Alert archive / Georgia / Areal Flood Warnings in 2012

Areal Flood Warning 21, NWS Tallahassee, FL

August 16, 20125 counties in Georgia

NWS Tallahassee, FL issued this areal flood warning at Aug 16, 2012, 5:58 PM EDT for 5 counties in Georgia. 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
Aug 16, 2012, 5:58 PM EDT (21:58 UTC)
Expired
Aug 16, 2012, 9:00 PM EDT
In force
3 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Flood severity
None

Counties Dougherty County, GA, Lee County, GA, Tift County, GA, Turner County, GA, Worth County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.0 hours before the alert went out and 144 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2012-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3769 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2012-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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.

989 
WGUS42 KTAE 162158
FLWTAE

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

GAC095-177-277-287-321-170100-
/O.NEW.KTAE.FA.W.0021.120816T2158Z-120817T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TURNER GA-TIFT GA-LEE GA-WORTH GA-DOUGHERTY GA-
558 PM EDT THU AUG 16 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLOOD WARNING FOR SMALL STREAMS IN...
  NORTHWESTERN TIFT COUNTY IN SOUTH CENTRAL GEORGIA...
  SOUTHWESTERN TURNER COUNTY IN SOUTH CENTRAL GEORGIA...
  NORTHERN WORTH COUNTY IN SOUTH CENTRAL GEORGIA...
  EXTREME NORTHEASTERN DOUGHERTY COUNTY IN SOUTHWEST GEORGIA...
  SOUTHEASTERN LEE COUNTY IN SOUTHWEST GEORGIA...

* UNTIL 900 PM EDT

* AT 557 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED AN AREA
OF STRONG AND SLOW MOVING THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL
ACROSS THE AREA. THESE STORMS ARE PRODUCING RAINFALL RATES OF 2 TO
4 INCHES PER HOUR...WITH TOTAL ACCUMULATIONS OF UP TO 5 INCHES
POSSIBLE.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DON'T DROWN.

&&

LAT...LON 3156 8349 3144 8365 3171 8422 3182 8403

$$

9-FOURNIER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 12:20 AM EDTAreal Flood AdvisoryTAEBaker55 min
Aug 16, 4:34 PM EDTAreal Flood WarningTAETurner, Worth3 hr
Aug 16, 5:04 PM EDTSevere Thunderstorm WarningTAEBen Hill26 min
Aug 16, 5:19 PM EDTSevere Thunderstorm WarningTAEDougherty, Lee, Worth26 min
Aug 16, 6:22 PM EDTSevere Thunderstorm WarningTAEDougherty, Lee, Worth23 min
Aug 16, 6:40 PM EDTSevere Thunderstorm WarningTAEDougherty, Lee, Worth35 min
Aug 16, 6:52 PM EDTFlash Flood WarningTAEDougherty, Worth2 hr

Nearby

Areal Flood Warnings in Georgia, 2012Every areal 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.