Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 29, NWS Atlanta, GA

July 2, 2013Hancock County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jul 2, 2013, 6:22 PM EDT for Hancock 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
Jul 2, 2013, 6:22 PM EDT (22:22 UTC)
Expired
Jul 3, 2013, 12:15 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Hancock County, GA

The radar

The Robins AFB radar (KJGX), 85 km from the middle of the area, began a volume at 22:25 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, 10.4 hours before the alert went out and 150 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 2013-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 667 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 2013-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 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
667 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
462 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

065 
WGUS52 KFFC 022222
FFWFFC
GAC141-030415-
/O.NEW.KFFC.FF.W.0029.130702T2222Z-130703T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
622 PM EDT TUE JUL 2 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN HANCOCK COUNTY IN EAST CENTRAL GEORGIA

* UNTIL 1215 AM EDT

* AT 613 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM THUNDERSTORMS OVER THE WARNED AREA. SOME
  AREAS IN EASTERN HANCOCK COUNTY HAVE RECEIVED AN ESTIMATED 2 TO 3
  INCHES OF RAIN DURING THE PAST HOUR. THE HEAVIEST RAIN HAS BEEN
  OVER PORTIONS OF THE OGEECHEE WILDLIFE MANAGEMENT AREA EAST OF
  HIGHWAY 22 AND NORTH OF HIGHWAY 16.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CULVERTON. 
  RESIDENTS SHOULD EXPECT RAPID RISES ON TRIBUTARIES OF THE OGEECHEE
  RIVER ACROSS EASTERN HANCOCK COUNTY...INCLUDING HUNNON BRANCH...
  FULSOME CREEK...AND BEAVERDAM CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS...STREAMS AND COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.

&&

LAT...LON 3330 8278 3317 8290 3318 8302 3327 8310
      3338 8303 3344 8289 3345 8287 3343 8282
      3339 8283 3336 8280 3333 8280

$$
2 follow-up statements
768 
WGUS72 KFFC 022325
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
725 PM EDT TUE JUL 2 2013

GAC141-030415-
/O.CON.KFFC.FF.W.0029.000000T0000Z-130703T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HANCOCK GA-
725 PM EDT TUE JUL 2 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR
EASTERN HANCOCK COUNTY...

AT 718 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE LIGHT TO MODERATE RAIN OVER THE WARNED AREA. UP TO 4 INCHES 
OF RAIN HAVE FALLEN OVER PORTIONS OF EASTERN HANCOCK COUNTY. THE 
HEAVIEST RAIN FELL IN GENERALLY TWO AREAS. FIRST...EAST OF HIGHWAY 
22 AND NORTH OF HIGHWAY 16 OVER THE OGEECHEE WILDLIFE MANAGEMENT 
AREA. SECOND...JUST SOUTH OF SPARTA BETWEEN HIGHWAYS 15 AND 22.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO POWELTON. 
THE WATER FROM THE FIRST AREA OF HEAVY RAIN WILL RUN OFF INTO THE 
TRIBUTARIES OF THE OGEECHEE RIVER ACROSS EASTERN HANCOCK COUNTY... 
INCLUDING HUNNON BRANCH...FULSOME CREEK...LITTLE OGEECHEE RIVER... 
AND BEAVERDAM CREEK. WITH THE SECOND AREA OF HEAVY RAINFALL...THE 
WATER WILL RUN OFF INTO CREEKS NEAR AND SOUTH OF SPARTA INCLUDING 
TWOMILE CREEK...PINKSTON CREEK...BUFFALO CREEK...AND SANDY RUN CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS...STREAMS AND COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY...THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE 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. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.

&&

LAT...LON 3330 8278 3317 8290 3318 8302 3327 8310
      3338 8303 3344 8289 3345 8287 3343 8282
      3339 8283 3336 8280 3333 8280

$$
947 
WGUS72 KFFC 030119
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
919 PM EDT TUE JUL 2 2013

GAC141-030415-
/O.CON.KFFC.FF.W.0029.000000T0000Z-130703T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HANCOCK GA-
919 PM EDT TUE JUL 2 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR
EASTERN HANCOCK COUNTY...

AT 914 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT UP TO 4 INCHES OF RAIN HAD FALLEN OVER THE WARNED AREA. THE 
HEAVIEST RAIN FELL IN GENERALLY TWO AREAS. FIRST...EAST OF HIGHWAY 
22 AND NORTH OF HIGHWAY 16 OVER THE OGEECHEE WILDLIFE MANAGEMENT 
AREA. SECOND...JUST SOUTH OF SPARTA BETWEEN HIGHWAYS 15 AND 22.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO POWELTON. 
THE WATER FROM THE FIRST AREA OF HEAVY RAIN WILL RUN OFF INTO THE 
TRIBUTARIES OF THE OGEECHEE RIVER ACROSS EASTERN HANCOCK COUNTY... 
INCLUDING HUNNON BRANCH...FULSOME CREEK...LITTLE OGEECHEE RIVER... 
AND BEAVERDAM CREEK. WITH THE SECOND AREA OF HEAVY RAINFALL...THE 
WATER WILL RUN OFF INTO CREEKS NEAR AND SOUTH OF SPARTA INCLUDING 
TWOMILE CREEK...PINKSTON CREEK...BUFFALO CREEK...AND SANDY RUN CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS...STREAMS AND COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.

&&

LAT...LON 3330 8278 3317 8290 3318 8302 3327 8310
      3338 8303 3344 8289 3345 8287 3343 8282
      3339 8283 3336 8280 3333 8280

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 11:28 PM EDTFlash Flood WarningFFCTelfair3 hr
Jul 1, 11:48 PM EDTSpecial Weather StatementFFCCatoosa, Chattooga, Walker57 min
Jul 2, 6:01 PM EDTSpecial Weather StatementFFCHancock, Warren, Washington29 min
Jul 2, 6:39 PM EDTSpecial Weather StatementFFCGlascock, Johnson, Washington21 min
Jul 2, 7:01 PM EDTSpecial Weather StatementFFCWashington29 min

Nearby

Flash Flood Warnings in Georgia, 2013Every flash flood warning in 2013

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.