Alert archive / Alabama / Flash Flood Warnings in 2011

Flash Flood Warning 65, NWS Birmingham, AL

September 21, 2011Chambers County, Lee County, Russell County, Alabama

NWS Birmingham, AL issued this flash flood warning at Sep 21, 2011, 12:27 AM CDT for Chambers County, Lee County, Russell County, Alabama. It was in force for 3 hr. 1 report 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 21, 2011, 12:27 AM CDT (05:27 UTC)
Expired: Sep 21, 2011, 3:30 AM CDT
In force: 3 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

Counties Chambers County, AL, Lee County, AL, Russell County, AL

What was reported inside it

Time	Report	Where	Remark
Sep 21, 1:31 AM CDT	FLASH FLOOD	Phenix City, AL	SIX HOUSES FLOODED WITH UP TO 6 INCHES OF WATER IN PHENIX CITY AREA. TWO HOUSES WERE IN THE SADDLEBROOK SUBDIVISION OFF OF SUMMERVILLE ROAD AND FOUR HOUSES WERE IN THE IVY CREEK SUBDIVISION OFF OF STADIUM DRIVE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 5.5 hours before the alert went out and 101 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 639 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 831 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

553 
WGUS54 KBMX 210527
FFWBMX
ALC017-081-113-210830-
/O.NEW.KBMX.FF.W.0065.110921T0527Z-110921T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1227 AM CDT WED SEP 21 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN LEE COUNTY IN EAST CENTRAL ALABAMA...
  NORTHEASTERN RUSSELL COUNTY IN SOUTHEAST ALABAMA...
  SOUTHEASTERN CHAMBERS COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 330 AM CDT

* AT 1221 AM CDT...NATIONAL WEATHER SERVICE INDICATED SLOW MOVING    
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 3   
  TO 6 INCHES OF RAIN HAS FALLEN OVER THE LAST COUPLE OF HOURS AND   
  ANOTHER 1 TO 3 IS POSSIBLE THROUGH 330 AM CDT.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LANETT...PHENIX CITY...SMITHS...VALLEY...BEANS MILL...BLEECKER...
  CHAMBERS COUNTY LAKE...CUSSETA...FAIRFAX...GRIFFEN MILL...
  HUGULEY...LADONIA...LAKEVIEW AND SMITHS STATION.

THE LANETT AND VALLEY AREAS IN SOUTHEAST CHAMBERS COUNTY HAVE 
ALREADY RECEIVED 3 TO 4 INCHES...AND ANOTHER 1 TO 3 COULD EXACERBATE 
FLOODING THAT HAS ALREADY OCCURRED IN THAT AREA.

REPORTS HAVE COME INTO THE NATIONAL WEATHER SERVICE THAT 3 TO 4 
INCHES OF RAIN HAS FALLEN ALONG THE CHATTAHOOCHEE RIVER...INCLUDING 
PHENIX CITY AND SMITHS STATION.  ANOTHER 1 TO 2 INCHES IS POSSIBLE 
HERE OVER THE NEXT HOUR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A VERY DANGEROUS AND LIFE THREATENING FLOODING SITUATION. YOU
SHOULD NOT ATTEMPT TO TRAVEL. STAY HOME UNLESS YOU ARE FORCED TO
EVACUATE TO HIGHER GROUND.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3242 8496 3236 8498 3237 8526 3281 8543
      3291 8520 3277 8513 3275 8514 3272 8511
      3269 8511 3267 8508 3264 8509 3258 8506
      3255 8503

$$

27

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 20, 7:23 PM CDT	Special Weather Statement	BMX	Chambers, Lee	52 min
Sep 20, 8:04 PM CDT	Areal Flood Advisory	BMX	Chambers, Lee	116 min
Sep 20, 8:41 PM CDT	Special Weather Statement	BMX	Lee	49 min
Sep 20, 9:02 PM CDT	Flash Flood Warning	BMX	Chambers	2 hr
Sep 20, 11:34 PM CDT	Areal Flood Advisory	BMX	Russell	116 min
Sep 21, 6:31 PM CDT	Special Weather Statement	BMX	Montgomery	29 min

Nearby

Flash Flood Warnings in Alabama, 2011 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.