Alert archive / Mississippi / Wilkinson County

Weather alerts in Wilkinson County, Mississippi, 2009

125 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Wilkinson County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts
125
Warnings
23
Watches
25
Advisories
38
Busiest month
December30 alerts
Busiest day
March 28, 20098 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 2 tornado warnings covering Wilkinson County in 2009 had a tornado report inside them.

Wilkinson County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings10190%1100%44 min
Flash flood warnings3167%1100%89 min

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS New Orleans, LA: tornado warnings73889%2030%19 min
NWS New Orleans, LA: severe thunderstorm warnings1913980%10256%22 min
NWS New Orleans, LA: flash flood warnings592459%6685%88 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 3, 9:33 AM CSTSevere Thunderstorm WatchSPC6 hr
Jan 3, 12:32 PM CSTMesoscale DiscussionSPC88 min
Jan 3, 4:27 PM CSTMesoscale DiscussionSPC33 min
Jan 3, 6:29 PM CSTMesoscale DiscussionSPC61 min
Jan 4, 11:29 PM CSTDense Fog AdvisoryLIX10 hr
Jan 14, 10:48 AM CSTHard Freeze WatchLIX18 hr
Jan 15, 4:31 AM CSTHard Freeze WarningLIX28 hr
Jan 15, 11:05 AM CSTWind Chill AdvisoryLIX22 hr
Jan 16, 4:52 AM CSTHard Freeze WarningLIX27 hr
Feb 3, 3:45 PM CSTHard Freeze WatchLIX12 hr
Feb 18, 1:22 PM CSTMesoscale DiscussionSPC53 min
Mar 16, 2:20 AM CDTAreal Flood AdvisoryLIX106 days
Mar 25, 3:51 PM CDTFlash Flood WatchLIX63 hr
Mar 25, 8:32 PM CDTMesoscale DiscussionSPC88 min
Mar 25, 8:54 PM CDTTornado WatchSPC7 hr
Mar 25, 11:38 PM CDTMesoscale DiscussionSPC97 min
Mar 25, 11:56 PM CDTSevere Thunderstorm WarningLIX64 min
Mar 26, 5:36 PM CDTMesoscale DiscussionSPC54 min
Mar 26, 5:56 PM CDTTornado WatchSPC7 hr
Mar 27, 2:54 PM CDTTornado WatchSPC6 hr
Mar 27, 6:46 PM CDTSevere Thunderstorm WarningLIX59 min
Mar 27, 7:01 PM CDTFlash Flood WarningLIX3 hr
Mar 27, 7:51 PM CDTTornado WatchSPC9 hr
Mar 27, 10:21 PM CDTTornado WarningLIX24 min
Mar 27, 10:59 PM CDTTornado WarningLIX31 min
Mar 27, 11:06 PM CDTMesoscale DiscussionSPC84 min
Mar 27, 11:31 PM CDTSevere Thunderstorm WarningLIX59 min
Mar 27, 11:50 PM CDTFlash Flood WarningLIX115 min
Mar 28, 12:14 AM CDTSevere Thunderstorm WarningLIX31 min
Mar 31, 8:58 AM CDTMesoscale DiscussionSPC92 min
Mar 31, 9:37 AM CDTSevere Thunderstorm WatchSPC7 hr
Mar 31, 11:54 AM CDTMesoscale DiscussionSPC96 min
Mar 31, 2:44 PM CDTMesoscale DiscussionSPC91 min
Apr 2, 8:01 AM CDTMesoscale DiscussionSPC59 min
Apr 2, 9:24 AM CDTTornado WatchSPC7 hr
Apr 2, 10:36 AM CDTHigh Wind WatchLIX4 hr
Apr 5, 11:45 AM CDTFreeze WatchLIX28 hr
Apr 6, 4:04 PM CDTFreeze WarningLIX12 hr
Apr 12, 1:02 PM CDTMesoscale DiscussionSPC88 min
Apr 12, 1:53 PM CDTTornado WatchSPC7 hr
Apr 12, 5:49 PM CDTMesoscale DiscussionSPC86 min
Apr 13, 6:33 AM CDTDense Fog AdvisoryLIX2 hr
Apr 13, 1:39 PM CDTMesoscale DiscussionSPC66 min
Apr 13, 4:33 PM CDTSevere Thunderstorm WarningLIX61 min
Apr 18, 11:12 PM CDTSevere Thunderstorm WarningLIX33 min
Apr 18, 11:46 PM CDTSevere Thunderstorm WarningLIX47 min
Apr 27, 11:06 PM CDTMesoscale DiscussionSPC84 min
May 3, 6:54 AM CDTMesoscale DiscussionSPC2 hr
May 3, 7:44 AM CDTSevere Thunderstorm WatchSPC8 hr
May 3, 9:24 AM CDTMesoscale DiscussionSPC66 min
May 3, 9:32 AM CDTSevere Thunderstorm WarningLIX58 min
May 4, 4:07 PM CDTRiver Flood WarningJAN39 days
May 6, 12:37 PM CDTSevere Thunderstorm WatchSPC6 hr
May 11, 2:20 PM CDTMesoscale DiscussionSPC55 min
May 11, 2:52 PM CDTSevere Thunderstorm WatchSPC5 hr
May 16, 2:15 PM CDTAreal Flood AdvisoryLIX72 days
May 27, 6:24 PM CDTSevere Thunderstorm WarningLIX66 min
Jun 20, 4:15 AM CDTHeat AdvisoryLIX5 days
Jun 24, 1:28 PM CDTMesoscale DiscussionSPC3 hr
Jun 26, 4:10 PM CDTHeat AdvisoryLIX63 hr
Jun 29, 12:18 PM CDTHeat AdvisoryLIX5 hr
Jul 3, 4:50 AM CDTHeat AdvisoryLIX14 hr
Jul 4, 3:45 AM CDTHeat AdvisoryLIX15 hr
Jul 5, 3:39 AM CDTHeat AdvisoryLIX16 hr
Jul 13, 4:45 AM CDTHeat AdvisoryLIX14 hr
Jul 26, 9:45 AM CDTMesoscale DiscussionSPC2 hr
Jul 28, 2:18 PM CDTMesoscale DiscussionSPC57 min
Jul 30, 10:12 AM CDTMesoscale DiscussionSPC2 hr
Aug 6, 10:11 AM CDTMesoscale DiscussionSPC94 min
Sep 6, 2:04 PM CDTAreal Flood AdvisoryLIX44 min
Oct 1, 11:45 PM CDTMesoscale DiscussionSPC90 min
Oct 2, 1:07 AM CDTTornado WatchSPC5 hr
Oct 2, 2:17 AM CDTSevere Thunderstorm WarningLIX43 min
Oct 8, 4:56 AM CDTDense Fog AdvisoryLIX4 hr
Oct 14, 12:14 PM CDTRiver Flood AdvisoryJAN34 hr
Oct 14, 10:07 PM CDTDense Fog AdvisoryLIX10 hr
Oct 15, 8:20 PM CDTAreal Flood AdvisoryLIX115 min
Oct 16, 11:33 AM CDTRiver Flood AdvisoryJAN36 hr
Oct 18, 10:32 AM CDTRiver Flood AdvisoryJAN36 hr
Oct 20, 3:11 PM CDTRiver Flood AdvisoryJAN69 hr
Oct 22, 11:27 AM CDTMesoscale DiscussionSPC93 min
Oct 22, 11:58 AM CDTTornado WatchSPC7 hr
Oct 22, 3:36 PM CDTMesoscale DiscussionSPC114 min
Oct 22, 6:26 PM CDTMesoscale DiscussionSPC34 min
Oct 28, 4:04 AM CDTDense Fog AdvisoryLIX5 hr
Oct 30, 10:22 AM CDTMesoscale DiscussionSPC83 min
Oct 30, 11:53 PM CDTRiver Flood AdvisoryJAN36 hr
Nov 1, 7:26 PM CSTRiver Flood AdvisoryJAN36 hr
Nov 3, 11:09 AM CSTRiver Flood AdvisoryJAN36 hr
Nov 5, 12:12 PM CSTRiver Flood AdvisoryJAN36 hr
Nov 7, 11:24 AM CSTRiver Flood AdvisoryJAN36 hr
Nov 9, 5:35 AM CSTWind AdvisoryLIX23 hr
Nov 9, 11:19 AM CSTRiver Flood WarningJAN6 days
Nov 24, 3:18 AM CSTDense Fog AdvisoryLIX6 hr
Nov 26, 10:30 AM CSTFreeze WarningLIX21 hr
Dec 3, 4:09 PM CSTWinter Storm WatchLIX13 hr
Dec 3, 4:09 PM CSTWinter Weather AdvisoryLIX34 hr
Dec 4, 10:20 AM CSTMesoscale DiscussionSPC6 hr
Dec 4, 12:13 PM CSTMesoscale DiscussionSPC4 hr
Dec 4, 3:42 PM CSTFreeze WarningLIX16 hr
Dec 4, 4:58 PM CSTWinter Storm WarningLIX9 hr
Dec 4, 5:22 PM CSTMesoscale DiscussionSPC6 hr
Dec 8, 5:00 AM CSTFlash Flood WatchLIX16 hr
Dec 8, 12:12 PM CSTMesoscale DiscussionSPC93 min
Dec 8, 1:25 PM CSTTornado WatchSPC8 hr
Dec 8, 4:32 PM CSTAreal Flood AdvisoryLIX118 min
Dec 8, 8:33 PM CSTTornado WatchSPC5 hr
Dec 11, 4:46 AM CSTFlash Flood WatchLIX48 hr
Dec 13, 3:49 AM CSTDense Fog AdvisoryLIX5 hr
Dec 13, 3:49 PM CSTFlash Flood WatchLIX50 hr
Dec 13, 3:49 PM CSTDense Fog AdvisoryLIX17 hr
Dec 14, 9:25 AM CSTDense Fog AdvisoryLIX95 min
Dec 14, 10:08 AM CSTMesoscale DiscussionSPC3 hr
Dec 14, 2:53 PM CSTAreal Flood AdvisoryLIX52 min
Dec 14, 3:01 PM CSTAreal Flood AdvisoryLIX59 min
Dec 14, 3:44 PM CSTFlash Flood WarningLIX3 hr
Dec 14, 5:57 PM CSTDense Fog AdvisoryLIX10 hr
Dec 15, 3:22 AM CSTMesoscale DiscussionSPC83 min
Dec 15, 7:07 AM CSTAreal Flood AdvisoryLIX113 min
Dec 15, 9:15 AM CSTAreal Flood AdvisoryLIX2 hr
Dec 24, 3:30 AM CSTMesoscale DiscussionSPC2 hr
Dec 24, 4:50 AM CSTTornado WatchSPC7 hr
Dec 24, 7:30 AM CSTMesoscale DiscussionSPC90 min
Dec 24, 9:34 AM CSTMesoscale DiscussionSPC56 min
Dec 24, 10:13 AM CSTMesoscale DiscussionSPC62 min

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 archive20082010

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.