Alert archive / Alabama / Flash Flood Warnings in 2021
Flash Flood Warning 36, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at Sep 17, 2021, 6:27 PM CDT for Colbert County, Lauderdale County, Alabama. It was in force for 93 min. 7 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 17, 2021, 6:27 PM CDT (23:27 UTC)
- Expired
- Sep 17, 2021, 8:00 PM CDT
- In force
- 93 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Colbert County, AL, Lauderdale County, AL
The radar
The Columbus AFB radar (KGWX), 110 km from the middle of the area, began a volume at 23:31 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 17, 6:31 PM CDT | FLASH FLOOD | 1 W Cherokee, AL | CORRECTS PREVIOUS FLASH FLOOD REPORT FROM 1 W CHEROKEE. FLASH FLOODING WAS REPORTED A THE INTERSECTION OF MT HESTER ROAD AND FORREST DRIVE IN CHEROKEE. |
| Sep 17, 6:31 PM CDT | FLASH FLOOD | 1 W Cherokee, AL | FLASH FLOODING WAS REPORTED A THE INTERSECTION OF MT HESTER ROAD AND FORREST DRIVE IN CHEROKEE. |
| Sep 17, 6:44 PM CDT | FLASH FLOOD | 1 Ssw Cherokee, AL | FLASH FLOODING WAS REPORTED AT THE INTERSECTION OF COVE ROAD AND CHICKASAW DRIVE. |
| Sep 17, 6:45 PM CDT | FLASH FLOOD | 1 Nne Cherokee, AL | FLASH FLOODING WAS REPORTED AT THE INTERSECTION OF 6TH STREET AND NORTH PIKE. |
| Sep 17, 6:54 PM CDT | FLASH FLOOD | 2 Ne Cherokee, AL | FLASH FLOODING WAS REPORTED AT THE INTERSECTION OF MULBERRY LANE AND MOODY LANE. |
| Sep 17, 7:12 PM CDT | FLASH FLOOD | 2 Ese Cherokee, AL | FLASH FLOODING WAS REPORTED AT THE INTERSECTION OF OLD LEE HIGHWAY AND BARNES LANE. |
| Sep 17, 7:16 PM CDT | FLASH FLOOD | 1 Ene Sheffield, AL | FLASH FLOODING WAS REPORTED AT THE INTERSECTION OF NORTH JACKSON HIGHWAY AND E 2ND STREET. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 11.5 hours before the alert went out and 186 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
- 179 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 694 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
011
WGUS54 KHUN 172327
FFWHUN
ALC033-077-180100-
/O.NEW.KHUN.FF.W.0036.210917T2327Z-210918T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Huntsville AL
627 PM CDT Fri Sep 17 2021
The National Weather Service in Huntsville has issued a
* Flash Flood Warning for...
Southwestern Colbert County in northwestern Alabama...
South Central Lauderdale County in northwestern Alabama...
* Until 800 PM CDT.
* At 627 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts of 1.0 to 1.5 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
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...
Florence, Muscle Shoals, Sheffield, Tuscumbia, Cherokee, Pride
Landing, Barton, Red Rock and Oakland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3488 8784 3492 8780 3477 8765 3462 8798
3484 8802 3476 8790
FLASH FLOOD...RADAR INDICATED
$$
KTW1 follow-up statement
191
WGUS74 KHUN 180014
FFSHUN
Flash Flood Statement
National Weather Service Huntsville AL
714 PM CDT Fri Sep 17 2021
ALC033-077-180100-
/O.CON.KHUN.FF.W.0036.000000T0000Z-210918T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Colbert AL-Lauderdale AL-
714 PM CDT Fri Sep 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING
FOR SOUTHWESTERN COLBERT AND SOUTH CENTRAL LAUDERDALE COUNTIES...
At 714 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 3 and 6 inches of rain have
fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Florence, Muscle Shoals, Sheffield, Tuscumbia, Cherokee, Pride
Landing, Barton, Red Rock and Oakland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3488 8784 3492 8780 3477 8765 3462 8798
3484 8802 3476 8790
FLASH FLOOD...RADAR INDICATED
$$
KTWThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 4:51 PM CDT | Special Weather Statement | HUN | Colbert | 39 min |
| Sep 17, 5:11 PM CDT | Flash Flood Warning | HUN | Colbert, Lauderdale | 3 hr |
Nearby
Flash Flood Warnings in Alabama, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.