Alert archive / Georgia / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 315, NWS Atlanta, GA

October 25, 20104 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Oct 25, 2010, 10:41 AM EDT for 4 counties in Georgia. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 25, 2010, 10:41 AM EDT (14:41 UTC)
Expired: Oct 25, 2010, 11:30 AM EDT
In force: 49 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Glascock County, GA, Hancock County, GA, Warren County, GA, Washington County, GA

The radar

The Robins AFB radar (KJGX), 81 km from the middle of the area, began a volume at 14:43 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 25, 5:35 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 2.7 hours before the alert went out and 162 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: 324 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 707 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 183 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Oct 25, 10:10 AM EDT, 31 minutes earlier.

Area forecast discussion, Oct 25, 10:10 AM EDT, 31 minutes before

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Hazardous weather outlook, Oct 25, 6:02 AM EDT, 4 hours 39 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
602 AM EDT MON OCT 25 2010

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-261015-
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-
602 AM EDT MON OCT 25 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...TODAY AND TONIGHT
ISOLATED SEVERE THUNDERSTORMS EXPECTED ACROSS NORTH AND CENTRAL
GEORGIA TODAY.

.SYNOPSIS...
A STRONG UPPER LEVEL DISTURBANCE WILL MOVE EAST ACROSS THE STATE
TODAY.

.PRIMARY HAZARDS...
THE PRIMARY HAZARDS FROM ANY SEVERE THUNDERSTORMS WILL BE DAMAGING
WINDS....HAIL...CLOUD TO GROUND LIGHTNING...AND ISOLATED TORNADOES.
HEAVY RAIN WILL ALSO BE POSSIBLE. THE MOST LIKELY LOCATION FOR
SEVERE THUNDERSTORMS WILL BE AREAS IN NORTH AND CENTRAL GEORGIA.

.DISCUSSION...
A DEVELOPING LINE OF SHOWERS AND THUNDERSTORMS OVER ALABAMA IS
MOVING INTO NW GA THIS MORNING. THIS LINE IS VERY UNSTABLE AND HAS
SEVERAL STORMS ALONG IT WITH A HISTORY OF PRODUCING NUMEROUS CLOUD
TO GROUND LIGHTNING STRIKES...DAMAGING WINDS...AND POSSIBLY AN
ISOLATED TORNADO OR TWO. AS THIS LINE MOVES INTO GA IT SHOULD
STRENGTHEN AS INSTABILITY INDICES INCREASE ACROSS THE STATE TODAY.
CAPES ARE EXPECTED NEAR 2000...LIFTED INDICES WILL BE IN THE -2 TO
-6 RANGE ALONG WITH GOOD VERTICAL WIND SHEAR AND DAYTIME HEATING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
ISOLATED TO SCATTERED THUNDERSTORMS EXPECTED TUESDAY AND WEDNESDAY
OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS 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

Local storm report, Oct 25, 10:15 AM EDT, 26 minutes before

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Special weather statement, Oct 25, 10:21 AM EDT, 20 minutes before

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Local storm report, Oct 25, 10:27 AM EDT, 14 minutes before

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Special weather statement, Oct 25, 10:29 AM EDT, 12 minutes before

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Special weather statement, Oct 25, 10:34 AM EDT, 7 minutes before

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Local storm report, Oct 25, 10:40 AM EDT, 1 minute 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
Oct 25, 5:17 AM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	43 min
Oct 25, 5:20 AM EDT	Tornado Warning	FFC	Dade, Walker	25 min
Oct 25, 5:26 AM EDT	Severe Thunderstorm Warning	FFC	Chattooga	49 min
Oct 25, 5:37 AM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Walker, Whitfield	23 min
Oct 25, 5:49 AM EDT	Severe Thunderstorm Warning	FFC	Bartow, Floyd, Gordon	41 min
Oct 25, 6:04 AM EDT	Severe Thunderstorm Warning	FFC	Gilmer, Murray, Whitfield	31 min
Oct 25, 6:07 AM EDT	Severe Thunderstorm Warning	FFC	Haralson, Polk	38 min
Oct 25, 6:16 AM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer, Pickens	44 min
Oct 25, 6:27 AM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Cobb, Paulding	48 min
Oct 25, 6:37 AM EDT	Severe Thunderstorm Warning	FFC	Bartow	23 min
Oct 25, 6:40 AM EDT	Severe Thunderstorm Warning	FFC	Carroll, Douglas, Heard	50 min
Oct 25, 6:54 AM EDT	Severe Thunderstorm Warning	FFC	Dawson, Lumpkin, Towns, Union, White	43 min
Oct 25, 7:11 AM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Fayette, Fulton	49 min
Oct 25, 7:54 AM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, DeKalb, Fayette, Fulton, Henry and 2 more	51 min
Oct 25, 10:06 AM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Jones	39 min
Oct 25, 11:48 AM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Johnson, Treutlen	42 min
Oct 25, 1:41 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Dodge, Pulaski	49 min
Oct 25, 1:52 PM EDT	Severe Thunderstorm Warning	FFC	Laurens, Wilkinson	53 min
Oct 25, 2:38 PM EDT	Severe Thunderstorm Warning	FFC	Houston, Twiggs	52 min
Oct 25, 2:49 PM EDT	Tornado Warning	FFC	Houston, Twiggs	26 min
Oct 25, 3:13 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Laurens	47 min
Oct 25, 3:22 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Washington	38 min
Oct 25, 3:35 PM EDT	Tornado Warning	FFC	Johnson, Laurens	25 min
Oct 25, 3:39 PM EDT	Tornado Warning	FFC	Laurens	36 min
Oct 25, 3:51 PM EDT	Tornado Warning	FFC	Emanuel, Treutlen	39 min
Oct 25, 4:15 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Laurens, Treutlen	45 min
Oct 25, 4:24 PM EDT	Tornado Warning	FFC	Emanuel	51 min
Oct 25, 4:59 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Johnson, Laurens, Treutlen	46 min
Oct 25, 5:15 PM EDT	Severe Thunderstorm Warning	FFC	Crisp, Dooly, Sumter	45 min
Oct 25, 5:38 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	24 min
Oct 25, 6:10 PM EDT	Severe Thunderstorm Warning	FFC	Johnson, Laurens	50 min
Oct 25, 6:32 PM EDT	Severe Thunderstorm Warning	FFC	Dooly, Houston	28 min
Oct 25, 6:51 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Jefferson, Johnson	39 min
Oct 25, 7:25 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Johnson	21 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2010 Every severe thunderstorm warning in 2010

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.