Alert archive / Georgia / Seminole County

Weather alerts in Seminole County, Georgia, 2015

114 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Seminole County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
114
Warnings
30
Watches
18
Advisories
36
Busiest month
July18 alerts
Busiest day
June 30, 20157 alerts

Over time

By month

Warning verification

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

Seminole County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings231917%6100%17 min
Flash flood warnings00

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Tallahassee, FL: tornado warnings48981%2361%7 min
NWS Tallahassee, FL: severe thunderstorm warnings47330835%77490%23 min
NWS Tallahassee, FL: flash flood warnings372241%6195%105 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 4, 8:48 AM ESTMesoscale DiscussionSPC87 min
Jan 4, 9:29 AM ESTSevere Thunderstorm WarningTAE46 min
Jan 6, 3:51 PM ESTHard Freeze WatchTAE11 hr
Jan 7, 2:23 AM ESTWind Chill AdvisoryTAE35 hr
Jan 7, 2:29 AM ESTHard Freeze WarningTAE35 hr
Jan 8, 1:58 PM ESTHard Freeze WarningTAE19 hr
Jan 12, 5:59 PM ESTDense Fog AdvisoryTAE12 hr
Jan 23, 3:42 AM ESTFlash Flood WatchTAE10 hr
Feb 9, 2:50 PM ESTSpecial Weather StatementTAE40 min
Feb 9, 3:01 PM ESTSpecial Weather StatementTAE44 min
Feb 18, 2:45 AM ESTHard Freeze WatchTAE24 hr
Feb 18, 2:45 AM ESTHard Freeze WarningTAE31 hr
Feb 18, 2:05 PM ESTWind Chill AdvisoryTAE20 hr
Feb 19, 3:06 AM ESTHard Freeze WarningTAE30 hr
Feb 23, 1:12 AM ESTDense Fog AdvisoryTAE8 hr
Mar 2, 6:10 AM ESTDense Fog AdvisoryTAE4 hr
Mar 3, 1:32 AM ESTDense Fog AdvisoryTAE8 hr
Mar 4, 3:10 AM ESTDense Fog AdvisoryTAE6 hr
Mar 6, 2:21 PM ESTFrost AdvisoryTAE19 hr
Mar 11, 5:23 AM EDTDense Fog AdvisoryTAE6 hr
Mar 12, 1:16 AM EDTDense Fog AdvisoryTAE9 hr
Mar 30, 2:11 PM EDTMesoscale DiscussionSPC3 hr
Mar 31, 6:23 AM EDTDense Fog AdvisoryTAE4 hr
Apr 3, 4:39 AM EDTDense Fog AdvisoryTAE5 hr
Apr 10, 4:38 PM EDTMesoscale DiscussionSPC97 min
Apr 14, 5:47 PM EDTMesoscale DiscussionSPC88 min
Apr 18, 4:08 PM EDTFlash Flood WatchTAE23 hr
Apr 19, 6:51 AM EDTMesoscale DiscussionSPC114 min
Apr 19, 7:57 AM EDTTornado WatchSPC7 hr
Apr 25, 8:41 AM EDTMesoscale DiscussionSPC94 min
Apr 25, 9:08 AM EDTTornado WatchSPC7 hr
Apr 25, 9:20 AM EDTSevere Thunderstorm WarningTAE55 min
Apr 25, 4:07 PM EDTSevere Thunderstorm WatchSPC7 hr
Apr 25, 6:45 PM EDTSevere Thunderstorm WarningTAE60 min
Apr 25, 7:19 PM EDTMesoscale DiscussionSPC56 min
May 20, 10:25 PM EDTSpecial Weather StatementTAE50 min
May 26, 12:35 PM EDTSevere Thunderstorm WarningTAE40 min
May 26, 6:23 PM EDTSpecial Weather StatementTAE22 min
May 27, 4:54 PM EDTSpecial Weather StatementTAE51 min
May 27, 5:37 PM EDTSevere Thunderstorm WarningTAE23 min
Jun 3, 5:50 PM EDTMesoscale DiscussionSPC115 min
Jun 10, 8:55 PM EDTSevere Thunderstorm WarningTAE50 min
Jun 17, 3:43 AM EDTHeat AdvisoryTAE14 hr
Jun 22, 3:56 PM EDTHeat AdvisoryTAE26 hr
Jun 23, 3:24 PM EDTMesoscale DiscussionSPC96 min
Jun 24, 8:01 PM EDTSevere Thunderstorm WarningTAE34 min
Jun 27, 2:17 PM EDTSevere Thunderstorm WarningTAE58 min
Jun 30, 12:17 PM EDTMesoscale DiscussionSPC88 min
Jun 30, 12:25 PM EDTSevere Thunderstorm WarningTAE65 min
Jun 30, 1:08 PM EDTSevere Thunderstorm WarningTAE67 min
Jun 30, 2:06 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 30, 4:32 PM EDTSevere Thunderstorm WarningTAE43 min
Jun 30, 4:51 PM EDTMesoscale DiscussionSPC114 min
Jun 30, 5:11 PM EDTSevere Thunderstorm WarningTAE49 min
Jul 2, 1:48 PM EDTSevere Thunderstorm WarningTAE42 min
Jul 2, 2:23 PM EDTSevere Thunderstorm WarningTAE67 min
Jul 4, 7:10 PM EDTMesoscale DiscussionSPC2 hr
Jul 5, 9:55 AM EDTSevere Thunderstorm WarningTAE65 min
Jul 11, 2:24 AM EDTHeat AdvisoryTAE18 hr
Jul 11, 3:34 PM EDTHeat AdvisoryTAE27 hr
Jul 14, 3:40 AM EDTHeat AdvisoryTAE15 hr
Jul 14, 5:09 PM EDTSevere Thunderstorm WarningTAE51 min
Jul 17, 3:31 AM EDTHeat AdvisoryTAE16 hr
Jul 18, 2:21 AM EDTHeat AdvisoryTAE18 hr
Jul 19, 2:48 AM EDTHeat AdvisoryTAE17 hr
Jul 21, 3:14 AM EDTHeat AdvisoryTAE16 hr
Jul 22, 3:15 AM EDTHeat AdvisoryTAE16 hr
Jul 22, 5:42 PM EDTSevere Thunderstorm WarningTAE48 min
Jul 23, 3:03 AM EDTHeat AdvisoryTAE16 hr
Jul 24, 5:33 PM EDTSevere Thunderstorm WarningTAE42 min
Jul 28, 9:57 AM EDTHeat AdvisoryTAE9 hr
Jul 29, 2:52 AM EDTHeat AdvisoryTAE15 hr
Aug 4, 3:27 PM EDTSevere Thunderstorm WarningTAE33 min
Aug 7, 4:51 PM EDTSevere Thunderstorm WarningTAE39 min
Aug 7, 5:21 PM EDTSevere Thunderstorm WarningTAE21 min
Aug 8, 3:47 AM EDTHeat AdvisoryTAE15 hr
Aug 8, 2:31 PM EDTMesoscale DiscussionSPC59 min
Aug 20, 5:55 PM EDTSpecial Weather StatementTAE35 min
Aug 23, 1:33 PM EDTMesoscale DiscussionSPC2 hr
Sep 10, 1:44 PM EDTSpecial Weather StatementTAE46 min
Sep 10, 6:43 PM EDTSevere Thunderstorm WarningTAE47 min
Sep 10, 7:28 PM EDTSevere Thunderstorm WarningTAE25 min
Sep 22, 7:41 PM EDTSpecial Weather StatementTAE34 min
Sep 28, 4:25 AM EDTFlash Flood WatchTAE23 hr
Sep 30, 7:30 AM EDTDense Fog AdvisoryTAE3 hr
Oct 12, 6:54 AM EDTDense Fog AdvisoryTAE3 hr
Oct 29, 4:43 AM EDTDense Fog AdvisoryTAE5 hr
Nov 1, 2:28 PM ESTFlash Flood WatchTAE27 hr
Nov 1, 4:51 PM ESTMesoscale DiscussionSPC54 min
Nov 2, 11:21 AM ESTMesoscale DiscussionSPC54 min
Nov 2, 1:15 PM ESTTornado WatchSPC6 hr
Nov 4, 11:40 PM ESTAreal Flood AdvisoryTAE2 hr
Nov 8, 12:13 PM ESTFlood WatchTAE22 hr
Nov 12, 6:08 AM ESTDense Fog AdvisoryTAE4 hr
Nov 18, 11:51 AM ESTMesoscale DiscussionSPC114 min
Nov 18, 2:39 PM ESTMesoscale DiscussionSPC2 hr
Nov 18, 3:16 PM ESTTornado WatchSPC6 hr
Nov 18, 6:35 PM ESTMesoscale DiscussionSPC115 min
Nov 23, 2:51 AM ESTFrost AdvisoryTAE30 hr
Dec 2, 3:02 AM ESTDense Fog AdvisoryTAE4 hr
Dec 12, 4:11 AM ESTDense Fog AdvisoryTAE5 hr
Dec 15, 12:29 AM ESTDense Fog AdvisoryTAE9 hr
Dec 17, 4:21 AM ESTMesoscale DiscussionSPC114 min
Dec 18, 3:28 AM ESTFreeze WatchTAE11 hr
Dec 18, 2:18 PM ESTFreeze WarningTAE19 hr
Dec 19, 3:14 AM ESTFreeze WatchTAE11 hr
Dec 19, 2:01 PM ESTFreeze WarningTAE19 hr
Dec 21, 3:19 AM ESTFlash Flood WatchTAE61 hr
Dec 23, 12:42 PM ESTMesoscale DiscussionSPC93 min
Dec 26, 2:04 AM ESTDense Fog AdvisoryTAE8 hr
Dec 26, 6:26 AM ESTRiver Flood WarningTAE36 hr
Dec 28, 12:04 PM ESTTornado WatchSPC7 hr
Dec 28, 6:07 PM ESTMesoscale DiscussionSPC53 min
Dec 30, 9:41 AM ESTFlash Flood WatchTAE27 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 archive20142016

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.