Alert archive / Florida / Seminole County

Weather alerts in Seminole County, Florida, 2024

183 weather alerts in 2024, 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 2024. Tap one for its archive.

Alerts
183
Warnings
33
Watches
15
Advisories
48
Busiest month
August35 alerts
Busiest day
August 4, 202413 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 3 tornado warnings covering Seminole County in 2024 had a tornado report inside them.

Seminole County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings30100%0
Severe thunderstorm warnings14843%650%14 min
Flash flood warnings6350%0

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Melbourne, FL: tornado warnings652365%3786%20 min
NWS Melbourne, FL: severe thunderstorm warnings861780%8933%12 min
NWS Melbourne, FL: flash flood warnings9456%5100%170 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 1, 5:34 AM ESTDense Fog AdvisoryMLB3 hr
Jan 8, 1:17 PM ESTWind AdvisoryMLB30 hr
Jan 9, 12:42 PM ESTMesoscale DiscussionSPC2 hr
Jan 9, 1:15 PM ESTTornado WatchSPC7 hr
Jan 9, 5:21 PM ESTSevere Thunderstorm WarningMLB39 min
Jan 9, 5:55 PM ESTSevere Thunderstorm WarningMLB50 min
Jan 9, 6:08 PM ESTTornado WarningMLB37 min
Jan 9, 6:24 PM ESTSevere Thunderstorm WarningMLB51 min
Jan 16, 12:35 AM ESTDense Fog AdvisoryMLB9 hr
Jan 16, 11:17 AM ESTMesoscale DiscussionSPC118 min
Jan 16, 3:07 PM ESTWind Chill AdvisoryMLB18 hr
Jan 20, 1:56 AM ESTWind Chill AdvisoryMLB30 hr
Feb 4, 6:57 PM ESTSevere Thunderstorm WarningMLB33 min
Feb 4, 7:24 PM ESTSevere Thunderstorm WarningMLB36 min
Feb 4, 7:56 PM ESTSpecial Weather StatementMLB34 min
Feb 4, 8:04 PM ESTSevere Thunderstorm WarningMLB41 min
Mar 3, 6:31 PM ESTSpecial Weather StatementMLB29 min
Mar 3, 11:45 PM ESTDense Fog AdvisoryMLB9 hr
Mar 18, 1:55 PM EDTMesoscale DiscussionSPC3 hr
Apr 2, 2:25 PM EDTWind AdvisoryMLB30 hr
Apr 3, 10:43 AM EDTTornado WatchSPC6 hr
Apr 3, 1:02 PM EDTMesoscale DiscussionSPC88 min
Apr 3, 2:43 PM EDTSpecial Weather StatementMLB47 min
Apr 3, 3:22 PM EDTMesoscale DiscussionSPC83 min
Apr 3, 3:29 PM EDTSpecial Weather StatementMLB46 min
Apr 3, 4:01 PM EDTSpecial Weather StatementMLB44 min
Apr 3, 9:10 PM EDTSpecial Weather StatementMLB35 min
Apr 10, 1:03 PM EDTWind AdvisoryMLB31 hr
Apr 11, 7:32 AM EDTTornado WatchSPC7 hr
Apr 11, 12:45 PM EDTMesoscale DiscussionSPC2 hr
Apr 11, 1:40 PM EDTSpecial Weather StatementMLB35 min
Apr 11, 1:54 PM EDTMesoscale DiscussionSPC96 min
Apr 11, 2:21 PM EDTSpecial Weather StatementMLB39 min
Apr 11, 2:58 PM EDTSpecial Weather StatementMLB47 min
May 10, 8:17 AM EDTMesoscale DiscussionSPC2 hr
May 11, 2:08 AM EDTSevere Thunderstorm WarningMLB37 min
May 13, 4:04 PM EDTMesoscale DiscussionSPC86 min
May 14, 8:43 AM EDTMesoscale DiscussionSPC92 min
May 14, 10:30 AM EDTMesoscale DiscussionSPC2 hr
May 14, 12:12 PM EDTSevere Thunderstorm WarningMLB33 min
May 14, 12:42 PM EDTSpecial Weather StatementMLB33 min
May 15, 1:45 AM EDTMesoscale DiscussionSPC2 hr
May 15, 2:47 AM EDTTornado WatchSPC8 hr
May 15, 4:58 AM EDTMesoscale DiscussionSPC92 min
May 15, 7:01 AM EDTSpecial Weather StatementMLB44 min
May 15, 8:29 AM EDTSpecial Weather StatementMLB31 min
May 15, 8:36 AM EDTMesoscale DiscussionSPC84 min
May 15, 10:52 AM EDTSevere Thunderstorm WatchSPC5 hr
May 15, 1:15 PM EDTMesoscale DiscussionSPC90 min
May 15, 2:37 PM EDTSpecial Weather StatementMLB23 min
May 15, 2:41 PM EDTSpecial Weather StatementMLB34 min
May 17, 10:23 AM EDTSpecial Weather StatementMLB37 min
May 18, 2:16 PM EDTMesoscale DiscussionSPC119 min
May 18, 3:29 PM EDTSevere Thunderstorm WarningMLB31 min
May 18, 4:41 PM EDTSpecial Weather StatementMLB64 min
May 28, 1:43 PM EDTSpecial Weather StatementMLB32 min
May 28, 4:23 PM EDTSpecial Weather StatementMLB37 min
Jun 6, 3:52 PM EDTMesoscale DiscussionSPC53 min
Jun 6, 6:13 PM EDTSpecial Weather StatementMLB32 min
Jun 6, 6:48 PM EDTSpecial Weather StatementMLB27 min
Jun 6, 6:59 PM EDTSevere Thunderstorm WarningMLB31 min
Jun 6, 7:13 PM EDTTornado WarningMLB17 min
Jun 6, 7:26 PM EDTSevere Thunderstorm WarningMLB34 min
Jun 6, 7:43 PM EDTSpecial Weather StatementMLB47 min
Jun 6, 7:48 PM EDTAreal Flood AdvisoryMLB2 hr
Jun 6, 7:54 PM EDTSpecial Weather StatementMLB36 min
Jun 10, 7:09 PM EDTSpecial Weather StatementMLB51 min
Jun 10, 8:13 PM EDTSpecial Weather StatementMLB47 min
Jun 10, 8:53 PM EDTAreal Flood AdvisoryMLB112 min
Jun 10, 8:57 PM EDTSpecial Weather StatementMLB48 min
Jun 13, 2:40 PM EDTSpecial Weather StatementMLB20 min
Jun 13, 2:42 PM EDTSpecial Weather StatementMLB33 min
Jun 13, 3:06 PM EDTSpecial Weather StatementMLB24 min
Jun 26, 6:27 PM EDTSpecial Weather StatementMLB48 min
Jun 26, 7:21 PM EDTAreal Flood AdvisoryMLB79 min
Jun 26, 7:48 PM EDTAreal Flood AdvisoryMLB87 min
Jul 4, 1:51 AM EDTHeat AdvisoryMLB16 hr
Jul 5, 2:13 AM EDTHeat AdvisoryMLB16 hr
Jul 8, 3:59 AM EDTHeat AdvisoryMLB14 hr
Jul 9, 2:42 PM EDTSpecial Weather StatementMLB33 min
Jul 10, 3:14 AM EDTHeat AdvisoryMLB15 hr
Jul 13, 5:45 PM EDTSpecial Weather StatementMLB45 min
Jul 14, 4:32 PM EDTSpecial Weather StatementMLB28 min
Jul 16, 3:58 PM EDTSpecial Weather StatementMLB32 min
Jul 16, 4:27 PM EDTSevere Thunderstorm WarningMLB33 min
Jul 16, 4:36 PM EDTSpecial Weather StatementMLB24 min
Jul 16, 4:55 PM EDTSpecial Weather StatementMLB35 min
Jul 21, 6:08 PM EDTAreal Flood AdvisoryMLB82 min
Jul 23, 5:21 PM EDTAreal Flood AdvisoryMLB84 min
Jul 27, 4:59 PM EDTAreal Flood AdvisoryMLB2 hr
Jul 27, 5:01 PM EDTAreal Flood AdvisoryMLB119 min
Aug 1, 3:25 AM EDTHeat AdvisoryMLB15 hr
Aug 2, 1:32 AM EDTHeat AdvisoryMLB16 hr
Aug 2, 6:14 PM EDTSpecial Weather StatementMLB31 min
Aug 4, 10:57 AM EDTTornado WatchSPC9 hr
Aug 4, 12:02 PM EDTSpecial Weather StatementMLB28 min
Aug 4, 12:28 PM EDTSpecial Weather StatementMLB32 min
Aug 4, 12:45 PM EDTSevere Thunderstorm WarningMLB30 min
Aug 4, 1:32 PM EDTSpecial Weather StatementMLB28 min
Aug 4, 1:47 PM EDTMesoscale DiscussionSPC118 min
Aug 4, 1:57 PM EDTSpecial Weather StatementMLB33 min
Aug 4, 2:19 PM EDTSevere Thunderstorm WarningMLB11 min
Aug 4, 4:51 PM EDTSpecial Weather StatementMLB24 min
Aug 4, 4:53 PM EDTMesoscale DiscussionSPC2 hr
Aug 4, 6:45 PM EDTSpecial Weather StatementMLB45 min
Aug 4, 7:05 PM EDTMesoscale DiscussionSPC55 min
Aug 4, 7:57 PM EDTTornado WatchSPC10 hr
Aug 5, 1:32 AM EDTWind AdvisoryMLB17 hr
Aug 5, 5:57 AM EDTTornado WatchSPC12 hr
Aug 5, 12:08 PM EDTMesoscale DiscussionSPC52 min
Aug 6, 6:37 AM EDTSpecial Weather StatementMLB23 min
Aug 6, 6:44 AM EDTTornado WarningMLB16 min
Aug 6, 7:02 AM EDTSpecial Weather StatementMLB28 min
Aug 6, 7:24 AM EDTSpecial Weather StatementMLB36 min
Aug 8, 2:14 AM EDTHeat AdvisoryMLB16 hr
Aug 9, 2:33 AM EDTHeat AdvisoryMLB15 hr
Aug 10, 3:19 AM EDTHeat AdvisoryMLB16 hr
Aug 11, 3:22 PM EDTSpecial Weather StatementMLB23 min
Aug 11, 4:04 PM EDTSpecial Weather StatementMLB26 min
Aug 12, 4:24 PM EDTSpecial Weather StatementMLB36 min
Aug 14, 2:14 AM EDTHeat AdvisoryMLB16 hr
Aug 20, 1:18 PM EDTSpecial Weather StatementMLB57 min
Aug 21, 11:35 AM EDTSpecial Weather StatementMLB25 min
Aug 22, 3:21 PM EDTSpecial Weather StatementMLB24 min
Aug 22, 4:19 PM EDTAreal Flood AdvisoryMLB116 min
Aug 28, 4:10 PM EDTAreal Flood AdvisoryMLB95 min
Sep 1, 3:31 PM EDTSpecial Weather StatementMLB29 min
Sep 1, 4:18 PM EDTAreal Flood AdvisoryMLB117 min
Sep 1, 5:35 PM EDTAreal Flood AdvisoryMLB85 min
Sep 3, 4:46 PM EDTAreal Flood AdvisoryMLB2 hr
Sep 4, 2:52 PM EDTSpecial Weather StatementMLB23 min
Sep 4, 3:23 PM EDTAreal Flood AdvisoryMLB112 min
Sep 4, 3:46 PM EDTRiver Flood WarningMLB3 hr
Sep 4, 4:08 PM EDTAreal Flood WarningMLB2 hr
Sep 4, 11:25 PM EDTAreal Flood AdvisoryMLB95 min
Sep 5, 1:36 AM EDTAreal Flood AdvisoryMLB84 min
Sep 5, 6:50 PM EDTAreal Flood WarningMLB115 min
Sep 7, 4:49 PM EDTAreal Flood AdvisoryMLB86 min
Sep 8, 5:18 PM EDTSpecial Weather StatementMLB42 min
Sep 8, 7:07 PM EDTAreal Flood AdvisoryMLB113 min
Sep 8, 7:51 PM EDTAreal Flood AdvisoryMLB114 min
Sep 9, 2:33 PM EDTAreal Flood AdvisoryMLB117 min
Sep 11, 2:20 PM EDTAreal Flood AdvisoryMLB3 hr
Sep 14, 7:42 AM EDTDense Fog AdvisoryMLB80 min
Sep 14, 4:14 PM EDTAreal Flood AdvisoryMLB2 hr
Sep 17, 6:22 PM EDTSpecial Weather StatementMLB38 min
Sep 24, 5:08 AM EDTTropical Storm WatchMLB18 hr
Sep 24, 5:06 PM EDTTropical Storm WarningMLB60 hr
Sep 25, 1:40 PM EDTFlood WatchMLB37 hr
Sep 26, 6:42 AM EDTTornado WatchSPC13 hr
Sep 26, 9:07 AM EDTMesoscale DiscussionSPC113 min
Sep 26, 12:32 PM EDTMesoscale DiscussionSPC118 min
Sep 26, 7:02 PM EDTMesoscale DiscussionSPC88 min
Sep 26, 7:50 PM EDTTornado WatchSPC9 hr
Sep 27, 4:59 AM EDTWind AdvisoryMLB6 hr
Oct 1, 7:07 PM EDTSpecial Weather StatementMLB38 min
Oct 5, 12:44 PM EDTFlood WatchMLB5 days
Oct 7, 10:58 AM EDTHurricane WatchMLB66 hr
Oct 7, 5:07 PM EDTHurricane WarningMLB69 hr
Oct 7, 5:07 PM EDTTropical Storm WarningMLB72 hr
Oct 9, 8:20 AM EDTTornado WatchSPC13 hr
Oct 9, 1:51 PM EDTMesoscale DiscussionSPC84 min
Oct 9, 2:49 PM EDTMesoscale DiscussionSPC86 min
Oct 9, 3:57 PM EDTFlash Flood WarningMLB3 hr
Oct 9, 6:43 PM EDTFlash Flood WarningMLB5 hr
Oct 9, 11:01 PM EDTFlash Flood Warning Considerable damage threatMLB3 hr
Oct 9, 11:14 PM EDTRiver Flood WarningMLB5 days
Oct 9, 11:41 PM EDTFlash Flood WarningMLB6 hr
Oct 10, 1:34 AM EDTFlash Flood Warning Considerable damage threatMLB3 hr
Oct 10, 1:52 AM EDTRiver Flood WarningMLB33 days
Oct 10, 5:53 AM EDTFlash Flood WarningMLB3 hr
Oct 10, 9:01 AM EDTAreal Flood WarningMLB3 hr
Oct 10, 10:03 AM EDTRiver Flood WarningMLB30 days
Oct 10, 10:53 AM EDTWind AdvisoryMLB9 hr
Dec 11, 11:43 AM ESTMesoscale DiscussionSPC92 min
Dec 11, 1:28 PM ESTSpecial Weather StatementMLB32 min
Dec 11, 1:54 PM ESTSpecial Weather StatementMLB36 min
Dec 18, 10:59 PM ESTDense Fog AdvisoryMLB11 hr
Dec 20, 1:53 AM ESTDense Fog AdvisoryMLB7 hr
Dec 26, 3:22 AM ESTDense Fog AdvisoryMLB4 hr
Dec 29, 2:12 PM ESTSpecial Weather StatementMLB48 min
Dec 29, 2:53 PM ESTSpecial Weather StatementMLB37 min
Dec 30, 3:32 PM ESTDense Fog AdvisoryMLB17 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 archive20232025

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.