Alert archive / Missouri / Pettis County

Weather alerts in Pettis County, Missouri, 2012

81 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pettis County and its neighbors

Each county as a circle sized by its count in 2012. Tap one for its archive.

Alerts
81
Warnings
17
Watches
7
Advisories
26
Busiest month
May14 alerts
Busiest day
April 30, 20125 alerts

Over time

By month

Warning verification

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

Pettis County, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings4250%2100%11 min
Flash flood warnings110%0

Each office's whole area, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Kansas City, MO: tornado warnings3233%475%4 min
NWS Kansas City, MO: severe thunderstorm warnings1115055%13766%15 min
NWS Kansas City, MO: flash flood warnings8625%888%41 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 11, 11:31 AM CSTWinter Weather AdvisoryEAX29 hr
Jan 22, 9:04 PM CSTSpecial Weather StatementEAX41 min
Jan 22, 9:51 PM CSTSpecial Weather StatementEAX24 min
Jan 26, 3:20 AM CSTDense Fog AdvisoryEAX7 hr
Jan 29, 2:20 PM CSTFire Weather WatchEAX13 hr
Jan 30, 3:27 AM CSTRed Flag WarningEAX15 hr
Feb 5, 9:52 PM CSTFreezing Fog AdvisoryEAX12 hr
Feb 12, 4:08 AM CSTWinter Weather AdvisoryEAX38 hr
Feb 13, 9:05 PM CSTSpecial Weather StatementEAX9 hr
Feb 20, 8:02 PM CSTSpecial Weather StatementEAX43 min
Feb 23, 3:37 AM CSTWind AdvisoryEAX18 hr
Feb 28, 10:07 PM CSTSevere Thunderstorm WatchSPC3 hr
Mar 2, 2:07 AM CSTSevere Thunderstorm WatchSPC5 hr
Mar 4, 3:41 AM CSTWind AdvisoryEAX14 hr
Mar 5, 2:46 PM CSTWind AdvisoryEAX28 hr
Mar 6, 4:43 AM CSTRed Flag WarningEAX14 hr
Mar 7, 12:19 AM CSTWind AdvisoryEAX15 hr
Mar 16, 1:34 AM CDTMesoscale DiscussionSPC116 min
Mar 18, 3:28 AM CDTFlood WatchEAX3 days
Mar 19, 5:39 PM CDTSpecial Weather StatementEAX36 min
Mar 20, 3:37 AM CDTRiver Flood WarningEAX64 hr
Mar 23, 1:32 PM CDTSpecial Weather StatementEAX88 min
Mar 23, 6:43 PM CDTMesoscale DiscussionSPC32 min
Mar 23, 7:09 PM CDTSpecial Weather StatementEAX36 min
Apr 13, 7:34 PM CDTMesoscale DiscussionSPC116 min
Apr 15, 4:17 AM CDTWind AdvisoryEAX16 hr
Apr 15, 1:04 PM CDTSevere Thunderstorm WarningEAX41 min
Apr 27, 12:22 PM CDTSpecial Weather StatementEAX8 min
Apr 27, 12:30 PM CDTSpecial Weather StatementEAX15 min
Apr 29, 10:41 PM CDTAreal Flood AdvisoryEAX3 hr
Apr 29, 10:50 PM CDTSpecial Weather StatementEAX25 min
Apr 29, 11:36 PM CDTFlash Flood WarningEAX6 hr
Apr 30, 5:35 AM CDTAreal Flood WarningEAX10 hr
Apr 30, 7:05 AM CDTRiver Flood WarningEAX8 hr
May 1, 12:56 PM CDTRiver Flood WarningEAX7 hr
May 6, 1:22 PM CDTMesoscale DiscussionSPC53 min
May 6, 1:42 PM CDTSevere Thunderstorm WatchSPC7 hr
May 6, 3:49 PM CDTSevere Thunderstorm WatchSPC7 hr
May 6, 3:56 PM CDTMesoscale DiscussionSPC64 min
May 6, 7:14 PM CDTSpecial Weather StatementEAX46 min
May 6, 7:24 PM CDTMesoscale DiscussionSPC96 min
May 6, 8:21 PM CDTSpecial Weather StatementEAX24 min
May 25, 10:32 AM CDTSpecial Weather StatementEAX43 min
May 25, 11:02 AM CDTSevere Thunderstorm WarningEAX28 min
May 28, 8:55 PM CDTAreal Flood AdvisoryEAX4 hr
May 28, 9:01 PM CDTSevere Thunderstorm WarningEAX29 min
May 28, 9:28 PM CDTSevere Thunderstorm WarningEAX32 min
May 28, 9:58 PM CDTSpecial Weather StatementEAX47 min
Jun 16, 11:40 AM CDTMesoscale DiscussionSPC95 min
Jun 16, 5:36 PM CDTMesoscale DiscussionSPC84 min
Jun 26, 4:03 PM CDTExcessive Heat WarningEAX4 days
Jun 26, 4:03 PM CDTHeat AdvisoryEAX12 hr
Jul 2, 3:36 PM CDTHeat AdvisoryEAX5 days
Jul 7, 2:05 PM CDTMesoscale DiscussionSPC85 min
Jul 8, 3:23 AM CDTHeat AdvisoryEAX16 hr
Jul 17, 3:35 PM CDTExcessive Heat WarningEAX8 days
Jul 17, 3:35 PM CDTHeat AdvisoryEAX3 days
Jul 25, 5:04 AM CDTRed Flag WarningEAX14 hr
Jul 27, 3:24 PM CDTHeat AdvisoryEAX52 hr
Aug 1, 3:41 AM CDTHeat AdvisoryEAX15 hr
Aug 2, 3:34 PM CDTHeat AdvisoryEAX27 hr
Aug 3, 3:19 PM CDTHeat AdvisoryEAX29 hr
Aug 8, 8:54 PM CDTSpecial Weather StatementEAX36 min
Aug 8, 9:12 PM CDTMesoscale DiscussionSPC93 min
Aug 12, 3:39 PM CDTMesoscale DiscussionSPC2 hr
Aug 22, 3:34 PM CDTRed Flag WarningEAX27 hr
Sep 7, 1:41 PM CDTMesoscale DiscussionSPC94 min
Sep 7, 2:35 PM CDTSevere Thunderstorm WatchSPC6 hr
Oct 4, 10:54 PM CDTMesoscale DiscussionSPC3 hr
Oct 4, 11:25 PM CDTSpecial Weather StatementEAX35 min
Oct 6, 3:32 AM CDTFreeze WarningEAX28 hr
Oct 17, 3:30 PM CDTWind AdvisoryEAX28 hr
Oct 23, 1:12 AM CDTMesoscale DiscussionSPC3 hr
Oct 26, 3:38 AM CDTFreeze WarningEAX28 hr
Nov 11, 5:49 AM CSTMesoscale DiscussionSPC86 min
Nov 20, 6:19 PM CSTDense Fog AdvisoryEAX15 hr
Dec 9, 7:13 AM CSTDense Fog AdvisoryEAX3 hr
Dec 16, 4:12 AM CSTDense Fog AdvisoryEAX10 hr
Dec 16, 8:27 PM CSTDense Fog AdvisoryEAX10 hr
Dec 18, 3:18 PM CSTWinter Weather AdvisoryEAX48 hr
Dec 30, 12:01 PM CSTWinter Weather AdvisoryEAX42 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 archive20112013

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.