Alert archive / Georgia / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 140, NWS Atlanta, GA

April 4, 2008Chattooga County, Walker County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 4, 2008, 2:11 PM EDT for Chattooga County, Walker County, 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 outline as issued.

The facts

Issued: Apr 4, 2008, 2:11 PM EDT (18:11 UTC)
Expired: Apr 4, 2008, 3:00 PM EDT
In force: 49 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Chattooga County, GA, Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 82 km from the middle of the area, began a volume at 18:13 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.2 hours before the alert went out and 153 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 504 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 245 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.

000 
WUUS52 KFFC 041811
SVRFFC
GAC055-295-041900-
/O.NEW.KFFC.SV.W.0140.080404T1811Z-080404T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
211 PM EDT FRI APR 4 2008

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CHATTOOGA COUNTY IN NORTHWEST GEORGIA
  SOUTHERN WALKER COUNTY IN NORTHWEST GEORGIA

* UNTIL 300 PM EDT

* AT 209 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60
  MPH.  THIS STORM WAS LOCATED 13 MILES WEST OF BERRYTON...MOVING
  EAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SUMMERVILLE...TRION AND LA FAYETTE.

DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3461 8511 3453 8513 3449 8515 3448 8517
      3442 8550 3458 8554 3462 8554 3466 8549
      3477 8520
TIME...MOT...LOC 1811Z 254DEG 29KT 3449 8559

$$

3 follow-up statements

000 
WWUS52 KFFC 041829
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
229 PM EDT FRI APR 4 2008

GAC055-295-041900-
/O.CON.KFFC.SV.W.0140.000000T0000Z-080404T1900Z/
CHATTOOGA GA-WALKER GA-
229 PM EDT FRI APR 4 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR SOUTHERN WALKER AND NORTHERN CHATTOOGA COUNTIES...

AT 227 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP
TO 60 MPH. THIS STORM WAS LOCATED NEAR SUBLIGNA...MOVING NORTHEAST AT
45 MPH. ANOTHER STRONG TO SEVERE THUNDERSTORM WAS LOCATED 5 MILES 
SOUTHWEST OF CLOUDLAND STATE PARK THAT IS CAPABLE OF DAMAGING WINDS UP
TO 60 MPH...ALSO MOVING NORTHEAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LINWOOD...LA FAYETTE AND NAOMI.

DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT FRIDAY EVENING
FOR NORTHERN GEORGIA.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3477 8520 3461 8511 3449 8515 3448 8518
      3442 8550 3457 8552 3462 8546 3468 8543
TIME...MOT...LOC 1829Z 237DEG 39KT 3462 8538

$$

000 
WWUS52 KFFC 041841
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
241 PM EDT FRI APR 4 2008

GAC055-041851-
/O.CAN.KFFC.SV.W.0140.000000T0000Z-080404T1900Z/
CHATTOOGA GA-
241 PM EDT FRI APR 4 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CHATTOOGA COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT FRIDAY EVENING
FOR NORTHERN GEORGIA.

IF YOU SAW WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3477 8520 3461 8511 3460 8538 3463 8537
      3471 8535
TIME...MOT...LOC 1841Z 233DEG 38KT 3470 8524

$$

GAC295-041900-
/O.CON.KFFC.SV.W.0140.000000T0000Z-080404T1900Z/
WALKER GA-
241 PM EDT FRI APR 4 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR CENTRAL WALKER COUNTY...

AT 237 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR LA
FAYETTE...MOVING NORTHEAST AT 43 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NAOMI.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT FRIDAY EVENING
FOR NORTHERN GEORGIA.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3477 8520 3461 8511 3460 8538 3463 8537
      3471 8535
TIME...MOT...LOC 1841Z 233DEG 38KT 3470 8524

$$

000 
WWUS52 KFFC 041852
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
251 PM EDT FRI APR 4 2008

GAC295-041901-
/O.EXP.KFFC.SV.W.0140.000000T0000Z-080404T1900Z/
WALKER GA-
251 PM EDT FRI APR 4 2008

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WALKER COUNTY WILL 
BE ALLOWED TO EXPIRE AT 300 PM EDT...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF 
THE COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT FRIDAY EVENING
FOR NORTHERN GEORGIA.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3477 8520 3461 8511 3460 8538 3463 8537
      3471 8535
TIME...MOT...LOC 1851Z 233DEG 38KT 3476 8514

$$

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 Apr 4, 5:17 AM EDT, 8 hours 54 minutes earlier.

Area forecast discussion, Apr 4, 5:17 AM EDT, 8 hours 54 minutes before

AREA FORECAST DISCUSSION...UPDATED FOR AVIATION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
517 AM EDT FRI APR 4 2008

.SHORT TERM /TODAY THROUGH SUNDAY/...
MAIN CONCERNS FOR TODAY ARE WHEN...OR IF...WEDGE BREAKS AND
POSSIBILITY FOR SEVERE THUNDERSTORMS. MODELS ARE SCOURING OUT THE
WEDGE THIS MORNING. HOWEVER...THE MODELS TEND TO BE A BIT TOO FAST
WITH RESPECT TO THIS KIND OF FEATURE. WITH STRONG SOUTHERLY FLOW
DEVELOPING ACROSS THE REGION THE WEDGE SHOULD BEGIN RETREATING BY
LATE MORNING...BUT WILL LIKELY HOLD ON WELL INTO THE AFTERNOON ACROSS
THE NORTHEAST. MODELS ARE INDICATING THAT THE ATMOSPHERE OVER THE
FORECAST AREA WILL BECOME MODERATELY UNSTABLE BY THIS AFTERNOON
ACROSS NORTH AND CENTRAL GEORGIA. COMBINED WITH MODERATE LOW LEVEL
SHEER AND AN APPROACHING COLD FRONT...ISOLATED SEVERE THUNDERSTORMS
ARE POSSIBLE. BEST CHANCES WILL BE ACROSS THE WEST AND NORTHWEST
WHERE BETTER LIFT WILL BE AVAILABLE OUT AHEAD OF THE FRONT...AND
WEDGE SHOULD BE GONE BY KATE MORNING. A COLD FRONT PUSHES INTO
NORTHWEST GEORGIA BY LATE TODAY...SLOWLY WORKING ITS WAY INTO CENTRAL
GEORGIA BY SATURDAY MORNING. THIS SHOULD BE THE MAIN FOCUS FOR
ORGANIZED CONVECTION. DRIER AIRMASS MOVES INTO THE FORECAST AREA
SATURDAY NIGHT THROUGH SUNDAY SHUTTING OFF THE RAIN CHANCES FOR THE
REMAINDER OF THE SHORT TERM FORECAST PERIOD.

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
PATTERN NOT WELL DEFINED THROUGH THE EXTENDED FORECAST PERIOD. MODELS
ARE PUSHING A COLD FRONT INTO THE TENNESSEE VALLEY BY MID WEEK...BUT
THERE APPEARS TO BE LITTLE IMPETUS TO DRIVE THE FRONT INTO GEORGIA.
INCREASED MOISTURE AHEAD OF THIS SYSTEM CALLS FOR AT LEAST A SLIGHT
CHANCE OF PRECIPITATION. UPPER LEVEL PATTERN SHOWS SIGNS OF BECOMING
MORE AMPLIFIED THROUGH THE REMAINDER OF THE EXTENDED FORECAST PERIOD
WITH GENERAL SOUTHWEST FLOW ALOFT OVER GEORGIA. THIS WOULD HELP TO
KEEP AT LEAST LOW POPS IN THE FORECAST THROUGH THE END OF THE WEEK.

&&

.AVIATION...
THE COOL EASTERLY WEDGE HAS RESULTED IN LIFR CIGS/VIS ACROSS THE
ATLANTA AREA THIS MORNING. MODEL GUIDANCE HOLD LIFR CIGS DOWN UNTIL
18Z OR SO. THIS SEEMS A BIT LONG AND THEREFORE PREFER TO SHOW A
GRADUAL IMPROVEMENT OF CIGS THROUGH THE MORNING HOURS AS THE WEDGE
SLOWLY RETREATS NORTHWARD AS WINDS BECOME MORE SOUTHERLY. WILL
PROBABLY STAY CLOSE TO CURRENT TAF PATTERN AND SHOW IFR CIGS BY
14Z...THEN MVFR CIGS BY 16Z. MAY HOLD ONTO MVFR CIGS (BKN025) IN
ATLANTA AREA UNTIL TOWARD 20Z TO ALLOW AMPLE TIME TO GET DEEP INTO
THE WARM SECTOR. AT THIS TIME...NOT EXPECTING MUCH OF A TSTM THREAT
IN THE ATLANTA AREA UNTIL MID AFTERNOON WHEN ISOLATED STORMS DEVELOP
AHEAD OF THE COLD FRONT. MODELS SUGGEST A SQUALL LINE MIGHT BRING
STRONG/SEVERE TSTMS TO ATLANTA SOMETIME BETWEEN 00Z-05Z. SPC DOES
HAVE THE AREA IN A SLIGHT RISK TONIGHT. RAIN SHOWERS WILL LINGER  IN
ATLANTA AREA AFTER 06Z ALONG WITH THE MVFR CIGS. HOWEVER...SUSPECT
THE TSTM THREAT WILL MOVE SOUTH OF ATL BETWEEN 06-09Z AS THE FRONT
SLIPS INTO CENTRAL GA. WINDS WILL PROBABLY GET GUSTY IN THE
AFTERNOON AS THEY GO SOUTH...THEN SW AHEAD OF THE FRONT. WINDS
SHOULD BEGIN TO DIMINISH A BIT DURING THE EVENING HOURS AS THE
FRONTAL TROUGH SLIPS INTO GA. /39

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          71  59  69  47  72 /  60  70  60  10  10
ATLANTA         73  59  68  49  72 /  70  70  60  10  10
BLAIRSVILLE     67  54  63  42  71 /  80  90  50  10  10
CARTERSVILLE    73  56  67  46  73 /  80  80  50  10  10
COLUMBUS        80  63  73  52  78 /  50  70  70  10  10
GAINESVILLE     68  57  66  49  72 /  80  80  60  10  10
MACON           80  64  74  50  76 /  40  60  70  20  20
ROME            75  56  67  45  76 /  90  90  50  10  10
PEACHTREE CITY  75  59  69  46  74 /  60  70  60  10  10
VIDALIA         82  66  79  54  78 /  30  40  70  40  20

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

20

In the hours before

Special weather statement, Apr 4, 1:17 PM EDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
117 PM EDT FRI APR 4 2008

GAZ001-041745-
117 PM EDT FRI APR 4 2008

...SIGNIFICANT WEATHER ALERT FOR 45 MPH WINDS IN DADE COUNTY UNTIL
145 PM EDT...

AT 1212 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES NORTHWEST OF TRENTON...MOVING NORTHEAST
AT 45 MPH.

WIND GUSTS OF 45 MPH ARE LIKELY AS THIS STORM MOVES ACROSS DADE
COUNTY THROUGH 145 PM EDT. SOME LOCATIONS IN THE PATH OF THE STORM
INCLUDE RISING FAWN...CLOUDLAND STATE PARK...TRENTON...NEW ENGLAND
AND WILDWOOD.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 1:51 PM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	39 min
Apr 4, 3:18 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Chattooga, Floyd, Gordon	42 min
Apr 4, 4:00 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Gordon, Pickens	45 min
Apr 4, 4:04 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Coweta, Douglas, Fulton, Heard	41 min
Apr 4, 4:23 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, DeKalb, Douglas, Fayette, Fulton, Henry	55 min
Apr 4, 4:26 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Cobb, Paulding, Polk	49 min
Apr 4, 4:42 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Gilmer, Lumpkin, Pickens	37 min
Apr 4, 5:03 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Coweta, Heard	28 min
Apr 4, 5:07 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Cobb, Forsyth, Fulton	38 min
Apr 4, 5:14 PM EDT	Severe Thunderstorm Warning	FFC	Haralson, Paulding, Polk	46 min
Apr 4, 5:16 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb, Gwinnett, Rockdale, Walton	44 min
Apr 4, 5:59 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Heard, Troup	46 min
Apr 4, 6:00 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, Clarke, Jackson	33 min
Apr 4, 6:12 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Lamar, Pike, Spalding	16 min
Apr 4, 6:25 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Carroll, Haralson, Paulding, Polk	20 min
Apr 4, 6:33 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Fayette, Meriwether, Pike, Spalding, Troup	42 min
Apr 4, 6:50 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Jasper, Morgan, Oconee	40 min
Apr 4, 6:55 PM EDT	Severe Thunderstorm Warning	FFC	Oglethorpe	35 min
Apr 4, 7:06 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Fayette, Henry, Spalding	39 min
Apr 4, 7:29 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Oglethorpe, Wilkes	46 min
Apr 4, 7:37 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Henry, Newton, Rockdale	38 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2008 Every severe thunderstorm 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; radar from the NEXRAD Level II archive.