Alert archive / Florida / Hillsborough County

Weather alerts in Hillsborough County, Florida, 2017

217 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Hillsborough County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
217
Warnings
35
Watches
10
Advisories
59
Busiest month
June36 alerts
Busiest day
January 23, 20178 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 1 tornado warnings covering Hillsborough County in 2017 had a tornado report inside them.

Hillsborough County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings13377%540%19 min
Flash flood warnings00

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Tampa Bay, FL: tornado warnings17194%425%4 min
NWS Tampa Bay, FL: severe thunderstorm warnings431467%4844%17 min
NWS Tampa Bay, FL: flash flood warnings2150%475%36 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 6, 3:00 PM ESTRip Current StatementTBW52 hr
Jan 6, 3:00 PM ESTHigh Surf AdvisoryTBW52 hr
Jan 7, 12:08 AM ESTMesoscale DiscussionSPC2 hr
Jan 7, 12:33 AM ESTTornado WatchSPC4 hr
Jan 7, 3:58 AM ESTMesoscale DiscussionSPC92 min
Jan 7, 8:50 AM ESTWind Chill AdvisoryTBW25 hr
Jan 8, 2:40 PM ESTWind Chill AdvisoryTBW18 hr
Jan 21, 4:34 AM ESTRip Current StatementTBW4 days
Jan 21, 5:24 AM ESTDense Fog AdvisoryTBW4 hr
Jan 21, 2:56 PM ESTLake Wind AdvisoryTBW52 hr
Jan 22, 5:01 AM ESTCoastal Flood StatementTBW19 hr
Jan 22, 5:01 AM ESTHigh Surf AdvisoryTBW56 hr
Jan 22, 4:12 PM ESTMesoscale DiscussionSPC63 min
Jan 22, 4:35 PM ESTTornado Watch PDSSPC5 hr
Jan 22, 6:12 PM ESTSevere Thunderstorm WarningTBW32 min
Jan 22, 7:18 PM ESTSpecial Weather StatementTBW57 min
Jan 22, 7:23 PM ESTSevere Thunderstorm WarningTBW22 min
Jan 22, 7:32 PM ESTMesoscale DiscussionSPC88 min
Jan 22, 7:44 PM ESTSpecial Weather StatementTBW61 min
Jan 22, 7:59 PM ESTSevere Thunderstorm WarningTBW31 min
Jan 22, 8:03 PM ESTSevere Thunderstorm WarningTBW42 min
Jan 22, 8:21 PM ESTMesoscale DiscussionSPC114 min
Jan 23, 5:08 AM ESTSpecial Weather StatementTBW52 min
Jan 25, 5:06 AM ESTDense Fog AdvisoryTBW6 hr
Jan 26, 5:00 AM ESTRip Current StatementTBW14 hr
Jan 27, 9:42 AM ESTRip Current StatementTBW9 hr
Jan 30, 3:06 AM ESTRip Current StatementTBW16 hr
Jan 30, 6:51 AM ESTHigh Surf AdvisoryTBW10 hr
Jan 30, 1:51 PM ESTFrost AdvisoryTBW18 hr
Feb 7, 9:36 PM ESTMesoscale DiscussionSPC114 min
Feb 7, 11:15 PM ESTSpecial Weather StatementTBW45 min
Feb 9, 4:12 AM ESTRip Current StatementTBW39 hr
Feb 15, 3:03 AM ESTRip Current StatementTBW22 hr
Feb 15, 3:10 AM ESTLake Wind AdvisoryTBW16 hr
Feb 15, 1:50 PM ESTMesoscale DiscussionSPC2 hr
Feb 16, 2:20 AM ESTRip Current StatementTBW17 hr
Feb 18, 9:55 AM ESTDense Fog AdvisoryTBW23 hr
Feb 23, 3:32 AM ESTRip Current StatementTBW23 hr
Mar 3, 3:56 AM ESTRed Flag WarningTBW13 hr
Mar 3, 3:56 AM ESTLake Wind AdvisoryTBW15 hr
Mar 5, 2:54 AM ESTLake Wind AdvisoryTBW14 hr
Mar 14, 6:26 AM EDTRip Current StatementTBW41 hr
Mar 19, 2:59 AM EDTRip Current StatementTBW20 hr
Mar 19, 3:51 AM EDTRed Flag WarningTBW15 hr
Mar 23, 1:47 PM EDTMesoscale DiscussionSPC2 hr
Mar 31, 4:32 AM EDTRip Current StatementTBW15 hr
Apr 3, 4:10 AM EDTRip Current StatementTBW18 hr
Apr 4, 3:18 AM EDTRip Current StatementTBW4 days
Apr 6, 3:12 AM EDTMesoscale DiscussionSPC2 hr
Apr 6, 5:13 AM EDTSevere Thunderstorm WarningTBW32 min
Apr 6, 5:51 AM EDTSpecial Weather StatementTBW9 min
Apr 6, 6:10 AM EDTMesoscale DiscussionSPC2 hr
Apr 6, 7:18 AM EDTSpecial Weather StatementTBW42 min
Apr 6, 8:36 PM EDTRed Flag WarningTBW23 hr
Apr 24, 3:30 AM EDTLake Wind AdvisoryTBW16 hr
Apr 24, 3:33 AM EDTRip Current StatementTBW30 hr
Apr 30, 8:37 AM EDTRip Current StatementTBW12 hr
May 3, 6:28 PM EDTSpecial Weather StatementTBW47 min
May 4, 3:15 PM EDTMesoscale DiscussionSPC3 hr
May 4, 4:53 PM EDTSpecial Weather StatementTBW52 min
May 4, 5:51 PM EDTSpecial Weather StatementTBW54 min
May 5, 3:37 AM EDTRip Current StatementTBW42 hr
May 5, 3:37 AM EDTHigh Surf AdvisoryTBW32 hr
May 10, 2:59 AM EDTFire Weather WatchTBW12 hr
May 10, 2:59 AM EDTRed Flag WarningTBW17 hr
May 10, 2:34 PM EDTRed Flag WarningTBW29 hr
May 13, 4:07 AM EDTLake Wind AdvisoryTBW15 hr
May 13, 4:12 AM EDTRip Current StatementTBW16 hr
May 19, 6:21 PM EDTSpecial Weather StatementTBW39 min
May 19, 8:05 PM EDTAreal Flood AdvisoryTBW55 min
May 20, 8:18 PM EDTAreal Flood AdvisoryTBW87 min
May 23, 4:07 AM EDTLake Wind AdvisoryTBW16 hr
May 23, 4:13 AM EDTRip Current StatementTBW52 hr
May 23, 2:32 PM EDTCoastal Flood WatchTBW14 hr
May 24, 4:16 AM EDTCoastal Flood StatementTBW28 hr
May 24, 4:20 AM EDTLake Wind AdvisoryTBW18 hr
May 24, 6:30 AM EDTMesoscale DiscussionSPC2 hr
May 24, 12:54 PM EDTMesoscale DiscussionSPC2 hr
May 24, 2:19 PM EDTSpecial Weather StatementTBW56 min
May 24, 2:42 PM EDTSevere Thunderstorm WarningTBW28 min
May 25, 8:23 AM EDTRip Current StatementTBW6 hr
May 31, 6:09 PM EDTSpecial Weather StatementTBW51 min
Jun 2, 2:11 PM EDTSpecial Weather StatementTBW34 min
Jun 5, 10:57 PM EDTRip Current StatementTBW45 hr
Jun 7, 9:08 AM EDTSpecial Weather StatementTBW37 min
Jun 7, 9:47 AM EDTSpecial Weather StatementTBW58 min
Jun 7, 10:11 AM EDTSevere Thunderstorm WarningTBW34 min
Jun 7, 10:46 AM EDTSpecial Weather StatementTBW59 min
Jun 7, 11:45 AM EDTSpecial Weather StatementTBW60 min
Jun 7, 12:25 PM EDTRiver Flood WarningTBW24 hr
Jun 8, 5:00 AM EDTRip Current StatementTBW15 hr
Jun 11, 2:00 PM EDTSpecial Weather StatementTBW45 min
Jun 12, 6:05 PM EDTSpecial Weather StatementTBW40 min
Jun 12, 6:40 PM EDTSpecial Weather StatementTBW50 min
Jun 14, 3:32 PM EDTSpecial Weather StatementTBW43 min
Jun 14, 3:36 PM EDTSevere Thunderstorm WarningTBW20 min
Jun 14, 4:06 PM EDTAreal Flood AdvisoryTBW84 min
Jun 14, 4:18 PM EDTSpecial Weather StatementTBW42 min
Jun 15, 4:10 PM EDTSpecial Weather StatementTBW50 min
Jun 15, 4:54 PM EDTSpecial Weather StatementTBW36 min
Jun 15, 5:44 PM EDTSpecial Weather StatementTBW46 min
Jun 15, 6:00 PM EDTAreal Flood AdvisoryTBW2 hr
Jun 15, 6:35 PM EDTAreal Flood AdvisoryTBW85 min
Jun 15, 8:05 PM EDTAreal Flood AdvisoryTBW3 hr
Jun 17, 4:37 PM EDTSpecial Weather StatementTBW38 min
Jun 18, 4:19 PM EDTSpecial Weather StatementTBW26 min
Jun 19, 2:34 PM EDTRip Current StatementTBW53 hr
Jun 21, 5:13 PM EDTSpecial Weather StatementTBW32 min
Jun 22, 7:38 PM EDTSpecial Weather StatementTBW37 min
Jun 25, 5:48 PM EDTAreal Flood AdvisoryTBW87 min
Jun 26, 4:02 PM EDTAreal Flood AdvisoryTBW88 min
Jun 27, 12:04 PM EDTMesoscale DiscussionSPC86 min
Jun 28, 8:45 PM EDTSpecial Weather StatementTBW45 min
Jun 29, 5:50 PM EDTSpecial Weather StatementTBW40 min
Jun 30, 6:07 PM EDTSpecial Weather StatementTBW38 min
Jun 30, 6:23 PM EDTSevere Thunderstorm WarningTBW37 min
Jun 30, 6:49 PM EDTSevere Thunderstorm WarningTBW23 min
Jun 30, 7:03 PM EDTSpecial Weather StatementTBW57 min
Jul 1, 1:46 PM EDTAreal Flood AdvisoryTBW89 min
Jul 3, 3:56 PM EDTSpecial Weather StatementTBW49 min
Jul 4, 5:45 PM EDTSpecial Weather StatementTBW60 min
Jul 5, 6:43 PM EDTSpecial Weather StatementTBW47 min
Jul 5, 7:21 PM EDTSevere Thunderstorm WarningTBW39 min
Jul 5, 7:41 PM EDTSpecial Weather StatementTBW49 min
Jul 5, 7:47 PM EDTAreal Flood AdvisoryTBW58 min
Jul 9, 7:00 PM EDTSpecial Weather StatementTBW45 min
Jul 10, 4:44 PM EDTSevere Thunderstorm WarningTBW31 min
Jul 10, 4:46 PM EDTSpecial Weather StatementTBW29 min
Jul 10, 4:54 PM EDTAreal Flood AdvisoryTBW96 min
Jul 10, 5:05 PM EDTSpecial Weather StatementTBW40 min
Jul 10, 5:39 PM EDTAreal Flood AdvisoryTBW96 min
Jul 11, 5:28 PM EDTSpecial Weather StatementTBW47 min
Jul 14, 3:44 PM EDTSpecial Weather StatementTBW46 min
Jul 17, 4:11 PM EDTSpecial Weather StatementTBW34 min
Jul 21, 1:22 PM EDTSpecial Weather StatementTBW23 min
Jul 21, 2:06 PM EDTSpecial Weather StatementTBW24 min
Jul 21, 4:44 PM EDTSpecial Weather StatementTBW31 min
Jul 29, 3:38 PM EDTSpecial Weather StatementTBW52 min
Jul 29, 3:44 PM EDTSpecial Weather StatementTBW46 min
Jul 29, 4:13 PM EDTSpecial Weather StatementTBW32 min
Jul 30, 4:48 AM EDTRip Current StatementTBW15 hr
Jul 30, 8:44 PM EDTRip Current StatementTBW12 hr
Jul 31, 5:37 AM EDTFlood WatchTBW11 hr
Jul 31, 6:32 AM EDTTropical Storm WatchTBW2 hr
Jul 31, 8:38 AM EDTTropical Storm WarningTBW9 hr
Jul 31, 9:47 AM EDTRiver Flood WarningTBW4 days
Jul 31, 10:38 AM EDTAreal Flood AdvisoryTBW112 min
Jul 31, 12:29 PM EDTAreal Flood AdvisoryTBW91 min
Jul 31, 3:19 PM EDTRiver Flood WarningTBW3 days
Aug 2, 2:06 PM EDTSpecial Weather StatementTBW24 min
Aug 2, 2:09 PM EDTRip Current StatementTBW8 hr
Aug 3, 4:55 PM EDTSpecial Weather StatementTBW50 min
Aug 10, 5:09 PM EDTSpecial Weather StatementTBW36 min
Aug 17, 4:56 PM EDTSpecial Weather StatementTBW34 min
Aug 23, 6:20 PM EDTSpecial Weather StatementTBW55 min
Aug 23, 7:17 PM EDTSpecial Weather StatementTBW58 min
Aug 23, 7:21 PM EDTAreal Flood AdvisoryTBW54 min
Aug 25, 7:44 PM EDTSpecial Weather StatementTBW31 min
Aug 26, 3:42 AM EDTRip Current StatementTBW65 hr
Aug 26, 3:12 PM EDTAreal Flood AdvisoryTBW2 hr
Aug 26, 10:27 PM EDTRiver Flood WarningTBW6 days
Aug 26, 10:27 PM EDTRiver Flood WarningTBW4 days
Aug 28, 2:53 PM EDTAreal Flood AdvisoryTBW112 min
Aug 28, 4:33 PM EDTAreal Flood AdvisoryTBW117 min
Aug 28, 6:30 PM EDTAreal Flood AdvisoryTBW2 hr
Aug 28, 6:32 PM EDTAreal Flood WarningTBW118 min
Aug 28, 8:33 PM EDTAreal Flood AdvisoryTBW117 min
Aug 28, 9:25 PM EDTAreal Flood AdvisoryTBW95 min
Aug 29, 1:23 PM EDTAreal Flood AdvisoryTBW82 min
Aug 29, 2:50 PM EDTAreal Flood AdvisoryTBW85 min
Sep 1, 4:16 PM EDTAreal Flood AdvisoryTBW89 min
Sep 1, 5:03 PM EDTSpecial Weather StatementTBW27 min
Sep 3, 8:03 PM EDTSpecial Weather StatementTBW27 min
Sep 7, 11:31 PM EDTHurricane WatchTBW37 hr
Sep 7, 11:31 PM EDTStorm Surge WatchTBW37 hr
Sep 8, 6:35 AM EDTRiver Flood WarningTBW10 days
Sep 8, 11:24 AM EDTStorm Surge WarningTBW3 days
Sep 8, 5:11 PM EDTRiver Flood WarningTBW11 days
Sep 8, 5:11 PM EDTRiver Flood WarningTBW11 days
Sep 8, 5:11 PM EDTRiver Flood WarningTBW7 days
Sep 8, 6:45 PM EDTHurricane WarningTBW62 hr
Sep 9, 12:24 AM EDTFlash Flood WatchTBW53 hr
Sep 9, 10:01 AM EDTRiver Flood WarningTBW4 days
Sep 10, 11:08 AM EDTTornado WarningTBW22 min
Sep 10, 12:02 PM EDTTornado WatchSPC13 hr
Sep 10, 3:01 PM EDTMesoscale DiscussionSPC119 min
Sep 10, 10:33 PM EDTMesoscale DiscussionSPC87 min
Sep 11, 3:13 AM EDTAreal Flood WarningTBW3 hr
Sep 11, 5:29 AM EDTTropical Storm WarningTBW10 hr
Sep 11, 3:08 PM EDTWind AdvisoryTBW3 hr
Sep 11, 3:19 PM EDTRip Current StatementTBW6 hr
Sep 11, 3:19 PM EDTHigh Surf AdvisoryTBW6 hr
Sep 12, 3:42 AM EDTRip Current StatementTBW16 hr
Sep 14, 4:51 PM EDTAreal Flood AdvisoryTBW54 min
Oct 7, 3:54 AM EDTRip Current StatementTBW44 hr
Oct 26, 3:27 AM EDTRip Current StatementTBW17 hr
Oct 28, 3:08 PM EDTLake Wind AdvisoryTBW26 hr
Oct 28, 3:33 PM EDTRip Current StatementTBW48 hr
Oct 28, 3:33 PM EDTHigh Surf AdvisoryTBW31 hr
Nov 5, 7:42 AM ESTDense Fog AdvisoryTBW10 min
Nov 5, 7:52 AM ESTDense Fog AdvisoryTBW2 hr
Nov 6, 3:19 AM ESTDense Fog AdvisoryTBW6 hr
Nov 7, 3:11 AM ESTDense Fog AdvisoryTBW6 hr
Nov 23, 8:40 AM ESTMesoscale DiscussionSPC3 hr
Nov 25, 4:42 AM ESTDense Fog AdvisoryTBW3 hr
Dec 6, 11:31 PM ESTDense Fog AdvisoryTBW10 hr
Dec 8, 8:16 PM ESTMesoscale DiscussionSPC2 hr
Dec 9, 12:35 AM ESTSevere Thunderstorm WarningTBW25 min
Dec 9, 1:02 AM ESTSpecial Weather StatementTBW28 min
Dec 9, 4:29 AM ESTRip Current StatementTBW24 hr
Dec 9, 3:11 PM ESTWind Chill AdvisoryTBW17 hr
Dec 12, 3:32 AM ESTRip Current StatementTBW35 hr
Dec 18, 5:20 AM ESTDense Fog AdvisoryTBW4 hr
Dec 19, 4:41 AM ESTDense Fog AdvisoryTBW4 hr
Dec 19, 11:50 PM ESTDense Fog AdvisoryTBW9 hr
Dec 23, 1:56 AM ESTDense Fog AdvisoryTBW7 hr
Dec 24, 5:06 AM ESTDense Fog AdvisoryTBW5 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 archive20162018

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.