Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 39, NWS Atlanta, GA

July 3, 2013Union County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jul 3, 2013, 8:12 PM EDT for Union County, Georgia. 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 outline as issued.

The facts

Issued
Jul 3, 2013, 8:12 PM EDT (00:12 UTC)
Expired
Jul 3, 2013, 11:30 PM EDT
In force
3 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Union County, GA

The radar

The Knoxville radar (KMRX), 161 km from the middle of the area, began a volume at 00:11 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, 0.2 hours before the alert went out and 167 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 2013-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 613 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 2013-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 square meters per square second.193958Sfc1 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
613 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
500 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.5

Open this sounding in Storm Lab

The text

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

651 
WGUS52 KFFC 040012
FFWFFC
GAC291-040330-
/O.NEW.KFFC.FF.W.0039.130704T0012Z-130704T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN UNION COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 1130 PM EDT

* AT 803 PM EDT...BETWEEN 3 AND 5 INCHES OF RAIN HAVE FALLEN ACROSS
  UNION COUNTY...WITH ISOLATED HIGHER AMOUNTS IN THE HIGHER TERRAIN.
  AREAS NEAR SUCHES ESPECIALLY CONTINUE TO EXPERIENCE EFFECTS FROM
  FLASH FLOODING. ALTHOUGH THE RAIN HAS TAPERED OFF...ADDITIONAL
  HEAVY RAINFALL IS EXPECTED THROUGH THE LATE EVENING AND OVERNIGHT
  HOURS. ADDITIONAL WARNINGS MAY BE NECESSARY LATER OVERNIGHT.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BLAIRSVILLE AND SUCHES. THE UNION COUNTY EMERGENCY MANAGER
  REPORTED THAT NUMEROUS ROADS CLOSED...BRIDGES ON SECONDARY ROADS
  UNDERWATER...AND WATER UP TO THE FOUNDATION OF SOME HOUSES...
  MAINLY IN THE SUCHES AREA. UNION COUNTY EMERGENCY MANAGEMENT IS
  MONITORING THE SITUATION AND IF IT GETS WORSE...THEY WILL MAKE
  EVERY EFFORT TO RESPOND TO ANY EMERGENCY CALL MADE TO THEM. THIS
  IS A DANGEROUS SITUATION IN THE NORTH GEORGIA MOUNTAINS! TAKE
  APPROPRIATE ACTIONS TO SAVE LIFE AND PROPERTY!

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 ONLY TAKES 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 3499 8394 3494 8392 3472 8397 3464 8404
      3466 8407 3465 8415 3473 8410 3480 8410
      3481 8414 3485 8414 3489 8411 3495 8418
      3499 8413

$$
1 follow-up statement
435 
WGUS72 KFFC 040324
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1124 PM EDT WED JUL 3 2013

GAC291-040333-
/O.EXP.KFFC.FF.W.0039.000000T0000Z-130704T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
UNION GA-
1124 PM EDT WED JUL 3 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1130 PM EDT FOR WESTERN
UNION COUNTY...

ANYWHERE FROM 3 TO 6 INCHES OF RAIN HAVE FALLEN ACROSS UNION 
COUNTY...WITH SIGNIFICANT IMPACTS ESPECIALLY IN THE SUCHES AREA 
EARLIER THIS EVENING. WHILE THE RAIN HAS SUBSIDED FOR NOW... 
ADDITIONAL RAINFALL IS EXPECTED OVERNIGHT. RESIDENTS SHOULD STAY 
TUNED TO LATEST WEATHER INFORMATION IN CASE ADDITIONAL WARNINGS ARE 
NECESSARY.

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 3499 8394 3494 8392 3472 8397 3464 8404
      3466 8407 3465 8415 3473 8410 3480 8410
      3481 8414 3485 8414 3489 8411 3495 8418
      3499 8413

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 9:30 PM EDTSpecial Weather StatementFFCMacon, Schley, Taylor30 min
Jul 3, 9:33 PM EDTSpecial Weather StatementFFCDodge, Laurens, Wheeler27 min
Jul 3, 9:37 PM EDTSpecial Weather StatementFFCGlascock, Warren23 min
Jul 3, 9:55 PM EDTSpecial Weather StatementFFCMacon, Talbot, Taylor35 min
Jul 3, 9:56 PM EDTSpecial Weather StatementFFCLaurens34 min
Jul 3, 10:00 PM EDTSevere Thunderstorm WarningFFCTalbot, Taylor, Upson30 min
Jul 3, 10:25 PM EDTSevere Thunderstorm WarningFFCMeriwether, Pike, Talbot, Upson50 min
Jul 3, 11:05 PM EDTSpecial Weather StatementFFCCoweta, Meriwether, Pike40 min
Jul 3, 11:10 PM EDTSpecial Weather StatementFFCBaldwin, Greene, Hancock35 min
Jul 4, 1:33 AM EDTRiver Flood WarningFFCDawson, Forsyth4 hr
Jul 4, 9:43 AM EDTRiver Flood WarningFFCCoweta, Fayette, Spalding15 hr
Jul 4, 2:25 PM EDTSpecial Weather StatementFFCHall35 min
Jul 4, 2:40 PM EDTSpecial Weather StatementFFCTaliaferro, Warren35 min
Jul 4, 3:00 PM EDTSpecial Weather StatementFFCTowns, Union, White45 min
Jul 4, 3:11 PM EDTSpecial Weather StatementFFCClarke, Greene, Morgan, Oconee, Putnam49 min
Jul 4, 4:43 PM EDTSpecial Weather StatementFFCJohnson, Treutlen, Washington47 min
Jul 4, 4:49 PM EDTSpecial Weather StatementFFCButts, Clayton, Fayette, Henry, Jasper, Lamar and 3 more41 min
Jul 4, 5:55 PM EDTFlash Flood WarningFFCJohnson, Laurens, Washington4 hr
Jul 4, 6:27 PM EDTSpecial Weather StatementFFCBartow, Cherokee, Forsyth, Gordon, Pickens33 min
Jul 4, 7:16 PM EDTSpecial Weather StatementFFCCatoosa, Whitfield44 min

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.