Alert archive / Georgia / Areal Flood Warnings in 2013

Areal Flood Warning 17, NWS Atlanta, GA

July 6, 2013Floyd County, Polk County, Georgia

NWS Atlanta, GA issued this areal flood warning at Jul 6, 2013, 10:28 PM EDT for Floyd County, Polk 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 counties it named.

The facts

Issued: Jul 6, 2013, 10:28 PM EDT (02:28 UTC)
Expired: Jul 7, 2013, 1:30 AM EDT
In force: 3 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

Counties Floyd County, GA, Polk County, GA

The radar

The Atlanta radar (KFFC), 104 km from the middle of the area, began a volume at 02:31 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

Nashville Metro, TN (KBNA), launched 00:00Z, 2.5 hours before the alert went out and 256 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: 115 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this areal flood warning went out at Jul 6, 9:27 PM EDT, 1 hour 1 minute earlier.

Area forecast discussion, Jul 6, 9:27 PM EDT, 1 hour 1 minute before

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Hazardous weather outlook, Jul 6, 12:13 PM EDT, 10 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1213 PM EDT SAT JUL 6 2013

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-071615-
BALDWIN-BANKS-BARROW-BARTOW-BIBB-BLECKLEY-BUTTS-CARROLL-CATOOSA-
CHATTAHOOCHEE-CHATTOOGA-CHEROKEE-CLARKE-CLAYTON-COBB-COWETA-
CRAWFORD-CRISP-DADE-DAWSON-DEKALB-DODGE-DOOLY-DOUGLAS-EMANUEL-
FANNIN-FAYETTE-FLOYD-FORSYTH-GILMER-GLASCOCK-GORDON-GREENE-
GWINNETT-HALL-HANCOCK-HARALSON-HARRIS-HEARD-HENRY-HOUSTON-JACKSON-
JASPER-JEFFERSON-JOHNSON-JONES-LAMAR-LAURENS-LUMPKIN-MACON-
MADISON-MARION-MERIWETHER-MONROE-MONTGOMERY-MORGAN-MURRAY-
MUSCOGEE-NEWTON-NORTH FULTON-OCONEE-OGLETHORPE-PAULDING-PEACH-
PICKENS-PIKE-POLK-PULASKI-PUTNAM-ROCKDALE-SCHLEY-SOUTH FULTON-
SPALDING-STEWART-SUMTER-TALBOT-TALIAFERRO-TAYLOR-TELFAIR-TOOMBS-
TOWNS-TREUTLEN-TROUP-TWIGGS-UNION-UPSON-WALKER-WALTON-WARREN-
WASHINGTON-WEBSTER-WHEELER-WHITE-WHITFIELD-WILCOX-WILKES-
WILKINSON-
1213 PM EDT SAT JUL 6 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH AND CENTRAL GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

SIGNIFICANT MOISTURE CONTINUES ACROSS THE STATE WITH SHOWERS AND
ISOLATED THUNDERSTORMS EXPECTED AGAIN TODAY. THE GROUND ACROSS THE
AREA IS SATURATED AND ADDITIONAL HEAVY RAIN CAN LEAD TO FLOODING
OR FLASH FLOODING. THE HIGHEST RAINFALL TOTALS THROUGH TONIGHT ARE
EXPECTED TO BE GENERALLY ACROSS NORTHERN SECTIONS OF THE FORECAST
AREA. RESIDENTS ARE URGED NOT TO LET THEIR GUARD DOWN DURING THIS
PERIOD OF PROLONGED RAINFALL.

WEATHER HAZARDS EXPECTED...

PERIODS OF MODERATE TO HEAVY RAINFALL ESPECIALLY THIS AFTERNOON
AND EVENING MAY LEAD TO ADDITIONAL FLASH FLOODING AND RIVER
FLOODING. RAINFALL AMOUNTS AVERAGING BETWEEN 1 AND 2 INCHES CAN BE
EXPECTED GENERALLY NORTH OF ATLANTA...WITH AT LEAST A HALF INCH
EXPECTED NORTH AND WEST OF A CORDELE TO DUBLIN LINE.

THUNDERSTORMS WILL PRODUCE OCCASIONAL LIGHTNING AND WIND GUSTS TO
40 MPH OR GREATER. WITH SATURATED SOILS...IT WILL NOT TAKE MUCH
WIND TO DOWN TREES.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

HEAVY RAINFALL IS EXPECTED AGAIN ON SUNDAY ESPECIALLY ACROSS
NORTH GEORGIA WITH AN ADDITIONAL 1 TO 2 INCHES OF RAIN
EXPECTED...WITH SOME AREAS IN THE MOUNTAINS BETWEEN 2 AND 3
INCHES. THIS MAY LEAD TO ADDITIONAL FLOODING PROBLEMS ESPECIALLY
IN THE MOUNTAINS. AFTER SUNDAY...ALTHOUGH THE RAINFALL MAY NOT BE
AS WIDESPREAD...THERE WILL STILL BE PERIODS OF MODERATE TO HEAVY
RAINFALL IN SHOWERS AND THUNDERSTORMS THROUGH EARLY NEXT WEEK.
NORTH GEORGIA LOOKS TO SEE THE BEST CHANCES FOR THIS ADDITIONAL
RAINFALL AND THERE IS SOME CONCERN THAT ACCUMULATING HIGH RAINFALL
TOTALS MAY LEAD TO MORE SIGNIFICANT FLOODING ACROSS THE AREA.
PERSONS PLANNING OUTDOOR ACTIVITIES FOR THE NEXT SEVERAL DAYS
SHOULD MONITOR THE LATEST FORECASTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT REQUESTED BUT SPOTTERS ARE ENCOURAGED
TO SUBMIT REPORTS OF SEVERE WEATHER THROUGH THE WEB BY GOING TO
WEATHER.GOV/ATLANTA.

In the hours before

Special weather statement, Jul 6, 5:24 PM EDT, 5 hours 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
524 PM EDT SAT JUL 6 2013

GAZ042-043-053-062200-
524 PM EDT SAT JUL 6 2013

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN CARROLL...COWETA
AND DOUGLAS COUNTIES UNTIL 600 PM EDT...

AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER PLANT YATES...MOVING NORTH AT 35 MPH.

RAINFALL AMOUNTS BETWEEN 0.50 AND 1.00 INCHES CAN BE EXPECTED ACROSS
PORTIONS OF CARROLL...COWETA AND DOUGLAS COUNTIES...INCLUDING AREAS
AROUND ARNCO-SARGENT...PLANT YATES...MADRAS...DUNAWAY
GARDENS...ROSCOE...NEWNAN...WHITESBURG...BYERS CROSSROADS...SEATON
LAKE...HANNAH...FAIRPLAY...CLEM...BILL ARP...CARROLLTON AND TREASURE
LAKE. DRIVERS SHOULD USE CAUTION AS INTENSE RAINFALL WILL REDUCE
VISIBILITIES. PONDING OF WATER ON ROADWAYS IS ALSO LIKELY.

&&

LAT...LON 3378 8478 3363 8475 3360 8480 3354 8483
      3353 8482 3351 8482 3351 8473 3338 8470
      3333 8491 3367 8518
TIME...MOT...LOC 2124Z 158DEG 30KT 3350 8487

30

Special weather statement, Jul 6, 7:52 PM EDT, 2 hours 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
752 PM EDT SAT JUL 6 2013

GAZ022-023-033-034-045-070030-
752 PM EDT SAT JUL 6 2013

...SIGNIFICANT WEATHER ADVISORY FOR 40 MPH WINDS IN DEKALB...
FORSYTH...GWINNETT...HALL AND FULTON COUNTIES UNTIL 830 PM EDT...

AT 750 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER LILBURN...MOVING NORTH AT 35 MPH CAPABLE OF
PRODUCING 35 TO 40 MPH WINDS. DUE TO SATURATED SOILS...TREES MAY BE
UPROOTED AT THESE WIND SPEEDS.

WIND GUSTS OF 40 MPH ARE LIKELY AS THIS STORM MOVES ACROSS DEKALB...
FORSYTH...GWINNETT...HALL AND FULTON COUNTIES THROUGH 830 PM EDT.
SOME LOCATIONS IN THE PATH OF THE STORM INCLUDE CENTERVILLE...
SNELLVILLE...MECHANICSVILLE...LILBURN...BROOKHAVEN...PINE LAKE...
STONE MOUNTAIN...CLARKSTON...TUCKER...DORAVILLE...CHAMBLEE...
DUNWOODY...CHASTAIN MEMORIAL PARK...MOUNTAIN PARK AND NORCROSS.

&&

LAT...LON 3421 8379 3375 8402 3372 8406 3387 8440
      3419 8428 3419 8426 3425 8426 3433 8423
TIME...MOT...LOC 2351Z 199DEG 28KT 3389 8415

30

Local storm report, Jul 6, 8:00 PM EDT, 2 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
800 PM EDT SAT JUL 06 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0759 PM     FLASH FLOOD      2 NNE SENEY             34.12N 85.11W
07/06/2013                   FLOYD              GA   EMERGENCY MNGR

            DARYL ROAD CLOSED DUE TO HIGH WATER

&&

30

Local storm report, Jul 6, 8:58 PM EDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
858 PM EDT SAT JUL 06 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0835 PM     FLASH FLOOD      CAVE SPRING             34.11N 85.34W
07/06/2013                   FLOYD              GA   EMERGENCY MNGR

            LITTLE CEDAR CREEK OUT OF ITS BANKS IN TOWN. ROLATER PARK
            EXPERIENCING MINOR FLOODING.

&&

30

Local storm report, Jul 6, 9:04 PM EDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
904 PM EDT SAT JUL 06 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0843 PM     FLASH FLOOD      5 NNE CEDARTOWN         34.07N 85.22W
07/06/2013                   POLK               GA   PUBLIC

            MODERATE FLOODING OF LAKE CREEK ALONG LAKE CREEK ROAD.

&&

30

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 10:48 PM EDT	Special Weather Statement	FFC	Madison, Oglethorpe	42 min
Jul 7, 12:16 AM EDT	River Flood Warning	FFC	Whitfield	4 days
Jul 7, 3:42 AM EDT	River Flood Warning	FFC	Murray, Whitfield	37 hr
Jul 7, 3:42 AM EDT	River Flood Warning	FFC	Gordon, Murray, Whitfield	28 hr
Jul 7, 4:07 AM EDT	River Flood Warning	FFC	Elbert, Madison, Oglethorpe	3 hr
Jul 7, 5:30 AM EDT	River Flood Warning	FFC	Dade	10 hr
Jul 7, 6:01 AM EDT	River Flood Warning	FFC	Bibb, Houston, Jones, Monroe, Twiggs	16 hr
Jul 7, 2:19 PM EDT	River Flood Warning	FFC	Clarke, Greene, Oconee	22 hr
Jul 7, 4:10 PM EDT	Special Weather Statement	FFC	Harris, Muscogee	35 min
Jul 7, 4:48 PM EDT	Special Weather Statement	FFC	Catoosa, Dade, Walker	42 min
Jul 7, 5:39 PM EDT	Special Weather Statement	FFC	Catoosa, Walker	51 min
Jul 7, 5:59 PM EDT	Special Weather Statement	FFC	Whitfield	61 min
Jul 7, 6:10 PM EDT	Special Weather Statement	FFC	Dooly	50 min
Jul 7, 6:52 PM EDT	Special Weather Statement	FFC	Chattahoochee, Marion, Schley, Stewart, Webster	53 min
Jul 7, 6:57 PM EDT	Special Weather Statement	FFC	Murray, Walker, Whitfield	63 min
Jul 7, 7:10 PM EDT	River Flood Warning	FFC	Floyd	17 hr
Jul 7, 7:16 PM EDT	Special Weather Statement	FFC	Macon	44 min
Jul 7, 7:35 PM EDT	Flash Flood Warning	FFC	Catoosa, Murray, Walker, Whitfield	6 hr

Nearby

Areal Flood Warnings in Georgia, 2013 Every areal 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.