Alert archive / Alabama / Flash Flood Warnings in 2025
Flash Flood Warning 21, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at May 20, 2025, 9:35 PM CDT for 4 counties in Alabama. It was in force for 71 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 20, 2025, 9:35 PM CDT (02:35 UTC)
- Expired
- May 20, 2025, 10:46 PM CDT
- In force
- 71 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties DeKalb County, AL, Jackson County, AL, Madison County, AL, Marshall County, AL
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.6 hours before the alert went out and 176 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 735 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1407 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.0
The text
As transmitted.
246
WGUS54 KHUN 210235
FFWHUN
ALC049-071-089-095-210600-
/O.NEW.KHUN.FF.W.0021.250521T0235Z-250521T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Huntsville AL
935 PM CDT Tue May 20 2025
The National Weather Service in Huntsville has issued a
* Flash Flood Warning for...
Southeastern Madison County in north central Alabama...
East Central DeKalb County in northeastern Alabama...
Southern Jackson County in northeastern Alabama...
Northeastern Marshall County in northeastern Alabama...
* Until 100 AM CDT.
* At 935 PM CDT, emergency management reported thunderstorms
producing heavy rain in Woodville. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts of 2 to 3 inches are
possible for northeast Alabama. Flash flooding is already
occurring. For areas in a tornado warning, please seek shelter
from the tornado as the tornado is a larger threat to your life
than this flooding at this time.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management reported.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Scottsboro, Fort Payne, Rainsville, Henagar, Sylvania, Owens Cross
Roads, Hollywood, Powell, Gurley, Section, Woodville, Ider,
Pisgah, Valley Head, Hammondville, Mentone, Dutton, Langston,
Paint Rock and Larkinsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3469 8643 3474 8643 3467 8554 3453 8552
3452 8551 3452 8552 3451 8553 3450 8555
3450 8556 3449 8556 3448 8557 3447 8557
3447 8558 3446 8558 3457 8646
FLASH FLOOD...OBSERVED
$$
301 follow-up statement
716
WGUS74 KHUN 210346
FFSHUN
Flash Flood Statement
National Weather Service Huntsville AL
1046 PM CDT Tue May 20 2025
ALC049-071-089-095-210356-
/O.CAN.KHUN.FF.W.0021.000000T0000Z-250521T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeKalb AL-Jackson AL-Madison AL-Marshall AL-
1046 PM CDT Tue May 20 2025
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN MADISON, EAST
CENTRAL DEKALB, SOUTHERN JACKSON AND NORTHEASTERN MARSHALL
COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 3469 8643 3474 8643 3467 8554 3453 8552
3452 8551 3452 8552 3451 8553 3450 8555
3450 8556 3449 8556 3448 8557 3447 8557
3447 8558 3446 8558 3457 8646
$$
KTWThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 7:01 PM CDT | Tornado Warning | HUN | Limestone, Madison, Morgan | 29 min |
| May 20, 7:12 PM CDT | Severe Thunderstorm Warning | HUN | Limestone, Madison | 18 min |
| May 20, 7:21 PM CDT | Tornado Warning | HUN | DeKalb, Jackson | 39 min |
| May 20, 7:27 PM CDT | Severe Thunderstorm Warning | HUN | Limestone, Madison, Morgan | 33 min |
| May 20, 7:30 PM CDT | Tornado Warning | HUN | Jackson, Madison, Marshall, Morgan | 30 min |
| May 20, 7:50 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Jackson | 40 min |
| May 20, 7:54 PM CDT | Tornado Warning | HUN | DeKalb, Jackson, Madison, Marshall | 51 min |
| May 20, 7:56 PM CDT | Severe Thunderstorm Warning | HUN | Franklin, Lawrence | 52 min |
| May 20, 8:04 PM CDT | Tornado Warning | HUN | Jackson, Madison, Morgan | 26 min |
| May 20, 8:08 PM CDT | Severe Thunderstorm Warning | HUN | Madison, Morgan | 35 min |
| May 20, 8:25 PM CDT | Tornado Warning | HUN | DeKalb, Jackson | 20 min |
| May 20, 8:32 PM CDT | Severe Thunderstorm Warning | HUN | Cullman, Madison, Marshall, Morgan | 28 min |
| May 20, 8:41 PM CDT | Tornado Warning | HUN | DeKalb, Jackson, Marshall | 49 min |
| May 20, 8:52 PM CDT | Tornado Warning | HUN | Cullman, DeKalb, Marshall | 53 min |
| May 20, 9:13 PM CDT | Tornado Warning | HUN | Jackson, Madison, Marshall | 17 min |
| May 20, 9:15 PM CDT | Areal Flood Warning | HUN | Madison | 3 hr |
| May 20, 9:28 PM CDT | Tornado Warning | HUN | DeKalb | 31 min |
| May 20, 9:37 PM CDT | Special Weather Statement | HUN | Cullman, Jackson, Marshall | 38 min |
| May 20, 9:46 PM CDT | Tornado Warning | HUN | DeKalb | 13 min |
| May 20, 10:03 PM CDT | Special Weather Statement | HUN | DeKalb, Marshall | 27 min |
| May 21, 12:33 AM CDT | Areal Flood Warning | HUN | Madison | 9 hr |
Nearby
Flash Flood Warnings in Alabama, 2025Every flash flood warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.