Alert archive / Florida / Hillsborough County

Weather alerts in Hillsborough County, Florida, 2020

202 weather alerts in 2020, 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 2020. Tap one for its archive.

Alerts: 202
Warnings: 51
Watches: 11
Advisories: 51
Busiest month: April31 alerts
Busiest day: November 11, 202015 alerts

Over time

By month

Warning verification

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

4 of 14 tornado warnings covering Hillsborough County in 2020 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 11 minutes after it went out.

Hillsborough County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	14	4	71%	3	100%	11 min
Severe thunderstorm warnings	21	7	67%	5	60%	31 min
Flash flood warnings	1	0	100%	0

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Tampa Bay, FL: tornado warnings	33	7	79%	23	65%	9 min
NWS Tampa Bay, FL: severe thunderstorm warnings	49	16	67%	49	51%	21 min
NWS Tampa Bay, FL: flash flood warnings	3	1	67%	8	50%	69 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.

Issued	Product	Office	Lasted
Jan 3, 2:43 AM EST	Rip Current Statement	TBW	64 hr
Jan 4, 3:20 AM EST	High Surf Advisory	TBW	34 hr
Jan 4, 10:35 AM EST	Special Weather Statement	TBW	40 min
Jan 20, 3:07 AM EST	Rip Current Statement	TBW	18 hr
Jan 21, 3:14 AM EST	Freeze Watch	TBW	13 hr
Jan 21, 3:22 AM EST	Wind Chill Advisory	TBW	30 hr
Jan 21, 3:25 AM EST	Rip Current Statement	TBW	17 hr
Jan 21, 1:40 PM EST	Red Flag Warning	TBW	5 hr
Jan 22, 4:05 AM EST	Rip Current Statement	TBW	9 hr
Jan 30, 4:22 AM EST	Rip Current Statement	TBW	15 hr
Feb 1, 2:58 AM EST	Rip Current Statement	TBW	54 hr
Feb 5, 9:38 AM EST	River Flood Warning	TBW	44 hr
Feb 6, 3:40 AM EST	Coastal Flood Advisory	TBW	21 hr
Feb 6, 3:40 AM EST	Rip Current Statement	TBW	39 hr
Feb 6, 3:40 AM EST	High Surf Advisory	TBW	39 hr
Feb 6, 3:59 AM EST	Wind Advisory	TBW	27 hr
Feb 6, 8:47 PM EST	Mesoscale Discussion	SPC	88 min
Feb 6, 9:25 PM EST	Tornado Watch	SPC	6 hr
Feb 6, 10:02 PM EST	Severe Thunderstorm Warning	TBW	58 min
Feb 6, 10:50 PM EST	Severe Thunderstorm Warning	TBW	55 min
Feb 6, 10:51 PM EST	Tornado Warning	TBW	24 min
Feb 6, 11:13 PM EST	Tornado Warning	TBW	21 min
Feb 6, 11:44 PM EST	Severe Thunderstorm Warning	TBW	61 min
Feb 20, 8:55 PM EST	Rip Current Statement	TBW	24 hr
Feb 22, 3:10 AM EST	Rip Current Statement	TBW	9 hr
Feb 25, 3:30 AM EST	Rip Current Statement	TBW	16 hr
Feb 26, 12:29 PM EST	Mesoscale Discussion	SPC	91 min
Feb 26, 2:46 PM EST	Rip Current Statement	TBW	3 days
Feb 26, 3:16 PM EST	Special Weather Statement	TBW	44 min
Mar 4, 3:43 AM EST	Dense Fog Advisory	TBW	6 hr
Mar 4, 6:42 PM EST	Rip Current Statement	TBW	3 days
Mar 7, 4:24 AM EST	Red Flag Warning	TBW	14 hr
Mar 31, 2:40 PM EDT	Rip Current Statement	TBW	29 hr
Apr 13, 3:27 AM EDT	Rip Current Statement	TBW	19 hr
Apr 14, 6:20 AM EDT	Rip Current Statement	TBW	21 hr
Apr 15, 6:27 AM EDT	Rip Current Statement	TBW	38 hr
Apr 18, 10:27 AM EDT	Special Weather Statement	TBW	48 min
Apr 18, 11:15 AM EDT	Special Weather Statement	TBW	45 min
Apr 19, 5:46 PM EDT	Lake Wind Advisory	TBW	25 hr
Apr 19, 6:01 PM EDT	Rip Current Statement	TBW	44 hr
Apr 20, 7:02 AM EDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 20, 11:06 AM EDT	Mesoscale Discussion	SPC	114 min
Apr 20, 11:15 AM EDT	Severe Thunderstorm Warning	TBW	30 min
Apr 20, 11:40 AM EDT	Special Weather Statement	TBW	50 min
Apr 20, 11:48 AM EDT	Severe Thunderstorm Warning	TBW	27 min
Apr 20, 12:09 PM EDT	Severe Thunderstorm Warning	TBW	36 min
Apr 20, 12:29 PM EDT	Severe Thunderstorm Warning	TBW	31 min
Apr 20, 12:33 PM EDT	Special Weather Statement	TBW	42 min
Apr 20, 12:41 PM EDT	Severe Thunderstorm Warning	TBW	34 min
Apr 20, 12:56 PM EDT	Severe Thunderstorm Warning	TBW	34 min
Apr 20, 1:05 PM EDT	Severe Thunderstorm Warning	TBW	25 min
Apr 20, 1:25 PM EDT	Severe Thunderstorm Warning	TBW	35 min
Apr 23, 5:24 AM EDT	Rip Current Statement	TBW	63 hr
Apr 24, 1:57 AM EDT	Tornado Watch	SPC	9 hr
Apr 24, 3:59 AM EDT	Mesoscale Discussion	SPC	2 hr
Apr 24, 4:59 AM EDT	Severe Thunderstorm Warning	TBW	46 min
Apr 24, 5:05 AM EDT	Tornado Warning	TBW	25 min
Apr 24, 5:41 AM EDT	Severe Thunderstorm Warning	TBW	49 min
Apr 24, 5:47 AM EDT	Tornado Warning	TBW	18 min
Apr 24, 6:10 AM EDT	Special Weather Statement	TBW	65 min
Apr 24, 9:00 AM EDT	Special Weather Statement	TBW	60 min
Apr 30, 12:01 AM EDT	Mesoscale Discussion	SPC	89 min
Apr 30, 12:45 AM EDT	Special Weather Statement	TBW	60 min
Apr 30, 3:45 AM EDT	Rip Current Statement	TBW	28 hr
May 7, 4:01 AM EDT	Rip Current Statement	TBW	18 hr
May 7, 4:45 AM EDT	Red Flag Warning	TBW	15 hr
May 18, 8:34 AM EDT	Severe Thunderstorm Warning	TBW	26 min
May 18, 8:53 AM EDT	Severe Thunderstorm Warning	TBW	37 min
May 18, 9:23 AM EDT	Severe Thunderstorm Warning	TBW	37 min
May 22, 7:14 PM EDT	Special Weather Statement	TBW	46 min
May 22, 7:28 PM EDT	Severe Thunderstorm Warning	TBW	32 min
May 28, 2:03 PM EDT	Mesoscale Discussion	SPC	117 min
May 28, 4:25 PM EDT	Special Weather Statement	TBW	50 min
May 28, 5:39 PM EDT	Areal Flood Advisory	TBW	2 hr
Jun 3, 1:22 PM EDT	Flood Watch	TBW	4 days
Jun 5, 11:43 AM EDT	Coastal Flood Statement	TBW	63 hr
Jun 5, 11:43 AM EDT	Rip Current Statement	TBW	3 days
Jun 5, 11:43 AM EDT	High Surf Advisory	TBW	3 days
Jun 6, 10:35 AM EDT	River Flood Warning	TBW	71 hr
Jun 6, 11:11 AM EDT	Special Weather Statement	TBW	34 min
Jun 6, 11:30 AM EDT	Tornado Warning	TBW	30 min
Jun 6, 12:00 PM EDT	Tornado Warning	TBW	13 min
Jun 6, 12:04 PM EDT	Mesoscale Discussion	SPC	56 min
Jun 6, 12:31 PM EDT	Special Weather Statement	TBW	44 min
Jun 6, 12:56 PM EDT	Areal Flood Advisory	TBW	94 min
Jun 6, 3:24 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 6, 6:49 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 7, 12:40 AM EDT	Mesoscale Discussion	SPC	2 hr
Jun 10, 3:47 PM EDT	Severe Thunderstorm Warning	TBW	28 min
Jun 14, 8:23 PM EDT	Special Weather Statement	TBW	37 min
Jun 14, 9:23 PM EDT	Areal Flood Advisory	TBW	97 min
Jun 22, 2:14 PM EDT	Mesoscale Discussion	SPC	3 hr
Jun 24, 2:37 AM EDT	Heat Advisory	TBW	15 hr
Jun 25, 3:40 AM EDT	Heat Advisory	TBW	14 hr
Jun 25, 3:13 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 6:20 PM EDT	Special Weather Statement	TBW	40 min
Jun 25, 7:02 PM EDT	Special Weather Statement	TBW	43 min
Jun 26, 3:38 AM EDT	Heat Advisory	TBW	14 hr
Jun 27, 2:04 AM EDT	Heat Advisory	TBW	16 hr
Jul 6, 7:35 PM EDT	Areal Flood Advisory	TBW	58 min
Jul 9, 3:49 AM EDT	Heat Advisory	TBW	14 hr
Jul 11, 3:16 AM EDT	Heat Advisory	TBW	15 hr
Jul 11, 3:20 AM EDT	Rip Current Statement	TBW	17 hr
Jul 15, 1:55 PM EDT	Mesoscale Discussion	SPC	95 min
Jul 15, 5:16 PM EDT	Special Weather Statement	TBW	59 min
Jul 15, 7:05 PM EDT	Areal Flood Advisory	TBW	85 min
Jul 27, 8:40 PM EDT	Areal Flood Advisory	TBW	65 min
Jul 28, 4:16 PM EDT	Special Weather Statement	TBW	44 min
Jul 29, 6:14 PM EDT	Special Weather Statement	TBW	46 min
Jul 31, 3:14 AM EDT	Heat Advisory	TBW	15 hr
Aug 3, 10:51 AM EDT	Heat Advisory	TBW	7 hr
Aug 8, 5:22 PM EDT	Areal Flood Advisory	TBW	83 min
Aug 9, 4:12 PM EDT	Special Weather Statement	TBW	63 min
Aug 9, 4:36 PM EDT	Areal Flood Advisory	TBW	84 min
Aug 12, 6:02 PM EDT	Special Weather Statement	TBW	43 min
Aug 14, 2:41 PM EDT	Special Weather Statement	TBW	34 min
Aug 14, 3:26 PM EDT	Special Weather Statement	TBW	34 min
Aug 15, 2:42 PM EDT	Special Weather Statement	TBW	48 min
Aug 18, 12:55 PM EDT	Special Weather Statement	TBW	50 min
Aug 18, 2:37 PM EDT	Areal Flood Advisory	TBW	68 min
Aug 20, 1:46 PM EDT	Areal Flood Advisory	TBW	59 min
Aug 20, 1:59 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 20, 9:46 PM EDT	Areal Flood Advisory	TBW	59 min
Aug 21, 3:23 PM EDT	Areal Flood Advisory	TBW	83 min
Aug 23, 6:11 PM EDT	Rip Current Statement	TBW	4 days
Aug 23, 7:16 PM EDT	Heat Advisory	TBW	23 hr
Aug 24, 7:33 PM EDT	Heat Advisory	TBW	22 hr
Aug 25, 8:06 PM EDT	High Surf Advisory	TBW	24 hr
Aug 26, 4:31 AM EDT	Heat Advisory	TBW	13 hr
Aug 30, 2:54 PM EDT	Areal Flood Advisory	TBW	66 min
Sep 1, 10:39 AM EDT	River Flood Warning	TBW	4 days
Sep 2, 2:22 AM EDT	Heat Advisory	TBW	16 hr
Sep 3, 4:39 AM EDT	Heat Advisory	TBW	13 hr
Sep 4, 3:10 AM EDT	Heat Advisory	TBW	15 hr
Sep 6, 5:20 PM EDT	Special Weather Statement	TBW	40 min
Sep 6, 6:02 PM EDT	Special Weather Statement	TBW	43 min
Sep 9, 4:32 PM EDT	Areal Flood Advisory	TBW	58 min
Sep 10, 2:58 PM EDT	Flood Watch	TBW	3 days
Sep 10, 4:17 PM EDT	Areal Flood Advisory	TBW	102 min
Sep 12, 2:36 PM EDT	Special Weather Statement	TBW	39 min
Sep 12, 3:13 PM EDT	Rip Current Statement	TBW	41 hr
Sep 12, 4:33 PM EDT	Special Weather Statement	TBW	42 min
Sep 13, 8:10 AM EDT	High Surf Advisory	TBW	12 hr
Sep 13, 8:09 PM EDT	High Surf Advisory	TBW	12 hr
Sep 14, 8:15 PM EDT	Rip Current Statement	TBW	72 hr
Sep 20, 3:27 AM EDT	Lake Wind Advisory	TBW	16 hr
Sep 20, 3:12 PM EDT	Special Weather Statement	TBW	48 min
Sep 21, 3:12 AM EDT	Lake Wind Advisory	TBW	19 hr
Sep 29, 2:37 PM EDT	Rip Current Statement	TBW	29 hr
Sep 29, 4:58 PM EDT	River Flood Warning	TBW	39 hr
Oct 9, 3:28 AM EDT	Rip Current Statement	TBW	65 hr
Oct 14, 7:01 AM EDT	Dense Fog Advisory	TBW	119 min
Oct 19, 8:46 AM EDT	Lake Wind Advisory	TBW	10 hr
Oct 28, 3:49 AM EDT	Rip Current Statement	TBW	64 hr
Oct 31, 3:29 AM EDT	Rip Current Statement	TBW	11 hr
Nov 1, 1:19 PM EST	Rip Current Statement	TBW	48 hr
Nov 7, 10:43 AM EST	Tropical Storm Watch	TBW	4 days
Nov 7, 10:13 PM EST	Tropical Storm Warning	TBW	4 days
Nov 10, 9:41 PM EST	Flash Flood Watch	TBW	33 hr
Nov 10, 10:16 PM EST	Storm Surge Watch	TBW	12 hr
Nov 11, 12:19 AM EST	Rip Current Statement	TBW	55 hr
Nov 11, 12:19 AM EST	High Surf Advisory	TBW	31 hr
Nov 11, 4:20 AM EST	Hurricane Watch	TBW	17 hr
Nov 11, 8:04 AM EST	Tornado Watch	SPC	9 hr
Nov 11, 8:35 AM EST	River Flood Warning	TBW	33 hr
Nov 11, 8:35 AM EST	River Flood Warning	TBW	4 days
Nov 11, 10:35 AM EST	Storm Surge Warning	TBW	21 hr
Nov 11, 11:56 AM EST	Mesoscale Discussion	SPC	2 hr
Nov 11, 12:24 PM EST	Tornado Warning	TBW	21 min
Nov 11, 12:50 PM EST	Tornado Warning	TBW	25 min
Nov 11, 4:01 PM EST	Mesoscale Discussion	SPC	59 min
Nov 11, 4:58 PM EST	Tornado Warning	TBW	32 min
Nov 11, 5:54 PM EST	Tornado Warning	TBW	25 min
Nov 11, 8:17 PM EST	River Flood Warning	TBW	4 days
Nov 11, 8:41 PM EST	Areal Flood Warning	TBW	3 hr
Nov 11, 10:16 PM EST	Flash Flood Warning	TBW	3 hr
Nov 11, 11:49 PM EST	Areal Flood Warning	TBW	86 min
Nov 12, 1:15 AM EST	Areal Flood Warning	TBW	3 hr
Nov 12, 4:41 AM EST	Coastal Flood Advisory	TBW	8 hr
Nov 30, 2:22 AM EST	Rip Current Statement	TBW	41 hr
Nov 30, 2:22 AM EST	High Surf Advisory	TBW	41 hr
Nov 30, 5:56 AM EST	Tornado Warning	TBW	34 min
Nov 30, 7:13 AM EST	Special Weather Statement	TBW	47 min
Nov 30, 7:26 AM EST	Special Weather Statement	TBW	49 min
Dec 7, 3:25 AM EST	Rip Current Statement	TBW	49 hr
Dec 7, 2:20 PM EST	High Surf Advisory	TBW	20 hr
Dec 12, 11:44 PM EST	Dense Fog Advisory	TBW	10 hr
Dec 16, 4:51 AM EST	Rip Current Statement	TBW	62 hr
Dec 16, 4:09 PM EST	Tornado Warning Tornado observedConsiderable damage threat	TBW	23 min
Dec 16, 4:42 PM EST	Tornado Warning	TBW	33 min
Dec 16, 5:02 PM EST	Tornado Warning Tornado observed	TBW	28 min
Dec 20, 1:37 PM EST	Rip Current Statement	TBW	35 hr
Dec 20, 3:55 PM EST	Mesoscale Discussion	SPC	2 hr
Dec 20, 6:11 PM EST	Severe Thunderstorm Warning	TBW	34 min
Dec 20, 6:20 PM EST	Mesoscale Discussion	SPC	2 hr
Dec 23, 7:42 PM EST	Rip Current Statement	TBW	59 hr
Dec 24, 12:30 PM EST	High Surf Advisory	TBW	34 hr
Dec 24, 1:58 PM EST	Wind Chill Advisory	TBW	18 hr
Dec 24, 6:24 PM EST	Severe Thunderstorm Warning	TBW	51 min
Dec 24, 7:12 PM EST	Severe Thunderstorm Warning	TBW	18 min
Dec 24, 7:14 PM EST	Special Weather Statement	TBW	46 min
Dec 24, 7:56 PM EST	Special Weather Statement	TBW	64 min

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	21
Tornado Warning	14
Severe Thunderstorm Watch	1
Tornado Watch	3
Mesoscale Discussion	18
Special Weather Statement	34
Flooding
Areal Flood Warning	3
Flash Flood Warning	1
River Flood Warning	7
Flash Flood Watch	1
Flood Watch	2
Areal Flood Advisory	15
Heat
Heat Advisory	14
Cold
Freeze Watch	1
Wind Chill Advisory	2
Wind and dust
Lake Wind Advisory	4
Wind Advisory	1
Fire
Red Flag Warning	3
Fog and smoke
Dense Fog Advisory	3
Tropical
Storm Surge Warning	1
Tropical Storm Warning	1
Hurricane Watch	1
Storm Surge Watch	1
Tropical Storm Watch	1
Coast and beach
Coastal Flood Advisory	2
High Surf Advisory	10
Coastal Flood Statement	1
Rip Current Statement	36

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2019 2021

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.