Alert archive / Alabama / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS Tallahassee, FL

August 7, 2008Henry County, Alabama; Early County, Georgia

NWS Tallahassee, FL issued this flash flood warning at Aug 7, 2008, 6:00 PM CDT for Henry County, Alabama; Early County, Georgia. It was in force for 63 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: Aug 7, 2008, 6:00 PM CDT (23:00 UTC)
Expired: Aug 7, 2008, 7:03 PM CDT
In force: 63 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: None

Counties Henry County, AL, Early County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.0 hours before the alert went out and 147 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: 2910 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 900 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KTAE 072300
FFWTAE
ALC067-GAC099-080030-
/O.NEW.KTAE.FF.W.0002.080807T2300Z-080808T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
600 PM CDT THU AUG 7 2008

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL HENRY COUNTY IN SOUTHEAST ALABAMA...
  EXTREME NORTHWESTERN EARLY COUNTY IN SOUTHWEST GEORGIA...

* UNTIL 730 PM CDT/830 PM EDT/

* AT 545 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  OVER 5 INCHES OF RAIN HAS FALLEN OVER THE DRAINAGES SOUTH OF 
  SHORTERVILLE THE PAST TWO HOURS. FLASH FLOODING MAY IMPACT RURAL
  ROADS AND DRAINAGES IN THE WARNED AREA INCLUDING SR 97 AND ALONG
  BENNETT MILL CREEK.

* A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
  DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF   
  UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE.

* REPORT FLOODING OR FLOOD DAMAGE TO THE NATIONAL WEATHER SERVICE
  IN TALLAHASSEE AT (8 5 0) 9 4 2 8 8 3 3. OR...YOU MAY CONTACT THE
  NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT.
  THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 3157 8509 3158 8505 3156 8504 3153 8504
      3150 8505 3152 8507

$$

52-LANIER

1 follow-up statement

000 
WGUS72 KTAE 080003
FFSTAE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
803 PM EDT THU AUG 7 2008

ALC067-GAC099-080012-
/O.CAN.KTAE.FF.W.0002.000000T0000Z-080808T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HENRY AL-EARLY GA-
703 PM CDT THU AUG 7 2008

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME
NORTHWESTERN EARLY AND EAST CENTRAL HENRY COUNTIES. VISUAL 
INSPECTION BY LOCAL EM INDICATES NO FLOODING OCCURRING...

LAT...LON 3157 8509 3158 8505 3156 8504 3153 8504
      3150 8505 3152 8507

$$

52-LANIER

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 7, 4:52 PM CDT	Severe Thunderstorm Warning	TAE	Henry	38 min
Aug 7, 5:38 PM CDT	Areal Flood Advisory	TAE	Henry	67 min
Aug 7, 6:03 PM CDT	Severe Thunderstorm Warning	TAE	Geneva, Houston	27 min
Aug 7, 3:07 PM CDT	Severe Thunderstorm Warning	TAE	Irwin, Tift, Turner, Worth	23 min
Aug 7, 3:22 PM CDT	Severe Thunderstorm Warning	TAE	Decatur, Seminole	38 min
Aug 7, 3:39 PM CDT	Areal Flood Advisory	TAE	Turner, Worth	51 min
Aug 7, 4:28 PM CDT	Severe Thunderstorm Warning	TAE	Calhoun, Early	47 min
Aug 7, 5:01 PM CDT	Severe Thunderstorm Warning	TAE	Calhoun, Randolph, Terrell	59 min

Nearby

Flash Flood Warnings in Alabama, 2008 Flash Flood Warnings in Georgia, 2008 Every flash flood warning in 2008

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.