Alert archive / Georgia / Flash Flood Warnings in 2007

Flash Flood Warning 2, NWS Atlanta, GA

June 28, 2007Lumpkin County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jun 28, 2007, 11:23 PM EDT for Lumpkin County, Georgia. It took effect at Jun 28, 2007, 11:28 PM EDT. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 28, 2007, 11:23 PM EDT (03:23 UTC)
In effect from
Jun 28, 2007, 11:28 PM EDT
Expired
Jun 29, 2007, 2:30 AM EDT
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Whole counties

County Lumpkin County, GA

The radar

The Atlanta radar (KFFC), 144 km from the middle of the area, began a volume at 03:23 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, 3.4 hours before the alert went out and 141 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 2007-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 909 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 00:00Z on 2007-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 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
909 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1871 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
32 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 290328
FFWFFC
GAC187-290630-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1123 PM EDT THU JUN 28 2007

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 230 AM EDT

* AT 1119 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PORTER
  SPRINGS.

ACCORDING TO DOPPLER RADAR...THUNDERSTORMS HAVE DROPPED MORE THAN 3 
INCHES OF RAIN IN PORTIONS OF LUMPKIN COUNTY SINCE 9 PM. THIS MUCH 
RAIN IN SUCH A SHORT PERIOD OF TIME IS LIKELY TO PRODUCE RAPID RISES 
ON CREEKS AND STREAMS. AREAS THAT APPEAR TO HAVE RECEIVED THE MOST 
RAIN ARE EXTEND FROM THE PORTER SPRINGS AREA IN THE NORTH TO WEST OF 
AURARIA IN THE SOUTH...INCLUDING MOOSE CREEK AND LITTLE CANE CREEK.
PEOPLE LOCATED NEAR ANY STREAM OR CREEK NEAR THE MENTIONED AREAS 
SHOULD CHECK WATER LEVELS AND MOVE TO A PLACE OF SAFETY IMMEDIATELY 
IF THREATENED BY RISING WATER. 

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 3451 8415 3444 8401 3471 8385 3464 8406

$$
2 follow-up statements
000 
WGUS72 KFFC 290412
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1210 AM EDT FRI JUN 29 2007

GAC187-290630-
LUMPKIN GA-
1210 AM EDT FRI JUN 29 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM EDT FOR
LUMPKIN COUNTY...

AT 1205 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED 
RAINFALL TAPERING OFF ACROSS LUMPKIN COUNTY. HOWEVER...CREEKS AND 
STREAMS MAY STILL BE OUT OF THEIR BANKS DUE TO THE HEAVY RAIN 
RECEIVED EARLIER TONIGHT. 

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 3451 8415 3444 8401 3471 8385 3464 8406

$$
000 
WGUS72 KFFC 290516
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
113 AM EDT FRI JUN 29 2007

GAC187-290630-
LUMPKIN GA-
113 AM EDT FRI JUN 29 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM EDT FOR
LUMPKIN COUNTY...

AT 111 AM EDT...SHOWERS AND THUNDERSTORMS HAD WEAKENED ACROSS 
NORTHEAST GEORGIA INCLUDING LUMPKIN COUNTY. RAINFALL IS MAINLY 
CONFINED TO AREAS EAST OF A PORTER SPRINGS TO DAHLONEGA TO AURARIA 
LINE. THE RAIN WILL CONTINUE TO WEAKEN AND DISSIPATE EARLY THIS 
MORNING...HOWEVER ADDITIONAL RAINFALL AMOUNTS OF ONE TENTH TO ONE 
QUARTER INCH ARE POSSIBLE IN THE WARNED AREA. SMALL CREEKS AND 
STREAMS WILL CONTINUE AT HIGH LEVELS THROUGH 230 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.

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 3451 8415 3444 8401 3471 8385 3464 8406

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 11:03 PM EDTFlash Flood WarningFFCHall3 hr
Jun 29, 2:23 PM EDTSevere Thunderstorm WarningFFCLamar37 min
Jun 29, 2:40 PM EDTSevere Thunderstorm WarningFFCTaliaferro, Warren35 min
Jun 29, 2:46 PM EDTSevere Thunderstorm WarningFFCJasper44 min
Jun 29, 2:50 PM EDTSevere Thunderstorm WarningFFCUpson25 min
Jun 29, 3:00 PM EDTSevere Thunderstorm WarningFFCTalbot30 min
Jun 29, 3:14 PM EDTSevere Thunderstorm WarningFFCWarren46 min
Jun 29, 3:30 PM EDTSevere Thunderstorm WarningFFCMacon30 min
Jun 29, 3:56 PM EDTSevere Thunderstorm WarningFFCJones34 min
Jun 29, 4:00 PM EDTSevere Thunderstorm WarningFFCBaldwin, Hancock30 min
Jun 29, 4:43 PM EDTSevere Thunderstorm WarningFFCCoweta32 min
Jun 29, 4:48 PM EDTSevere Thunderstorm WarningFFCWashington, Wilkinson27 min
Jun 29, 4:50 PM EDTSevere Thunderstorm WarningFFCCarroll25 min
Jun 29, 5:03 PM EDTSevere Thunderstorm WarningFFCHeard27 min
Jun 29, 5:07 PM EDTSevere Thunderstorm WarningFFCJohnson, Laurens23 min
Jun 29, 5:08 PM EDTSevere Thunderstorm WarningFFCCarroll37 min
Jun 29, 5:14 PM EDTSevere Thunderstorm WarningFFCCoweta31 min
Jun 29, 5:18 PM EDTSevere Thunderstorm WarningFFCHarris, Troup27 min
Jun 29, 6:09 PM EDTSevere Thunderstorm WarningFFCFayette, Fulton36 min
Jun 29, 7:05 PM EDTSevere Thunderstorm WarningFFCCobb25 min
Jun 29, 7:39 PM EDTSevere Thunderstorm WarningFFCCobb51 min

Nearby

Flash Flood Warnings in Georgia, 2007Every flash flood warning in 2007

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.