Alert archive / Arkansas / Nevada County

Weather alerts in Nevada County, Arkansas, 2013

101 weather alerts in 2013, 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 2013. Tap one for its archive.

Alerts
101
Warnings
26
Watches
13
Advisories
39
Busiest month
January20 alerts
Busiest day
February 18, 20138 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 2 tornado warnings covering Nevada County in 2013 had a tornado report inside them.

Nevada County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings17853%367%18 min
Flash flood warnings10100%0

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Shreveport, LA: tornado warnings471274%3174%14 min
NWS Shreveport, LA: severe thunderstorm warnings22513042%37079%23 min
NWS Shreveport, LA: flash flood warnings16756%4340%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 6, 4:34 AM CSTDense Fog AdvisorySHV6 hr
Jan 8, 4:06 PM CSTFlash Flood WatchSHV48 hr
Jan 12, 1:25 PM CSTMesoscale DiscussionSPC3 hr
Jan 12, 5:20 PM CSTTornado WatchSPC7 hr
Jan 12, 6:18 PM CSTMesoscale DiscussionSPC117 min
Jan 12, 9:25 PM CSTMesoscale DiscussionSPC2 hr
Jan 12, 9:44 PM CSTSevere Thunderstorm WarningSHV61 min
Jan 13, 9:52 PM CSTFreezing Rain AdvisorySHV7 hr
Jan 14, 4:39 AM CSTWinter Weather AdvisorySHV7 hr
Jan 14, 4:00 PM CSTWinter Weather AdvisorySHV24 hr
Jan 15, 6:32 AM CSTMesoscale DiscussionSPC4 hr
Jan 15, 4:44 PM CSTWinter Weather AdvisorySHV17 hr
Jan 26, 9:42 PM CSTDense Fog AdvisorySHV11 hr
Jan 28, 3:21 AM CSTLake Wind AdvisorySHV43 hr
Jan 29, 4:58 PM CSTMesoscale DiscussionSPC92 min
Jan 29, 5:37 PM CSTTornado WatchSPC8 hr
Jan 29, 8:11 PM CSTMesoscale DiscussionSPC94 min
Jan 29, 8:19 PM CSTSevere Thunderstorm WarningSHV56 min
Jan 29, 9:14 PM CSTSevere Thunderstorm WarningSHV61 min
Jan 30, 1:28 AM CSTLake Wind AdvisorySHV17 hr
Feb 6, 4:26 AM CSTDense Fog AdvisorySHV6 hr
Feb 10, 4:18 AM CSTSevere Thunderstorm WatchSPC5 hr
Feb 17, 3:05 PM CSTLake Wind AdvisorySHV27 hr
Feb 18, 1:29 PM CSTMesoscale DiscussionSPC2 hr
Feb 18, 2:19 PM CSTSevere Thunderstorm WatchSPC7 hr
Feb 18, 3:50 PM CSTTornado WarningSHV25 min
Feb 18, 3:52 PM CSTMesoscale DiscussionSPC83 min
Feb 18, 4:06 PM CSTSevere Thunderstorm WarningSHV39 min
Feb 18, 4:48 PM CSTTornado WarningSHV27 min
Feb 18, 5:05 PM CSTSevere Thunderstorm WarningSHV40 min
Feb 18, 5:19 PM CSTSevere Thunderstorm WarningSHV26 min
Feb 21, 11:33 PM CSTDense Fog AdvisorySHV9 hr
Feb 24, 2:31 PM CSTLake Wind AdvisorySHV49 hr
Feb 25, 9:25 AM CSTMesoscale DiscussionSPC65 min
Feb 25, 1:42 PM CSTSevere Thunderstorm WarningSHV33 min
Feb 25, 1:45 PM CSTSevere Thunderstorm WarningSHV30 min
Feb 25, 1:59 PM CSTSevere Thunderstorm WarningSHV46 min
Feb 25, 2:15 PM CSTSevere Thunderstorm WarningSHV15 min
Mar 3, 10:40 AM CSTLake Wind AdvisorySHV31 hr
Mar 4, 9:40 PM CSTLake Wind AdvisorySHV20 hr
Mar 14, 2:19 PM CDTLake Wind AdvisorySHV28 hr
Mar 16, 4:00 AM CDTLake Wind AdvisorySHV12 hr
Mar 17, 10:58 PM CDTMesoscale DiscussionSPC3 hr
Mar 18, 7:24 AM CDTMesoscale DiscussionSPC3 hr
Mar 23, 3:15 PM CDTLake Wind AdvisorySHV29 hr
Mar 24, 6:54 AM CDTFreeze WarningSHV25 hr
Mar 25, 4:55 AM CDTFreeze WarningSHV27 hr
Mar 25, 4:55 AM CDTLake Wind AdvisorySHV14 hr
Mar 26, 9:28 PM CDTFreeze WarningSHV11 hr
Mar 31, 3:45 AM CDTSevere Thunderstorm WarningSHV45 min
Mar 31, 9:15 AM CDTSevere Thunderstorm WarningSHV60 min
Apr 6, 3:44 AM CDTLake Wind AdvisorySHV14 hr
Apr 9, 4:25 AM CDTLake Wind AdvisorySHV20 hr
Apr 10, 1:03 PM CDTMesoscale DiscussionSPC117 min
Apr 10, 1:20 PM CDTTornado WatchSPC10 hr
Apr 10, 3:01 PM CDTMesoscale DiscussionSPC119 min
Apr 10, 6:31 PM CDTSevere Thunderstorm WarningSHV44 min
Apr 16, 10:14 PM CDTLake Wind AdvisorySHV45 hr
May 2, 3:55 AM CDTLake Wind AdvisorySHV39 hr
May 3, 9:37 PM CDTLake Wind AdvisorySHV21 hr
May 17, 4:00 PM CDTMesoscale DiscussionSPC60 min
May 21, 1:50 PM CDTTornado WatchSPC8 hr
May 21, 3:18 PM CDTMesoscale DiscussionSPC87 min
May 21, 5:51 PM CDTSevere Thunderstorm WarningSHV54 min
May 21, 5:54 PM CDTMesoscale DiscussionSPC66 min
May 21, 6:23 PM CDTSevere Thunderstorm WarningSHV67 min
Jun 1, 9:53 AM CDTMesoscale DiscussionSPC2 hr
Jun 1, 6:30 PM CDTAreal Flood AdvisorySHV2 hr
Jun 1, 7:28 PM CDTAreal Flood AdvisorySHV2 hr
Jun 1, 10:12 PM CDTFlash Flood WarningSHV4 hr
Jun 19, 3:29 AM CDTDense Fog AdvisorySHV7 hr
Jul 23, 8:16 PM CDTMesoscale DiscussionSPC89 min
Jul 24, 1:28 AM CDTAreal Flood AdvisorySHV2 hr
Jul 26, 10:47 AM CDTFlash Flood WatchSHV11 hr
Jul 26, 3:37 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 26, 8:47 PM CDTSevere Thunderstorm WarningSHV43 min
Jul 26, 9:16 PM CDTSevere Thunderstorm WarningSHV44 min
Jul 26, 9:20 PM CDTMesoscale DiscussionSPC115 min
Aug 1, 10:18 AM CDTHeat AdvisorySHV34 hr
Aug 5, 6:45 AM CDTHeat AdvisorySHV12 hr
Aug 5, 7:49 PM CDTHeat AdvisorySHV3 days
Aug 12, 4:00 PM CDTMesoscale DiscussionSPC2 hr
Aug 13, 1:04 PM CDTMesoscale DiscussionSPC2 hr
Oct 15, 6:04 AM CDTFlash Flood WatchSHV28 hr
Oct 29, 3:51 PM CDTFlash Flood WatchSHV48 hr
Oct 31, 3:21 AM CDTAreal Flood WarningSHV3 hr
Oct 31, 4:45 AM CDTLake Wind AdvisorySHV13 hr
Nov 11, 3:43 PM CSTFreeze WarningSHV41 hr
Nov 11, 9:02 PM CSTLake Wind AdvisorySHV21 hr
Nov 23, 6:15 AM CSTWinter Storm WatchSHV24 hr
Nov 24, 6:07 AM CSTWinter Weather AdvisorySHV30 hr
Dec 2, 10:06 PM CSTDense Fog AdvisorySHV12 hr
Dec 4, 3:13 PM CSTIce Storm WarningSHV38 hr
Dec 6, 5:04 AM CSTWinter Weather AdvisorySHV11 hr
Dec 7, 4:09 PM CSTWinter Weather AdvisorySHV14 hr
Dec 9, 4:09 PM CSTWinter Weather AdvisorySHV8 hr
Dec 19, 3:06 PM CSTFlash Flood WatchSHV48 hr
Dec 20, 3:30 PM CSTLake Wind AdvisorySHV25 hr
Dec 20, 6:44 PM CSTMesoscale DiscussionSPC91 min
Dec 21, 2:31 AM CSTMesoscale DiscussionSPC2 hr
Dec 31, 9:13 AM CSTFreezing Fog AdvisorySHV98 min

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 archive20122014

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.