Alert archive / Georgia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 200, NWS Atlanta, GA

July 11, 20166 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 11, 2016, 6:12 PM EDT for 6 counties in Georgia. It was in force for 48 min. 2 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
Jul 11, 2016, 6:12 PM EDT (22:12 UTC)
Expired
Jul 11, 2016, 7:00 PM EDT
In force
48 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Bartow County, GA, Cherokee County, GA, Cobb County, GA, Forsyth County, GA, Fulton County, GA, Paulding County, GA

The radar

The Atlanta radar (KFFC), 79 km from the middle of the area, began a volume at 22:14 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
Jul 11, 6:15 PM EDTHAIL 1Woodstock, GATRAINED SPOTTER REPORTS 1 INCH HAIL NEAR THE INTERSECTION OF HWY 92 AND RAGSDALE RD
Jul 11, 6:30 PM EDTTSTM WND DMGCumming, GAEMERGENCY MANAGER REPORTS A TREE DOWN ON BRIARWOOD TRAIL IN CUMMING...FRANCIS CIRCLE NEAR MILTON...WESTBROOK ROAD NEAR CHESTATEE... CROOKED O TRAIL NORTHEAST OF CHESTATEE...AND LANIER BEACH SOUTH RD IN CUMMING

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

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.2 hours before the alert went out and 77 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 2016-07-11Temperature 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°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 2016-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
-205 J/kg
Mixed-layer LCL
1028 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

373 
WUUS52 KFFC 112212
SVRFFC
GAC015-057-067-117-121-223-112300-
/O.NEW.KFFC.SV.W.0200.160711T2212Z-160711T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
612 PM EDT MON JUL 11 2016

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN PAULDING COUNTY IN GEORGIA...
  CHEROKEE COUNTY IN GEORGIA...
  WESTERN FORSYTH COUNTY IN GEORGIA...
  NORTHEASTERN FULTON COUNTY IN GEORGIA...
  NORTHERN COBB COUNTY IN GEORGIA...
  SOUTHEASTERN BARTOW COUNTY IN GEORGIA...

* UNTIL 700 PM EDT

* AT 612 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 7 MILES SOUTHWEST OF EMERSON TO NEAR KENNESAW TO
  NEAR ROSWELL...MOVING NORTHEAST AT 20 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
  MARIETTA...CANTON...CARTERSVILLE...CUMMING...SANDY SPRINGS...ROSWELL...
  JOHNS CREEK...ALPHARETTA...DUNWOODY...MILTON...KENNESAW...WOODSTOCK...
  ACWORTH...HOLLY SPRINGS...BERKELEY LAKE...EMERSON...WHITE...WALESKA...
  BRASWELL AND BUFFINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

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 3431 8473 3432 8415 3416 8408 3407 8412
      3405 8410 3403 8412 3403 8417 3399 8419
      3399 8420 3400 8422 3400 8424 3399 8426
      3397 8426 3395 8428 3397 8434 3393 8435
      3389 8445 3398 8460 3398 8496
TIME...MOT...LOC 2212Z 222DEG 19KT 3406 8485 3405 8456 3399 8444 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
186 
WWUS52 KFFC 112241
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
641 PM EDT MON JUL 11 2016

GAC067-223-112250-
/O.CAN.KFFC.SV.W.0200.000000T0000Z-160711T2300Z/
PAULDING GA-COBB GA-
641 PM EDT MON JUL 11 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PAULDING AND
NORTHERN COBB COUNTIES IS CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED 
AREA THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3431 8473 3432 8415 3416 8408 3407 8412
      3405 8410 3403 8412 3403 8417 3399 8419
      3400 8422 3399 8426 3404 8441 3407 8442
      3408 8452 3409 8456 3410 8488
TIME...MOT...LOC 2240Z 233DEG 32KT 3420 8463 3419 8434 3413 8422 

$$

GAC015-057-117-121-112300-
/O.CON.KFFC.SV.W.0200.000000T0000Z-160711T2300Z/
CHEROKEE GA-FORSYTH GA-FULTON GA-BARTOW GA-
641 PM EDT MON JUL 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR CHEROKEE...WESTERN FORSYTH...NORTHEASTERN FULTON AND SOUTHEASTERN
BARTOW COUNTIES...

AT 640 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES WEST OF HOLLY SPRINGS TO NEAR FREE HOME TO
NEAR MILTON...MOVING NORTHEAST AT 35 MPH.

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

SOURCE...SPOTTER 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
CANTON...CARTERSVILLE...CUMMING...ROSWELL...JOHNS CREEK...ALPHARETTA...
MILTON...WOODSTOCK...HOLLY SPRINGS...BERKELEY LAKE...EMERSON...WHITE...
WALESKA...BUFFINGTON...FREE HOME...LATHEMTOWN...HOLBROOK...LEBANON...UNION
HILL AND RED TOP MOUNTAIN STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

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 3431 8473 3432 8415 3416 8408 3407 8412
      3405 8410 3403 8412 3403 8417 3399 8419
      3400 8422 3399 8426 3404 8441 3407 8442
      3408 8452 3409 8456 3410 8488
TIME...MOT...LOC 2240Z 233DEG 32KT 3420 8463 3419 8434 3413 8422 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 3:24 PM EDTSpecial Weather StatementFFCWebster36 min
Jul 11, 3:39 PM EDTSevere Thunderstorm WarningFFCMarion, Schley, Stewart, Sumter, Webster51 min
Jul 11, 4:41 PM EDTSpecial Weather StatementFFCHarris34 min
Jul 11, 5:08 PM EDTSevere Thunderstorm WarningFFCHarris, Meriwether, Talbot, Troup52 min
Jul 11, 5:10 PM EDTSpecial Weather StatementFFCTroup35 min
Jul 11, 5:31 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette, Meriwether, Troup44 min
Jul 11, 6:02 PM EDTSpecial Weather StatementFFCFulton28 min
Jul 11, 6:06 PM EDTSpecial Weather StatementFFCCobb39 min
Jul 11, 6:13 PM EDTSevere Thunderstorm WarningFFCClayton, Fayette32 min
Jul 11, 6:16 PM EDTSevere Thunderstorm WarningFFCHenry29 min
Jul 11, 6:31 PM EDTSevere Thunderstorm WarningFFCDeKalb, Gwinnett, Newton, Rockdale, Walton29 min
Jul 11, 7:01 PM EDTSpecial Weather StatementFFCBartow, Cherokee, Dawson, Floyd, Forsyth, Gordon and 3 more44 min
Jul 11, 7:01 PM EDTSevere Thunderstorm WarningFFCBarrow, DeKalb, Gwinnett, Newton, Rockdale, Walton29 min
Jul 11, 7:09 PM EDTSevere Thunderstorm WarningFFCCherokee, Pickens36 min
Jul 11, 7:33 PM EDTSpecial Weather StatementFFCBarrow, Gwinnett, Jackson, Oconee, Walton27 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2016Every severe thunderstorm warning in 2016

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.