Alert archive / Georgia / Tornado Warnings in 2008

Tornado Warning 74, NWS Atlanta, GA

May 20, 2008Cherokee County, Cobb County, Fulton County, Georgia

NWS Atlanta, GA issued this tornado warning at May 20, 2008, 6:33 PM EDT for Cherokee County, Cobb County, Fulton County, Georgia. It was in force for 27 min. 5 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
May 20, 2008, 6:33 PM EDT (22:33 UTC)
Expired
May 20, 2008, 7:00 PM EDT
In force
27 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Cherokee County, GA, Cobb County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 79 km from the middle of the area, began a volume at 22:34 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
May 20, 6:35 PM EDTTSTM WND DMG5 Se Holly Springs, GAPOSSIBLE TORNADO HAS BEEN REPORTED SOUTHEAST OF HOLLY SPRINGS...SEVERAL REPORTS OF TREES DOWN HAVE BEEN COMING IN FROM THE AREA.
May 20, 6:35 PM EDTTORNADO 15 Se Holly Springs, GAPRELIMINARY FINDINGS...EF1 TORNADO. PATH...APPROXIMATELY 5 MILES LONG AND 3/4 TO 1 MILE WIDE. OVER 100 HOMES HAVE BEEN DAMAGED.
May 20, 6:35 PM EDTTORNADO5 Se Holly Springs, GAPOSSIBLE TORNADO HAS BEEN REPORTED SOUTHEAST OF HOLLY SPRINGS...OVER 100 HOMES HAVE BEEN DAMAGED.
May 20, 6:40 PM EDTTSTM WND DMG4 Nw Roswell, GASEVERAL TREES AND POWER LINES WERE KNOCKED DOWN IN MOUNTAIN PARK.
May 20, 6:45 PM EDTHAIL 1.252 N Roswell, GATHE PORTION OF A METAL CARPORT ROOF WAS ALSO RIPPED OFF.

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

The watch it was issued in

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

IssuedProductOfficeLasted
May 20, 2:59 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.6 hours before the alert went out and 76 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 12:00Z on 2008-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 572 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2008-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 square meters per square second.19395878Sfc1 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
572 J/kg
Mixed-layer CIN
-199 J/kg
Mixed-layer LCL
979 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
251 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS52 KFFC 202232
TORFFC
GAC057-067-121-202300-
/O.NEW.KFFC.TO.W.0074.080520T2233Z-080520T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
633 PM EDT TUE MAY 20 2008

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
  NORTHEASTERN COBB COUNTY IN NORTH CENTRAL GEORGIA
  NORTHEASTERN FULTON COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 700 PM EDT

* AT 629 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  WOODSTOCK...MOVING SOUTHEAST AT 39 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ROSWELL AND ALPHARETTA.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO A
BASEMENT OR INTERIOR ROOM ON THE GROUND FLOOR. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY 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 3403 8416 3400 8419 3401 8423 3396 8428
      3397 8434 3393 8435 3410 8461 3418 8445
      3409 8419 3405 8412
TIME...MOT...LOC 2233Z 293DEG 34KT 3410 8445

$$
4 follow-up statements
000 
WWUS52 KFFC 202242
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
641 PM EDT TUE MAY 20 2008

GAC057-067-121-202300-
/O.CON.KFFC.TO.W.0074.000000T0000Z-080520T2300Z/
COBB GA-CHEROKEE GA-FULTON GA-
641 PM EDT TUE MAY 20 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
NORTHEASTERN FULTON...SOUTH CENTRAL CHEROKEE AND NORTHEASTERN COBB
COUNTIES...

AT 641 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO ON THE 
GROUND ABOUT 5 MILES SOUTHEAST OF HOLY SPRINGS. THIS TORNADO WAS 
MOVING SOUTHEAST AT 40 MPH.

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

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS 
STORM IS PRODUCING A STRONG TORNADO. IF YOU ARE IN THE PATH OF 
THIS TORNADO...TAKE COVER IMMEDIATELY

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY 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 3403 8416 3400 8419 3401 8423 3396 8428
      3397 8434 3393 8435 3410 8461 3418 8445
      3409 8419 3405 8412
TIME...MOT...LOC 2241Z 296DEG 36KT 3406 8435

$$
000 
WWUS52 KFFC 202244 CCA
SVSFFC

SEVERE WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
641 PM EDT TUE MAY 20 2008

GAC057-067-121-202300-
/O.CON.KFFC.TO.W.0074.000000T0000Z-080520T2300Z/
COBB GA-CHEROKEE GA-FULTON GA-
641 PM EDT TUE MAY 20 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
NORTHEASTERN FULTON...SOUTH CENTRAL CHEROKEE AND NORTHEASTERN COBB
COUNTIES...

AT 641 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO ON THE 
GROUND ABOUT 5 MILES SOUTHEAST OF HOLLY SPRINGS. THIS TORNADO WAS 
MOVING SOUTHEAST AT 40 MPH.

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

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS 
STORM IS PRODUCING A STRONG TORNADO. IF YOU ARE IN THE PATH OF 
THIS TORNADO...TAKE COVER IMMEDIATELY

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY 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 3403 8416 3400 8419 3401 8423 3396 8428
      3397 8434 3393 8435 3410 8461 3418 8445
      3409 8419 3405 8412
TIME...MOT...LOC 2241Z 296DEG 36KT 3406 8435

$$
000 
WWUS52 KFFC 202254
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
652 PM EDT TUE MAY 20 2008

GAC057-067-202302-
/O.CAN.KFFC.TO.W.0074.000000T0000Z-080520T2300Z/
COBB GA-CHEROKEE GA-
652 PM EDT TUE MAY 20 2008

...THE TORNADO WARNING FOR SOUTH CENTRAL CHEROKEE AND NORTHEASTERN
COBB COUNTIES IS CANCELLED...

THE TORNADIC STORM HAS MOVED EAST OF THE COUNTIES AND THE TORNADO 
THREAT HAS ENDED AT THIS TIME.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY 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 3402 8418 3400 8419 3401 8423 3396 8428
      3398 8436 3404 8440 3410 8433 3409 8419
      3405 8412
TIME...MOT...LOC 2252Z 296DEG 36KT 3401 8423

$$

GAC121-202300-
/O.CON.KFFC.TO.W.0074.000000T0000Z-080520T2300Z/
FULTON GA-
652 PM EDT TUE MAY 20 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
NORTHEASTERN FULTON COUNTY...

AT 648 PM EDT...FULTON COUNTY EMERGENCY MANAGER REPORTED A FUNNEL 
CLOUD BETWEEN ALPHARETTA AND ROSWELL...AND NEAR THE NORTH POINT 
MALL. THIS FUNNEL CLOUD WAS MOVING SOUTHEAST AT 40 MPH.

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS 
STORM IS CAPABLE OF PRODUCING STRONG TO VIOLENT TORNADOES. IF YOU ARE
IN THE PATH OF THIS TORNADO...TAKE COVER IMMEDIATELY

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY 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 3402 8418 3400 8419 3401 8423 3396 8428
      3398 8436 3404 8440 3410 8433 3409 8419
      3405 8412
TIME...MOT...LOC 2252Z 296DEG 36KT 3401 8423

$$
000 
WWUS52 KFFC 202300
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
659 PM EDT TUE MAY 20 2008

GAC121-202309-
/O.EXP.KFFC.TO.W.0074.000000T0000Z-080520T2300Z/
FULTON GA-
659 PM EDT TUE MAY 20 2008

...THE TORNADO WARNING FOR NORTHEASTERN FULTON COUNTY WILL BE 
ALLOWED TO EXPIRE AT 700 PM EDT...

AT 659 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADIC STORM LOCATED ABOUT 8 MILES SOUTHEAST OF 
ALPHARETTA...AND MOVING SOUTHEAST AT 41 MPH.

THE STORM WAS MOVING EAST OUT OF NORTH FULTON COUNTY...THEREFORE THE 
TORNADO WARNING FOR NORTHEAST FULTON COUNTY WILL BE ALLOWED TO 
EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT 
TUESDAY 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 3402 8418 3400 8419 3401 8423 3396 8428
      3398 8436 3404 8440 3410 8433 3409 8419
      3405 8412
TIME...MOT...LOC 2259Z 296DEG 36KT 3398 8415

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 4:20 AM EDTWind AdvisoryFFCBanks, Barrow, Bartow, Carroll, Catoosa, Chattooga and 31 more15 hr
May 20, 3:48 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette33 min
May 20, 3:59 PM EDTSevere Thunderstorm WarningFFCDade, Walker46 min
May 20, 4:02 PM EDTSevere Thunderstorm WarningFFCClayton, Fayette, Henry, Spalding43 min
May 20, 4:21 PM EDTSevere Thunderstorm WarningFFCButts, Henry, Jasper, Newton39 min
May 20, 4:29 PM EDTSevere Thunderstorm WarningFFCFannin, Murray, Whitfield61 min
May 20, 4:31 PM EDTSevere Thunderstorm WarningFFCCatoosa, Walker29 min
May 20, 4:39 PM EDTSevere Thunderstorm WarningFFCChattooga, Walker51 min
May 20, 4:47 PM EDTSevere Thunderstorm WarningFFCMorgan, Putnam43 min
May 20, 4:59 PM EDTSevere Thunderstorm WarningFFCButts, Jasper, Monroe36 min
May 20, 5:08 PM EDTSevere Thunderstorm WarningFFCBartow, Floyd, Gordon67 min
May 20, 5:11 PM EDTSevere Thunderstorm WarningFFCGreene25 min
May 20, 5:13 PM EDTSevere Thunderstorm WarningFFCGlascock, Warren32 min
May 20, 5:16 PM EDTSevere Thunderstorm WarningFFCTaliaferro44 min
May 20, 5:24 PM EDTSevere Thunderstorm WarningFFCBaldwin, Jones, Putnam51 min
May 20, 5:27 PM EDTSevere Thunderstorm WarningFFCChattooga, Floyd78 min
May 20, 5:31 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Gordon, Pickens44 min
May 20, 5:33 PM EDTSevere Thunderstorm WarningFFCJefferson26 min
May 20, 5:39 PM EDTSevere Thunderstorm WarningFFCFannin, Gilmer, Lumpkin, Union17 min
May 20, 5:49 PM EDTSevere Thunderstorm WarningFFCBaldwin, Hancock, Washington41 min
May 20, 5:51 PM EDTTornado WarningFFCBartow, Cherokee15 min
May 20, 6:02 PM EDTSevere Thunderstorm WarningFFCGlascock, Jefferson, Washington58 min
May 20, 6:08 PM EDTSevere Thunderstorm WarningFFCCherokee, Cobb, Forsyth, Fulton52 min
May 20, 6:25 PM EDTSevere Thunderstorm WarningFFCBartow, Paulding50 min
May 20, 6:31 PM EDTSevere Thunderstorm WarningFFCJefferson, Washington29 min
May 20, 6:35 PM EDTSevere Thunderstorm WarningFFCHaralson, Polk55 min
May 20, 6:40 PM EDTSevere Thunderstorm WarningFFCGwinnett65 min
May 20, 6:44 PM EDTTornado WarningFFCDeKalb, Gwinnett46 min
May 20, 6:51 PM EDTTornado WarningFFCHaralson, Polk34 min
May 20, 7:02 PM EDTSevere Thunderstorm WarningFFCNewton, Rockdale, Walton58 min
May 20, 7:05 PM EDTSevere Thunderstorm WarningFFCClayton, Cobb, DeKalb, Fulton40 min
May 20, 7:14 PM EDTTornado WarningFFCCobb, DeKalb, Fulton31 min
May 20, 7:19 PM EDTSevere Thunderstorm WarningFFCCarroll, Douglas, Haralson, Paulding56 min
May 20, 7:41 PM EDTSevere Thunderstorm WarningFFCMorgan, Oconee34 min
May 20, 7:58 PM EDTSevere Thunderstorm WarningFFCGreene, Morgan, Oglethorpe, Putnam47 min

Nearby

Tornado Warnings in Georgia, 2008Every tornado warning in 2008Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.