Alert archive / Georgia / Flash Flood Warnings in 2008

Flash Flood Warning 5, NWS Atlanta, GA

June 16, 2008Crawford County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jun 16, 2008, 12:47 AM EDT for Crawford County, Georgia. It was in force for 5 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 16, 2008, 12:47 AM EDT (04:47 UTC)
Expired
Jun 16, 2008, 5:39 AM EDT
In force
5 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Crawford County, GA

The radar

The Robins AFB radar (KJGX), 48 km from the middle of the area, began a volume at 04:50 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, 4.8 hours before the alert went out and 93 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 2008-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 96 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 00:00Z on 2008-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
96 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
2268 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
-5 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 160449
FFWFFC
GAC079-161045-
/O.NEW.KFFC.FF.W.0005.080616T0447Z-080616T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1247 AM EDT MON JUN 16 2008

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CRAWFORD COUNTY IN CENTRAL GEORGIA

* UNTIL 645 AM EDT

* AT 1242 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
BETWEEN 4 AND 5 INCHES OF RAIN OVER THE PAST 3 HOURS OVER NORTHEAST 
CRAWFORD COUNTY OVER THE DEEP CREEK AREA.

* THE HEAVY RAIN WILL LIKELY CONTINUE FOR THE NEXT 1 TO 2 HOURS 
PRODUCING ANOTHER 1 INCH OF RAIN OVER THE SAME AREA.

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 3280 8388 3273 8382 3269 8376 3262 8386
      3275 8396
TIME...MOT...LOC 0447Z 180DEG 0KT 3274 8387

$$
2 follow-up statements
000 
WGUS72 KFFC 160818
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
415 AM EDT MON JUN 16 2008

GAC079-161045-
/O.CON.KFFC.FF.W.0005.000000T0000Z-080616T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD GA-
415 AM EDT MON JUN 16 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM EDT FOR
CRAWFORD COUNTY...

ALTHOUGH THE HEAVY RAIN HAS ENDED IN CRAWFORD COUNTY...THE RUNOFF 
FROM THE HEAVY RAIN EARLIER COULD STILL BE PRODUCING 
FLOODING...MAINLY ALONG DEEP CREEK IN NORTHEAST CRAWFORD COUNTY. 
THEREFORE A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM.

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.

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.

LAT...LON 3280 8388 3273 8382 3269 8376 3262 8386
      3275 8396
TIME...MOT...LOC 0815Z 180DEG 0KT 3274 8387

$$
000 
WGUS72 KFFC 160939
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
539 AM EDT MON JUN 16 2008

GAC079-160949-
/O.CAN.KFFC.FF.W.0005.000000T0000Z-080616T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD GA-
539 AM EDT MON JUN 16 2008

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

THE THREAT OF FLASH FLOODING IN THE DEEP CREEK AREA HAS DIMINISHED 
AND THEREFORE THE FLASH FLOOD WARNING HAS BEEN 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.

LAT...LON 3280 8388 3273 8382 3269 8376 3262 8386
      3275 8396
TIME...MOT...LOC 0939Z 180DEG 0KT 3274 8387

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 8:46 PM EDTSevere Thunderstorm WarningFFCHancock44 min
Jun 15, 9:11 PM EDTSevere Thunderstorm WarningFFCLaurens49 min
Jun 15, 9:55 PM EDTSevere Thunderstorm WarningFFCHancock, Warren50 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.