Alert archive / Georgia / Flash Flood Warnings in 2012

Flash Flood Warning 37, NWS Tallahassee, FL

August 16, 2012Dougherty County, Worth County, Georgia

NWS Tallahassee, FL issued this flash flood warning at Aug 16, 2012, 6:52 PM EDT for Dougherty County, Worth County, Georgia. It was in force for 2 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: Aug 16, 2012, 6:52 PM EDT (22:52 UTC)
Expired: Aug 16, 2012, 9:16 PM EDT
In force: 2 hr
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: None

Counties Dougherty County, GA, Worth County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.9 hours before the alert went out and 143 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: 3769 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 522 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

752 
WGUS52 KTAE 162252
FFWTAE
GAC095-321-170145-
/O.NEW.KTAE.FF.W.0037.120816T2252Z-120817T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
652 PM EDT THU AUG 16 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN WORTH COUNTY IN SOUTH CENTRAL GEORGIA...
  EXTREME NORTHEASTERN DOUGHERTY COUNTY IN SOUTHWEST GEORGIA...

* UNTIL 945 PM EDT

* AT 648 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED FLASH
  FLOODING FROM A THUNDERSTORM OVER EXTREME WEST CENTRAL WORTH
  COUNTY...MOVING SOUTHEAST AT 5 MPH. RECENT RADAR ESTIMATES OF
  6 INCHES HAVE BEEN OBSERVED WITH THIS STORM...MOST OF THIS WITHIN
  LESS THAN 2 HOURS. AN ADDITIONAL 2 INCHES ARE POSSIBLE BEFORE
  THE STORM DISSIPATES. 

* THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
  MAINLY RURAL AREAS OF THE INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DON'T DROWN.

&&

LAT...LON 3166 8393 3160 8396 3164 8403 3166 8401
      3167 8402 3169 8402 3169 8401

$$

9-FOURNIER

1 follow-up statement

403 
WGUS72 KTAE 170116
FFSTAE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
916 PM EDT THU AUG 16 2012

GAC095-321-170120-
/O.CAN.KTAE.FF.W.0037.000000T0000Z-120817T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WORTH GA-DOUGHERTY GA-
916 PM EDT THU AUG 16 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME
NORTHEASTERN DOUGHERTY AND WESTERN WORTH COUNTIES...

ALTHOUGH RADARS ESTIMATED 4 TO 6 INCHES OR RAIN FELL 
IN LESS THAN 3 HOURS EARLIER THIS EVENING...THERE HAVE 
BEEN NO REPORTS OF FLASH FLOODING. THE RAIN ENDED EARLY 
THIS EVENING...BUT THERE STILL MAY BE SOME STANDING WATER
IN LOW LYING AREAS. THIS COULD MAKE DRIVING ON LOW LYING
ROADS HAZARDOUS TONIGHT.   

LAT...LON 3166 8393 3160 8396 3164 8403 3166 8401
      3167 8402 3169 8402 3169 8401

$$

9-FOURNIER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 12:20 AM EDT	Areal Flood Advisory	TAE	Baker	55 min
Aug 16, 4:34 PM EDT	Areal Flood Warning	TAE	Turner, Worth	3 hr
Aug 16, 5:04 PM EDT	Severe Thunderstorm Warning	TAE	Ben Hill	26 min
Aug 16, 5:19 PM EDT	Severe Thunderstorm Warning	TAE	Dougherty, Lee, Worth	26 min
Aug 16, 5:58 PM EDT	Areal Flood Warning	TAE	Dougherty, Lee, Tift, Turner, Worth	3 hr
Aug 16, 6:22 PM EDT	Severe Thunderstorm Warning	TAE	Dougherty, Lee, Worth	23 min
Aug 16, 6:40 PM EDT	Severe Thunderstorm Warning	TAE	Dougherty, Lee, Worth	35 min

Nearby

Flash Flood Warnings in Georgia, 2012 Every flash flood warning in 2012

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.