Alert archive / Alabama / Flash Flood Warnings in 2011
Flash Flood Warning 39, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at Jul 14, 2011, 5:52 PM CDT for Colbert County, Lauderdale County, Alabama. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2011, 5:52 PM CDT (22:52 UTC)
- Expired
- Jul 14, 2011, 9:00 PM CDT
- In force
- 3 hr
- 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), 116 km from the middle of the area, began a volume at 22:55 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.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 10.9 hours before the alert went out and 173 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
- 1178 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 880 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- -24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
240
WGUS54 KHUN 142252
FFWHUN
ALC033-077-150200-
/O.NEW.KHUN.FF.W.0039.110714T2252Z-110715T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
552 PM CDT THU JUL 14 2011
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN COLBERT COUNTY IN NORTHWEST ALABAMA...
WESTERN LAUDERDALE COUNTY IN NORTHWEST ALABAMA...
* UNTIL 900 PM CDT
* AT 550 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RADAR INDICATES AROUND TWO TO THREE INCHES OF RAIN
HAVE FALLEN IN PORTIONS OF THE WARNED AREA. AN ADDITIONAL ONE TO
TWO INCHES OF RAIN ARE POSSIBLE IN THESE AREAS...PARTICULARLY
AROUND WATERLOO TO THE TENNESSEE BORDER.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FLORENCE...MUSCLE SHOALS...SHEFFIELD AND TUSCUMBIA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3501 8820 3501 8788 3489 8771 3469 8762
3478 8808 3483 8812 3489 8811 3493 8817
3496 8818 3499 8821 3501 8821
$$
KDW2 follow-up statements
666
WGUS74 KHUN 150113
FFSHUN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
813 PM CDT THU JUL 14 2011
ALC033-077-150200-
/O.CON.KHUN.FF.W.0039.000000T0000Z-110715T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COLBERT AL-LAUDERDALE AL-
813 PM CDT THU JUL 14 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WESTERN LAUDERDALE AND
NORTHWESTERN COLBERT COUNTIES UNTIL 900 PM CDT...
AT 812 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS HAVE DIMINISHED ACROSS THE WARNED AREA.
NEVERTHELESS...RADAR ESTIMATED RAINFALL AMOUNTS UP TO 5 INCHES HAVE
OCCURRED IN THE WARNED AREA. ALTHOUGH RAINFALL HAS SUBSIDED
RECENTLY...FLASH FLOODING MAY BE STILL BE ONGOING IN SOME LOCATIONS.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. FLASH IS EXPECTED TO OCCUR OVER MAINLY RURAL AREAS OF
NORTHWESTERN COLBERT AND WESTERN LAUDERDALE COUNTIES...INCLUDING THE
TOWNS OF OAKLAND...RIVERTON...THREET...WATERLOO AND WRIGHT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3501 8788 3492 8778 3473 8782 3473 8783
3482 8805 3487 8807 3489 8811 3493 8817
3496 8818 3499 8821 3501 8821
$$
KDW191
WGUS74 KHUN 150152
FFSHUN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
852 PM CDT THU JUL 14 2011
ALC033-077-150207-
/O.EXP.KHUN.FF.W.0039.000000T0000Z-110715T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COLBERT AL-LAUDERDALE AL-
852 PM CDT THU JUL 14 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WESTERN LAUDERDALE
AND NORTHWESTERN COLBERT COUNTIES WILL BE ALLOWED TO EXPIRE AT 900 PM
CDT...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 3501 8788 3492 8778 3473 8782 3473 8783
3482 8805 3487 8807 3489 8811 3493 8817
3496 8818 3499 8821 3501 8821
$$
KDWThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 4:27 PM CDT | Special Weather Statement | HUN | Lauderdale | 48 min |
| Jul 14, 4:45 PM CDT | Special Weather Statement | HUN | Jackson | 45 min |
| Jul 14, 5:22 PM CDT | Special Weather Statement | HUN | Cullman | 38 min |
| Jul 14, 6:14 PM CDT | Special Weather Statement | HUN | DeKalb | 31 min |
| Jul 14, 6:25 PM CDT | Special Weather Statement | HUN | Cullman | 35 min |
| Jul 14, 6:44 PM CDT | Special Weather Statement | HUN | DeKalb | 31 min |
| Jul 14, 6:51 PM CDT | Special Weather Statement | HUN | Madison | 39 min |
Nearby
Flash Flood Warnings in Alabama, 2011Every flash flood warning in 2011
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; radar from the NEXRAD Level II archive.