Alert archive / Iowa / Benton County

Weather alerts in Benton County, Iowa, 2013

144 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Benton County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts
144
Warnings
35
Watches
25
Advisories
32
Busiest month
May33 alerts
Busiest day
May 29, 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.

Benton County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings201620%1675%27 min
Flash flood warnings5420%1100%2 min

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Quad Cities, IA: tornado warnings23674%1765%10 min
NWS Quad Cities, IA: severe thunderstorm warnings1319131%31679%20 min
NWS Quad Cities, IA: flash flood warnings332039%7189%128 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 10, 3:17 PM CSTDense Fog AdvisoryDVN27 hr
Jan 19, 3:41 AM CSTWind AdvisoryDVN20 hr
Jan 20, 3:06 PM CSTWind Chill AdvisoryDVN24 hr
Jan 21, 3:09 PM CSTWind Chill AdvisoryDVN16 hr
Jan 23, 2:01 PM CSTWind Chill AdvisoryDVN13 hr
Jan 26, 3:41 AM CSTWinter Storm WatchDVN24 hr
Jan 26, 9:05 PM CSTFreezing Rain AdvisoryDVN24 hr
Jan 27, 6:40 AM CSTMesoscale DiscussionSPC5 hr
Jan 28, 7:52 AM CSTDense Fog AdvisoryDVN22 hr
Jan 28, 9:44 PM CSTSevere Thunderstorm WarningDVN46 min
Jan 28, 9:59 PM CSTMesoscale DiscussionSPC2 hr
Jan 29, 3:39 AM CSTWinter Storm WatchDVN12 hr
Jan 29, 3:18 PM CSTWinter Storm WarningDVN27 hr
Jan 31, 3:32 AM CSTWind Chill AdvisoryDVN32 hr
Feb 9, 11:53 PM CSTMesoscale DiscussionSPC5 hr
Feb 10, 7:28 PM CSTWind AdvisoryDVN20 hr
Feb 19, 2:20 PM CSTWinter Storm WatchDVN25 hr
Feb 20, 3:17 PM CSTWinter Storm WarningDVN48 hr
Feb 25, 3:22 AM CSTWinter Storm WarningDVN42 hr
Feb 25, 3:30 PM CSTWinter Weather AdvisoryDVN45 hr
Mar 2, 3:39 PM CSTWinter Storm WatchDVN37 hr
Mar 3, 3:03 PM CSTWinter Weather AdvisoryDVN13 hr
Mar 4, 4:13 AM CSTWinter Storm WarningDVN38 hr
Mar 9, 3:40 PM CSTWinter Storm WatchDVN11 hr
Mar 10, 4:06 AM CDTWinter Weather AdvisoryDVN17 hr
Mar 10, 6:37 AM CDTDense Fog AdvisoryDVN21 hr
Mar 18, 6:34 AM CDTWinter Weather AdvisoryDVN6 hr
Mar 31, 12:56 AM CDTDense Fog AdvisoryDVN8 hr
Apr 9, 2:12 AM CDTSpecial Weather StatementDVN2 hr
Apr 9, 2:33 AM CDTSevere Thunderstorm WarningDVN42 min
Apr 9, 2:54 PM CDTFlash Flood WatchDVN32 hr
Apr 9, 7:37 PM CDTMesoscale DiscussionSPC83 min
Apr 16, 3:32 PM CDTFlash Flood WatchDVN45 hr
Apr 17, 8:37 PM CDTFlash Flood WarningDVN8 hr
Apr 17, 10:04 PM CDTFlash Flood WarningDVN6 hr
Apr 18, 3:46 AM CDTAreal Flood WarningDVN18 hr
Apr 29, 10:21 PM CDTSevere Thunderstorm WatchSPC5 hr
May 2, 3:24 PM CDTWinter Weather AdvisoryDVN19 hr
May 9, 4:32 PM CDTSpecial Weather StatementDVN118 min
May 11, 3:04 PM CDTFrost AdvisoryDVN16 hr
May 19, 4:34 AM CDTSpecial Weather StatementDVN41 min
May 19, 11:30 AM CDTMesoscale DiscussionSPC90 min
May 19, 1:10 PM CDTTornado WatchSPC8 hr
May 19, 2:59 PM CDTTornado WatchSPC8 hr
May 19, 7:13 PM CDTMesoscale DiscussionSPC62 min
May 19, 8:10 PM CDTTornado WatchSPC6 hr
May 19, 10:27 PM CDTSevere Thunderstorm WarningDVN48 min
May 19, 10:48 PM CDTSevere Thunderstorm WarningDVN57 min
May 20, 6:35 PM CDTSevere Thunderstorm WatchSPC5 hr
May 20, 9:33 PM CDTMesoscale DiscussionSPC57 min
May 22, 10:34 AM CDTRiver Flood WarningDVN4 days
May 22, 7:42 PM CDTSpecial Weather StatementDVN48 min
May 26, 3:06 AM CDTFlash Flood WatchDVN56 hr
May 26, 4:52 PM CDTFlash Flood WarningDVN9 hr
May 26, 10:09 PM CDTRiver Flood WarningDVN7 days
May 28, 1:14 AM CDTSpecial Weather StatementDVN91 min
May 28, 3:36 AM CDTSpecial Weather StatementDVN54 min
May 28, 1:37 PM CDTMesoscale DiscussionSPC113 min
May 29, 2:39 PM CDTMesoscale DiscussionSPC66 min
May 29, 2:56 PM CDTSevere Thunderstorm WatchSPC7 hr
May 29, 3:18 PM CDTFlash Flood WatchDVN54 hr
May 29, 5:01 PM CDTSevere Thunderstorm WarningDVN44 min
May 29, 5:25 PM CDTSpecial Weather StatementDVN50 min
May 29, 5:54 PM CDTMesoscale DiscussionSPC66 min
May 29, 6:07 PM CDTFlash Flood WarningDVN6 hr
May 29, 6:58 PM CDTSevere Thunderstorm WarningDVN47 min
May 29, 9:00 PM CDTMesoscale DiscussionSPC60 min
May 30, 12:32 PM CDTTornado WatchSPC7 hr
May 30, 3:59 PM CDTSevere Thunderstorm WarningDVN46 min
May 30, 4:27 PM CDTSevere Thunderstorm WarningDVN63 min
Jun 10, 4:15 AM CDTDense Fog AdvisoryDVN4 hr
Jun 12, 10:52 AM CDTSpecial Weather StatementDVN2 hr
Jun 12, 12:49 PM CDTMesoscale DiscussionSPC56 min
Jun 12, 12:56 PM CDTSpecial Weather StatementDVN109 min
Jun 12, 1:49 PM CDTTornado Watch PDSSPC9 hr
Jun 12, 4:06 PM CDTMesoscale DiscussionSPC54 min
Jun 12, 6:40 PM CDTMesoscale DiscussionSPC95 min
Jun 12, 8:53 PM CDTMesoscale DiscussionSPC37 min
Jun 15, 10:54 AM CDTMesoscale DiscussionSPC66 min
Jun 21, 8:23 AM CDTSpecial Weather StatementDVN52 min
Jun 21, 8:38 AM CDTSevere Thunderstorm WatchSPC4 hr
Jun 21, 9:04 AM CDTSevere Thunderstorm WarningDVN56 min
Jun 21, 9:42 AM CDTSpecial Weather StatementDVN93 min
Jun 21, 9:42 AM CDTSevere Thunderstorm WarningDVN63 min
Jun 22, 6:24 AM CDTSevere Thunderstorm WarningDVN51 min
Jun 23, 3:57 AM CDTFlash Flood WatchDVN3 days
Jun 24, 12:14 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 24, 2:24 PM CDTSevere Thunderstorm WarningDVN51 min
Jun 25, 9:44 PM CDTMesoscale DiscussionSPC91 min
Jun 25, 9:49 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 25, 11:19 PM CDTSevere Thunderstorm WarningDVN56 min
Jun 26, 2:18 AM CDTFlash Flood WarningDVN6 hr
Jun 26, 2:30 AM CDTSevere Thunderstorm WarningDVN45 min
Jun 26, 3:32 AM CDTMesoscale DiscussionSPC88 min
Jun 26, 8:10 AM CDTAreal Flood WarningDVN9 hr
Jun 26, 5:46 PM CDTSpecial Weather StatementDVN59 min
Jul 17, 3:02 AM CDTHeat AdvisoryDVN64 hr
Jul 22, 3:43 AM CDTSpecial Weather StatementDVN3 hr
Jul 22, 6:40 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 22, 6:51 PM CDTSpecial Weather StatementDVN54 min
Jul 22, 7:01 PM CDTSevere Thunderstorm WarningDVN44 min
Jul 22, 7:28 PM CDTSevere Thunderstorm WarningDVN47 min
Jul 22, 7:39 PM CDTSevere Thunderstorm WarningDVN51 min
Jul 22, 7:42 PM CDTMesoscale DiscussionSPC63 min
Jul 25, 6:43 PM CDTSpecial Weather StatementDVN62 min
Jul 25, 7:04 PM CDTMesoscale DiscussionSPC116 min
Jul 25, 8:04 PM CDTSpecial Weather StatementDVN56 min
Jul 25, 8:06 PM CDTMesoscale DiscussionSPC54 min
Aug 5, 8:11 AM CDTSpecial Weather StatementDVN64 min
Aug 5, 7:24 PM CDTSpecial Weather StatementDVN66 min
Aug 6, 5:25 AM CDTDense Fog AdvisoryDVN4 hr
Aug 6, 5:58 PM CDTMesoscale DiscussionSPC2 hr
Aug 6, 9:37 PM CDTMesoscale DiscussionSPC113 min
Aug 7, 1:55 AM CDTSevere Thunderstorm WarningDVN35 min
Aug 23, 2:23 AM CDTDense Fog AdvisoryDVN7 hr
Aug 25, 4:09 AM CDTHeat AdvisoryDVN6 days
Sep 19, 2:48 PM CDTSpecial Weather StatementDVN87 min
Sep 19, 4:29 PM CDTMesoscale DiscussionSPC91 min
Sep 19, 4:40 PM CDTSevere Thunderstorm WatchSPC6 hr
Sep 19, 4:49 PM CDTSpecial Weather StatementDVN41 min
Sep 19, 5:30 PM CDTSevere Thunderstorm WarningDVN60 min
Oct 3, 8:16 PM CDTSevere Thunderstorm WatchSPC9 hr
Oct 3, 11:42 PM CDTMesoscale DiscussionSPC93 min
Oct 4, 2:06 AM CDTMesoscale DiscussionSPC84 min
Oct 4, 3:39 AM CDTSpecial Weather StatementDVN81 min
Oct 4, 4:27 AM CDTSpecial Weather StatementDVN93 min
Oct 4, 4:35 AM CDTMesoscale DiscussionSPC85 min
Oct 4, 7:53 AM CDTSpecial Weather StatementDVN52 min
Oct 4, 8:44 AM CDTSevere Thunderstorm WarningDVN46 min
Oct 4, 10:29 PM CDTMesoscale DiscussionSPC91 min
Oct 19, 3:48 AM CDTFrost AdvisoryDVN27 hr
Oct 21, 3:15 PM CDTFreeze WarningDVN17 hr
Oct 30, 5:20 AM CDTDense Fog AdvisoryDVN8 hr
Dec 3, 3:23 AM CSTDense Fog AdvisoryDVN38 hr
Dec 7, 3:31 PM CSTWinter Weather AdvisoryDVN32 hr
Dec 10, 3:30 PM CSTWinter Weather AdvisoryDVN19 hr
Dec 11, 3:59 AM CSTWind Chill AdvisoryDVN26 hr
Dec 19, 3:50 AM CSTFreezing Rain AdvisoryDVN35 hr
Dec 19, 2:56 PM CSTWinter Storm WatchDVN24 hr
Dec 20, 3:02 PM CSTWinter Storm WarningDVN44 hr
Dec 21, 10:41 PM CSTMesoscale DiscussionSPC5 hr
Dec 22, 3:12 PM CSTWind Chill AdvisoryDVN45 hr
Dec 28, 3:14 PM CSTWind Chill AdvisoryDVN42 hr
Dec 30, 3:10 PM CSTWinter Weather AdvisoryDVN51 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 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.