Weather alerts in Florida, 2016
6,410 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 6,410
- Warnings
- 2,215
- Watches
- 142
- Advisories
- 999
- Busiest month
- June915 alerts
- Busiest day
- February 24, 2016119 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
30 of 119 tornado warnings covering Florida in 2016 had a tornado report inside them; 49 of 66 tornado reports fell inside a warning, on average 13 minutes after it went out.
Florida, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 119 | 30 | 75% | 66 | 74% | 13 min |
| Severe thunderstorm warnings | 492 | 219 | 55% | 581 | 63% | 21 min |
| Flash flood warnings | 25 | 14 | 44% | 26 | 92% | 65 min |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Melbourne, FL: tornado warnings | 15 | 4 | 73% | 7 | 71% | 8 min |
| NWS Melbourne, FL: severe thunderstorm warnings | 73 | 16 | 78% | 52 | 42% | 23 min |
| NWS Melbourne, FL: flash flood warnings | 1 | 1 | 0% | 1 | 100% | 45 min |
| NWS Jacksonville, FL: tornado warnings | 17 | 3 | 82% | 12 | 67% | 6 min |
| NWS Jacksonville, FL: severe thunderstorm warnings | 173 | 81 | 53% | 211 | 66% | 17 min |
| NWS Jacksonville, FL: flash flood warnings | 3 | 1 | 67% | 2 | 50% | 170 min |
| NWS Miami, FL: tornado warnings | 28 | 7 | 75% | 17 | 71% | 5 min |
| NWS Miami, FL: severe thunderstorm warnings | 60 | 20 | 67% | 85 | 47% | 11 min |
| NWS Tampa Bay, FL: tornado warnings | 32 | 10 | 69% | 16 | 81% | 14 min |
| NWS Tampa Bay, FL: severe thunderstorm warnings | 69 | 23 | 67% | 67 | 58% | 15 min |
| NWS Tampa Bay, FL: flash flood warnings | 2 | 1 | 50% | 2 | 50% | 28 min |
| NWS Tallahassee, FL: tornado warnings | 43 | 10 | 77% | 25 | 88% | 16 min |
| NWS Tallahassee, FL: severe thunderstorm warnings | 288 | 192 | 33% | 466 | 88% | 25 min |
| NWS Tallahassee, FL: flash flood warnings | 20 | 13 | 35% | 38 | 97% | 84 min |
| NWS Mobile, AL: tornado warnings | 32 | 8 | 75% | 20 | 90% | 30 min |
| NWS Mobile, AL: severe thunderstorm warnings | 207 | 66 | 68% | 238 | 75% | 25 min |
| NWS Mobile, AL: flash flood warnings | 39 | 17 | 56% | 40 | 90% | 87 min |
| NWS Key West, FL: tornado warnings | 1 | 0 | 100% | 1 | 0% | |
| NWS Key West, FL: severe thunderstorm warnings | 1 | 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
6,410 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Broward County284
- Okaloosa County262
- Escambia County260
- Santa Rosa County258
- Palm Beach County253
- Walton County250
- Miami-Dade County241
- Duval County220
- Volusia County218
- Hillsborough County213
- Nassau County212
- Collier County205
- Bay County195
- Manatee County193
- Orange County180
- Charlotte County180
- Sarasota County178
- Lee County178
- Gulf County172
- Marion County172
- Pinellas County170
- Holmes County162
- Flagler County162
- Suwannee County155
- Jackson County153
- Washington County151
- Lake County149
- Osceola County149
- Baker County142
- Pasco County142
- Union County141
- Franklin County141
- Polk County140
- Bradford County139
- Leon County137
- Gilchrist County137
- Calhoun County135
- Hendry County132
- Alachua County132
- Wakulla County131
27 more counties
- Jefferson County125
- DeSoto County125
- Glades County122
- Seminole County121
- Gadsden County116
- Indian River County115
- Putnam County115
- Saint Johns County115
- Hernando County113
- Brevard County112
- Taylor County111
- Monroe County111
- Levy County111
- Clay County111
- Okeechobee County110
- Martin County110
- Saint Lucie County108
- Citrus County107
- Columbia County105
- Hardee County102
- Madison County97
- Sumter County94
- Highlands County92
- Lafayette County90
- Liberty County86
- Dixie County86
- Hamilton County76
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20152017
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.