Alert archive / Florida / Hillsborough County
Weather alerts in Hillsborough County, Florida, 2023
166 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 166
- Warnings
- 35
- Watches
- 10
- Advisories
- 47
- Busiest month
- August40 alerts
- Busiest day
- October 12, 202311 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 3 tornado warnings covering Hillsborough County in 2023 had a tornado report inside them.
Hillsborough County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 15 | 4 | 73% | 3 | 100% | 17 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Tampa Bay, FL: tornado warnings | 41 | 7 | 83% | 9 | 78% | 15 min |
| NWS Tampa Bay, FL: severe thunderstorm warnings | 63 | 14 | 78% | 27 | 59% | 15 min |
| NWS Tampa Bay, FL: flash flood warnings | 2 | 0 | 100% | 0 |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 1:10 AM EST | Dense Fog Advisory | TBW | 9 hr |
| Jan 1, 9:20 PM EST | Dense Fog Advisory | TBW | 12 hr |
| Jan 13, 5:40 AM EST | Special Weather Statement | TBW | 35 min |
| Jan 13, 1:42 PM EST | Wind Chill Advisory | TBW | 19 hr |
| Jan 14, 3:17 AM EST | Rip Current Statement | TBW | 35 hr |
| Jan 14, 2:32 PM EST | Freeze Warning | TBW | 18 hr |
| Jan 15, 1:11 PM EST | Frost Advisory | TBW | 20 hr |
| Jan 25, 4:13 AM EST | Rip Current Statement | TBW | 39 hr |
| Jan 31, 4:59 AM EST | Dense Fog Advisory | TBW | 5 hr |
| Jan 31, 7:32 PM EST | Dense Fog Advisory | TBW | 13 hr |
| Feb 12, 3:21 AM EST | Rip Current Statement | TBW | 40 hr |
| Feb 12, 3:21 AM EST | High Surf Advisory | TBW | 28 hr |
| Feb 17, 7:10 PM EST | Rip Current Statement | TBW | 24 hr |
| Feb 22, 4:27 AM EST | Dense Fog Advisory | TBW | 5 hr |
| Feb 26, 5:14 AM EST | Dense Fog Advisory | TBW | 5 hr |
| Feb 27, 4:17 AM EST | Dense Fog Advisory | TBW | 6 hr |
| Mar 1, 2:50 AM EST | Dense Fog Advisory | TBW | 7 hr |
| Mar 1, 2:56 AM EST | Special Weather Statement | TBW | 3 hr |
| Mar 2, 4:49 AM EST | Dense Fog Advisory | TBW | 4 hr |
| Mar 3, 2:26 AM EST | Rip Current Statement | TBW | 41 hr |
| Mar 3, 2:26 AM EST | High Surf Advisory | TBW | 17 hr |
| Mar 13, 4:13 AM EDT | Rip Current Statement | TBW | 16 hr |
| Mar 13, 11:10 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 18, 11:06 AM EDT | Rip Current Statement | TBW | 33 hr |
| Mar 28, 3:42 AM EDT | Dense Fog Advisory | TBW | 6 hr |
| Apr 16, 10:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Apr 24, 2:34 PM EDT | Special Weather Statement | TBW | 26 min |
| Apr 24, 2:41 PM EDT | Severe Thunderstorm Warning | TBW | 34 min |
| Apr 24, 2:43 PM EDT | Special Weather Statement | TBW | 32 min |
| Apr 24, 2:59 PM EDT | Severe Thunderstorm Warning | TBW | 46 min |
| Apr 24, 3:11 PM EDT | Severe Thunderstorm Warning | TBW | 34 min |
| Apr 24, 3:30 PM EDT | Severe Thunderstorm Warning | TBW | 23 min |
| Apr 24, 3:38 PM EDT | Severe Thunderstorm Warning | TBW | 12 min |
| Apr 27, 9:01 PM EDT | Special Weather Statement | TBW | 44 min |
| Apr 27, 9:10 PM EDT | Severe Thunderstorm Warning | TBW | 35 min |
| Apr 27, 9:25 PM EDT | Severe Thunderstorm Warning | TBW | 35 min |
| Apr 29, 3:58 AM EDT | Rip Current Statement | TBW | 64 hr |
| Apr 29, 3:58 AM EDT | High Surf Advisory | TBW | 40 hr |
| Apr 29, 3:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Apr 29, 3:40 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 29, 5:18 PM EDT | Special Weather Statement | TBW | 57 min |
| Apr 29, 6:19 PM EDT | Special Weather Statement | TBW | 56 min |
| Apr 30, 4:32 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Apr 30, 5:03 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 30, 5:16 AM EDT | Special Weather Statement | TBW | 59 min |
| May 3, 3:59 AM EDT | Red Flag Warning | TBW | 15 hr |
| May 23, 4:31 PM EDT | Special Weather Statement | TBW | 44 min |
| May 24, 1:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 4:27 PM EDT | Special Weather Statement | TBW | 33 min |
| May 25, 3:12 PM EDT | Special Weather Statement | TBW | 33 min |
| Jun 1, 5:15 PM EDT | Special Weather Statement | TBW | 30 min |
| Jun 1, 5:27 PM EDT | Severe Thunderstorm Warning | TBW | 33 min |
| Jun 3, 8:44 PM EDT | Areal Flood Advisory | TBW | 91 min |
| Jun 4, 5:20 PM EDT | Severe Thunderstorm Warning | TBW | 25 min |
| Jun 4, 5:46 PM EDT | Severe Thunderstorm Warning | TBW | 29 min |
| Jun 4, 6:16 PM EDT | Special Weather Statement | TBW | 44 min |
| Jun 4, 6:41 PM EDT | Special Weather Statement | TBW | 34 min |
| Jun 4, 7:04 PM EDT | Severe Thunderstorm Warning | TBW | 41 min |
| Jun 4, 8:37 PM EDT | River Flood Warning | TBW | 26 hr |
| Jun 16, 3:27 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 17, 1:58 PM EDT | Rip Current Statement | TBW | 49 hr |
| Jun 17, 9:15 PM EDT | Special Weather Statement | TBW | 45 min |
| Jun 18, 5:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 7:28 PM EDT | Severe Thunderstorm Warning | TBW | 17 min |
| Jun 20, 8:18 AM EDT | Rip Current Statement | TBW | 36 hr |
| Jun 20, 2:59 PM EDT | Special Weather Statement | TBW | 31 min |
| Jun 21, 5:18 AM EDT | Severe Thunderstorm Warning | TBW | 16 min |
| Jun 21, 1:10 PM EDT | Special Weather Statement | TBW | 80 min |
| Jun 22, 4:50 AM EDT | Rip Current Statement | TBW | 15 hr |
| Jun 22, 12:33 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 4:26 AM EDT | Heat Advisory | TBW | 14 hr |
| Jul 4, 3:26 AM EDT | Heat Advisory | TBW | 16 hr |
| Jul 5, 3:28 AM EDT | Heat Advisory | TBW | 16 hr |
| Jul 6, 3:38 AM EDT | Heat Advisory | TBW | 15 hr |
| Jul 10, 11:15 AM EDT | Heat Advisory | TBW | 7 hr |
| Jul 17, 4:58 PM EDT | Areal Flood Advisory | TBW | 3 hr |
| Jul 19, 5:51 PM EDT | Special Weather Statement | TBW | 24 min |
| Jul 21, 3:26 AM EDT | Heat Advisory | TBW | 16 hr |
| Jul 22, 3:00 AM EDT | Heat Advisory | TBW | 16 hr |
| Jul 24, 11:38 AM EDT | Special Weather Statement | TBW | 37 min |
| Jul 24, 12:14 PM EDT | Severe Thunderstorm Warning | TBW | 31 min |
| Jul 24, 2:11 PM EDT | Special Weather Statement | TBW | 49 min |
| Jul 28, 6:46 PM EDT | Areal Flood Advisory | TBW | 119 min |
| Jul 30, 2:29 AM EDT | Heat Advisory | TBW | 17 hr |
| Jul 31, 1:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 3, 7:33 PM EDT | Areal Flood Advisory | TBW | 57 min |
| Aug 6, 2:47 AM EDT | Heat Advisory | TBW | 16 hr |
| Aug 7, 2:30 AM EDT | Heat Advisory | TBW | 17 hr |
| Aug 7, 2:13 PM EDT | Heat Advisory | TBW | 29 hr |
| Aug 8, 7:32 PM EDT | Heat Advisory | TBW | 23 hr |
| Aug 9, 9:40 AM EDT | Excessive Heat Warning | TBW | 9 hr |
| Aug 9, 7:34 PM EDT | Heat Advisory | TBW | 23 hr |
| Aug 10, 8:33 PM EDT | Heat Advisory | TBW | 22 hr |
| Aug 11, 6:48 PM EDT | Heat Advisory | TBW | 24 hr |
| Aug 12, 3:03 AM EDT | Excessive Heat Warning | TBW | 16 hr |
| Aug 13, 3:03 AM EDT | Excessive Heat Warning | TBW | 16 hr |
| Aug 14, 3:06 AM EDT | Heat Advisory | TBW | 16 hr |
| Aug 14, 7:34 PM EDT | Heat Advisory | TBW | 23 hr |
| Aug 17, 2:04 PM EDT | Special Weather Statement | TBW | 26 min |
| Aug 17, 2:45 PM EDT | Special Weather Statement | TBW | 30 min |
| Aug 17, 2:48 PM EDT | Special Weather Statement | TBW | 27 min |
| Aug 17, 2:57 PM EDT | Areal Flood Advisory | TBW | 3 hr |
| Aug 18, 3:37 PM EDT | Special Weather Statement | TBW | 38 min |
| Aug 20, 4:52 PM EDT | Special Weather Statement | TBW | 38 min |
| Aug 20, 5:19 PM EDT | Severe Thunderstorm Warning | TBW | 26 min |
| Aug 27, 4:44 PM EDT | Special Weather Statement | TBW | 31 min |
| Aug 27, 4:58 PM EDT | Hurricane Watch | TBW | 48 hr |
| Aug 27, 4:58 PM EDT | Storm Surge Watch | TBW | 3 days |
| Aug 27, 5:15 PM EDT | Special Weather Statement | TBW | 45 min |
| Aug 28, 11:04 AM EDT | Hurricane Warning | TBW | 48 hr |
| Aug 28, 11:04 AM EDT | Storm Surge Warning | TBW | 54 hr |
| Aug 28, 11:04 AM EDT | Tropical Storm Warning | TBW | 54 hr |
| Aug 28, 9:22 PM EDT | River Flood Warning | TBW | 50 hr |
| Aug 29, 3:15 AM EDT | Flood Watch | TBW | 38 hr |
| Aug 29, 9:33 AM EDT | River Flood Warning | TBW | 36 hr |
| Aug 29, 7:44 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 29, 8:28 PM EDT | Tornado Watch | SPC | 10 hr |
| Aug 30, 1:10 AM EDT | Mesoscale Discussion | SPC | 65 min |
| Aug 30, 2:52 AM EDT | Areal Flood Advisory | TBW | 3 hr |
| Aug 30, 4:23 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 5:38 AM EDT | Tornado Watch | SPC | 12 hr |
| Aug 30, 2:09 PM EDT | Areal Flood Warning | TBW | 2 hr |
| Aug 30, 5:33 PM EDT | Coastal Flood Statement | TBW | 10 hr |
| Aug 30, 5:33 PM EDT | Rip Current Statement | TBW | 26 hr |
| Aug 30, 5:33 PM EDT | High Surf Advisory | TBW | 10 hr |
| Sep 1, 4:59 AM EDT | River Flood Warning | TBW | 45 hr |
| Sep 1, 9:58 PM EDT | River Flood Warning | TBW | 66 hr |
| Sep 8, 1:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 20, 3:50 PM EDT | Special Weather Statement | TBW | 25 min |
| Sep 20, 4:15 PM EDT | Special Weather Statement | TBW | 30 min |
| Sep 21, 7:35 PM EDT | Special Weather Statement | TBW | 40 min |
| Sep 29, 9:31 PM EDT | Areal Flood Advisory | TBW | 2 hr |
| Oct 1, 2:11 PM EDT | River Flood Warning | TBW | 26 hr |
| Oct 11, 2:37 PM EDT | Coastal Flood Advisory | TBW | 26 hr |
| Oct 11, 2:37 PM EDT | Rip Current Statement | TBW | 53 hr |
| Oct 11, 2:37 PM EDT | High Surf Advisory | TBW | 29 hr |
| Oct 11, 4:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Oct 11, 10:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Oct 12, 12:15 AM EDT | Tornado Warning | TBW | 30 min |
| Oct 12, 12:23 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 12, 12:49 AM EDT | Tornado Watch | SPC | 8 hr |
| Oct 12, 1:41 AM EDT | Tornado Warning | TBW | 34 min |
| Oct 12, 5:07 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Oct 12, 8:09 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Oct 12, 8:48 AM EDT | Tornado Watch | SPC | 6 hr |
| Oct 12, 11:35 AM EDT | Tornado Warning | TBW | 25 min |
| Oct 12, 11:53 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 12, 2:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Oct 15, 5:07 AM EDT | Rip Current Statement | TBW | 39 hr |
| Nov 1, 3:27 AM EDT | Rip Current Statement | TBW | 25 hr |
| Nov 17, 7:36 AM EST | Special Weather Statement | TBW | 54 min |
| Dec 3, 3:15 AM EST | Dense Fog Advisory | TBW | 7 hr |
| Dec 3, 10:59 PM EST | Dense Fog Advisory | TBW | 11 hr |
| Dec 10, 4:15 AM EST | Rip Current Statement | TBW | 45 hr |
| Dec 10, 4:15 PM EST | Special Weather Statement | TBW | 30 min |
| Dec 10, 4:51 PM EST | Mesoscale Discussion | SPC | 84 min |
| Dec 14, 2:40 PM EST | Coastal Flood Watch | TBW | 41 hr |
| Dec 15, 10:58 AM EST | River Flood Warning | TBW | 52 hr |
| Dec 16, 7:40 AM EST | Coastal Flood Advisory | TBW | 23 hr |
| Dec 16, 7:40 AM EST | Rip Current Statement | TBW | 3 days |
| Dec 16, 7:40 AM EST | High Surf Advisory | TBW | 47 hr |
| Dec 16, 11:13 AM EST | Wind Advisory | TBW | 23 hr |
| Dec 16, 8:59 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 17, 12:15 AM EST | Mesoscale Discussion | SPC | 60 min |
| Dec 17, 1:26 AM EST | Coastal Flood Warning | TBW | 6 hr |
| Dec 29, 8:28 AM EST | Rip Current Statement | TBW | 37 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 15 |
| Tornado Warning | 3 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 32 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 7 |
| Flood Watch | 1 |
| Areal Flood Advisory | 7 |
| Heat | |
| Excessive Heat Warning | 3 |
| Heat Advisory | 17 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
| Tropical | |
| Hurricane Warning | 1 |
| Storm Surge Warning | 1 |
| Tropical Storm Warning | 1 |
| Hurricane Watch | 1 |
| Storm Surge Watch | 1 |
| Coast and beach | |
| Coastal Flood Warning | 1 |
| Coastal Flood Watch | 1 |
| Coastal Flood Advisory | 2 |
| High Surf Advisory | 6 |
| Coastal Flood Statement | 1 |
| Rip Current Statement | 18 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.