Alert archive / Iowa / Jones County

Weather alerts in Jones County, Iowa, 2018

166 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Jones County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
166
Warnings
39
Watches
23
Advisories
41
Busiest month
June24 alerts
Busiest day
June 10, 20188 alerts

Over time

By month

Warning verification

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

5 of 5 tornado warnings covering Jones County in 2018 had a tornado report inside them; 1 of 3 tornado reports fell inside a warning, on average 1 minutes after it went out.

Jones County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings550%333%1 min
Severe thunderstorm warnings13746%333%0 min
Flash flood warnings220%0

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Quad Cities, IA: tornado warnings471470%3259%8 min
NWS Quad Cities, IA: severe thunderstorm warnings1369232%24975%22 min
NWS Quad Cities, IA: flash flood warnings291934%3979%73 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 2, 2:50 PM CSTWind Chill AdvisoryDVN43 hr
Jan 2, 9:18 PM CSTSpecial Weather StatementDVN117 min
Jan 4, 3:09 PM CSTWind Chill AdvisoryDVN19 hr
Jan 6, 2:50 AM CSTWind Chill AdvisoryDVN6 hr
Jan 10, 2:57 PM CSTDense Fog AdvisoryDVN8 hr
Jan 11, 3:07 AM CSTWinter Weather AdvisoryDVN17 hr
Jan 11, 9:36 AM CSTMesoscale DiscussionSPC4 hr
Jan 11, 10:36 AM CSTSpecial Weather StatementDVN114 min
Jan 11, 12:00 PM CSTSpecial Weather StatementDVN2 hr
Jan 14, 2:45 PM CSTWind Chill AdvisoryDVN44 hr
Jan 14, 2:45 PM CSTWinter Weather AdvisoryDVN21 hr
Jan 14, 8:19 PM CSTSpecial Weather StatementDVN86 min
Jan 21, 4:01 PM CSTDense Fog AdvisoryDVN14 hr
Feb 4, 1:53 PM CSTWinter Weather AdvisoryDVN32 hr
Feb 5, 11:36 AM CSTMesoscale DiscussionSPC6 hr
Feb 7, 1:54 PM CSTWinter Storm WatchDVN13 hr
Feb 8, 2:59 AM CSTWinter Storm WarningDVN30 hr
Feb 8, 9:07 PM CSTMesoscale DiscussionSPC6 hr
Feb 9, 3:09 PM CSTWinter Weather AdvisoryDVN18 hr
Feb 14, 5:42 PM CSTDense Fog AdvisoryDVN20 hr
Feb 18, 2:28 AM CSTDense Fog AdvisoryDVN8 hr
Feb 19, 1:39 PM CSTDense Fog AdvisoryDVN13 hr
Feb 20, 9:02 AM CSTSpecial Weather StatementDVN43 min
Feb 20, 9:37 AM CSTFlood WatchDVN6 hr
Feb 22, 3:23 AM CSTWinter Weather AdvisoryDVN9 hr
Mar 5, 1:48 AM CSTSpecial Weather StatementDVN87 min
Mar 5, 3:16 AM CSTSpecial Weather StatementDVN89 min
Mar 5, 4:16 AM CSTSpecial Weather StatementDVN89 min
Mar 5, 5:48 AM CSTSpecial Weather StatementDVN87 min
Mar 5, 6:50 AM CSTWinter Weather AdvisoryDVN17 hr
Mar 5, 7:10 AM CSTSpecial Weather StatementDVN95 min
Mar 6, 5:51 AM CSTSpecial Weather StatementDVN84 min
Mar 6, 6:51 AM CSTSpecial Weather StatementDVN114 min
Mar 16, 3:10 AM CDTWinter Weather AdvisoryDVN32 hr
Mar 16, 8:29 PM CDTSpecial Weather StatementDVN91 min
Mar 16, 9:33 PM CDTSpecial Weather StatementDVN57 min
Mar 22, 3:45 AM CDTWinter Storm WatchDVN24 hr
Mar 23, 3:30 AM CDTWinter Storm WarningDVN40 hr
Mar 23, 9:27 PM CDTWinter Storm WarningDVN22 hr
Mar 31, 4:52 AM CDTSpecial Weather StatementDVN38 min
Mar 31, 5:15 AM CDTHigh Wind WarningDVN79 min
Mar 31, 6:13 AM CDTWind AdvisoryDVN10 hr
Apr 2, 3:10 PM CDTWinter Weather AdvisoryDVN28 hr
Apr 5, 10:11 AM CDTSpecial Weather StatementDVN94 min
Apr 7, 3:08 PM CDTWinter Weather AdvisoryDVN43 hr
Apr 13, 5:51 PM CDTWind AdvisoryDVN25 hr
Apr 14, 3:51 AM CDTWinter Weather AdvisoryDVN39 hr
Apr 17, 4:07 AM CDTWinter Weather AdvisoryDVN45 hr
Apr 17, 3:02 PM CDTWinter Storm WarningDVN34 hr
Apr 27, 2:50 PM CDTRed Flag WarningDVN5 hr
May 2, 1:33 PM CDTMesoscale DiscussionSPC117 min
May 2, 3:56 PM CDTSevere Thunderstorm WatchSPC9 hr
May 2, 7:21 PM CDTMesoscale DiscussionSPC84 min
May 12, 1:04 AM CDTMesoscale DiscussionSPC116 min
May 14, 7:14 AM CDTSpecial Weather StatementDVN31 min
May 14, 7:21 AM CDTSevere Thunderstorm WarningDVN24 min
May 20, 3:09 AM CDTSpecial Weather StatementDVN36 min
May 20, 3:43 AM CDTSpecial Weather StatementDVN32 min
May 20, 3:44 AM CDTSpecial Weather StatementDVN31 min
May 20, 5:26 AM CDTSpecial Weather StatementDVN34 min
May 25, 8:57 PM CDTSpecial Weather StatementDVN63 min
May 29, 11:10 PM CDTSpecial Weather StatementDVN65 min
Jun 9, 9:32 AM CDTSpecial Weather StatementDVN43 min
Jun 9, 3:01 PM CDTFlash Flood WatchDVN16 hr
Jun 9, 3:52 PM CDTMesoscale DiscussionSPC83 min
Jun 9, 6:30 PM CDTMesoscale DiscussionSPC2 hr
Jun 9, 7:43 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 9, 8:27 PM CDTRiver Flood WatchDVN13 hr
Jun 9, 9:45 PM CDTSevere Thunderstorm WarningDVN60 min
Jun 9, 10:17 PM CDTMesoscale DiscussionSPC118 min
Jun 9, 10:42 PM CDTSevere Thunderstorm WarningDVN48 min
Jun 9, 11:16 PM CDTSevere Thunderstorm WarningDVN44 min
Jun 9, 11:44 PM CDTMesoscale DiscussionSPC2 hr
Jun 10, 12:25 AM CDTRiver Flood WarningDVN59 hr
Jun 10, 7:50 PM CDTRiver Flood WatchDVN13 hr
Jun 11, 9:04 AM CDTRiver Flood WarningDVN7 days
Jun 12, 6:31 PM CDTMesoscale DiscussionSPC2 hr
Jun 15, 3:25 AM CDTHeat AdvisoryDVN4 days
Jun 20, 3:04 PM CDTTornado WatchSPC4 hr
Jun 20, 4:33 PM CDTSevere Thunderstorm WarningDVN42 min
Jun 20, 5:13 PM CDTMesoscale DiscussionSPC2 hr
Jun 21, 3:47 AM CDTFlash Flood WatchDVN23 hr
Jun 21, 12:11 PM CDTSpecial Weather StatementDVN49 min
Jun 26, 1:31 PM CDTMesoscale DiscussionSPC89 min
Jun 27, 3:11 PM CDTHeat AdvisoryDVN24 hr
Jun 28, 3:31 PM CDTExcessive Heat WarningDVN54 hr
Jun 30, 7:15 PM CDTMesoscale DiscussionSPC90 min
Jun 30, 10:06 PM CDTFlash Flood WatchDVN5 hr
Jul 3, 3:48 PM CDTHeat AdvisoryDVN28 hr
Jul 4, 6:21 PM CDTSpecial Weather StatementDVN54 min
Jul 13, 3:37 AM CDTHeat AdvisoryDVN15 hr
Jul 13, 5:58 PM CDTSevere Thunderstorm WarningDVN47 min
Jul 13, 6:23 PM CDTMesoscale DiscussionSPC2 hr
Jul 19, 3:22 PM CDTSpecial Weather StatementDVN53 min
Jul 19, 4:05 PM CDTSevere Thunderstorm WarningDVN25 min
Jul 19, 4:50 PM CDTSevere Thunderstorm WarningDVN25 min
Jul 19, 5:18 PM CDTMesoscale DiscussionSPC57 min
Jul 30, 5:05 PM CDTSpecial Weather StatementDVN25 min
Aug 5, 5:07 PM CDTSevere Thunderstorm WarningDVN38 min
Aug 5, 5:44 PM CDTMesoscale DiscussionSPC2 hr
Aug 5, 6:10 PM CDTSevere Thunderstorm WarningDVN50 min
Aug 5, 10:20 PM CDTSevere Thunderstorm WarningDVN55 min
Aug 7, 1:28 PM CDTSpecial Weather StatementDVN17 min
Aug 8, 4:07 AM CDTDense Fog AdvisoryDVN5 hr
Aug 15, 4:20 PM CDTSpecial Weather StatementDVN115 min
Aug 16, 3:00 AM CDTDense Fog AdvisoryDVN6 hr
Aug 16, 6:07 PM CDTTornado WarningDVN16 min
Aug 20, 5:27 PM CDTSpecial Weather StatementDVN93 min
Aug 25, 4:03 AM CDTDense Fog AdvisoryDVN6 hr
Aug 28, 9:08 AM CDTFlash Flood WatchDVN20 hr
Aug 28, 12:14 PM CDTMesoscale DiscussionSPC2 hr
Aug 28, 5:06 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 28, 6:24 PM CDTSpecial Weather StatementDVN36 min
Aug 28, 6:37 PM CDTSevere Thunderstorm WarningDVN38 min
Sep 1, 3:44 AM CDTFlash Flood WatchDVN24 hr
Sep 1, 6:34 PM CDTMesoscale DiscussionSPC56 min
Sep 1, 8:20 PM CDTSevere Thunderstorm WatchSPC5 hr
Sep 1, 10:27 PM CDTMesoscale DiscussionSPC63 min
Sep 2, 9:26 AM CDTFlash Flood WatchDVN39 hr
Sep 2, 9:53 AM CDTRiver Flood WarningDVN11 days
Sep 2, 5:32 PM CDTSpecial Weather StatementDVN43 min
Sep 3, 1:20 PM CDTMesoscale DiscussionSPC2 hr
Sep 3, 5:15 PM CDTTornado WarningDVN45 min
Sep 3, 5:47 PM CDTMesoscale DiscussionSPC58 min
Sep 3, 6:05 PM CDTTornado WarningDVN40 min
Sep 3, 6:09 PM CDTTornado WatchSPC2 hr
Sep 4, 3:56 AM CDTFlash Flood WatchDVN39 hr
Sep 20, 9:25 AM CDTRiver Flood WarningDVN10 days
Sep 20, 2:38 PM CDTRiver Flood WarningDVN50 hr
Sep 25, 1:07 PM CDTMesoscale DiscussionSPC113 min
Sep 25, 1:28 PM CDTSevere Thunderstorm WarningDVN62 min
Sep 25, 1:28 PM CDTTornado WarningDVN47 min
Sep 25, 1:36 PM CDTSevere Thunderstorm WatchSPC8 hr
Sep 25, 1:51 PM CDTTornado WarningDVN24 min
Sep 25, 3:39 PM CDTMesoscale DiscussionSPC96 min
Sep 28, 3:41 AM CDTFrost AdvisoryDVN28 hr
Oct 1, 3:23 PM CDTRiver Flood WarningDVN63 hr
Oct 1, 3:29 PM CDTRiver Flood WatchDVN6 hr
Oct 1, 9:41 PM CDTRiver Flood WarningDVN15 days
Oct 3, 5:13 PM CDTMesoscale DiscussionSPC2 hr
Oct 3, 9:06 PM CDTSpecial Weather StatementDVN54 min
Oct 4, 1:18 PM CDTFlash Flood WatchDVN48 hr
Oct 6, 1:55 AM CDTFlash Flood WarningDVN6 hr
Oct 7, 2:44 PM CDTFlash Flood WatchDVN70 hr
Oct 8, 4:29 AM CDTSpecial Weather StatementDVN61 min
Oct 9, 11:26 AM CDTRiver Flood WarningDVN3 days
Oct 9, 2:45 PM CDTMesoscale DiscussionSPC2 hr
Oct 9, 6:37 PM CDTMesoscale DiscussionSPC83 min
Oct 10, 6:48 AM CDTFlash Flood WarningDVN6 hr
Oct 11, 3:40 AM CDTFreeze WarningDVN28 hr
Oct 12, 2:42 PM CDTFrost AdvisoryDVN18 hr
Oct 14, 3:21 PM CDTFreeze WarningDVN18 hr
Oct 15, 3:14 AM CDTFreeze WarningDVN30 hr
Oct 19, 7:36 PM CDTWind AdvisoryDVN20 hr
Oct 27, 2:31 PM CDTWind AdvisoryDVN26 hr
Oct 30, 12:58 PM CDTSpecial Weather StatementDVN32 min
Nov 16, 2:15 PM CSTWinter Weather AdvisoryDVN18 hr
Nov 23, 3:29 AM CSTWinter Storm WatchDVN24 hr
Nov 24, 3:52 AM CSTWinter Storm WarningDVN44 hr
Nov 30, 3:37 AM CSTDense Fog AdvisoryDVN6 hr
Dec 1, 7:28 AM CSTWind AdvisoryDVN7 hr
Dec 4, 7:19 AM CSTWinter Weather AdvisoryDVN3 hr
Dec 11, 12:08 PM CSTWinter Weather AdvisoryDVN21 hr
Dec 28, 2:50 AM CSTWinter Weather AdvisoryDVN9 hr
Dec 28, 2:37 PM CSTWinter Weather AdvisoryDVN7 hr
Dec 30, 3:03 PM CSTWinter Weather AdvisoryDVN21 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 archive20172019

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.