Alert archive / Mississippi / Chickasaw County

Weather alerts in Chickasaw County, Mississippi, 2011

250 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Chickasaw County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts
250
Warnings
90
Watches
45
Advisories
36
Busiest month
April92 alerts
Busiest day
April 27, 201131 alerts

Over time

By month

Warning verification

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

6 of 9 tornado warnings covering Chickasaw County in 2011 had a tornado report inside them; 5 of 5 tornado reports fell inside a warning, on average 23 minutes after it went out.

Chickasaw County, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings9633%5100%23 min
Severe thunderstorm warnings552260%956%13 min
Flash flood warnings17382%0

Each office's whole area, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Memphis, TN: tornado warnings1824177%5487%27 min
NWS Memphis, TN: severe thunderstorm warnings70930257%80776%27668 min
NWS Memphis, TN: flash flood warnings1673678%9277%159 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
Dec 31, 10:09 PM CSTSevere Thunderstorm WarningMEG145 days
Dec 31, 10:18 PM CSTFlash Flood WarningMEG3 hr
Dec 31, 10:32 PM CSTFlash Flood WatchMEG5 hr
Dec 31, 10:46 PM CSTTornado WatchSPC5 hr
Dec 31, 11:11 PM CSTSpecial Weather StatementMEG34 min
Jan 1, 1:13 AM CSTFlash Flood WarningMEG65 min
Jan 7, 1:50 PM CSTWinter Storm WatchMEG32 hr
Jan 8, 2:24 PM CSTWinter Storm WarningMEG38 hr
Jan 10, 4:30 AM CSTWinter Weather AdvisoryMEG28 hr
Jan 25, 3:46 AM CSTWinter Weather AdvisoryMEG26 hr
Jan 31, 5:23 AM CSTDense Fog AdvisoryMEG6 hr
Jan 31, 2:43 PM CSTWind AdvisoryMEG39 hr
Feb 3, 2:56 PM CSTWinter Storm WarningMEG18 hr
Feb 4, 5:28 AM CSTMesoscale DiscussionSPC6 hr
Feb 7, 3:29 PM CSTWinter Storm WatchMEG25 hr
Feb 8, 4:09 PM CSTWinter Storm WarningMEG30 hr
Feb 9, 3:03 PM CSTMesoscale DiscussionSPC4 hr
Feb 23, 2:34 AM CSTFlash Flood WatchMEG46 hr
Feb 24, 2:34 PM CSTTornado WatchSPC7 hr
Feb 24, 5:26 PM CSTMesoscale DiscussionSPC94 min
Feb 24, 8:11 PM CSTMesoscale DiscussionSPC64 min
Feb 24, 8:55 PM CSTSevere Thunderstorm WarningMEG50 min
Feb 24, 9:01 PM CSTFlash Flood WarningMEG116 min
Feb 24, 10:38 PM CSTMesoscale DiscussionSPC97 min
Feb 28, 5:28 AM CSTMesoscale DiscussionSPC62 min
Feb 28, 5:47 AM CSTMesoscale DiscussionSPC28 min
Feb 28, 5:59 AM CSTTornado WatchSPC7 hr
Feb 28, 11:25 AM CSTMesoscale DiscussionSPC95 min
Mar 4, 3:47 AM CSTFlash Flood WatchMEG36 hr
Mar 8, 9:34 AM CSTFlood WatchMEG55 min
Mar 8, 10:29 AM CSTFlash Flood WatchMEG17 hr
Mar 14, 12:49 PM CDTMesoscale DiscussionSPC56 min
Mar 23, 10:23 AM CDTWind AdvisoryMEG9 hr
Mar 24, 3:41 AM CDTFrost AdvisoryMEG28 hr
Mar 26, 10:21 AM CDTMesoscale DiscussionSPC54 min
Mar 26, 2:27 PM CDTMesoscale DiscussionSPC63 min
Mar 26, 3:27 PM CDTTornado WatchSPC7 hr
Mar 26, 8:32 PM CDTMesoscale DiscussionSPC58 min
Mar 26, 9:33 PM CDTMesoscale DiscussionSPC27 min
Mar 26, 9:37 PM CDTSevere Thunderstorm WarningMEG53 min
Mar 27, 8:18 PM CDTSpecial Weather StatementMEG42 min
Mar 27, 11:09 PM CDTSevere Thunderstorm WarningMEG51 min
Mar 27, 11:58 PM CDTSpecial Weather StatementMEG32 min
Mar 28, 12:56 AM CDTSevere Thunderstorm WarningMEG49 min
Mar 28, 1:38 AM CDTSpecial Weather StatementMEG52 min
Mar 29, 6:26 PM CDTSevere Thunderstorm WatchSPC8 hr
Mar 29, 7:29 PM CDTSevere Thunderstorm WarningMEG47 min
Mar 29, 7:40 PM CDTMesoscale DiscussionSPC95 min
Mar 29, 10:13 PM CDTSpecial Weather StatementMEG47 min
Mar 29, 11:39 PM CDTMesoscale DiscussionSPC2 hr
Apr 2, 3:42 PM CDTWind AdvisoryMEG48 hr
Apr 4, 7:22 AM CDTTornado WatchSPC7 hr
Apr 4, 10:25 AM CDTMesoscale DiscussionSPC2 hr
Apr 4, 2:16 PM CDTSpecial Weather StatementMEG29 min
Apr 4, 2:57 PM CDTSpecial Weather StatementMEG33 min
Apr 11, 4:43 AM CDTWind AdvisoryMEG12 hr
Apr 11, 8:58 AM CDTMesoscale DiscussionSPC62 min
Apr 11, 9:46 AM CDTMesoscale DiscussionSPC29 min
Apr 11, 10:31 AM CDTTornado WatchSPC6 hr
Apr 11, 10:41 AM CDTMesoscale DiscussionSPC64 min
Apr 11, 12:37 PM CDTMesoscale DiscussionSPC53 min
Apr 11, 3:56 PM CDTMesoscale DiscussionSPC34 min
Apr 14, 11:23 AM CDTWind AdvisoryMEG32 hr
Apr 15, 2:19 AM CDTTornado WatchSPC8 hr
Apr 15, 4:21 AM CDTMesoscale DiscussionSPC84 min
Apr 15, 7:34 AM CDTSevere Thunderstorm WarningMEG56 min
Apr 15, 8:10 AM CDTSevere Thunderstorm WarningMEG65 min
Apr 15, 1:30 PM CDTMesoscale DiscussionSPC2 hr
Apr 15, 2:09 PM CDTTornado WatchSPC7 hr
Apr 15, 3:10 PM CDTSevere Thunderstorm WarningMEG50 min
Apr 15, 3:35 PM CDTMesoscale DiscussionSPC85 min
Apr 15, 5:57 PM CDTMesoscale DiscussionSPC2 hr
Apr 18, 4:04 PM CDTWind AdvisoryMEG27 hr
Apr 19, 9:39 PM CDTMesoscale DiscussionSPC66 min
Apr 19, 10:14 PM CDTTornado WatchSPC7 hr
Apr 19, 11:56 PM CDTMesoscale DiscussionSPC94 min
Apr 20, 3:10 AM CDTSevere Thunderstorm WarningMEG50 min
Apr 20, 3:18 AM CDTFlash Flood WatchMEG30 hr
Apr 20, 3:29 AM CDTSevere Thunderstorm WarningMEG46 min
Apr 20, 3:59 AM CDTSevere Thunderstorm WarningMEG46 min
Apr 20, 4:36 AM CDTSevere Thunderstorm WarningMEG39 min
Apr 20, 4:39 AM CDTSevere Thunderstorm WarningMEG51 min
Apr 20, 4:56 AM CDTFlash Flood WarningMEG2 hr
Apr 20, 8:16 AM CDTSevere Thunderstorm WarningMEG27 min
Apr 20, 11:27 AM CDTSevere Thunderstorm WarningMEG63 min
Apr 20, 12:24 PM CDTSevere Thunderstorm WarningMEG51 min
Apr 20, 12:57 PM CDTFlash Flood WarningMEG3 hr
Apr 20, 1:02 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 20, 1:05 PM CDTSevere Thunderstorm WarningMEG55 min
Apr 20, 1:13 PM CDTSevere Thunderstorm WarningMEG62 min
Apr 20, 3:34 PM CDTSevere Thunderstorm WarningMEG24 min
Apr 20, 5:24 PM CDTMesoscale DiscussionSPC96 min
Apr 20, 5:34 PM CDTSevere Thunderstorm WarningMEG41 min
Apr 20, 5:56 PM CDTMesoscale DiscussionSPC2 hr
Apr 20, 6:51 PM CDTMesoscale DiscussionSPC84 min
Apr 20, 7:45 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 20, 8:07 PM CDTSevere Thunderstorm WarningMEG38 min
Apr 20, 8:10 PM CDTFlash Flood WarningMEG3 hr
Apr 20, 8:43 PM CDTTornado WarningMEG47 min
Apr 20, 9:01 PM CDTFlash Flood WarningMEG3 hr
Apr 23, 9:31 AM CDTFlash Flood WatchMEG4 days
Apr 25, 8:37 AM CDTMesoscale DiscussionSPC53 min
Apr 25, 9:17 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 25, 1:15 PM CDTMesoscale DiscussionSPC60 min
Apr 25, 11:05 PM CDTMesoscale DiscussionSPC115 min
Apr 25, 11:42 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 26, 12:01 AM CDTSevere Thunderstorm WarningMEG59 min
Apr 26, 12:41 AM CDTTornado WarningMEG19 min
Apr 26, 12:58 AM CDTSevere Thunderstorm WarningMEG64 min
Apr 26, 3:02 PM CDTTornado Watch PDSSPC7 hr
Apr 26, 4:13 PM CDTWind AdvisoryMEG13 hr
Apr 26, 7:59 PM CDTMesoscale DiscussionSPC2 hr
Apr 26, 9:33 PM CDTTornado Watch PDSSPC7 hr
Apr 26, 11:33 PM CDTMesoscale DiscussionSPC117 min
Apr 27, 1:54 AM CDTSevere Thunderstorm WarningMEG36 min
Apr 27, 2:26 AM CDTTornado WatchSPC6 hr
Apr 27, 2:27 AM CDTSevere Thunderstorm WarningMEG48 min
Apr 27, 2:55 AM CDTTornado WarningMEG65 min
Apr 27, 3:11 AM CDTSevere Thunderstorm WarningMEG39 min
Apr 27, 6:25 AM CDTMesoscale DiscussionSPC65 min
Apr 27, 7:14 AM CDTFlash Flood WarningMEG4 hr
Apr 27, 8:08 AM CDTTornado WatchSPC6 hr
Apr 27, 8:58 AM CDTSevere Thunderstorm WarningMEG47 min
Apr 27, 9:45 AM CDTSevere Thunderstorm WarningMEG45 min
Apr 27, 10:45 AM CDTMesoscale DiscussionSPC90 min
Apr 27, 11:02 AM CDTTornado Watch PDSSPC8 hr
Apr 27, 11:18 AM CDTFlash Flood WarningMEG6 hr
Apr 27, 1:45 PM CDTSevere Thunderstorm WarningMEG45 min
Apr 27, 2:01 PM CDTTornado WarningMEG44 min
Apr 27, 2:29 PM CDTTornado WarningMEG46 min
Apr 27, 2:31 PM CDTTornado WarningMEG44 min
Apr 27, 2:35 PM CDTTornado WarningMEG40 min
Apr 27, 2:56 PM CDTMesoscale DiscussionSPC2 hr
Apr 27, 2:58 PM CDTWind AdvisoryMEG6 hr
Apr 27, 3:01 PM CDTTornado WarningMEG59 min
Apr 27, 3:21 PM CDTTornado WarningMEG54 min
Apr 27, 4:34 PM CDTSevere Thunderstorm WarningMEG41 min
Apr 27, 4:41 PM CDTSevere Thunderstorm WarningMEG37 min
Apr 27, 5:01 PM CDTMesoscale DiscussionSPC89 min
Apr 27, 5:05 PM CDTFlash Flood WarningMEG85 min
Apr 27, 5:47 PM CDTSevere Thunderstorm WarningMEG21 min
Apr 27, 6:27 PM CDTAreal Flood WarningMEG36 hr
May 2, 1:51 PM CDTMesoscale DiscussionSPC2 hr
May 13, 12:31 PM CDTSevere Thunderstorm WatchSPC6 hr
May 13, 2:44 PM CDTMesoscale DiscussionSPC2 hr
May 13, 4:29 PM CDTSevere Thunderstorm WarningMEG61 min
May 13, 5:54 PM CDTSevere Thunderstorm WatchSPC6 hr
May 13, 7:58 PM CDTMesoscale DiscussionSPC62 min
May 25, 12:28 PM CDTTornado Watch PDSSPC8 hr
May 25, 8:33 PM CDTTornado WatchSPC7 hr
May 25, 9:51 PM CDTSevere Thunderstorm WarningMEG54 min
May 25, 10:27 PM CDTMesoscale DiscussionSPC2 hr
May 25, 10:37 PM CDTSevere Thunderstorm WarningMEG53 min
Jun 3, 11:20 AM CDTHeat AdvisoryMEG52 hr
Jun 13, 10:05 AM CDTSevere Thunderstorm WatchSPC8 hr
Jun 13, 3:16 PM CDTSevere Thunderstorm WarningMEG59 min
Jun 13, 3:25 PM CDTMesoscale DiscussionSPC35 min
Jun 13, 4:05 PM CDTSevere Thunderstorm WarningMEG42 min
Jun 15, 10:54 AM CDTMesoscale DiscussionSPC2 hr
Jun 16, 12:23 AM CDTSevere Thunderstorm WarningMEG52 min
Jun 16, 2:25 PM CDTSevere Thunderstorm WarningMEG50 min
Jun 16, 2:51 PM CDTFlash Flood WarningMEG114 min
Jun 16, 3:13 PM CDTMesoscale DiscussionSPC62 min
Jun 16, 3:28 PM CDTSevere Thunderstorm WarningMEG47 min
Jun 16, 3:48 PM CDTFlash Flood WarningMEG63 min
Jun 16, 3:51 PM CDTSevere Thunderstorm WarningMEG39 min
Jun 17, 8:50 AM CDTSevere Thunderstorm WarningMEG40 min
Jun 21, 11:58 AM CDTMesoscale DiscussionSPC62 min
Jun 21, 1:06 PM CDTSevere Thunderstorm WarningMEG39 min
Jun 21, 1:56 PM CDTSevere Thunderstorm WarningMEG49 min
Jun 22, 11:57 AM CDTMesoscale DiscussionSPC2 hr
Jun 22, 12:49 PM CDTSpecial Weather StatementMEG41 min
Jun 22, 1:05 PM CDTSevere Thunderstorm WarningMEG40 min
Jun 22, 1:40 PM CDTSpecial Weather StatementMEG50 min
Jun 24, 12:58 PM CDTMesoscale DiscussionSPC2 hr
Jun 24, 1:49 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 24, 2:53 PM CDTSevere Thunderstorm WarningMEG52 min
Jun 24, 3:32 PM CDTSevere Thunderstorm WarningMEG46 min
Jun 24, 3:42 PM CDTMesoscale DiscussionSPC93 min
Jun 24, 3:46 PM CDTFlash Flood WarningMEG108 min
Jun 26, 12:05 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 26, 2:33 PM CDTMesoscale DiscussionSPC87 min
Jun 26, 5:29 PM CDTMesoscale DiscussionSPC46 min
Jun 28, 7:06 AM CDTSevere Thunderstorm WatchSPC5 hr
Jun 28, 10:15 AM CDTSpecial Weather StatementMEG60 min
Jun 28, 10:59 AM CDTSpecial Weather StatementMEG46 min
Jul 4, 12:52 PM CDTMesoscale DiscussionSPC53 min
Jul 4, 3:34 PM CDTSpecial Weather StatementMEG26 min
Jul 4, 4:08 PM CDTSpecial Weather StatementMEG52 min
Jul 4, 4:38 PM CDTSevere Thunderstorm WarningMEG37 min
Jul 7, 11:46 AM CDTMesoscale DiscussionSPC89 min
Jul 8, 3:42 PM CDTHeat AdvisoryMEG46 hr
Jul 8, 7:53 PM CDTExcessive Heat WatchMEG20 hr
Jul 10, 4:20 AM CDTExcessive Heat WarningMEG3 days
Jul 12, 4:17 AM CDTHeat AdvisoryMEG55 hr
Jul 14, 1:04 PM CDTMesoscale DiscussionSPC116 min
Jul 18, 3:11 PM CDTHeat AdvisoryMEG6 days
Jul 26, 3:16 PM CDTHeat AdvisoryMEG51 hr
Jul 30, 2:26 PM CDTHeat AdvisoryMEG3 days
Aug 1, 3:06 AM CDTExcessive Heat WatchMEG4 days
Aug 2, 3:55 AM CDTExcessive Heat WarningMEG5 days
Aug 2, 4:02 PM CDTExcessive Heat WatchMEG48 hr
Aug 4, 3:06 PM CDTMesoscale DiscussionSPC54 min
Aug 4, 3:19 PM CDTSevere Thunderstorm WarningMEG56 min
Aug 4, 3:41 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 4, 4:15 PM CDTSevere Thunderstorm WarningMEG75 min
Aug 4, 5:10 PM CDTSevere Thunderstorm WarningMEG50 min
Aug 4, 5:34 PM CDTSpecial Weather StatementMEG26 min
Aug 4, 5:54 PM CDTFlash Flood WarningMEG116 min
Aug 4, 5:55 PM CDTSpecial Weather StatementMEG35 min
Aug 4, 6:06 PM CDTMesoscale DiscussionSPC54 min
Aug 4, 6:14 PM CDTSevere Thunderstorm WarningMEG61 min
Aug 4, 6:50 PM CDTFlash Flood WarningMEG74 min
Aug 5, 12:06 PM CDTMesoscale DiscussionSPC54 min
Aug 5, 2:59 PM CDTExcessive Heat WarningMEG3 days
Aug 5, 3:21 PM CDTSpecial Weather StatementMEG39 min
Aug 6, 4:12 AM CDTHeat AdvisoryMEG63 hr
Aug 7, 6:10 PM CDTMesoscale DiscussionSPC2 hr
Aug 10, 5:15 PM CDTSpecial Weather StatementMEG30 min
Aug 10, 5:34 PM CDTMesoscale DiscussionSPC86 min
Aug 18, 2:38 AM CDTHeat AdvisoryMEG13 hr
Aug 20, 2:44 PM CDTSevere Thunderstorm WarningMEG22 min
Sep 3, 2:09 PM CDTFlood WatchMEG30 hr
Sep 4, 2:19 PM CDTWind AdvisoryMEG30 hr
Sep 4, 8:24 PM CDTFlash Flood WatchMEG26 hr
Sep 5, 2:08 AM CDTFlash Flood WarningMEG16 hr
Sep 5, 5:49 PM CDTFlash Flood WarningMEG97 min
Sep 11, 5:00 PM CDTMesoscale DiscussionSPC90 min
Sep 21, 4:16 AM CDTDense Fog AdvisoryMEG6 hr
Oct 12, 5:35 AM CDTDense Fog AdvisoryMEG3 hr
Oct 20, 11:01 AM CDTFrost AdvisoryMEG22 hr
Oct 21, 3:22 PM CDTFrost AdvisoryMEG17 hr
Oct 21, 3:22 PM CDTFreeze WarningMEG18 hr
Oct 24, 3:11 AM CDTDense Fog AdvisoryMEG8 hr
Oct 25, 3:39 AM CDTDense Fog AdvisoryMEG5 hr
Oct 28, 3:37 PM CDTFrost AdvisoryMEG18 hr
Oct 28, 3:37 PM CDTFreeze WatchMEG24 hr
Oct 29, 3:20 PM CDTFreeze WarningMEG18 hr
Oct 31, 3:40 PM CDTFrost AdvisoryMEG17 hr
Nov 4, 11:09 PM CDTDense Fog AdvisoryMEG11 hr
Nov 9, 2:27 PM CSTFreeze WatchMEG14 hr
Nov 10, 4:09 AM CSTFreeze WarningMEG29 hr
Nov 12, 2:50 PM CSTWind AdvisoryMEG27 hr
Nov 24, 9:08 PM CSTDense Fog AdvisoryMEG12 hr
Nov 28, 3:36 AM CSTWinter Weather AdvisoryMEG32 hr
Dec 2, 3:29 PM CSTFlood WatchMEG72 hr
Dec 6, 6:44 PM CSTWinter Weather AdvisoryMEG17 hr
Dec 8, 4:12 AM CSTFreezing Fog AdvisoryMEG5 hr
Dec 13, 9:13 PM CSTDense Fog AdvisoryMEG11 hr
Dec 21, 1:35 AM CSTMesoscale DiscussionSPC85 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 archive20102012

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.