Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 102, NWS Atlanta, GA

December 9, 2013Gilmer County, Georgia

NWS Atlanta, GA issued this flash flood warning at Dec 9, 2013, 9:56 AM EST for Gilmer County, Georgia. It was in force for 4 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
Dec 9, 2013, 9:56 AM EST (14:56 UTC)
Expired
Dec 9, 2013, 1:45 PM EST
In force
4 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Gilmer County, GA

The radar

The Atlanta radar (KFFC), 136 km from the middle of the area, began a volume at 14:58 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, 2.9 hours before the alert went out and 134 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 2013-12-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2013-12-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 517 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
434 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
517 m²/s²
0-3 km storm-relative helicity
524 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 091456
FFWFFC
GAC123-091845-
/O.NEW.KFFC.FF.W.0102.131209T1456Z-131209T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
956 AM EST MON DEC 9 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN GILMER COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 145 PM EST

* AT 944 AM EST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
  FLOODING OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
  TALONA...CARTECAY...EAST ELLIJAY AND ELLIJAY. CLEAR CREEK...
  TURKEY CREEK...PRICE CREEK...FAUSETT CREEK AND TOWN CREEK ARE 
  LIKELY TO BE NEAR OR OVER BANKFULL FOR THE NEXT FEW HOURS. THE 
  COUNTY EMERGENCY MANAGER REPORTS WHITE OAK DRIVE IS BLOCKED BY 
  HIGH WATER ON CLEAR CREEK AT THIS TIME.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS...STREAMS AND COUNTRY ROADS...AS WELL AS FARMLANDS AND 
WOODLANDS 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 3457 8425 3458 8433 3455 8437 3455 8442
      3456 8443 3455 8446 3456 8448 3455 8449
      3456 8450 3455 8452 3455 8465 3468 8465
      3471 8433

$$
1 follow-up statement
000 
WGUS72 KFFC 091841
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
141 PM EST MON DEC 9 2013

GAC123-091850-
/O.EXP.KFFC.FF.W.0102.000000T0000Z-131209T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILMER GA-
141 PM EST MON DEC 9 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 145 PM EST FOR SOUTHERN
GILMER COUNTY...

THE HEAVY RAIN ENDED SEVERAL HOURS AGO AND WATER LEVELS ON LOCAL 
RIVERS AND STREAMS WILL CONTINUE TO FALL. 

IF YOU SAW 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 3457 8425 3458 8433 3455 8437 3455 8442
      3456 8443 3455 8446 3456 8448 3455 8449
      3456 8450 3455 8452 3455 8465 3468 8465
      3471 8433

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 9, 6:05 AM ESTRiver Flood WarningFFCForsyth24 hr
Dec 9, 12:12 PM ESTRiver Flood WarningFFCForsyth, Fulton38 hr

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.