Alert archive / Arkansas / Nevada County

Weather alerts in Nevada County, Arkansas, 2017

114 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Nevada County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
114
Warnings
16
Watches
15
Advisories
38
Busiest month
April23 alerts
Busiest day
April 26, 20175 alerts

Over time

By month

Warning verification

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

Nevada County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings7357%10%
Flash flood warnings220%4100%159 min

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Shreveport, LA: tornado warnings912770%6549%21 min
NWS Shreveport, LA: severe thunderstorm warnings25414344%47365%24 min
NWS Shreveport, LA: flash flood warnings453033%12984%248 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 1, 3:20 PM CSTDense Fog AdvisorySHV18 hr
Jan 2, 10:03 PM CSTDense Fog AdvisorySHV11 hr
Jan 3, 9:17 AM CSTDense Fog AdvisorySHV43 min
Jan 5, 3:21 PM CSTWinter Weather AdvisorySHV30 hr
Jan 6, 4:50 AM CSTHard Freeze WarningSHV28 hr
Jan 7, 4:14 AM CSTHard Freeze WarningSHV29 hr
Jan 9, 3:49 PM CSTLake Wind AdvisorySHV26 hr
Jan 11, 3:34 AM CSTLake Wind AdvisorySHV14 hr
Jan 15, 4:13 AM CSTDense Fog AdvisorySHV5 hr
Jan 16, 2:02 PM CSTMesoscale DiscussionSPC118 min
Jan 21, 2:33 PM CSTMesoscale DiscussionSPC2 hr
Jan 21, 2:51 PM CSTLake Wind AdvisorySHV34 hr
Jan 21, 3:41 PM CSTTornado WatchSPC7 hr
Jan 21, 5:32 PM CSTMesoscale DiscussionSPC118 min
Feb 6, 2:11 PM CSTLake Wind AdvisorySHV14 hr
Feb 10, 4:54 AM CSTLake Wind AdvisorySHV13 hr
Feb 28, 9:51 PM CSTLake Wind AdvisorySHV20 hr
Mar 1, 2:09 AM CSTMesoscale DiscussionSPC2 hr
Mar 7, 2:58 AM CSTMesoscale DiscussionSPC92 min
Mar 7, 3:37 AM CSTSevere Thunderstorm WatchSPC8 hr
Mar 7, 4:50 AM CSTSpecial Weather StatementSHV40 min
Mar 7, 5:28 AM CSTSpecial Weather StatementSHV62 min
Mar 23, 8:07 PM CDTLake Wind AdvisorySHV29 hr
Mar 24, 3:25 PM CDTMesoscale DiscussionSPC95 min
Mar 24, 6:33 PM CDTSpecial Weather StatementSHV42 min
Mar 24, 8:39 PM CDTMesoscale DiscussionSPC66 min
Mar 24, 9:14 PM CDTSevere Thunderstorm WatchSPC6 hr
Mar 27, 12:44 AM CDTMesoscale DiscussionSPC61 min
Mar 28, 3:49 PM CDTLake Wind AdvisorySHV27 hr
Mar 29, 4:17 PM CDTTornado WatchSPC8 hr
Mar 29, 7:34 PM CDTMesoscale DiscussionSPC86 min
Apr 4, 9:28 PM CDTMesoscale DiscussionSPC92 min
Apr 4, 10:00 PM CDTLake Wind AdvisorySHV21 hr
Apr 9, 4:14 AM CDTLake Wind AdvisorySHV16 hr
Apr 10, 2:26 PM CDTSevere Thunderstorm WatchSPC9 hr
Apr 10, 6:51 PM CDTMesoscale DiscussionSPC84 min
Apr 10, 9:35 PM CDTMesoscale DiscussionSPC85 min
Apr 21, 9:52 PM CDTLake Wind AdvisorySHV17 hr
Apr 21, 11:39 PM CDTMesoscale DiscussionSPC96 min
Apr 22, 12:30 AM CDTSevere Thunderstorm WarningSHV60 min
Apr 22, 12:41 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 26, 12:27 AM CDTLake Wind AdvisorySHV21 hr
Apr 26, 9:39 AM CDTMesoscale DiscussionSPC36 min
Apr 26, 10:08 AM CDTTornado WatchSPC7 hr
Apr 26, 1:05 PM CDTMesoscale DiscussionSPC85 min
Apr 26, 3:42 PM CDTSevere Thunderstorm WarningSHV48 min
Apr 28, 5:13 AM CDTFlash Flood WatchSHV47 hr
Apr 28, 1:15 PM CDTRiver Flood WarningLZK3 days
Apr 29, 5:23 PM CDTSevere Thunderstorm WarningSHV52 min
Apr 29, 9:38 PM CDTMesoscale DiscussionSPC67 min
Apr 29, 10:23 PM CDTSevere Thunderstorm WatchSPC8 hr
Apr 29, 11:03 PM CDTSpecial Weather StatementSHV27 min
Apr 29, 11:37 PM CDTMesoscale DiscussionSPC53 min
Apr 30, 4:19 AM CDTLake Wind AdvisorySHV15 hr
May 1, 3:50 AM CDTLake Wind AdvisorySHV11 hr
May 3, 3:54 AM CDTLake Wind AdvisorySHV39 hr
May 3, 12:34 PM CDTSevere Thunderstorm WatchSPC5 hr
May 3, 1:32 PM CDTFlash Flood WarningSHV3 hr
May 3, 4:05 PM CDTRiver Flood WarningLZK69 hr
May 3, 4:20 PM CDTFlash Flood WarningSHV3 hr
May 11, 2:43 PM CDTSevere Thunderstorm WatchSPC9 hr
May 11, 5:49 PM CDTMesoscale DiscussionSPC56 min
May 11, 7:47 PM CDTSpecial Weather StatementSHV13 min
May 12, 10:59 AM CDTMesoscale DiscussionSPC3 hr
May 12, 2:55 PM CDTSpecial Weather StatementSHV50 min
May 16, 9:39 PM CDTLake Wind AdvisorySHV21 hr
May 21, 9:01 AM CDTSpecial Weather StatementSHV29 min
May 24, 2:07 AM CDTLake Wind AdvisorySHV14 hr
May 26, 3:29 AM CDTLake Wind AdvisorySHV16 hr
May 28, 12:06 AM CDTSevere Thunderstorm WatchSPC5 hr
May 28, 2:05 AM CDTSevere Thunderstorm WarningSHV40 min
May 28, 2:46 AM CDTSpecial Weather StatementSHV44 min
May 28, 2:53 AM CDTMesoscale DiscussionSPC2 hr
May 28, 4:59 AM CDTMesoscale DiscussionSPC2 hr
Jun 23, 7:26 PM CDTMesoscale DiscussionSPC2 hr
Jun 23, 7:33 PM CDTSpecial Weather StatementSHV57 min
Jul 1, 3:26 PM CDTSevere Thunderstorm WarningSHV64 min
Jul 1, 3:37 PM CDTSevere Thunderstorm WarningSHV68 min
Jul 1, 4:11 PM CDTSevere Thunderstorm WarningSHV64 min
Jul 1, 4:16 PM CDTSpecial Weather StatementSHV44 min
Jul 4, 12:51 AM CDTMesoscale DiscussionSPC114 min
Jul 5, 4:21 AM CDTSpecial Weather StatementSHV54 min
Jul 5, 5:16 AM CDTSpecial Weather StatementSHV59 min
Jul 5, 6:14 AM CDTSpecial Weather StatementSHV61 min
Jul 6, 2:46 AM CDTAreal Flood AdvisorySHV119 min
Jul 6, 5:01 AM CDTAreal Flood AdvisorySHV59 min
Jul 14, 3:29 PM CDTSpecial Weather StatementSHV46 min
Jul 19, 2:40 AM CDTHeat AdvisorySHV4 days
Jul 22, 4:30 AM CDTHeat AdvisorySHV15 hr
Jul 23, 5:25 AM CDTHeat AdvisorySHV13 hr
Jul 25, 3:25 PM CDTHeat AdvisorySHV52 hr
Aug 6, 9:30 AM CDTSpecial Weather StatementSHV60 min
Aug 6, 10:30 AM CDTSpecial Weather StatementSHV30 min
Aug 12, 5:13 AM CDTFlash Flood WatchSHV29 hr
Aug 19, 2:42 AM CDTHeat AdvisorySHV40 hr
Aug 20, 6:08 PM CDTSpecial Weather StatementSHV52 min
Aug 20, 7:01 PM CDTSpecial Weather StatementSHV29 min
Aug 22, 2:06 PM CDTMesoscale DiscussionSPC2 hr
Sep 5, 3:10 PM CDTMesoscale DiscussionSPC65 min
Oct 21, 11:56 PM CDTSevere Thunderstorm WatchSPC7 hr
Oct 22, 1:44 AM CDTMesoscale DiscussionSPC91 min
Oct 22, 2:44 AM CDTSpecial Weather StatementSHV46 min
Oct 23, 2:29 PM CDTLake Wind AdvisorySHV29 hr
Oct 26, 9:23 PM CDTLake Wind AdvisorySHV18 hr
Oct 27, 3:52 AM CDTFreeze WarningSHV29 hr
Oct 28, 3:45 AM CDTFreeze WarningSHV29 hr
Nov 12, 11:46 PM CSTDense Fog AdvisorySHV6 hr
Nov 17, 3:23 AM CSTLake Wind AdvisorySHV42 hr
Dec 7, 3:03 AM CSTFreeze WarningSHV30 hr
Dec 13, 4:33 AM CSTLake Wind AdvisorySHV11 hr
Dec 21, 4:01 AM CSTDense Fog AdvisorySHV5 hr
Dec 21, 3:24 PM CSTFlash Flood WatchSHV30 hr
Dec 22, 12:52 PM CSTAreal Flood AdvisorySHV3 hr
Dec 22, 7:54 PM CSTLake Wind AdvisorySHV10 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 archive20162018

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.