Alert archive / Missouri / Clay County

Weather alerts in Clay County, Missouri, 2010

261 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Clay County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
261
Warnings
97
Watches
40
Advisories
45
Busiest month
June45 alerts
Busiest day
July 20, 201012 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 1 tornado warnings covering Clay County in 2010 had a tornado report inside them.

Clay County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings513531%4486%16 min
Flash flood warnings10550%450%44 min

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Kansas City, MO: tornado warnings28968%2259%14 min
NWS Kansas City, MO: severe thunderstorm warnings34618646%46779%17 min
NWS Kansas City, MO: flash flood warnings713945%10583%116 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 5, 4:37 AM CSTWinter Storm WatchEAX10 hr
Jan 5, 2:36 PM CSTWinter Storm WarningEAX38 hr
Jan 7, 4:31 AM CSTWind Chill WarningEAX43 hr
Jan 7, 4:31 AM CSTWinter Weather AdvisoryEAX16 hr
Jan 8, 9:24 PM CSTWind Chill AdvisoryEAX13 hr
Jan 12, 8:44 AM CSTFreezing Fog AdvisoryEAX3 hr
Jan 15, 6:26 AM CSTDense Fog AdvisoryEAX6 hr
Jan 15, 3:06 PM CSTFreezing Fog AdvisoryEAX21 hr
Jan 16, 12:16 PM CSTDense Fog AdvisoryEAX26 hr
Jan 17, 3:44 PM CSTDense Fog AdvisoryEAX41 hr
Jan 20, 4:16 AM CSTDense Fog AdvisoryEAX6 hr
Feb 4, 4:04 AM CSTWinter Weather AdvisoryEAX38 hr
Feb 6, 4:15 AM CSTWinter Storm WatchEAX34 hr
Feb 7, 2:21 PM CSTWinter Weather AdvisoryEAX35 hr
Feb 12, 3:05 PM CSTWinter Weather AdvisoryEAX66 hr
Feb 19, 8:52 AM CSTSpecial Weather StatementEAX83 min
Feb 19, 3:22 PM CSTWinter Storm WatchEAX26 hr
Feb 19, 9:47 PM CSTDense Fog AdvisoryEAX5 hr
Feb 20, 3:37 AM CSTWinter Storm WarningEAX44 hr
Feb 21, 6:32 AM CSTMesoscale DiscussionSPC5 hr
Mar 11, 12:14 AM CSTRiver Flood WarningEAX9 hr
Mar 11, 7:10 AM CSTRiver Flood WarningEAX3 hr
Mar 12, 9:33 AM CSTRiver Flood WarningEAX57 hr
Mar 19, 12:35 PM CDTWinter Weather AdvisoryEAX42 hr
Mar 19, 12:37 PM CDTRiver Flood WarningEAX33 hr
Mar 22, 10:06 AM CDTRiver Flood WarningEAX6 days
Mar 27, 10:54 AM CDTSpecial Weather StatementEAX36 min
Apr 2, 8:28 AM CDTMesoscale DiscussionSPC92 min
Apr 2, 9:11 AM CDTSevere Thunderstorm WarningEAX34 min
Apr 2, 9:44 AM CDTSevere Thunderstorm WarningEAX31 min
Apr 2, 10:04 AM CDTSevere Thunderstorm WarningEAX26 min
Apr 4, 2:22 PM CDTMesoscale DiscussionSPC113 min
Apr 4, 3:34 PM CDTTornado WatchSPC8 hr
Apr 4, 4:35 PM CDTSpecial Weather StatementEAX25 min
Apr 4, 4:53 PM CDTSevere Thunderstorm WarningEAX37 min
Apr 4, 6:23 PM CDTMesoscale DiscussionSPC67 min
Apr 5, 6:47 AM CDTSevere Thunderstorm WarningEAX28 min
Apr 5, 6:56 AM CDTMesoscale DiscussionSPC64 min
Apr 5, 7:14 AM CDTSevere Thunderstorm WatchSPC7 hr
Apr 5, 11:11 AM CDTMesoscale DiscussionSPC64 min
Apr 6, 1:32 PM CDTMesoscale DiscussionSPC58 min
Apr 6, 2:08 PM CDTSevere Thunderstorm WatchSPC8 hr
Apr 6, 4:57 PM CDTSevere Thunderstorm WarningEAX33 min
Apr 6, 5:28 PM CDTSevere Thunderstorm WarningEAX32 min
Apr 6, 5:49 PM CDTSevere Thunderstorm WarningEAX26 min
Apr 6, 6:08 PM CDTMesoscale DiscussionSPC97 min
Apr 6, 6:10 PM CDTSevere Thunderstorm WarningEAX26 min
Apr 6, 6:30 PM CDTSpecial Weather StatementEAX30 min
Apr 6, 6:31 PM CDTFlash Flood WarningEAX4 hr
Apr 6, 6:51 PM CDTSpecial Weather StatementEAX39 min
Apr 6, 8:15 PM CDTRiver Flood WarningEAX15 hr
Apr 7, 3:45 PM CDTSevere Thunderstorm WarningEAX45 min
Apr 7, 4:25 PM CDTSevere Thunderstorm WarningEAX35 min
Apr 23, 10:03 PM CDTMesoscale DiscussionSPC27 min
Apr 23, 10:58 PM CDTTornado WatchSPC5 hr
Apr 24, 1:28 AM CDTSevere Thunderstorm WarningEAX32 min
Apr 28, 4:06 PM CDTWind AdvisoryEAX24 hr
Apr 29, 11:12 PM CDTWind AdvisoryEAX5 hr
Apr 30, 8:35 AM CDTSevere Thunderstorm WarningEAX25 min
Apr 30, 9:18 AM CDTMesoscale DiscussionSPC57 min
May 2, 1:40 PM CDTSpecial Weather StatementEAX20 min
May 2, 2:15 PM CDTMesoscale DiscussionSPC90 min
May 2, 11:36 PM CDTSevere Thunderstorm WarningEAX24 min
May 2, 11:44 PM CDTSevere Thunderstorm WarningEAX31 min
May 6, 9:11 PM CDTMesoscale DiscussionSPC34 min
May 6, 9:16 PM CDTSevere Thunderstorm WatchSPC8 hr
May 6, 11:49 PM CDTMesoscale DiscussionSPC86 min
May 7, 2:31 AM CDTMesoscale DiscussionSPC59 min
May 7, 2:51 AM CDTSevere Thunderstorm WarningEAX24 min
May 7, 3:53 AM CDTMesoscale DiscussionSPC37 min
May 10, 8:27 PM CDTAreal Flood AdvisoryEAX3 hr
May 12, 3:18 AM CDTSpecial Weather StatementEAX27 min
May 12, 3:21 AM CDTSevere Thunderstorm WarningEAX24 min
May 12, 4:00 AM CDTFlash Flood WatchEAX25 hr
May 12, 5:11 PM CDTSpecial Weather StatementEAX49 min
May 12, 5:14 PM CDTMesoscale DiscussionSPC91 min
May 12, 5:16 PM CDTAreal Flood AdvisoryEAX6 hr
May 12, 5:37 PM CDTSpecial Weather StatementEAX38 min
May 12, 5:40 PM CDTTornado WatchSPC6 hr
May 12, 5:41 PM CDTSevere Thunderstorm WarningEAX34 min
May 12, 7:31 PM CDTSevere Thunderstorm WarningEAX44 min
May 12, 8:16 PM CDTFlash Flood WarningEAX9 hr
May 12, 8:19 PM CDTSpecial Weather StatementEAX41 min
May 12, 8:31 PM CDTSevere Thunderstorm WarningEAX44 min
May 12, 8:35 PM CDTRiver Flood WarningEAX32 hr
May 12, 10:53 PM CDTMesoscale DiscussionSPC97 min
May 12, 11:28 PM CDTSevere Thunderstorm WarningEAX47 min
May 13, 1:21 AM CDTRiver Flood WarningEAX9 hr
May 13, 2:45 AM CDTRiver Flood WarningEAX36 hr
May 13, 5:18 AM CDTAreal Flood WarningEAX11 hr
May 13, 3:27 PM CDTAreal Flood WarningEAX24 hr
May 19, 4:05 AM CDTFlood WatchEAX45 hr
May 25, 3:10 PM CDTSevere Thunderstorm WarningEAX35 min
May 26, 4:59 PM CDTSevere Thunderstorm WarningEAX31 min
May 26, 5:08 PM CDTAreal Flood AdvisoryEAX108 min
May 26, 5:49 PM CDTFlash Flood WarningEAX66 min
Jun 1, 9:17 PM CDTMesoscale DiscussionSPC118 min
Jun 1, 11:36 PM CDTMesoscale DiscussionSPC54 min
Jun 2, 1:31 AM CDTMesoscale DiscussionSPC89 min
Jun 4, 7:36 PM CDTMesoscale DiscussionSPC54 min
Jun 8, 7:07 AM CDTMesoscale DiscussionSPC83 min
Jun 8, 1:56 PM CDTMesoscale DiscussionSPC2 hr
Jun 8, 2:39 PM CDTTornado WatchSPC8 hr
Jun 8, 6:21 PM CDTFlash Flood WarningEAX3 hr
Jun 12, 10:04 AM CDTAreal Flood AdvisoryEAX3 hr
Jun 12, 10:18 AM CDTRiver Flood WarningEAX32 days
Jun 12, 11:00 AM CDTFlash Flood WarningEAX3 hr
Jun 12, 3:39 PM CDTFlash Flood WatchEAX42 hr
Jun 13, 11:11 AM CDTRiver Flood WarningEAX11 hr
Jun 13, 12:47 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 13, 9:00 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 13, 10:40 PM CDTAreal Flood AdvisoryEAX5 hr
Jun 13, 11:43 PM CDTMesoscale DiscussionSPC62 min
Jun 14, 12:59 AM CDTSpecial Weather StatementEAX46 min
Jun 16, 4:37 PM CDTAreal Flood AdvisoryEAX4 hr
Jun 16, 5:37 PM CDTSevere Thunderstorm WatchSPC3 hr
Jun 18, 10:46 PM CDTMesoscale DiscussionSPC89 min
Jun 18, 11:38 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 19, 6:50 AM CDTMesoscale DiscussionSPC55 min
Jun 19, 8:02 AM CDTSevere Thunderstorm WatchSPC7 hr
Jun 19, 11:09 AM CDTSevere Thunderstorm WarningEAX51 min
Jun 19, 11:29 AM CDTMesoscale DiscussionSPC91 min
Jun 19, 11:47 AM CDTSevere Thunderstorm WarningEAX43 min
Jun 19, 11:54 AM CDTSevere Thunderstorm WarningEAX36 min
Jun 19, 12:21 PM CDTSevere Thunderstorm WarningEAX39 min
Jun 19, 9:22 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 19, 11:13 PM CDTMesoscale DiscussionSPC92 min
Jun 19, 11:19 PM CDTSevere Thunderstorm WarningEAX41 min
Jun 19, 11:52 PM CDTSevere Thunderstorm WarningEAX23 min
Jun 20, 12:12 AM CDTSevere Thunderstorm WarningEAX33 min
Jun 20, 12:04 PM CDTMesoscale DiscussionSPC116 min
Jun 20, 8:07 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 20, 11:00 PM CDTMesoscale DiscussionSPC90 min
Jun 21, 12:25 AM CDTSpecial Weather StatementEAX50 min
Jun 21, 7:39 AM CDTMesoscale DiscussionSPC96 min
Jun 21, 4:10 PM CDTMesoscale DiscussionSPC35 min
Jun 21, 11:15 PM CDTMesoscale DiscussionSPC90 min
Jun 22, 4:17 AM CDTHeat AdvisoryEAX38 hr
Jun 23, 2:12 PM CDTMesoscale DiscussionSPC93 min
Jun 23, 2:44 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 10:45 AM CDTHeat AdvisoryEAX8 hr
Jul 3, 3:44 PM CDTFlood WatchEAX63 hr
Jul 11, 11:07 AM CDTAreal Flood AdvisoryEAX4 hr
Jul 11, 2:02 PM CDTRiver Flood WarningEAX6 hr
Jul 13, 1:33 PM CDTHeat AdvisoryEAX46 hr
Jul 14, 7:59 AM CDTExcessive Heat WarningEAX14 hr
Jul 14, 7:37 PM CDTMesoscale DiscussionSPC83 min
Jul 14, 11:30 PM CDTSevere Thunderstorm WarningEAX30 min
Jul 14, 11:59 PM CDTSevere Thunderstorm WarningEAX31 min
Jul 15, 10:02 AM CDTRiver Flood WarningEAX4 days
Jul 16, 3:27 PM CDTHeat AdvisoryEAX48 hr
Jul 16, 3:49 PM CDTMesoscale DiscussionSPC86 min
Jul 18, 3:48 PM CDTExcessive Heat WarningEAX52 hr
Jul 20, 1:09 AM CDTMesoscale DiscussionSPC36 min
Jul 20, 1:36 AM CDTSevere Thunderstorm WatchSPC6 hr
Jul 20, 3:59 AM CDTFlash Flood WatchEAX26 hr
Jul 20, 4:13 AM CDTMesoscale DiscussionSPC62 min
Jul 20, 5:11 AM CDTSpecial Weather StatementEAX49 min
Jul 20, 2:26 PM CDTMesoscale DiscussionSPC94 min
Jul 20, 3:32 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 20, 4:09 PM CDTSpecial Weather StatementEAX51 min
Jul 20, 4:14 PM CDTSevere Thunderstorm WarningEAX31 min
Jul 20, 4:23 PM CDTFlash Flood WarningEAX6 hr
Jul 20, 4:37 PM CDTSevere Thunderstorm WarningEAX23 min
Jul 20, 5:07 PM CDTFlash Flood WarningEAX6 hr
Jul 20, 7:48 PM CDTRiver Flood WarningEAX4 hr
Jul 21, 4:19 AM CDTExcessive Heat WarningEAX64 hr
Jul 21, 10:02 AM CDTRiver Flood WarningEAX32 hr
Jul 24, 2:22 PM CDTMesoscale DiscussionSPC83 min
Jul 24, 3:32 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 24, 4:58 PM CDTAreal Flood AdvisoryEAX3 hr
Jul 24, 10:56 PM CDTRiver Flood WarningEAX3 hr
Jul 30, 12:45 PM CDTMesoscale DiscussionSPC60 min
Jul 30, 1:49 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 30, 2:09 PM CDTSevere Thunderstorm WarningEAX36 min
Jul 30, 8:26 PM CDTSevere Thunderstorm WarningEAX34 min
Jul 30, 8:45 PM CDTSevere Thunderstorm WarningEAX30 min
Aug 1, 2:42 PM CDTHeat AdvisoryEAX3 days
Aug 2, 3:24 PM CDTExcessive Heat WarningEAX48 hr
Aug 6, 3:47 AM CDTExcessive Heat WarningEAX9 days
Aug 7, 8:52 PM CDTRiver Flood WarningEAX4 days
Aug 12, 1:35 PM CDTSpecial Weather StatementEAX25 min
Aug 12, 1:56 PM CDTSevere Thunderstorm WarningEAX34 min
Aug 12, 2:06 PM CDTSevere Thunderstorm WarningEAX24 min
Aug 12, 2:31 PM CDTSevere Thunderstorm WarningEAX29 min
Aug 13, 10:36 AM CDTMesoscale DiscussionSPC84 min
Aug 13, 3:28 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 13, 5:51 PM CDTMesoscale DiscussionSPC54 min
Aug 13, 6:38 PM CDTSevere Thunderstorm WarningEAX37 min
Aug 13, 7:21 PM CDTSevere Thunderstorm WarningEAX39 min
Aug 13, 8:04 PM CDTSpecial Weather StatementEAX41 min
Aug 20, 11:29 AM CDTMesoscale DiscussionSPC91 min
Aug 20, 1:38 PM CDTSevere Thunderstorm WarningEAX37 min
Aug 20, 1:45 PM CDTSevere Thunderstorm WarningEAX35 min
Aug 20, 2:06 PM CDTTornado WarningEAX24 min
Aug 20, 2:59 PM CDTSpecial Weather StatementEAX46 min
Aug 20, 4:26 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 20, 5:20 PM CDTMesoscale DiscussionSPC85 min
Aug 20, 11:37 PM CDTFlash Flood WarningEAX5 hr
Aug 31, 9:46 PM CDTMesoscale DiscussionSPC59 min
Sep 1, 1:23 AM CDTAreal Flood AdvisoryEAX7 hr
Sep 1, 2:17 AM CDTRiver Flood WarningEAX8 hr
Sep 6, 4:09 AM CDTWind AdvisoryEAX14 hr
Sep 10, 11:46 AM CDTFlash Flood WatchEAX16 hr
Sep 10, 3:10 PM CDTMesoscale DiscussionSPC95 min
Sep 10, 5:20 PM CDTMesoscale DiscussionSPC85 min
Sep 10, 5:54 PM CDTTornado WatchSPC7 hr
Sep 10, 8:51 PM CDTSevere Thunderstorm WarningEAX24 min
Sep 10, 9:07 PM CDTAreal Flood AdvisoryEAX2 hr
Sep 10, 9:12 PM CDTSpecial Weather StatementEAX48 min
Sep 10, 9:40 PM CDTMesoscale DiscussionSPC2 hr
Sep 13, 5:45 PM CDTMesoscale DiscussionSPC60 min
Sep 13, 8:10 PM CDTSevere Thunderstorm WatchSPC109 min
Sep 13, 9:21 PM CDTSpecial Weather StatementEAX39 min
Sep 15, 3:54 AM CDTFlash Flood WatchEAX18 hr
Sep 15, 5:03 PM CDTMesoscale DiscussionSPC117 min
Sep 18, 1:15 PM CDTMesoscale DiscussionSPC2 hr
Sep 18, 2:21 PM CDTSevere Thunderstorm WatchSPC8 hr
Sep 18, 3:45 PM CDTSpecial Weather StatementEAX30 min
Sep 18, 3:51 PM CDTSevere Thunderstorm WarningEAX24 min
Sep 18, 5:08 PM CDTAreal Flood AdvisoryEAX5 hr
Sep 18, 9:25 PM CDTSevere Thunderstorm WatchSPC8 hr
Sep 18, 10:21 PM CDTAreal Flood AdvisoryEAX118 min
Sep 18, 10:51 PM CDTSevere Thunderstorm WarningEAX24 min
Sep 18, 10:56 PM CDTFlash Flood WarningEAX6 hr
Sep 18, 11:20 PM CDTSevere Thunderstorm WarningEAX25 min
Sep 18, 11:25 PM CDTFlash Flood WarningEAX6 hr
Sep 18, 11:25 PM CDTSevere Thunderstorm WarningEAX35 min
Sep 19, 12:10 AM CDTSevere Thunderstorm WarningEAX35 min
Sep 19, 12:41 AM CDTSevere Thunderstorm WarningEAX34 min
Sep 21, 3:54 AM CDTFlash Flood WatchEAX24 hr
Sep 21, 1:54 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 21, 5:59 PM CDTMesoscale DiscussionSPC91 min
Sep 21, 7:52 PM CDTMesoscale DiscussionSPC53 min
Sep 21, 10:08 PM CDTSpecial Weather StatementEAX37 min
Sep 21, 10:39 PM CDTSpecial Weather StatementEAX36 min
Sep 21, 10:47 PM CDTAreal Flood AdvisoryEAX6 hr
Sep 22, 1:05 AM CDTRiver Flood WarningEAX45 hr
Sep 22, 4:42 AM CDTAreal Flood WarningEAX11 hr
Sep 23, 4:16 AM CDTFlash Flood WatchEAX19 hr
Sep 23, 8:04 PM CDTAreal Flood AdvisoryEAX3 hr
Sep 23, 8:59 PM CDTAreal Flood AdvisoryEAX6 hr
Sep 23, 10:36 PM CDTRiver Flood WarningEAX13 hr
Oct 2, 3:33 AM CDTFrost AdvisoryEAX29 hr
Oct 3, 2:35 PM CDTFrost AdvisoryEAX18 hr
Oct 23, 2:12 PM CDTMesoscale DiscussionSPC93 min
Oct 23, 3:22 PM CDTTornado WatchSPC3 hr
Oct 23, 6:23 PM CDTMesoscale DiscussionSPC67 min
Oct 25, 3:52 PM CDTWind AdvisoryEAX27 hr
Oct 27, 3:21 AM CDTRed Flag WarningEAX16 hr
Oct 28, 3:42 AM CDTFreeze WarningEAX29 hr
Nov 5, 3:52 PM CDTFire Weather WatchEAX23 hr
Nov 6, 3:15 PM CDTRed Flag WarningEAX28 hr
Nov 28, 3:27 AM CSTRed Flag WarningEAX15 hr
Dec 10, 8:58 PM CSTWind AdvisoryEAX39 hr
Dec 11, 4:11 AM CSTWinter Weather AdvisoryEAX24 hr
Dec 15, 6:30 PM CSTWinter Weather AdvisoryEAX9 hr
Dec 23, 10:41 AM CSTWinter Weather AdvisoryEAX37 hr
Dec 26, 11:26 PM CSTDense Fog AdvisoryEAX10 hr
Dec 30, 12:58 PM CSTWind AdvisoryEAX3 hr
Dec 31, 3:56 AM CSTMesoscale DiscussionSPC3 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 archive20092011

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.