Alert archive / Mississippi / Perry County

Weather alerts in Perry County, Mississippi, 2010

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

Perry County and its neighbors

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

Alerts
132
Warnings
42
Watches
41
Advisories
20
Busiest month
January25 alerts
Busiest day
April 24, 20107 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 Perry County in 2010 had a tornado report inside them.

Perry County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings70100%10%
Flash flood warnings3233%1100%22 min

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Mobile, AL: tornado warnings440100%60%
NWS Mobile, AL: severe thunderstorm warnings1502484%4353%18 min
NWS Mobile, AL: flash flood warnings241442%4188%81 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 2, 3:31 PM CSTHard Freeze WatchMOB22 hr
Jan 3, 4:19 AM CSTHard Freeze WarningMOB26 hr
Jan 3, 1:55 PM CSTHard Freeze WatchMOB17 hr
Jan 4, 4:32 AM CSTHard Freeze WarningMOB28 hr
Jan 4, 3:42 PM CSTHard Freeze WatchMOB13 hr
Jan 5, 4:26 AM CSTHard Freeze WarningMOB29 hr
Jan 6, 3:53 PM CSTHard Freeze WarningMOB42 hr
Jan 7, 5:23 AM CSTWinter Weather AdvisoryMOB13 hr
Jan 7, 5:45 AM CSTHard Freeze WatchMOB8 hr
Jan 7, 2:13 PM CSTHard Freeze WarningMOB44 hr
Jan 8, 4:31 AM CSTHard Freeze WatchMOB9 hr
Jan 8, 1:39 PM CSTHard Freeze WarningMOB43 hr
Jan 9, 5:59 AM CSTHard Freeze WarningMOB50 hr
Jan 10, 5:25 AM CSTHard Freeze WatchMOB24 hr
Jan 11, 5:28 AM CSTHard Freeze WatchMOB24 hr
Jan 11, 5:28 AM CSTHard Freeze WarningMOB28 hr
Jan 12, 5:51 AM CSTHard Freeze WarningMOB26 hr
Jan 20, 8:59 PM CSTMesoscale DiscussionSPC91 min
Jan 20, 9:36 PM CSTTornado WatchSPC7 hr
Jan 20, 11:39 PM CSTMesoscale DiscussionSPC66 min
Jan 21, 1:13 AM CSTMesoscale DiscussionSPC62 min
Jan 21, 2:09 AM CSTTornado WatchSPC7 hr
Jan 23, 11:54 PM CSTMesoscale DiscussionSPC96 min
Jan 24, 6:01 AM CSTMesoscale DiscussionSPC119 min
Jan 24, 6:28 AM CSTTornado WatchSPC6 hr
Feb 3, 3:00 PM CSTFlash Flood WatchMOB39 hr
Feb 4, 9:29 AM CSTRiver Flood WarningMOB8 days
Feb 4, 7:20 PM CSTFlash Flood WarningMOB115 min
Feb 4, 9:08 PM CSTFlash Flood WarningMOB72 min
Feb 10, 3:51 PM CSTWinter Storm WatchMOB22 hr
Feb 11, 1:21 PM CSTWinter Storm WarningMOB26 hr
Feb 11, 11:30 PM CSTMesoscale DiscussionSPC5 hr
Feb 12, 5:33 AM CSTMesoscale DiscussionSPC4 hr
Feb 14, 5:23 AM CSTWinter Weather AdvisoryMOB23 hr
Feb 16, 2:02 PM CSTHard Freeze WarningMOB18 hr
Feb 22, 12:19 AM CSTSevere Thunderstorm WarningMOB41 min
Mar 9, 2:48 PM CSTFlash Flood WatchMOB37 hr
Mar 10, 1:05 PM CSTTornado WatchSPC7 hr
Mar 10, 3:24 PM CSTMesoscale DiscussionSPC66 min
Mar 12, 2:10 AM CSTSevere Thunderstorm WatchSPC6 hr
Mar 24, 4:05 AM CDTDense Fog AdvisoryMOB5 hr
Apr 4, 3:31 AM CDTDense Fog AdvisoryMOB5 hr
Apr 4, 11:40 PM CDTDense Fog AdvisoryMOB9 hr
Apr 23, 4:25 AM CDTDense Fog AdvisoryMOB4 hr
Apr 23, 3:09 PM CDTWind AdvisoryMOB27 hr
Apr 23, 3:47 PM CDTMesoscale DiscussionSPC58 min
Apr 23, 7:39 PM CDTMesoscale DiscussionSPC36 min
Apr 24, 6:15 AM CDTTornado WatchSPC7 hr
Apr 24, 8:02 AM CDTSevere Thunderstorm WarningMOB43 min
Apr 24, 10:10 AM CDTTornado WarningMOB50 min
Apr 24, 10:28 AM CDTMesoscale DiscussionSPC92 min
Apr 24, 10:47 AM CDTTornado WarningMOB58 min
Apr 24, 12:47 PM CDTTornado WatchSPC7 hr
Apr 24, 7:19 PM CDTMesoscale DiscussionSPC56 min
May 2, 3:39 AM CDTFlash Flood WatchMOB36 hr
May 2, 8:01 AM CDTTornado WatchSPC7 hr
May 2, 10:24 AM CDTWind AdvisoryMOB9 hr
May 20, 10:12 PM CDTSevere Thunderstorm WarningMOB33 min
May 20, 10:48 PM CDTFlash Flood WarningMOB117 min
May 21, 1:06 PM CDTMesoscale DiscussionSPC54 min
May 21, 8:00 PM CDTSevere Thunderstorm WarningMOB45 min
May 29, 10:25 AM CDTMesoscale DiscussionSPC65 min
May 29, 12:11 PM CDTMesoscale DiscussionSPC34 min
May 29, 12:34 PM CDTSevere Thunderstorm WatchSPC7 hr
May 29, 4:36 PM CDTMesoscale DiscussionSPC54 min
May 30, 4:39 PM CDTMesoscale DiscussionSPC96 min
Jun 1, 5:18 PM CDTSevere Thunderstorm WarningMOB42 min
Jun 5, 4:28 PM CDTSevere Thunderstorm WarningMOB47 min
Jun 18, 1:06 PM CDTMesoscale DiscussionSPC114 min
Jun 19, 4:15 AM CDTHeat AdvisoryMOB14 hr
Jul 23, 8:03 AM CDTHeat AdvisoryMOB11 hr
Jul 25, 10:50 AM CDTMesoscale DiscussionSPC55 min
Jul 29, 1:50 PM CDTHeat AdvisoryMOB29 hr
Jul 29, 1:50 PM CDTHeat AdvisoryMOB53 hr
Jul 31, 4:47 AM CDTExcessive Heat WatchMOB11 hr
Jul 31, 3:40 PM CDTExcessive Heat WatchMOB23 hr
Jul 31, 3:40 PM CDTExcessive Heat WarningMOB27 hr
Aug 1, 2:22 PM CDTExcessive Heat WatchMOB38 hr
Aug 1, 2:22 PM CDTExcessive Heat WarningMOB28 hr
Aug 2, 3:21 PM CDTExcessive Heat WatchMOB24 hr
Aug 2, 3:21 PM CDTExcessive Heat WarningMOB27 hr
Aug 3, 3:35 PM CDTExcessive Heat WarningMOB26 hr
Aug 3, 5:17 PM CDTSevere Thunderstorm WarningMOB33 min
Aug 4, 3:42 PM CDTExcessive Heat WarningMOB26 hr
Aug 5, 3:24 PM CDTHeat AdvisoryMOB27 hr
Aug 7, 3:44 PM CDTHeat AdvisoryMOB26 hr
Aug 8, 5:10 AM CDTHeat AdvisoryMOB37 hr
Aug 15, 1:40 PM CDTHeat AdvisoryMOB4 hr
Aug 21, 3:58 PM CDTHeat AdvisoryMOB27 hr
Aug 22, 1:53 PM CDTMesoscale DiscussionSPC2 hr
Sep 30, 6:26 AM CDTFire Weather WatchMOB33 hr
Sep 30, 6:26 AM CDTRed Flag WarningMOB12 hr
Sep 30, 3:08 PM CDTFire Weather WatchMOB15 hr
Oct 1, 6:05 AM CDTRed Flag WarningMOB12 hr
Oct 1, 2:58 PM CDTFire Weather WatchMOB39 hr
Oct 1, 2:58 PM CDTRed Flag WarningMOB27 hr
Oct 2, 1:20 PM CDTRed Flag WarningMOB29 hr
Oct 3, 5:49 AM CDTFire Weather WatchMOB24 hr
Oct 4, 5:57 AM CDTFire Weather WatchMOB24 hr
Oct 4, 5:57 AM CDTRed Flag WarningMOB12 hr
Oct 5, 6:08 AM CDTFire Weather WatchMOB8 hr
Oct 5, 6:08 AM CDTRed Flag WarningMOB12 hr
Oct 5, 1:44 PM CDTFire Weather WatchMOB25 hr
Oct 5, 1:44 PM CDTRed Flag WarningMOB29 hr
Oct 12, 6:17 AM CDTFire Weather WatchMOB43 hr
Oct 24, 5:33 PM CDTMesoscale DiscussionSPC87 min
Oct 27, 6:40 PM CDTMesoscale DiscussionSPC65 min
Nov 4, 4:24 AM CDTFreeze WatchMOB34 hr
Nov 5, 2:45 PM CDTFreeze WatchMOB24 hr
Nov 5, 2:45 PM CDTFreeze WarningMOB17 hr
Nov 23, 4:03 PM CSTDense Fog AdvisoryMOB17 hr
Nov 29, 3:29 PM CSTMesoscale DiscussionSPC91 min
Nov 30, 3:17 AM CSTMesoscale DiscussionSPC58 min
Nov 30, 3:49 AM CSTTornado WatchSPC8 hr
Nov 30, 6:30 AM CSTMesoscale DiscussionSPC90 min
Dec 8, 3:46 PM CSTHard Freeze WarningMOB17 hr
Dec 11, 4:13 AM CSTHard Freeze WatchMOB25 hr
Dec 11, 6:33 AM CSTFire Weather WatchMOB31 hr
Dec 11, 3:11 PM CSTWind AdvisoryMOB48 hr
Dec 11, 6:13 PM CSTMesoscale DiscussionSPC92 min
Dec 11, 8:22 PM CSTMesoscale DiscussionSPC83 min
Dec 12, 4:45 AM CSTHard Freeze WatchMOB24 hr
Dec 12, 4:45 AM CSTHard Freeze WarningMOB24 hr
Dec 12, 4:50 AM CSTWind Chill AdvisoryMOB23 hr
Dec 12, 1:55 PM CSTRed Flag WarningMOB28 hr
Dec 13, 4:22 AM CSTHard Freeze WarningMOB28 hr
Dec 26, 3:51 AM CSTHard Freeze WatchMOB10 hr
Dec 26, 3:51 AM CSTHard Freeze WatchMOB25 hr
Dec 27, 3:57 AM CSTHard Freeze WarningMOB28 hr
Dec 31, 9:42 AM CSTMesoscale DiscussionSPC2 hr
Dec 31, 11:39 AM CSTTornado WatchSPC7 hr
Dec 31, 2:58 PM CSTMesoscale DiscussionSPC92 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 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.