Alert archive / Georgia / Areal Flood Warnings in 2008

Areal Flood Warning 5, NWS Atlanta, GA

August 26, 2008Hall County, Georgia

NWS Atlanta, GA issued this areal flood warning at Aug 26, 2008, 7:15 PM EDT for Hall 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 counties it named.

The facts

Issued: Aug 26, 2008, 7:15 PM EDT (23:15 UTC)
Expired: Aug 27, 2008, 1:00 AM EDT
In force: 6 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

County Hall County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.3 hours before the alert went out and 123 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: 825 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 459 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 348 m²/s²
0-3 km storm-relative helicity: 373 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 13.3

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 Aug 26, 6:55 PM EDT, 20 minutes earlier.

Area forecast discussion, Aug 26, 6:55 PM EDT, 20 minutes before

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Hazardous weather outlook, Aug 26, 11:00 AM EDT, 8 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1100 AM EDT TUE AUG 26 2008

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-271000-
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-
1100 AM EDT TUE AUG 26 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT
ISOLATED SEVERE THUNDERSTORMS...INCLUDING ISOLATED TORNADOES...ARE
POSSIBLE ACROSS PARTS OF NORTH GEORGIA AND MUCH OF CENTRAL GEORGIA
MAINLY THIS AFTERNOON. FLOODING RAINS ARE ALSO POSSIBLE ACROSS MUCH
OF THE AREA THIS AFTERNOON AND EVENING.

.SYNOPSIS...
THE REMNANTS OF FAY WERE CENTERED OVER NORTH-CENTRAL ALABAMA AT
MIDDAY AND WILL DRIFT NORTHEAST INTO EASTERN TENNESSEE TONIGHT.

.PRIMARY HAZARDS...
THE PRIMARY HAZARD WILL BE SHORT LIVED TORNADOES AND WILL BE MOST
LIKELY THIS AFTERNOON ACROSS AREAS EAST OF A AMERICUS TO ATLANTA TO
GAINSVILLE LINE. HEAVY FLOODING RAINS ARE ALSO POSSIBLE THROUGH THIS
EVENING...GENERALLY NORTH AND WEST OF A CORDELE TO MACON TO CRAWFORD
LINE.

.DISCUSSION...
FAVORABLE VERTICAL WIND SHEAR FROM THE REMNANTS FAY...MODERATE
INSTABILITY AND LOCALIZED LIFTING SOUTH AND EAST OF THE CENTER OF
FAY WILL ALLOW ISOLATED TORNADOES TO DEVELOP ACROSS MUCH OF THE AREA
THIS AFTERNOON. CAPE VALUES SHOULD REMAIN BETWEEN 500 AND 1500.
INSTABILITY AND DEEP MOISTURE IS EXPECTED TO MOVE OUT OF THE AREA
FROM THE WEST TONIGHT.

WITH THE COPIOUS AMOUNT OF MOISTURE IN PLACE...HEAVY TROPICAL
SHOWERS WILL PRODUCE AN ADDITIONAL 1 TO 3 INCHES OF RAIN WITH
LOCALLY HIGHER AMOUNTS BEFORE THE PRECIPITATION BEGINS TO TAPER OFF
FROM THE WEST AND MOVING OUT BY MIDNIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
THERE WILL BE A CHANCE FOR THUNDERSTORMS EACH DAY...ESPECIALLY OVER
THE WEEKEND INTO MONDAY AS A FRONTAL BOUNDARY STALLS OVER THE STATE.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS ARE ENCOURAGED TO RELAY REPORTS OF SEVERE WEATHER VIA THE
INTERNET BY USING E-SPOTTER. A LINK TO THIS CAN BE FOUND ON OUR WEB
SITE AT WEATHER.GOV/ATLANTA.

In the hours before

Local storm report, Aug 26, 5:37 PM EDT, 1 hour 38 minutes before

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Special weather statement, Aug 26, 5:37 PM EDT, 1 hour 38 minutes before

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Special weather statement, Aug 26, 5:49 PM EDT, 1 hour 26 minutes before

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Local storm report, Aug 26, 7:03 PM EDT, 12 minutes before

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Local storm report, Aug 26, 7:06 PM EDT, 9 minutes before

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Special weather statement, Aug 26, 7:15 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 10:45 PM EDT	Tornado Warning	FFC	Oglethorpe, Wilkes	30 min
Aug 25, 11:08 PM EDT	Tornado Warning	FFC	Wilkes	52 min
Aug 25, 11:56 PM EDT	Tornado Warning	FFC	Bibb, Houston, Twiggs	49 min
Aug 26, 12:01 AM EDT	Tornado Warning	FFC	Barrow, Gwinnett, Oconee, Walton	44 min
Aug 26, 8:09 AM EDT	Tornado Warning	FFC	Cobb, DeKalb, Fulton	36 min
Aug 26, 9:21 AM EDT	Flash Flood Warning	FFC	Cobb	4 hr
Aug 26, 9:31 AM EDT	Tornado Warning	FFC	Talbot, Taylor, Upson	44 min
Aug 26, 9:59 AM EDT	Tornado Warning	FFC	Lamar	22 min
Aug 26, 11:34 AM EDT	Tornado Warning	FFC	Crawford, Monroe	41 min
Aug 26, 12:04 PM EDT	Tornado Warning	FFC	Jasper, Jones	41 min
Aug 26, 12:28 PM EDT	Tornado Warning	FFC	Crisp	47 min
Aug 26, 12:40 PM EDT	Flash Flood Warning	FFC	Lumpkin, White	6 hr
Aug 26, 12:40 PM EDT	Tornado Warning	FFC	Jasper, Morgan, Putnam	50 min
Aug 26, 1:16 PM EDT	Tornado Warning	FFC	Oconee, Walton	29 min
Aug 26, 1:30 PM EDT	Severe Thunderstorm Warning	FFC	Clarke, Jackson, Madison	30 min
Aug 26, 1:39 PM EDT	Flash Flood Warning	FFC	Towns	6 hr
Aug 26, 2:01 PM EDT	Tornado Warning	FFC	Clarke, Oconee, Oglethorpe	29 min
Aug 26, 2:07 PM EDT	Flash Flood Warning	FFC	Banks, Jackson	6 hr
Aug 26, 3:16 PM EDT	Flash Flood Warning	FFC	Newton, Rockdale	6 hr
Aug 26, 3:28 PM EDT	River Flood Warning	FFC	Forsyth, Fulton	6 hr
Aug 26, 3:49 PM EDT	Tornado Warning	FFC	Hall, White	41 min
Aug 26, 4:08 PM EDT	Tornado Warning	FFC	Barrow, Jackson	37 min
Aug 26, 4:10 PM EDT	Tornado Warning	FFC	Dooly, Houston, Macon, Peach	50 min
Aug 26, 4:36 PM EDT	Tornado Warning	FFC	Banks, Jackson	24 min
Aug 26, 4:55 PM EDT	Tornado Warning	FFC	Greene, Oglethorpe	50 min
Aug 26, 6:02 PM EDT	Tornado Warning	FFC	Greene, Oglethorpe, Taliaferro, Wilkes	58 min
Aug 26, 6:08 PM EDT	Tornado Warning	FFC	Banks, Hall	37 min
Aug 26, 6:24 PM EDT	Tornado Warning	FFC	Baldwin, Jones	38 min
Aug 26, 6:41 PM EDT	Flash Flood Warning	FFC	Lumpkin, White	6 hr
Aug 26, 7:00 PM EDT	Tornado Warning	FFC	Wilkes	15 min
Aug 26, 7:31 PM EDT	Tornado Warning	FFC	Hancock, Taliaferro, Warren	44 min

Nearby

Areal Flood Warnings in Georgia, 2008 Every areal flood warning in 2008

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.