Alert archive / Florida / Broward County / Flash Flood Warnings
Flash Flood Warnings in Broward County, Florida, 2023
12 flash flood warnings in 2023. An alert counts here when it covered this county. The archive of flash flood warnings reaches back to 1986.
Broward County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Flash Flood Warnings
- 12
- Busiest month
- April6 flash flood warnings
- Busiest day
- April 12, 20234 flash flood warnings
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 12 flash flood warnings covering Broward County in 2023 had a flash flood report inside them; 6 of 11 flash flood reports fell inside a warning, on average 101 minutes after it went out.
Broward County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 12 | 4 | 67% | 11 | 55% | 101 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Miami, FL: flash flood warnings | 25 | 9 | 64% | 19 | 68% | 76 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 |
|---|---|---|---|
| Apr 12, 1:13 PM EDT | Flash Flood Warning | MFL | 6 hr |
| Apr 12, 2:39 PM EDT | Flash Flood Warning | MFL | 5 hr |
| Apr 12, 3:37 PM EDT | Flash Flood Warning | MFL | 10 hr |
| Apr 12, 6:21 PM EDT | Flash Flood Warning | MFL | 3 hr |
| Apr 12, 8:15 PM EDT | Flash Flood Warning | MFL | 3 hr |
| Apr 13, 4:29 PM EDT | Flash Flood Warning | MFL | 5 hr |
| Jun 10, 6:03 PM EDT | Flash Flood Warning | MFL | 117 min |
| Jul 8, 7:30 PM EDT | Flash Flood Warning | MFL | 90 min |
| Jul 27, 7:03 PM EDT | Flash Flood Warning | MFL | 87 min |
| Oct 1, 4:50 PM EDT | Flash Flood Warning | MFL | 85 min |
| Nov 14, 6:41 PM EST | Flash Flood Warning | MFL | 79 min |
| Nov 15, 9:20 PM EST | Flash Flood Warning | MFL | 7 hr |
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.