Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 21, NWS Atlanta, GA

June 7, 2013Johnson County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jun 7, 2013, 3:09 AM EDT for Johnson County, Georgia. It was in force for 6 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 7, 2013, 3:09 AM EDT (07:09 UTC)
Expired
Jun 7, 2013, 9:15 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Johnson County, GA

The radar

The Robins AFB radar (KJGX), 69 km from the middle of the area, began a volume at 07:12 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.

What was reported inside it

TimeReportWhereRemark
Jun 7, 4:00 AM EDTFLASH FLOOD2 Ene New Home, GAHURRICANE BRANCH OVERFLOWED A PORTION OF OAKY GROVE CHURCH ROAD WITH AROUND ONE FOOT OF WATER.
Jun 7, 4:00 AM EDTFLASH FLOOD5 Ene Wrightsville, GACYPRESS CREEK OVERFLOWED A PORTION OF POWERLINE ROAD WITH AROUND ONE FOOT OF WATER.
Jun 7, 4:00 AM EDTFLASH FLOOD6 Ese Spann, GAA DRAINAGE BRANCH OVERFLOWED A PORTION OF CARTERS ROAD NEAR GEORGIA HIGHWAY 15 WITH AROUND ONE FOOT OF WATER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 7.2 hours before the alert went out and 192 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 2013-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 439 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 2013-06-07The 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
439 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
632 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
18 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.

380 
WGUS52 KFFC 070709
FFWFFC
GAC167-071315-
/O.NEW.KFFC.FF.W.0021.130607T0709Z-130607T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
309 AM EDT FRI JUN 7 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 915 AM EDT

* AT 306 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM STATIONARY HEAVY SHOWERS OVER THE WARNED AREA.

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

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.

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 3272 8245 3269 8250 3265 8247 3264 8251
      3258 8260 3253 8258 3252 8267 3261 8267
      3266 8280 3268 8279 3270 8281 3280 8279
      3277 8276 3282 8252 3276 8244

$$
2 follow-up statements
947 
WGUS72 KFFC 070905
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
505 AM EDT FRI JUN 7 2013

GAC167-071315-
/O.CON.KFFC.FF.W.0021.000000T0000Z-130607T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JOHNSON GA-
505 AM EDT FRI JUN 7 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM EDT FOR
JOHNSON COUNTY...

AT 500 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE MODERATE TO LOCALLY HEAVY SHOWERS PRODUCING FLASH FLOODING 
OVER THE WARNED AREA. 5 TO 6 INCHES OF RAIN HAVE OCCURRED OVER 
PORTIONS OF THE WARNED AREA OVERNIGHT.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WRIGHTSVILLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO 
CROSS WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER 
TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO 
ESCAPE RISING WATER MOVE UP 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 3272 8245 3269 8250 3265 8247 3264 8251
      3258 8260 3253 8258 3252 8267 3261 8267
      3266 8280 3268 8279 3270 8281 3280 8279
      3277 8276 3282 8252 3276 8244

$$
665 
WGUS72 KFFC 071125
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
725 AM EDT FRI JUN 7 2013

GAC167-071133-
/O.CAN.KFFC.FF.W.0021.000000T0000Z-130607T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JOHNSON GA-
725 AM EDT FRI JUN 7 2013

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

THE RAIN HAS ENDED. HOWEVER...3 TO 6 INCHES OF RAIN FELL OVER THE 
WARNED AREA 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 3272 8245 3269 8250 3265 8247 3264 8251
      3258 8260 3253 8258 3252 8267 3261 8267
      3266 8280 3268 8279 3270 8281 3280 8279
      3277 8276 3282 8252 3276 8244

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 12:51 AM EDTSpecial Weather StatementFFCEmanuel84 min
Jun 7, 2:01 AM EDTSpecial Weather StatementFFCGlascock, Jefferson, Johnson, Warren, Washington119 min
Jun 7, 2:17 AM EDTSpecial Weather StatementFFCGlascock, Jefferson, Johnson, Warren, Washington103 min
Jun 7, 3:17 AM EDTFlash Flood WarningFFCWashington6 hr
Jun 7, 3:57 AM EDTSpecial Weather StatementFFCGlascock, Hancock, Jefferson, Taliaferro, Warren2 hr
Jun 7, 4:08 AM EDTFlash Flood WarningFFCGlascock, Jefferson, Warren6 hr
Jun 7, 3:21 PM EDTSpecial Weather StatementFFCFloyd39 min
Jun 7, 3:37 PM EDTSpecial Weather StatementFFCBartow23 min
Jun 7, 3:55 PM EDTSpecial Weather StatementFFCMorgan, Newton50 min
Jun 7, 4:02 PM EDTSpecial Weather StatementFFCBartow, Gordon28 min
Jun 7, 4:27 PM EDTSpecial Weather StatementFFCMurray33 min
Jun 7, 4:35 PM EDTSevere Thunderstorm WarningFFCCobb, Fulton40 min
Jun 7, 4:42 PM EDTFlash Flood WarningFFCMurray, Whitfield3 hr
Jun 7, 5:20 PM EDTSpecial Weather StatementFFCDeKalb, Gwinnett25 min
Jun 7, 5:31 PM EDTSpecial Weather StatementFFCClayton29 min
Jun 7, 5:51 PM EDTSpecial Weather StatementFFCBarrow, Walton24 min
Jun 7, 5:55 PM EDTSevere Thunderstorm WarningFFCHarris, Muscogee, Talbot50 min
Jun 7, 6:35 PM EDTSpecial Weather StatementFFCDodge25 min
Jun 7, 6:49 PM EDTSevere Thunderstorm WarningFFCDodge, Laurens26 min
Jun 7, 6:53 PM EDTSpecial Weather StatementFFCJasper, Putnam37 min
Jun 7, 7:17 PM EDTSevere Thunderstorm WarningFFCDodge, Laurens43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.