Severe Weather History


Hazard archive · 1950 — present

Flash Flood in Jefferson County, Alabama

145

Recorded events

2

Direct deaths

5

Direct injuries

$1.0B

Property damage

Flash Flood in Jefferson County, Alabama: 145 recorded events between 1996 and 2026. The strongest on record measured 0. That places the county #79 nationally and #4 statewide for this hazard.

Decade by decade

Flash Flood in Jefferson County, Alabama: events per decade

Flash Flood in Jefferson County, Alabama: recorded events per decade
Flash Flood in Jefferson County, Alabama: recorded events per decade

Reporting practice changed over time — early decades are undercounted, not calmer.

The busiest decade for flash flood in Jefferson County is the 2010s, when 51 of the county's 145 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.

Within the Jefferson County archive, flash flood makes up 9.0% of all recorded severe weather across 9 hazard types. Nationally the county sits at #79 for this hazard and #4 within Alabama, putting it in the 97.5 percentile of all U.S. counties.

Seasonality

Events by month

6Jan
8Feb
8Mar
15Apr
13May
28Jun
29Jul
15Aug
12Sep
3Oct
3Nov
5Dec

Jul is the peak month for flash flood in Jefferson County with 29 recorded events, while Oct is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.

Significant events

Deadliest on record

DateLocationScaleDeathsInjuriesDamage
Mar 16, 2022BROWNVILLE011$0
Jun 20, 2021HOPKINS010$0
Jun 4, 2010AYRES003$50K
Jun 28, 2025MAGELLA001$0
Source: NOAA/NCEI Storm Events · dates UTC

Most recent

Latest recorded events

DateLocationMagnitudeDamage
Jan 10, 2026GREENWOOD$0
Jan 9, 2026MC CALLA$0
Aug 20, 2025EAST LAKE0$0
Aug 1, 2025OXMOOR0$0
Jun 28, 2025MAGELLA0$0
Jun 18, 2025VESTAVIA HILLS0$0
May 18, 2025MAGELLA0$0
Apr 6, 2025PATTON CHAPLE0$0
Sep 15, 2024NORTH BIRMINGHAM0$0
Sep 14, 2024THOMAS0$0
Source: NOAA/NCEI Storm Events · dates UTC · recent entries may be preliminary

Other hazards here

More from Jefferson County

County overview →

From the record

What the reports say

Written by National Weather Service staff at the time of the event · public domain

Quick answers

Frequently asked

How many flash flood events are on record in Jefferson County, Alabama?

145 flash flood events are recorded in Jefferson County between 1996 and 2026, causing 2 direct deaths.

What is the strongest flash flood recorded in Jefferson County?

The strongest flash flood on record in Jefferson County measured 0.

Where does the flash flood data for Jefferson County come from?

All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.

Cite this page

“Flash Flood in Jefferson County, Alabama.” Severe Weather History. severeweatherhistory.com/county/alabama/jefferson-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.


Historical reference only — for official alerts visit weather.gov