Alert archive / Mississippi / Washington County

Weather alerts in Washington County, Mississippi, 2012

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

Washington County and its neighbors

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

Alerts
149
Warnings
43
Watches
24
Advisories
19
Busiest month
April22 alerts
Busiest day
May 30, 201210 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 Washington County in 2012 had a tornado report inside them.

Washington County, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings291645%1580%29 min
Flash flood warnings8538%6100%53 min

Each office's whole area, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: tornado warnings1022476%5975%14 min
NWS Jackson, MS: severe thunderstorm warnings66538243%87285%25 min
NWS Jackson, MS: flash flood warnings1587155%16084%93 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 12, 3:47 AM CSTWind AdvisoryJAN14 hr
Jan 22, 1:31 AM CSTDense Fog AdvisoryJAN7 hr
Jan 22, 2:26 PM CSTMesoscale DiscussionSPC2 hr
Jan 22, 5:16 PM CSTTornado Watch PDSSPC6 hr
Jan 22, 8:37 PM CSTMesoscale DiscussionSPC83 min
Jan 22, 9:47 PM CSTMesoscale DiscussionSPC58 min
Jan 22, 10:36 PM CSTSevere Thunderstorm WarningJAN54 min
Jan 22, 10:59 PM CSTTornado WatchSPC7 hr
Jan 25, 2:08 PM CSTTornado WatchSPC7 hr
Jan 25, 4:49 PM CSTMesoscale DiscussionSPC86 min
Feb 1, 2:58 PM CSTMesoscale DiscussionSPC2 hr
Feb 1, 3:45 PM CSTSevere Thunderstorm WatchSPC3 hr
Feb 1, 5:24 PM CSTSevere Thunderstorm WarningJAN43 min
Feb 13, 9:29 AM CSTWinter Weather AdvisoryJAN3 hr
Feb 23, 4:55 AM CSTWind AdvisoryJAN14 hr
Feb 29, 11:46 AM CSTMesoscale DiscussionSPC89 min
Feb 29, 2:15 PM CSTSevere Thunderstorm WatchSPC6 hr
Feb 29, 2:39 PM CSTSpecial Weather StatementJAN46 min
Feb 29, 3:04 PM CSTSpecial Weather StatementJAN31 min
Feb 29, 3:07 PM CSTSevere Thunderstorm WarningJAN38 min
Feb 29, 4:06 PM CSTSevere Thunderstorm WarningJAN39 min
Mar 2, 3:18 AM CSTWind AdvisoryJAN13 hr
Mar 2, 1:26 PM CSTMesoscale DiscussionSPC64 min
Mar 2, 1:47 PM CSTSevere Thunderstorm WatchSPC9 hr
Mar 2, 2:29 PM CSTSevere Thunderstorm WarningJAN61 min
Mar 2, 3:36 PM CSTSevere Thunderstorm WarningJAN42 min
Mar 2, 3:47 PM CSTMesoscale DiscussionSPC58 min
Mar 2, 3:54 PM CSTSpecial Weather StatementJAN31 min
Mar 2, 4:07 PM CSTSevere Thunderstorm WarningJAN53 min
Mar 2, 5:10 PM CSTSevere Thunderstorm WarningJAN35 min
Mar 8, 4:53 PM CSTSpecial Weather StatementJAN47 min
Mar 11, 5:36 PM CDTMesoscale DiscussionSPC84 min
Mar 11, 6:42 PM CDTTornado WatchSPC8 hr
Mar 11, 8:28 PM CDTSevere Thunderstorm WarningJAN47 min
Mar 11, 8:44 PM CDTMesoscale DiscussionSPC91 min
Mar 11, 8:53 PM CDTSevere Thunderstorm WarningJAN52 min
Mar 12, 4:02 PM CDTMesoscale DiscussionSPC58 min
Mar 19, 3:00 PM CDTWind AdvisoryJAN28 hr
Mar 20, 4:36 AM CDTFlash Flood WatchJAN47 hr
Apr 2, 12:15 PM CDTMesoscale DiscussionSPC90 min
Apr 2, 12:50 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 2, 3:23 PM CDTMesoscale DiscussionSPC2 hr
Apr 2, 3:51 PM CDTSevere Thunderstorm WarningJAN54 min
Apr 2, 4:18 PM CDTSevere Thunderstorm WarningJAN57 min
Apr 2, 4:44 PM CDTSevere Thunderstorm WarningJAN61 min
Apr 3, 1:37 PM CDTSevere Thunderstorm WarningJAN38 min
Apr 3, 1:42 PM CDTMesoscale DiscussionSPC93 min
Apr 3, 1:59 PM CDTSevere Thunderstorm WarningJAN46 min
Apr 3, 3:41 PM CDTFlash Flood WarningJAN2 hr
Apr 3, 5:24 PM CDTMesoscale DiscussionSPC66 min
Apr 5, 1:35 AM CDTMesoscale DiscussionSPC85 min
Apr 5, 1:53 AM CDTTornado WatchSPC9 hr
Apr 5, 2:17 AM CDTSpecial Weather StatementJAN28 min
Apr 5, 2:37 AM CDTSevere Thunderstorm WarningJAN53 min
Apr 5, 3:26 AM CDTSevere Thunderstorm WarningJAN64 min
Apr 5, 3:30 AM CDTMesoscale DiscussionSPC2 hr
Apr 5, 5:30 AM CDTSevere Thunderstorm WarningJAN60 min
Apr 5, 6:15 AM CDTSevere Thunderstorm WarningJAN30 min
Apr 5, 7:36 AM CDTMesoscale DiscussionSPC54 min
Apr 14, 3:03 PM CDTWind AdvisoryJAN28 hr
Apr 25, 2:52 AM CDTWind AdvisoryJAN16 hr
May 2, 4:21 PM CDTSpecial Weather StatementJAN29 min
May 7, 10:39 AM CDTSevere Thunderstorm WarningJAN51 min
May 7, 11:54 PM CDTSpecial Weather StatementJAN31 min
May 8, 3:22 PM CDTFlash Flood WarningJAN91 min
May 14, 4:35 AM CDTDense Fog AdvisoryJAN3 hr
May 17, 2:48 PM CDTSpecial Weather StatementJAN37 min
May 17, 3:26 PM CDTSpecial Weather StatementJAN29 min
May 21, 4:35 PM CDTMesoscale DiscussionSPC55 min
May 30, 11:49 AM CDTSpecial Weather StatementJAN41 min
May 30, 12:07 PM CDTMesoscale DiscussionSPC83 min
May 30, 12:27 PM CDTSevere Thunderstorm WatchSPC7 hr
May 30, 12:41 PM CDTSpecial Weather StatementJAN29 min
May 30, 1:04 PM CDTSevere Thunderstorm WarningJAN27 min
May 30, 1:34 PM CDTSpecial Weather StatementJAN41 min
May 30, 2:34 PM CDTMesoscale DiscussionSPC56 min
May 30, 3:03 PM CDTFlash Flood WarningJAN61 min
May 30, 3:27 PM CDTSevere Thunderstorm WarningJAN63 min
May 30, 4:56 PM CDTMesoscale DiscussionSPC94 min
May 31, 11:59 AM CDTMesoscale DiscussionSPC61 min
May 31, 12:59 PM CDTSevere Thunderstorm WatchSPC6 hr
May 31, 2:38 PM CDTMesoscale DiscussionSPC67 min
Jun 4, 5:06 PM CDTMesoscale DiscussionSPC114 min
Jun 4, 7:18 PM CDTSevere Thunderstorm WarningJAN57 min
Jun 4, 8:03 PM CDTMesoscale DiscussionSPC87 min
Jun 4, 8:14 PM CDTSevere Thunderstorm WarningJAN61 min
Jun 4, 8:50 PM CDTFlash Flood WarningJAN3 hr
Jun 4, 9:02 PM CDTSpecial Weather StatementJAN33 min
Jun 4, 9:18 PM CDTSevere Thunderstorm WarningJAN57 min
Jun 11, 5:17 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 11, 5:50 PM CDTSevere Thunderstorm WarningJAN70 min
Jun 11, 6:59 PM CDTSevere Thunderstorm WarningJAN61 min
Jun 11, 7:33 PM CDTMesoscale DiscussionSPC57 min
Jun 11, 8:20 PM CDTFlash Flood WarningJAN93 min
Jun 12, 5:50 AM CDTAreal Flood WarningJAN3 hr
Jun 29, 3:44 AM CDTHeat AdvisoryJAN66 hr
Jul 6, 5:08 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 6, 6:15 PM CDTMesoscale DiscussionSPC2 hr
Jul 8, 8:49 AM CDTSpecial Weather StatementJAN61 min
Jul 20, 12:47 PM CDTMesoscale DiscussionSPC2 hr
Jul 29, 3:53 AM CDTHeat AdvisoryJAN4 days
Jul 30, 2:45 AM CDTExcessive Heat WarningJAN65 hr
Aug 6, 5:16 PM CDTSevere Thunderstorm WarningJAN44 min
Aug 13, 7:48 AM CDTMesoscale DiscussionSPC87 min
Aug 13, 8:56 AM CDTSpecial Weather StatementJAN29 min
Aug 13, 3:15 PM CDTMesoscale DiscussionSPC30 min
Aug 13, 3:32 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 13, 7:59 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 13, 9:17 PM CDTMesoscale DiscussionSPC88 min
Aug 17, 2:37 AM CDTSpecial Weather StatementJAN28 min
Aug 17, 7:53 PM CDTMesoscale DiscussionSPC2 hr
Aug 18, 6:29 AM CDTMesoscale DiscussionSPC2 hr
Aug 27, 4:32 PM CDTFlash Flood WatchJAN3 days
Aug 29, 4:44 PM CDTWind AdvisoryJAN23 hr
Aug 30, 3:56 PM CDTTornado WatchSPC6 hr
Aug 30, 4:53 PM CDTFlash Flood WarningJAN112 min
Aug 30, 6:39 PM CDTFlash Flood WarningJAN111 min
Aug 30, 8:29 PM CDTAreal Flood WarningJAN12 hr
Aug 30, 9:05 PM CDTMesoscale DiscussionSPC55 min
Aug 30, 9:44 PM CDTTornado WatchSPC5 hr
Sep 3, 3:32 AM CDTHeat AdvisoryJAN5 days
Sep 29, 4:02 AM CDTFlash Flood WatchJAN45 hr
Sep 30, 4:19 PM CDTSpecial Weather StatementJAN71 min
Sep 30, 6:10 PM CDTFlash Flood WarningJAN3 hr
Sep 30, 6:50 PM CDTSpecial Weather StatementJAN75 min
Sep 30, 9:22 PM CDTAreal Flood WarningJAN4 hr
Oct 14, 3:26 AM CDTWind AdvisoryJAN13 hr
Oct 14, 5:38 PM CDTSpecial Weather StatementJAN57 min
Oct 17, 4:17 AM CDTWind AdvisoryJAN15 hr
Oct 17, 3:44 PM CDTMesoscale DiscussionSPC61 min
Oct 17, 6:29 PM CDTMesoscale DiscussionSPC91 min
Oct 17, 7:01 PM CDTTornado WatchSPC8 hr
Oct 17, 9:28 PM CDTMesoscale DiscussionSPC92 min
Oct 17, 9:41 PM CDTTornado WarningJAN30 min
Nov 11, 3:41 AM CSTWind AdvisoryJAN14 hr
Nov 12, 2:44 PM CSTFreeze WarningJAN17 hr
Nov 26, 10:14 PM CSTMesoscale DiscussionSPC3 hr
Nov 28, 6:39 AM CSTFreezing Fog AdvisoryJAN2 hr
Dec 4, 3:18 PM CSTSpecial Weather StatementJAN32 min
Dec 4, 4:26 PM CSTSpecial Weather StatementJAN44 min
Dec 9, 5:47 PM CSTSevere Thunderstorm WatchSPC6 hr
Dec 9, 11:00 PM CSTSpecial Weather StatementJAN40 min
Dec 19, 9:53 AM CSTWind AdvisoryJAN32 hr
Dec 20, 12:50 AM CSTMesoscale DiscussionSPC55 min
Dec 20, 1:07 AM CSTSevere Thunderstorm WatchSPC5 hr
Dec 20, 2:59 AM CSTSevere Thunderstorm WarningJAN76 min
Dec 20, 4:08 AM CSTMesoscale DiscussionSPC67 min
Dec 25, 5:03 AM CSTWind AdvisoryJAN25 hr
Dec 25, 10:17 AM CSTFlash Flood WatchJAN9 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.