Alert archive / Georgia / Flash Flood Warnings in 2008

Flash Flood Warning 14, NWS Atlanta, GA

August 26, 2008Banks County, Jackson County, Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 26, 2008, 2:07 PM EDT for Banks County, Jackson 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
Aug 26, 2008, 2:07 PM EDT (18:07 UTC)
Expired
Aug 26, 2008, 8:00 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Banks County, GA, Jackson County, GA

The radar

The Greer radar (KGSP), 131 km from the middle of the area, began a volume at 18:07 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 12:00Z, 6.1 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2008-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 825 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, Peachtre/Fal Fld, GA at 12:00Z on 2008-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 348 square meters per square second.19395878Sfc1 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
825 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
459 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
348 m²/s²
0-3 km storm-relative helicity
373 m²/s²
Significant tornado parameter
1.3
Supercell composite
13.3

Open this sounding in Storm Lab

The text

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

000 
WGUS52 KFFC 261807
FFWFFC
GAC011-157-270000-
/O.NEW.KFFC.FF.W.0014.080826T1807Z-080827T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
207 PM EDT TUE AUG 26 2008

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BANKS COUNTY IN NORTHEAST GEORGIA
  NORTH CENTRAL JACKSON COUNTY IN NORTHEAST GEORGIA

* UNTIL 800 PM EDT

* AT 159 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  WIDESPREAD 2 TO 3 INCHES OF RAIN WITH THUNDERSTORMS OVER THE 
  WARNED AREA SINCE 11 AM EDT.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ALTO...
  BANKS CROSSING AND HOMER.

ADDITIONAL RAINFALL AMOUNTS UP TO AROUND ONE HALF INCH ARE POSSIBLE 
IN THE WARNED AREA.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

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 3447 8340 3439 8338 3433 8339 3429 8335
      3424 8333 3421 8338 3424 8368 3430 8362
      3435 8365 3436 8367 3441 8366 3449 8355

$$

16
2 follow-up statements
000 
WGUS72 KFFC 262156
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
556 PM EDT TUE AUG 26 2008

GAC011-157-270000-
/O.CON.KFFC.FF.W.0014.000000T0000Z-080827T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON GA-BANKS GA-
556 PM EDT TUE AUG 26 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR BANKS
AND NORTH CENTRAL JACKSON COUNTIES...

AT 548 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
HEAVY RAINFALL ALONG A LINE FROM DAHLONEGA TO SUGAR HILL TO STONE 
MOUNTAIN MOVING TO THE NORTHEAST AT 20 MPH.  THIS HEAVY RAIN WILL 
MOVE ACROSS THE WARNED AREA BETWEEN 7 AND 730 PM.  ADDITIONAL 
RAINFALL AMOUNTS OF ONE HALF TO ONE INCH IS POSSIBLE.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ALTO...
BANKS CROSSING AND HOMER.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS...OR WATERS OF UNKNOWN DEPTH...ON FOOT OR IN
AN AUTOMOBILE.

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 3447 8340 3439 8338 3433 8339 3429 8335
      3424 8333 3421 8338 3424 8368 3430 8362
      3435 8365 3436 8367 3441 8366 3449 8355

$$
000 
WGUS72 KFFC 262356
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
756 PM EDT TUE AUG 26 2008

GAC011-157-270005-
/O.EXP.KFFC.FF.W.0014.000000T0000Z-080827T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON GA-BANKS GA-
756 PM EDT TUE AUG 26 2008

...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 PM EDT FOR BANKS AND
NORTH CENTRAL JACKSON COUNTIES...

THE THREAT OF FLASH FLOODING HAS DIMINISHED ACROSS THE WARNED AREA.  
SHOWERS ARE EXPECTED TO CONTINUE MOVING ACROSS THE AREA THROUGH THIS 
EVENING...WITH ADDITIONAL RAINFALL AMOUNTS OF LESS THAN ONE-QUARTER 
INCH.

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 3447 8340 3439 8338 3433 8339 3429 8335
      3424 8333 3421 8338 3424 8368 3430 8362
      3435 8365 3436 8367 3441 8366 3449 8355

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 10:45 PM EDTTornado WarningFFCOglethorpe, Wilkes30 min
Aug 25, 11:08 PM EDTTornado WarningFFCWilkes52 min
Aug 25, 11:56 PM EDTTornado WarningFFCBibb, Houston, Twiggs49 min
Aug 26, 12:01 AM EDTTornado WarningFFCBarrow, Gwinnett, Oconee, Walton44 min
Aug 26, 8:09 AM EDTTornado WarningFFCCobb, DeKalb, Fulton36 min
Aug 26, 9:21 AM EDTFlash Flood WarningFFCCobb4 hr
Aug 26, 9:31 AM EDTTornado WarningFFCTalbot, Taylor, Upson44 min
Aug 26, 9:59 AM EDTTornado WarningFFCLamar22 min
Aug 26, 11:34 AM EDTTornado WarningFFCCrawford, Monroe41 min
Aug 26, 12:04 PM EDTTornado WarningFFCJasper, Jones41 min
Aug 26, 12:28 PM EDTTornado WarningFFCCrisp47 min
Aug 26, 12:40 PM EDTFlash Flood WarningFFCLumpkin, White6 hr
Aug 26, 12:40 PM EDTTornado WarningFFCJasper, Morgan, Putnam50 min
Aug 26, 1:16 PM EDTTornado WarningFFCOconee, Walton29 min
Aug 26, 1:30 PM EDTSevere Thunderstorm WarningFFCClarke, Jackson, Madison30 min
Aug 26, 1:39 PM EDTFlash Flood WarningFFCTowns6 hr
Aug 26, 2:01 PM EDTTornado WarningFFCClarke, Oconee, Oglethorpe29 min
Aug 26, 3:16 PM EDTFlash Flood WarningFFCNewton, Rockdale6 hr
Aug 26, 3:28 PM EDTRiver Flood WarningFFCForsyth, Fulton6 hr
Aug 26, 3:49 PM EDTTornado WarningFFCHall, White41 min
Aug 26, 4:08 PM EDTTornado WarningFFCBarrow, Jackson37 min
Aug 26, 4:10 PM EDTTornado WarningFFCDooly, Houston, Macon, Peach50 min
Aug 26, 4:36 PM EDTTornado WarningFFCBanks, Jackson24 min
Aug 26, 4:55 PM EDTTornado WarningFFCGreene, Oglethorpe50 min
Aug 26, 6:02 PM EDTTornado WarningFFCGreene, Oglethorpe, Taliaferro, Wilkes58 min
Aug 26, 6:08 PM EDTTornado WarningFFCBanks, Hall37 min
Aug 26, 6:24 PM EDTTornado WarningFFCBaldwin, Jones38 min
Aug 26, 6:41 PM EDTFlash Flood WarningFFCLumpkin, White6 hr
Aug 26, 7:00 PM EDTTornado WarningFFCWilkes15 min
Aug 26, 7:15 PM EDTAreal Flood WarningFFCHall6 hr
Aug 26, 7:31 PM EDTTornado WarningFFCHancock, Taliaferro, Warren44 min

Nearby

Flash Flood Warnings in Georgia, 2008Every 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; radar from the NEXRAD Level II archive.