Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 36, NWS Atlanta, GA

July 3, 2013Wilkes County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jul 3, 2013, 4:28 PM EDT for Wilkes 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 3, 2013, 4:28 PM EDT (20:28 UTC)
Expired: Jul 3, 2013, 10:30 PM EDT
In force: 6 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

County Wilkes County, GA

The radar

The Greer radar (KGSP), 133 km from the middle of the area, began a volume at 20:30 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, 8.5 hours before the alert went out and 172 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1032 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 511 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

159 
WGUS52 KFFC 032028
FFWFFC
GAC317-040230-
/O.NEW.KFFC.FF.W.0036.130703T2028Z-130704T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
428 PM EDT WED JUL 3 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WILKES COUNTY IN EAST CENTRAL GEORGIA

* UNTIL 1030 PM EDT

* AT 423 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A SERIES OF THUNDERSTORM OVER THE WARNED AREA.
  BETWEEN 3 AND 4 INCHES OF RAIN HAVE FALLEN...WITH ADDITIONAL
  RAINFALL OF 1 TO 3 INCHES EXPECTED OVER THE NEXT SEVERAL HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WASHINGTON...NEWTOWN...TIGNALL AND RAYLE. EXPECT RAPID RISES ALONG
  THE LITTLE BEAVERDAM CREEK...ARMSTRONG BRANCH...GREENSBORO
  BRANCH...AND CLARK CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...AS WELL AS HIGHWAYS AND UNDERPASSES.
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

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 3363 8260 3361 8263 3360 8268 3362 8269
      3362 8275 3366 8282 3362 8288 3378 8299
      3392 8287 3395 8279 3398 8278 3399 8265
      3388 8260 3387 8256 3382 8259 3365 8249

$$

2 follow-up statements

723 
WGUS72 KFFC 032258
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
658 PM EDT WED JUL 3 2013

GAC317-040230-
/O.CON.KFFC.FF.W.0036.000000T0000Z-130704T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILKES GA-
658 PM EDT WED JUL 3 2013

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

AT 654 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE HEAVY RAIN PRODUCING FLASH FLOODING OVER THE WARNED AREA. 3 
TO 5 INCHES OF RAIN HAVE FALLEN OVER THE AREA...WITH AN ADDITIONAL 1 
TO 3 INCHES EXPECTED THROUGH THE EVENING HOURS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
WASHINGTON...NEWTOWN...TIGNALL AND RAYLE. EXPECT CONTINUED HIGH 
WATER AND RAPID RISES ALONG THE LITTLE BEAVERDAM CREEK...ARMSTRONG 
BRANCH...GREENSBORO BRANCH...AND CLARK 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.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

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 3363 8260 3361 8263 3360 8268 3362 8269
      3362 8275 3366 8282 3362 8288 3378 8299
      3392 8287 3395 8279 3398 8278 3399 8265
      3388 8260 3387 8256 3382 8259 3365 8249

$$

603 
WGUS72 KFFC 040222
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1022 PM EDT WED JUL 3 2013

GAC317-040231-
/O.EXP.KFFC.FF.W.0036.000000T0000Z-130704T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILKES GA-
1022 PM EDT WED JUL 3 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1030 PM EDT FOR WILKES
COUNTY...

WIDESPREAD AMOUNTS OF 3 TO 5 INCHES OF RAIN HAVE FALLEN ACROSS 
WILKES COUNTY...ESPECIALLY JUST WEST OF WASHINGTON UP TOWARD NORMAN. 
ADDITIONAL RAINFALL IS EXPECTED OVERNIGHT. RESIDENTS SHOULD REMAIN 
AWARE OF THE WEATHER IN THE AREA IN CASE ADDITIONAL WARNINGS ARE 
NEEDED OVERNIGHT.

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 3363 8260 3361 8263 3360 8268 3362 8269
      3362 8275 3366 8282 3362 8288 3378 8299
      3392 8287 3395 8279 3398 8278 3399 8265
      3388 8260 3387 8256 3382 8259 3365 8249

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 10:30 PM EDT	Special Weather Statement	FFC	Towns	45 min
Jul 2, 10:42 PM EDT	River Flood Warning	FFC	Forsyth, Fulton	63 hr
Jul 2, 11:22 PM EDT	Special Weather Statement	FFC	Murray, Whitfield	68 min
Jul 3, 9:51 AM EDT	Special Weather Statement	FFC	Haralson, Polk	54 min
Jul 3, 10:15 AM EDT	Flash Flood Warning	FFC	Haralson	2 hr
Jul 3, 12:00 PM EDT	Flash Flood Warning	FFC	Coweta, Heard, Troup	3 hr
Jul 3, 12:10 PM EDT	Flash Flood Warning	FFC	Haralson	6 hr
Jul 3, 1:24 PM EDT	Flash Flood Warning	FFC	Carroll, Cherokee, Cobb, Douglas, Fulton	6 hr
Jul 3, 1:46 PM EDT	Special Weather Statement	FFC	Butts, Monroe	29 min
Jul 3, 2:16 PM EDT	Flash Flood Warning	FFC	Cherokee, Dawson, Fannin, Forsyth, Fulton, Gilmer and 3 more	6 hr
Jul 3, 2:17 PM EDT	River Flood Warning	FFC	Forsyth	15 hr
Jul 3, 2:28 PM EDT	River Flood Warning	FFC	Cobb	6 hr
Jul 3, 2:55 PM EDT	Flash Flood Warning	FFC	Coweta, Heard, Meriwether, Troup	6 hr
Jul 3, 4:12 PM EDT	Special Weather Statement	FFC	Telfair	33 min
Jul 3, 4:31 PM EDT	Flash Flood Warning	FFC	Baldwin, Wilkinson	6 hr
Jul 3, 5:31 PM EDT	Flash Flood Warning	FFC	Banks, Dawson, Hall, Lumpkin, Towns, Union and 1 more	6 hr

Nearby

Flash Flood Warnings in Georgia, 2013 Every 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.