Alert archive / Georgia / Flash Flood Warnings in 2009

Flash Flood Warning 23, NWS Atlanta, GA

September 17, 2009Crawford County, Taylor County, Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 17, 2009, 10:14 PM EDT for Crawford County, Taylor County, Georgia. It was in force for 6 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
Sep 17, 2009, 10:14 PM EDT (02:14 UTC)
Expired
Sep 18, 2009, 4:15 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Crawford County, GA, Taylor County, GA

The radar

The Robins AFB radar (KJGX), 71 km from the middle of the area, began a volume at 02:16 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.2 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2009-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 722 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2009-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.193958Sfc1 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
722 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
516 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
61 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 KFFC 180214
FFWFFC
GAC079-269-180815-
/O.NEW.KFFC.FF.W.0023.090918T0214Z-090918T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1014 PM EDT THU SEP 17 2009

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN CRAWFORD COUNTY IN CENTRAL GEORGIA
  EASTERN TAYLOR COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 415 AM EDT FRIDAY

* AT 1006 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED NUMEROUS THUNDERSTORMS WITH HEAVY RAIN OVER THE WARNED   
  AREA. WEATHER RADAR PRECIPITATION ESTIMATES OF 2 TO 4 INCHES OF
  RAIN HAS FALLEN IN THE LITTLE VINE AND BEAVER CREEK BASINS AS WELL 
  AS THE FLINT RIVER.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HORNS AND
  LEE POPE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

&&

LAT...LON 3241 8433 3275 8411 3269 8395 3255 8393
      3256 8395 3251 8401 3249 8401 3252 8407
      3251 8407 3249 8412 3245 8415

$$
16
1 follow-up statement
000 
WGUS72 KFFC 180627
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
227 AM EDT FRI SEP 18 2009

GAC079-269-180815-
/O.CON.KFFC.FF.W.0023.000000T0000Z-090918T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TAYLOR GA-CRAWFORD GA-
227 AM EDT FRI SEP 18 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM EDT FOR
SOUTHWESTERN CRAWFORD AND EASTERN TAYLOR COUNTIES...

AT 215 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
INDICATED NUMEROUS SHOWERS WITH OCCASIONAL HEAVY RAIN MOVING OVER 
THE WARNED AREA. RADAR PRECIPITATION ESTIMATES OF 4 TO 7 INCHES OF   
RAIN HAS FALLEN IN THE LITTLE VINE AND BEAVER CREEK BASINS AS WELL   
AS THE FLINT RIVER SINCE 730 PM EDT THURSDAY.. FLOODING OF ROADS AND 
POSSIBLE WASHOUTS OF DIRT ROADS CAN BE EXPECTED BY MORNING.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO REYNOLDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

&&

LAT...LON 3241 8433 3275 8411 3269 8395 3255 8393
      3256 8395 3251 8401 3249 8401 3252 8407
      3251 8407 3249 8412 3245 8415

$$
16

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 17, 8:01 PM EDTFlash Flood WarningFFCPutnam6 hr
Sep 17, 8:14 PM EDTFlash Flood WarningFFCMarion, Talbot, Taylor6 hr
Sep 17, 11:48 PM EDTAreal Flood WarningFFCMorgan9 hr
Sep 18, 12:41 AM EDTFlash Flood WarningFFCHouston6 hr
Sep 18, 2:02 AM EDTAreal Flood WarningFFCPutnam12 hr
Sep 18, 2:18 AM EDTAreal Flood WarningFFCMarion, Talbot, Taylor12 hr
Sep 18, 4:30 AM EDTAreal Flood WarningFFCCrawford, Macon, Peach, Taylor9 hr
Sep 18, 11:07 AM EDTRiver Flood WarningFFCNewton, Rockdale23 hr

Nearby

Flash Flood Warnings in Georgia, 2009Every flash flood warning in 2009

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.