Alert archive / Alabama / Clarke County

Weather alerts in Clarke County, Alabama, 2009

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

Clarke County and its neighbors

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

Alerts
268
Warnings
123
Watches
51
Advisories
44
Busiest month
March47 alerts
Busiest day
April 13, 200912 alerts

Over time

By month

Warning verification

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

1 of 9 tornado warnings covering Clarke County in 2009 had a tornado report inside them.

Clarke County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings9189%0
Severe thunderstorm warnings46883%1464%32 min
Flash flood warnings18856%967%73 min

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Mobile, AL: tornado warnings53296%560%23 min
NWS Mobile, AL: severe thunderstorm warnings3135184%9273%24 min
NWS Mobile, AL: flash flood warnings772864%5878%84 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, 11:59 PM CSTDense Fog AdvisoryMOB10 hr
Jan 3, 12:32 PM CSTMesoscale DiscussionSPC88 min
Jan 3, 2:17 PM CSTSevere Thunderstorm WarningMOB20 min
Jan 4, 10:24 PM CSTDense Fog AdvisoryMOB11 hr
Jan 5, 2:37 PM CSTFlash Flood WatchMOB37 hr
Jan 6, 9:28 AM CSTRiver Flood WarningMOB12 days
Jan 6, 9:29 AM CSTRiver Flood WarningMOB13 days
Jan 6, 9:43 AM CSTMesoscale DiscussionSPC2 hr
Jan 6, 2:03 PM CSTTornado WatchSPC5 hr
Jan 6, 3:57 PM CSTMesoscale DiscussionSPC93 min
Jan 10, 4:45 PM CSTTornado WarningMOB30 min
Jan 10, 4:50 PM CSTMesoscale DiscussionSPC85 min
Jan 10, 5:13 PM CSTTornado WarningMOB37 min
Jan 10, 6:41 PM CSTAreal Flood AdvisoryMOB3 hr
Jan 10, 6:41 PM CSTSevere Thunderstorm WarningMOB29 min
Jan 10, 7:38 PM CSTSevere Thunderstorm WarningMOB22 min
Jan 13, 1:52 PM CSTFire Weather WatchMOB40 hr
Jan 13, 1:52 PM CSTRed Flag WarningMOB28 hr
Jan 13, 3:25 PM CSTHard Freeze WatchMOB29 hr
Jan 14, 2:09 PM CSTFire Weather WatchMOB16 hr
Jan 14, 8:44 PM CSTHard Freeze WarningMOB36 hr
Jan 15, 4:41 AM CSTHard Freeze WatchMOB7 hr
Jan 15, 6:08 AM CSTRed Flag WarningMOB42 hr
Jan 15, 12:10 PM CSTHard Freeze WarningMOB45 hr
Jan 15, 2:42 PM CSTFire Weather WatchMOB38 hr
Jan 16, 5:32 AM CSTRed Flag WarningMOB36 hr
Jan 19, 9:15 PM CSTHard Freeze WatchMOB6 hr
Jan 20, 3:18 AM CSTHard Freeze WarningMOB29 hr
Jan 20, 2:33 PM CSTRed Flag WarningMOB27 hr
Jan 21, 2:57 PM CSTHard Freeze WarningMOB17 hr
Jan 26, 4:20 AM CSTDense Fog AdvisoryMOB5 hr
Jan 26, 11:02 PM CSTDense Fog AdvisoryMOB10 hr
Feb 2, 5:44 AM CSTFire Weather WatchMOB24 hr
Feb 2, 5:44 AM CSTRed Flag WarningMOB60 hr
Feb 2, 2:52 PM CSTFreeze WatchMOB13 hr
Feb 3, 4:11 AM CSTHard Freeze WatchMOB24 hr
Feb 3, 4:11 AM CSTHard Freeze WarningMOB28 hr
Feb 3, 5:53 AM CSTFire Weather WatchMOB24 hr
Feb 3, 5:53 AM CSTRed Flag WarningMOB60 hr
Feb 4, 4:08 AM CSTHard Freeze WarningMOB29 hr
Feb 4, 2:07 PM CSTHard Freeze WatchMOB15 hr
Feb 5, 5:16 AM CSTHard Freeze WarningMOB27 hr
Feb 11, 9:36 AM CSTMesoscale DiscussionSPC84 min
Feb 18, 2:51 PM CSTRed Flag WarningMOB51 hr
Feb 18, 3:22 PM CSTMesoscale DiscussionSPC83 min
Feb 18, 4:58 PM CSTMesoscale DiscussionSPC92 min
Feb 18, 5:11 PM CSTTornado WarningMOB26 min
Feb 18, 7:14 PM CSTMesoscale DiscussionSPC61 min
Feb 18, 7:22 PM CSTSevere Thunderstorm WarningMOB38 min
Feb 18, 7:42 PM CSTSevere Thunderstorm WatchSPC5 hr
Feb 22, 6:01 AM CSTFire Weather WatchMOB10 hr
Feb 22, 6:01 AM CSTRed Flag WarningMOB36 hr
Feb 23, 5:46 AM CSTRed Flag WarningMOB35 hr
Feb 27, 12:38 PM CSTTornado WatchSPC7 hr
Feb 27, 6:38 PM CSTMesoscale DiscussionSPC97 min
Feb 28, 5:40 AM CSTMesoscale DiscussionSPC2 hr
Feb 28, 10:34 AM CSTRiver Flood WarningMOB10 days
Feb 28, 10:34 AM CSTRiver Flood WarningMOB10 days
Feb 28, 3:02 PM CSTWind AdvisoryMOB27 hr
Mar 1, 6:31 AM CSTFire Weather WatchMOB32 hr
Mar 1, 8:49 AM CSTWinter Weather AdvisoryMOB5 hr
Mar 2, 2:39 PM CSTRed Flag WarningMOB27 hr
Mar 5, 10:27 PM CSTDense Fog AdvisoryMOB11 hr
Mar 7, 1:18 AM CSTDense Fog AdvisoryMOB8 hr
Mar 8, 5:02 AM CDTDense Fog AdvisoryMOB4 hr
Mar 9, 12:10 PM CDTDense Fog AdvisoryMOB23 hr
Mar 10, 11:47 PM CDTDense Fog AdvisoryMOB12 hr
Mar 14, 4:19 PM CDTRiver Flood WarningMOB8 days
Mar 15, 9:47 AM CDTAreal Flood AdvisoryMOB103 min
Mar 15, 12:23 PM CDTRiver Flood WarningMOB7 days
Mar 16, 9:00 AM CDTAreal Flood AdvisoryMOB6 hr
Mar 16, 9:03 AM CDTAreal Flood AdvisoryMOB6 hr
Mar 16, 2:42 PM CDTDense Fog AdvisoryMOB15 hr
Mar 25, 10:46 AM CDTRiver Flood WarningMOB15 days
Mar 25, 10:46 AM CDTRiver Flood WarningMOB15 days
Mar 25, 2:40 PM CDTFlash Flood WatchMOB70 hr
Mar 25, 11:38 PM CDTMesoscale DiscussionSPC97 min
Mar 26, 1:25 AM CDTMesoscale DiscussionSPC35 min
Mar 26, 1:36 AM CDTTornado WatchSPC9 hr
Mar 26, 3:40 AM CDTMesoscale DiscussionSPC95 min
Mar 26, 3:59 AM CDTSevere Thunderstorm WarningMOB46 min
Mar 26, 4:29 AM CDTSevere Thunderstorm WarningMOB16 min
Mar 26, 4:44 AM CDTSevere Thunderstorm WarningMOB46 min
Mar 26, 5:49 AM CDTSevere Thunderstorm WarningMOB39 min
Mar 26, 10:22 AM CDTRiver Flood WarningMOB10 days
Mar 26, 10:46 PM CDTAreal Flood WarningMOB6 hr
Mar 27, 12:48 AM CDTTornado WatchSPC7 hr
Mar 27, 1:07 AM CDTFlash Flood WarningMOB4 hr
Mar 27, 2:23 AM CDTMesoscale DiscussionSPC67 min
Mar 27, 4:19 AM CDTAreal Flood AdvisoryMOB116 min
Mar 27, 10:09 PM CDTTornado WatchSPC9 hr
Mar 27, 10:46 PM CDTSevere Thunderstorm WarningMOB44 min
Mar 27, 11:05 PM CDTFlash Flood WarningMOB115 min
Mar 27, 11:45 PM CDTSevere Thunderstorm WarningMOB28 min
Mar 27, 11:51 PM CDTMesoscale DiscussionSPC84 min
Mar 28, 12:10 AM CDTSevere Thunderstorm WarningMOB50 min
Mar 28, 1:01 AM CDTFlash Flood WarningMOB119 min
Mar 28, 3:14 AM CDTMesoscale DiscussionSPC61 min
Mar 28, 4:25 AM CDTMesoscale DiscussionSPC35 min
Mar 28, 4:50 AM CDTTornado WatchSPC5 hr
Mar 28, 12:53 PM CDTAreal Flood WarningMOB12 hr
Mar 28, 11:31 PM CDTAreal Flood WarningMOB8 hr
Mar 31, 11:38 AM CDTSevere Thunderstorm WarningMOB31 min
Mar 31, 12:25 PM CDTSevere Thunderstorm WarningMOB50 min
Mar 31, 1:05 PM CDTSevere Thunderstorm WatchSPC8 hr
Mar 31, 5:12 PM CDTMesoscale DiscussionSPC93 min
Mar 31, 9:52 PM CDTMesoscale DiscussionSPC113 min
Mar 31, 11:29 PM CDTSevere Thunderstorm WarningMOB46 min
Apr 2, 6:29 AM CDTTornado WatchSPC8 hr
Apr 2, 1:09 PM CDTMesoscale DiscussionSPC66 min
Apr 2, 1:33 PM CDTTornado WatchSPC5 hr
Apr 2, 2:38 PM CDTSevere Thunderstorm WarningMOB52 min
Apr 2, 3:28 PM CDTSevere Thunderstorm WarningMOB62 min
Apr 5, 5:57 AM CDTMesoscale DiscussionSPC93 min
Apr 5, 6:20 AM CDTFreeze WatchMOB32 hr
Apr 5, 3:46 PM CDTWind AdvisoryMOB27 hr
Apr 5, 4:02 PM CDTMesoscale DiscussionSPC58 min
Apr 6, 5:37 AM CDTFreeze WatchMOB24 hr
Apr 6, 2:06 PM CDTFreeze WarningMOB16 hr
Apr 7, 5:43 AM CDTFreeze WarningMOB26 hr
Apr 10, 9:25 PM CDTSevere Thunderstorm WarningMOB65 min
Apr 12, 8:07 PM CDTMesoscale DiscussionSPC53 min
Apr 12, 8:30 PM CDTTornado WatchSPC6 hr
Apr 12, 10:32 PM CDTSevere Thunderstorm WarningMOB58 min
Apr 12, 10:34 PM CDTTornado WarningMOB41 min
Apr 12, 10:42 PM CDTMesoscale DiscussionSPC93 min
Apr 12, 11:17 PM CDTSevere Thunderstorm WarningMOB58 min
Apr 13, 12:55 AM CDTFlash Flood WarningMOB3 hr
Apr 13, 2:33 AM CDTTornado WatchSPC7 hr
Apr 13, 2:52 AM CDTSevere Thunderstorm WarningMOB53 min
Apr 13, 3:50 AM CDTFlash Flood WarningMOB3 hr
Apr 13, 11:15 AM CDTMesoscale DiscussionSPC90 min
Apr 13, 6:55 PM CDTMesoscale DiscussionSPC95 min
Apr 19, 12:43 PM CDTMesoscale DiscussionSPC3 hr
Apr 19, 2:19 PM CDTTornado WatchSPC7 hr
Apr 19, 2:36 PM CDTTornado WarningMOB39 min
Apr 19, 4:46 PM CDTMesoscale DiscussionSPC89 min
Apr 19, 5:20 PM CDTTornado WarningMOB40 min
Apr 19, 5:39 PM CDTTornado WarningMOB40 min
Apr 19, 6:04 PM CDTTornado WarningMOB15 min
Apr 19, 6:18 PM CDTSevere Thunderstorm WarningMOB27 min
Apr 19, 6:44 PM CDTTornado WarningMOB46 min
Apr 19, 6:51 PM CDTMesoscale DiscussionSPC54 min
Apr 24, 3:07 AM CDTDense Fog AdvisoryMOB5 hr
May 3, 10:56 AM CDTMesoscale DiscussionSPC64 min
May 3, 11:35 AM CDTSevere Thunderstorm WatchSPC5 hr
May 3, 12:59 PM CDTSevere Thunderstorm WarningMOB46 min
May 3, 1:31 PM CDTSevere Thunderstorm WarningMOB44 min
May 4, 1:30 AM CDTMesoscale DiscussionSPC3 hr
May 4, 2:34 AM CDTTornado WatchSPC5 hr
May 4, 3:40 AM CDTSevere Thunderstorm WarningMOB65 min
May 4, 4:58 AM CDTMesoscale DiscussionSPC2 hr
May 4, 5:04 AM CDTFlash Flood WatchMOB7 hr
May 4, 6:55 AM CDTFlash Flood WarningMOB3 hr
May 4, 7:30 AM CDTSevere Thunderstorm WarningMOB60 min
May 4, 3:24 PM CDTMesoscale DiscussionSPC66 min
May 5, 4:51 PM CDTSevere Thunderstorm WarningMOB21 min
May 5, 6:11 PM CDTSevere Thunderstorm WarningMOB64 min
May 5, 6:22 PM CDTSevere Thunderstorm WarningMOB28 min
May 6, 9:04 AM CDTMesoscale DiscussionSPC56 min
May 6, 9:38 AM CDTRiver Flood WarningMOB8 days
May 6, 9:38 AM CDTRiver Flood WarningMOB7 days
May 6, 12:37 PM CDTSevere Thunderstorm WatchSPC6 hr
May 6, 2:52 PM CDTFlash Flood WarningMOB109 min
May 6, 3:16 PM CDTFlash Flood WarningMOB2 hr
May 6, 3:29 PM CDTSevere Thunderstorm WarningMOB45 min
May 6, 3:34 PM CDTFlash Flood WatchMOB5 hr
May 6, 3:54 PM CDTSevere Thunderstorm WarningMOB66 min
May 7, 8:19 PM CDTAreal Flood AdvisoryMOB56 min
May 10, 7:29 PM CDTMesoscale DiscussionSPC61 min
May 10, 7:50 PM CDTSevere Thunderstorm WatchSPC5 hr
May 10, 10:42 PM CDTSevere Thunderstorm WarningMOB43 min
May 11, 5:48 PM CDTSevere Thunderstorm WarningMOB43 min
May 13, 9:11 PM CDTRiver Flood WarningMOB14 hr
May 16, 2:32 PM CDTSevere Thunderstorm WarningMOB28 min
May 24, 3:26 PM CDTAreal Flood AdvisoryMOB3 hr
May 27, 3:36 PM CDTSevere Thunderstorm WarningMOB24 min
May 27, 3:55 PM CDTSevere Thunderstorm WarningMOB35 min
May 27, 4:13 PM CDTFlash Flood WarningMOB92 min
May 27, 4:36 PM CDTSevere Thunderstorm WarningMOB24 min
May 27, 5:17 PM CDTSevere Thunderstorm WarningMOB28 min
May 27, 6:07 PM CDTAreal Flood AdvisoryMOB3 hr
May 27, 6:15 PM CDTSevere Thunderstorm WarningMOB30 min
May 27, 6:39 PM CDTSevere Thunderstorm WarningMOB36 min
May 27, 7:50 PM CDTSevere Thunderstorm WarningMOB40 min
Jun 4, 3:16 PM CDTFlash Flood WarningMOB89 min
Jun 21, 4:00 AM CDTHeat AdvisoryMOB63 hr
Jun 23, 5:20 PM CDTSevere Thunderstorm WarningMOB40 min
Jun 24, 1:28 PM CDTMesoscale DiscussionSPC3 hr
Jun 27, 4:10 PM CDTExcessive Heat WatchMOB7 hr
Jun 27, 11:30 PM CDTHeat AdvisoryMOB18 hr
Jul 5, 12:40 PM CDTMesoscale DiscussionSPC65 min
Jul 5, 1:06 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 5, 6:12 PM CDTMesoscale DiscussionSPC63 min
Jul 13, 9:32 AM CDTMesoscale DiscussionSPC88 min
Jul 31, 6:05 PM CDTAreal Flood AdvisoryMOB47 min
Jul 31, 6:14 PM CDTSevere Thunderstorm WarningMOB46 min
Aug 21, 4:16 PM CDTAreal Flood AdvisoryMOB4 hr
Aug 30, 12:52 PM CDTMesoscale DiscussionSPC113 min
Sep 13, 4:49 PM CDTAreal Flood AdvisoryMOB116 min
Sep 15, 11:14 AM CDTMesoscale DiscussionSPC2 hr
Sep 16, 12:13 PM CDTMesoscale DiscussionSPC2 hr
Sep 16, 6:27 PM CDTFlash Flood WarningMOB2 hr
Sep 18, 9:16 PM CDTAreal Flood AdvisoryMOB119 min
Sep 18, 10:52 PM CDTAreal Flood AdvisoryMOB113 min
Sep 18, 11:13 PM CDTFlash Flood WarningMOB2 hr
Sep 20, 11:08 AM CDTAreal Flood AdvisoryMOB112 min
Sep 21, 4:25 AM CDTFlash Flood WatchMOB39 hr
Sep 21, 10:37 AM CDTAreal Flood AdvisoryMOB3 hr
Sep 21, 11:02 AM CDTRiver Flood WarningMOB10 days
Sep 21, 11:02 AM CDTRiver Flood WarningMOB11 days
Sep 22, 6:42 PM CDTAreal Flood AdvisoryMOB2 hr
Oct 9, 4:53 PM CDTSevere Thunderstorm WarningMOB52 min
Oct 9, 5:24 PM CDTSevere Thunderstorm WarningMOB51 min
Oct 12, 10:59 AM CDTRiver Flood WarningMOB12 days
Oct 12, 10:59 AM CDTRiver Flood WarningMOB12 days
Oct 18, 6:11 AM CDTFrost AdvisoryMOB27 hr
Oct 28, 3:24 AM CDTDense Fog AdvisoryMOB3 hr
Oct 30, 12:22 PM CDTTornado WatchSPC8 hr
Oct 30, 2:11 PM CDTMesoscale DiscussionSPC94 min
Oct 30, 4:57 PM CDTMesoscale DiscussionSPC93 min
Oct 30, 5:20 PM CDTTornado WatchSPC3 hr
Oct 30, 7:58 PM CDTMesoscale DiscussionSPC92 min
Nov 8, 8:43 PM CSTInland Tropical Storm WatchMOB2 hr
Nov 8, 9:42 PM CSTFlash Flood WatchMOB35 hr
Nov 8, 10:23 PM CSTInland Tropical Storm WarningMOB35 hr
Nov 10, 9:31 AM CSTWind AdvisoryMOB11 hr
Nov 11, 9:02 AM CSTRiver Flood WarningMOB5 days
Nov 11, 9:02 AM CSTRiver Flood WarningMOB24 hr
Nov 11, 10:15 AM CSTRiver Flood WarningMOB9 days
Nov 13, 9:19 AM CSTRiver Flood WarningMOB3 days
Nov 16, 3:55 AM CSTDense Fog AdvisoryMOB4 hr
Nov 18, 2:43 AM CSTFrost AdvisoryMOB28 hr
Nov 25, 3:34 PM CSTFreeze WatchMOB13 hr
Nov 26, 4:55 AM CSTFreeze WarningMOB26 hr
Nov 30, 3:54 PM CSTFlash Flood WatchMOB43 hr
Dec 1, 3:16 PM CSTWind AdvisoryMOB27 hr
Dec 3, 4:17 PM CSTWinter Storm WatchMOB12 hr
Dec 4, 4:00 AM CSTWinter Weather AdvisoryMOB23 hr
Dec 4, 11:18 PM CSTMesoscale DiscussionSPC6 hr
Dec 5, 4:42 AM CSTHard Freeze WarningMOB24 hr
Dec 8, 6:12 PM CSTTornado WatchSPC8 hr
Dec 8, 9:47 PM CSTMesoscale DiscussionSPC88 min
Dec 9, 9:03 AM CSTRiver Flood WarningMOB21 days
Dec 9, 9:03 AM CSTRiver Flood WarningMOB21 days
Dec 12, 5:42 PM CSTFlash Flood WarningMOB108 min
Dec 13, 12:51 PM CSTDense Fog AdvisoryMOB21 hr
Dec 13, 3:50 PM CSTFlash Flood WatchMOB50 hr
Dec 13, 7:03 PM CSTRiver Flood WarningMOB17 days
Dec 14, 10:08 AM CSTMesoscale DiscussionSPC3 hr
Dec 14, 10:14 AM CSTDense Fog AdvisoryMOB106 min
Dec 14, 6:49 PM CSTFlash Flood WarningMOB101 min
Dec 14, 6:59 PM CSTFlash Flood WarningMOB91 min
Dec 14, 7:04 PM CSTFlash Flood WarningMOB86 min
Dec 14, 8:47 PM CSTAreal Flood AdvisoryMOB118 min
Dec 15, 1:18 AM CSTAreal Flood WarningMOB8 hr
Dec 15, 9:22 AM CSTAreal Flood WarningMOB8 hr
Dec 17, 5:10 AM CSTFlash Flood WatchMOB30 hr
Dec 18, 3:44 AM CSTFlash Flood WarningMOB4 hr
Dec 18, 7:32 AM CSTFlash Flood WarningMOB3 hr
Dec 23, 3:29 PM CSTWind AdvisoryMOB30 hr
Dec 24, 10:37 AM CSTTornado WatchSPC7 hr
Dec 24, 3:33 PM CSTMesoscale DiscussionSPC57 min
Dec 24, 4:46 PM CSTMesoscale DiscussionSPC59 min
Dec 24, 5:16 PM CSTSevere Thunderstorm WarningMOB44 min
Dec 24, 5:26 PM CSTSevere Thunderstorm WarningMOB20 min
Dec 24, 5:37 PM CSTTornado WatchSPC9 hr
Dec 30, 5:16 PM CSTAreal Flood AdvisoryMOB119 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.