Alert archive / Georgia / Flash Flood Warnings in 2014

Flash Flood Warning 12, NWS Atlanta, GA

June 26, 2014Gilmer County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jun 26, 2014, 4:37 PM EDT for Gilmer 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
Jun 26, 2014, 4:37 PM EDT (20:37 UTC)
Expired
Jun 26, 2014, 10:30 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Gilmer County, GA

The radar

The Atlanta radar (KFFC), 146 km from the middle of the area, began a volume at 20:38 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, 8.6 hours before the alert went out and 145 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 2014-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 733 joules per kilogram.LCLLFCEL10008507005003002001001 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 2014-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
733 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
774 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

553 
WGUS52 KFFC 262037
FFWFFC
GAC123-270230-
/O.NEW.KFFC.FF.W.0012.140626T2037Z-140627T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
437 PM EDT THU JUN 26 2014

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 1030 PM EDT

* AT 430 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  UP TO TWO INCHES OF RAIN HAS FALLEN OVER THE AREA IN THE LAST      
  HOUR. FLASH FLOODING COULD BE OCCURRING OR WILL OCCUR SOON.        
  ADDITIONAL 1 TO 2 INCHES OF RAIN ARE POSSIBLE DURING THE NEXT FEW  
  HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CHERRY     
  LOG....ELLIJAY...AND CARTECAY.  SOME CREEKS INCLUDED IN THIS       
  WARNING BUT ARE NOT LIMITED TO..COX CREEK...ROLSTON CREEK...AND    
  MOUNTAINTOWN CREEK.

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.

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...DO NOT DROWN.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

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 3484 8438 3480 8431 3473 8426 3467 8425
      3463 8419 3460 8425 3457 8426 3458 8433
      3455 8437 3455 8446 3456 8449 3455 8448
      3478 8464 3482 8458 3485 8461

$$
2 follow-up statements
935 
WGUS72 KFFC 262238
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
638 PM EDT THU JUN 26 2014

GAC123-270230-
/O.CON.KFFC.FF.W.0012.000000T0000Z-140627T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILMER GA-
638 PM EDT THU JUN 26 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT FOR
GILMER COUNTY...

AT 625 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT 1.5 TO 2 INCHES OF RAIN FELL IN THE MOUNTAINTOWN CREEK BASIN 
FROM ROOSEVELT TO LAW GROUNDS. ANOTHER AREA OF RAIN OF ABOUT 2.5 
INCHES OCCURRED IN BETWEEN EAST ELLIJAY TO CARTECAY. LOCATIONS IN 
THE WARNING INCLUDE BUT ARE NOT LIMITED TO EAST ELLIJAY AND ELLIJAY

RIVER GAUGES INDICATE THAT CREEKS ARE ON THE RISE.  IF YOU OBSERVE 
FLOODING...MOVE TO HIGHER GROUND.

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.

IN HILLY TERRAIN THERE ARE LOW WATER CROSSINGS WHICH ARE POTENTIALLY
DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED
ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF SWIFTLY
FLOWING WATER TO CARRY VEHICLES AWAY.

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 3484 8438 3480 8431 3473 8426 3467 8425
      3463 8419 3460 8425 3457 8426 3458 8433
      3455 8437 3455 8446 3456 8449 3455 8448
      3478 8464 3482 8458 3485 8461

$$
285 
WGUS72 KFFC 262352
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
752 PM EDT THU JUN 26 2014

GAC123-262356-
/O.CAN.KFFC.FF.W.0012.000000T0000Z-140627T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILMER GA-
752 PM EDT THU JUN 26 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR GILMER COUNTY...

THE THREAT OF FLASH FLOODING HAS DIMINISHED ACROSS GILMER COUNTY.

AT 740 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT 1.5 TO 2 INCHES OF RAIN FELL IN THE MOUNTAINTOWN CREEK BASIN 
FROM ROOSEVELT TO LAW GROUNDS. ANOTHER AREA OF RAIN OF AROUND  
2.5 INCHES OCCURRED IN BETWEEN EAST ELLIJAY AND CARTECAY.

SMALL CREEKS IN THE HEAVY RAIN AREAS ROSE A FEW FEET EARLIER...BUT 
HAVE SINCE RECEDED. THE LARGER RIVERS SUCH AS THE CARTECAY RIVER AND 
COOSAWATTEE RIVER HAVE RISEN ONLY AROUND ONE FOOT. CONSEQUENTLY...
THE FLASH FLOOD WARNING WILL BE CANCELLED.

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 3484 8438 3480 8431 3473 8426 3467 8425
      3463 8419 3460 8425 3457 8426 3458 8433
      3455 8437 3455 8446 3456 8449 3455 8448
      3478 8464 3482 8458 3485 8461

$$





16

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 4:10 PM EDTSpecial Weather StatementFFCMontgomery50 min
Jun 26, 4:25 PM EDTSpecial Weather StatementFFCGilmer80 min
Jun 26, 4:46 PM EDTSpecial Weather StatementFFCClayton, Cobb, DeKalb, Fulton, Rockdale89 min
Jun 26, 5:54 PM EDTSpecial Weather StatementFFCWilkinson36 min
Jun 26, 5:56 PM EDTSpecial Weather StatementFFCJefferson49 min

Nearby

Flash Flood Warnings in Georgia, 2014Every flash flood warning in 2014

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.