Alert archive / Georgia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 71, NWS Atlanta, GA

May 18, 2015Cobb County, Fulton County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 18, 2015, 4:38 PM EDT for Cobb County, Fulton County, Georgia. It was in force for 37 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
May 18, 2015, 4:38 PM EDT (20:38 UTC)
Expired
May 18, 2015, 5:15 PM EDT
In force
37 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Cobb County, GA, Fulton County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.6 hours before the alert went out and 55 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 2015-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 133 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2015-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.1939Sfc1 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
133 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
1120 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
40 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.

822 
WUUS52 KFFC 182038
SVRFFC
GAC067-121-182115-
/O.NEW.KFFC.SV.W.0071.150518T2038Z-150518T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
438 PM EDT MON MAY 18 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL FULTON COUNTY IN NORTH CENTRAL GEORGIA...
  CENTRAL COBB COUNTY IN NORTH CENTRAL GEORGIA...

* UNTIL 515 PM EDT

* AT 437 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SMYRNA...OR
  NEAR MARIETTA...MOVING EAST AT 15 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ATLANTA...MARIETTA...SANDY SPRINGS...SMYRNA...DUNWOODY...MIDTOWN...
  FAIR OAKS...GRANT PARK-ZOO ATLANTA...VININGS...JIM R MILLER PARK...
  TURNER FIELD...DOBBINS AIR RESERVE BASE...SWEET AUBURN...ATLANTIC
  STATION...WEST END...WHITE WATER PARK...MOUNT BETHEL...SIX FLAGS
  OVER GEORGIA...CASCADE HEIGHTS AND CHASTAIN MEMORIAL PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

IF YOU SEE WIND DAMAGE...HAIL OR 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 OR TWEET US YOUR REPORT AT NWSATLANTA.

&&

LAT...LON 3397 8458 3397 8430 3396 8430 3396 8435
      3372 8435 3372 8460 3374 8458 3379 8461
TIME...MOT...LOC 2037Z 279DEG 14KT 3387 8451 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
141 
WWUS52 KFFC 182104
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
504 PM EDT MON MAY 18 2015

GAC067-121-182115-
/O.CON.KFFC.SV.W.0071.000000T0000Z-150518T2115Z/
FULTON GA-COBB GA-
504 PM EDT MON MAY 18 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR CENTRAL FULTON AND SOUTHEASTERN COBB COUNTIES...

AT 503 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR NORTH
ATLANTA...OR 7 MILES NORTH OF ATLANTA...MOVING EAST AT 15 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ATLANTA...MARIETTA...SANDY SPRINGS...SMYRNA...DUNWOODY...GRANT
PARK-ZOO ATLANTA...MIDTOWN...WEST END...VININGS...SIX FLAGS OVER
GEORGIA...CASCADE HEIGHTS...CHASTAIN MEMORIAL PARK...TURNER FIELD...
PIEDMONT PARK...BOLTON...DOBBINS AIR RESERVE BASE...SWEET AUBURN...
BANKHEAD...VIRGINIA HIGHLAND AND ATLANTIC STATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

IF YOU SEE WIND DAMAGE...HAIL OR 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 OR TWEET US YOUR REPORT AT NWSATLANTA.

&&

LAT...LON 3389 8453 3393 8451 3397 8430 3396 8430
      3396 8435 3372 8435 3372 8452 3375 8456
      3380 8456
TIME...MOT...LOC 2103Z 279DEG 14KT 3385 8439 

HAIL...1.00IN
WIND...60MPH
 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 12:57 PM EDTSpecial Weather StatementFFCClayton, Cobb, DeKalb, Fulton33 min
May 18, 1:50 PM EDTSpecial Weather StatementFFCSpalding25 min
May 18, 2:01 PM EDTSpecial Weather StatementFFCDeKalb, Rockdale29 min
May 18, 2:28 PM EDTSpecial Weather StatementFFCJones32 min
May 18, 2:46 PM EDTSpecial Weather StatementFFCMorgan, Walton29 min
May 18, 2:55 PM EDTSpecial Weather StatementFFCJasper, Newton, Putnam35 min
May 18, 3:12 PM EDTSpecial Weather StatementFFCDade33 min
May 18, 3:27 PM EDTSpecial Weather StatementFFCMorgan, Oconee33 min
May 18, 4:15 PM EDTSpecial Weather StatementFFCCobb30 min
May 18, 4:21 PM EDTSevere Thunderstorm WarningFFCCobb24 min
May 18, 4:38 PM EDTSpecial Weather StatementFFCWilkes22 min
May 18, 4:59 PM EDTSpecial Weather StatementFFCWilcox46 min
May 18, 5:13 PM EDTSpecial Weather StatementFFCDeKalb, Gwinnett32 min
May 18, 5:39 PM EDTSpecial Weather StatementFFCMarion36 min
May 18, 5:40 PM EDTSpecial Weather StatementFFCClayton, DeKalb35 min
May 18, 5:44 PM EDTSpecial Weather StatementFFCWilcox61 min
May 18, 5:48 PM EDTSpecial Weather StatementFFCJohnson27 min
May 18, 5:49 PM EDTSpecial Weather StatementFFCCherokee, Dawson, Fannin, Gilmer, Lumpkin41 min
May 18, 6:13 PM EDTSpecial Weather StatementFFCClayton, DeKalb, Fayette, Henry, Rockdale32 min
May 18, 6:24 PM EDTSpecial Weather StatementFFCEmanuel51 min
May 18, 6:29 PM EDTSpecial Weather StatementFFCLumpkin, Union, White46 min
May 18, 6:42 PM EDTSpecial Weather StatementFFCNewton, Rockdale33 min
May 18, 6:46 PM EDTSpecial Weather StatementFFCHenry29 min
May 18, 6:51 PM EDTSpecial Weather StatementFFCWebster24 min
May 18, 7:17 PM EDTSpecial Weather StatementFFCTowns, White28 min
May 18, 7:18 PM EDTSpecial Weather StatementFFCWebster27 min
May 18, 7:28 PM EDTSpecial Weather StatementFFCHenry, Spalding32 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2015Every severe thunderstorm warning in 2015

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.