:00 PM CDTSevere Thunderstorm WarningSHV30 min
Apr 24, 4:49 PM CDTTornado WatchSPC7 hr
Apr 24, 7:19 PM CDTMesoscale DiscussionSPC101 min
Apr 24, 8:47 PM CDTSevere Thunderstorm WarningSHV43 min
Apr 28, 9:31 AM CDTSevere Thunderstorm WarningSHV59 min
Apr 28, 8:25 PM CDTSevere Thunderstorm WatchSPC9 hr
Apr 28, 10:25 PM CDTSevere Thunderstorm WarningSHV50 min
Apr 28, 11:01 PM CDTSevere Thunderstorm WarningSHV44 min
Apr 28, 11:22 PM CDTSevere Thunderstorm WarningSHV53 min
Apr 29, 3:21 PM CDTLake Wind AdvisorySHV4 hr
May 5, 5:56 AM CDTSevere Thunderstorm WarningSHV49 min
May 5, 6:45 AM CDTSpecial Weather StatementSHV60 min
May 8, 1:12 AM CDTLake Wind AdvisorySHV18 hr
May 8, 3:06 AM CDTSevere Thunderstorm WatchSPC7 hr
May 8, 4:05 AM CDTSevere Thunderstorm WarningSHV40 min
May 8, 4:37 AM CDTSevere Thunderstorm WarningSHV38 min
May 8, 5:14 AM CDTSevere Thunderstorm WarningSHV46 min
May 15, 6:45 PM CDTSpecial Weather StatementSHV45 min
May 16, 1:16 PM CDTMesoscale DiscussionSPC2 hr
May 16, 3:27 PM CDTTornado WatchSPC6 hr
May 16, 4:37 PM CDTFlash Flood WatchSHV14 hr
May 16, 5:31 PM CDTMesoscale DiscussionSPC59 min
May 16, 5:35 PM CDTTornado WarningSHV40 min
May 16, 5:58 PM CDTTornado WarningSHV47 min
May 16, 6:36 PM CDTFlash Flood WarningSHV3 hr
May 16, 6:45 PM CDTTornado WarningSHV18 min
May 16, 6:48 PM CDTFlash Flood WarningSHV117 min
May 21, 5:44 PM CDTSevere Thunderstorm WarningSHV35 min
May 22, 7:34 PM CDTSevere Thunderstorm WatchSPC8 hr
May 23, 4:41 AM CDTAreal Flood AdvisorySHV3 hr
May 23, 5:02 AM CDTSpecial Weather StatementSHV43 min
May 24, 6:46 PM CDTSpecial Weather StatementSHV59 min
May 25, 2:45 AM CDTFlash Flood WatchSHV36 hr
May 25, 1:50 PM CDTMesoscale DiscussionSPC85 min
May 25, 3:42 PM CDTSevere Thunderstorm WarningSHV48 min
May 25, 5:47 PM CDTSevere Thunderstorm WarningSHV43 min
May 28, 3:33 PM CDTSpecial Weather StatementSHV27 min
May 28, 4:11 PM CDTAreal Flood AdvisorySHV3 hr
Jun 4, 12:32 PM CDTMesoscale DiscussionSPC58 min
Jun 6, 12:10 AM CDTSpecial Weather StatementSHV65 min
Jun 6, 12:32 AM CDTSevere Thunderstorm WarningSHV58 min
Jun 9, 4:24 AM CDTLake Wind AdvisorySHV14 hr
Jun 9, 8:41 PM CDTMesoscale DiscussionSPC94 min
Jun 9, 8:59 PM CDTSpecial Weather StatementSHV46 min
Jun 10, 4:33 AM CDTLake Wind AdvisorySHV13 hr
Jun 21, 8:28 PM CDTSpecial Weather StatementSHV32 min
Jun 21, 8:45 PM CDTSevere Thunderstorm WarningSHV60 min
Jun 21, 9:47 PM CDTSpecial Weather StatementSHV43 min
Jun 21, 10:38 PM CDTSpecial Weather StatementSHV67 min
Jun 21, 10:43 PM CDTFlash Flood WarningSHV7 hr
Jun 21, 11:13 PM CDTSevere Thunderstorm WarningSHV62 min
Jun 22, 12:20 AM CDTSpecial Weather StatementSHV55 min
Jun 22, 12:29 AM CDTFlash Flood WarningSHV5 hr
Jun 23, 9:26 AM CDTSpecial Weather StatementSHV64 min
Jun 26, 4:39 PM CDTSpecial Weather StatementSHV51 min
Jun 28, 5:56 PM CDTSpecial Weather StatementSHV49 min
Jun 30, 1:26 PM CDTHeat AdvisorySHV54 hr
Jul 9, 10:46 AM CDTMesoscale DiscussionSPC119 min
Jul 10, 4:47 AM CDTHeat AdvisorySHV5 days
Jul 10, 2:09 PM CDTMesoscale DiscussionSPC2 hr
Jul 12, 1:17 AM CDTMesoscale DiscussionSPC118 min
Jul 14, 2:09 PM CDTHeat AdvisorySHV53 hr
Jul 30, 3:41 PM CDTMesoscale DiscussionSPC2 hr
Jul 30, 8:36 PM CDTSevere Thunderstorm WatchSPC3 hr
Jul 30, 10:24 PM CDTMesoscale DiscussionSPC96 min
Jul 30, 10:37 PM CDTSpecial Weather StatementSHV38 min
Aug 12, 3:01 AM CDTAreal Flood AdvisorySHV3 hr
Aug 12, 3:37 AM CDTSpecial Weather StatementSHV53 min
Aug 12, 3:45 AM CDTFlash Flood Warning Considerable damage threatSHV3 hr
Aug 12, 4:16 AM CDTFlood WatchSHV9 hr
Aug 12, 4:43 AM CDTSpecial Weather StatementSHV47 min
Aug 12, 5:44 AM CDTAreal Flood AdvisorySHV3 hr
Aug 12, 6:31 AM CDTFlash Flood Warning Considerable damage threatSHV5 hr
Aug 14, 3:02 AM CDTHeat AdvisorySHV64 hr
Aug 25, 2:49 PM CDTFlash Flood WatchSHV60 hr
Aug 25, 9:52 PM CDTTropical Storm WarningSHV45 hr
Aug 27, 3:02 PM CDTHeat AdvisorySHV52 hr
Aug 29, 11:45 AM CDTExcessive Heat WarningSHV7 hr
Aug 29, 3:32 PM CDTMesoscale DiscussionSPC88 min
Aug 29, 6:42 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 29, 10:19 PM CDTSevere Thunderstorm WarningSHV56 min
Aug 29, 10:52 PM CDTSevere Thunderstorm WarningSHV53 min
Aug 29, 11:33 PM CDTMesoscale DiscussionSPC87 min
Aug 31, 1:39 PM CDTFlash Flood WatchSHV61 hr
Sep 10, 3:27 PM CDTAreal Flood AdvisorySHV3 hr
Sep 26, 5:04 AM CDTDense Fog AdvisorySHV5 hr
Sep 28, 1:43 AM CDTLake Wind AdvisorySHV17 hr
Oct 29, 3:03 AM CDTLake Wind AdvisorySHV15 hr
Nov 21, 1:26 AM CSTDense Fog AdvisorySHV8 hr
Nov 24, 8:29 PM CSTSevere Thunderstorm WatchSPC6 hr
Nov 24, 11:07 PM CSTMesoscale DiscussionSPC83 min
Nov 24, 11:15 PM CSTSpecial Weather StatementSHV60 min
Nov 25, 12:15 AM CSTSpecial Weather StatementSHV60 min
Nov 29, 2:11 PM CSTFreeze WarningSHV19 hr
Nov 30, 1:47 PM CSTFreeze WarningSHV19 hr
Dec 19, 9:38 PM CSTDense Fog AdvisorySHV11 hr
Dec 23, 3:07 AM CSTLake Wind AdvisorySHV38 hr
Dec 23, 3:46 PM CSTMesoscale DiscussionSPC89 min
Dec 30, 3:12 AM CSTFlash Flood WatchSHV45 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.