Alert archive / Georgia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 80, NWS Atlanta, GA

June 12, 20164 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 12, 2016, 1:11 PM 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 outline as issued.

The facts

Issued: Jun 12, 2016, 1:11 PM EDT (17:11 UTC)
Expired: Jun 12, 2016, 2:00 PM EDT
In force: 49 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Dawson County, GA, Forsyth County, GA, Hall County, GA, Lumpkin County, GA

The radar

The Atlanta radar (KFFC), 129 km from the middle of the area, began a volume at 17:14 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.2 hours before the alert went out and 126 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: 979 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1062 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: -8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

048 
WUUS52 KFFC 121711
SVRFFC
GAC085-117-139-187-121800-
/O.NEW.KFFC.SV.W.0080.160612T1711Z-160612T1800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
111 PM EDT SUN JUN 12 2016

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LUMPKIN COUNTY IN NORTH CENTRAL GEORGIA...
  NORTHWESTERN HALL COUNTY IN NORTH CENTRAL GEORGIA...
  NORTHEASTERN FORSYTH COUNTY IN NORTH CENTRAL GEORGIA...
  SOUTHEASTERN DAWSON COUNTY IN NORTH CENTRAL GEORGIA...

* UNTIL 200 PM EDT

* AT 111 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR DAHLONEGA...
  MOVING SOUTHEAST AT 20 MPH.

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

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GAINESVILLE...OAKWOOD...CLERMONT...AURARIA...WAR HILL PARK AND
  MURRAYVILLE.

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 3443 8406 3450 8401 3446 8369 3420 8394
TIME...MOT...LOC 1711Z 294DEG 17KT 3446 8400 

HAIL...0.88IN
WIND...60MPH
 
$$

2 follow-up statements

872 
WWUS52 KFFC 121729
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
129 PM EDT SUN JUN 12 2016

GAC085-187-121739-
/O.CAN.KFFC.SV.W.0080.000000T0000Z-160612T1800Z/
LUMPKIN GA-DAWSON GA-
129 PM EDT SUN JUN 12 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LUMPKIN AND
SOUTHEASTERN DAWSON COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3446 8369 3420 8394 3434 8398 3433 8396
      3436 8398 3439 8398 3440 8397 3441 8398
      3443 8397
TIME...MOT...LOC 1729Z 294DEG 17KT 3443 8391 

$$

GAC117-139-121800-
/O.CON.KFFC.SV.W.0080.000000T0000Z-160612T1800Z/
HALL GA-FORSYTH GA-
129 PM EDT SUN JUN 12 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT
FOR CENTRAL HALL AND NORTHEASTERN FORSYTH COUNTIES...

AT 129 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES SOUTHWEST
OF CLERMONT...OR 8 MILES SOUTHEAST OF DAHLONEGA...MOVING SOUTHEAST
AT 20 MPH.

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

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
GAINESVILLE...OAKWOOD AND MURRAYVILLE. 

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 3446 8369 3420 8394 3434 8398 3433 8396
      3436 8398 3439 8398 3440 8397 3441 8398
      3443 8397
TIME...MOT...LOC 1729Z 294DEG 17KT 3443 8391 

HAIL...0.88IN
WIND...60MPH
 
$$

767 
WWUS52 KFFC 121751
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
151 PM EDT SUN JUN 12 2016

GAC117-139-121800-
/O.EXP.KFFC.SV.W.0080.000000T0000Z-160612T1800Z/
HALL GA-FORSYTH GA-
151 PM EDT SUN JUN 12 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL HALL AND NORTHEASTERN
FORSYTH COUNTIES WILL EXPIRE AT 200 PM EDT...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3446 8369 3420 8394 3434 8398 3433 8396
      3436 8398 3439 8398 3440 8397 3441 8398
      3443 8397
TIME...MOT...LOC 1747Z 294DEG 17KT 3443 8391 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 12:44 PM EDT	Special Weather Statement	FFC	Dawson	31 min
Jun 12, 1:09 PM EDT	Special Weather Statement	FFC	Hall	36 min
Jun 12, 1:21 PM EDT	Special Weather Statement	FFC	Gordon	24 min
Jun 12, 1:43 PM EDT	Special Weather Statement	FFC	Bartow	32 min
Jun 12, 2:02 PM EDT	Special Weather Statement	FFC	Madison	28 min
Jun 12, 2:23 PM EDT	Special Weather Statement	FFC	Bartow	22 min
Jun 12, 2:27 PM EDT	Special Weather Statement	FFC	Oglethorpe	48 min
Jun 12, 2:42 PM EDT	Special Weather Statement	FFC	Clarke, Jackson	48 min
Jun 12, 2:47 PM EDT	Special Weather Statement	FFC	Bartow	43 min
Jun 12, 2:53 PM EDT	Special Weather Statement	FFC	Gwinnett	37 min
Jun 12, 3:11 PM EDT	Special Weather Statement	FFC	Clarke	49 min
Jun 12, 3:15 PM EDT	Special Weather Statement	FFC	Cobb	45 min
Jun 12, 3:19 PM EDT	Special Weather Statement	FFC	Floyd	41 min
Jun 12, 3:28 PM EDT	Special Weather Statement	FFC	Gwinnett	47 min
Jun 12, 3:32 PM EDT	Severe Thunderstorm Warning	FFC	Floyd	43 min
Jun 12, 3:52 PM EDT	Special Weather Statement	FFC	Hancock	38 min
Jun 12, 3:57 PM EDT	Special Weather Statement	FFC	Fulton	48 min
Jun 12, 4:06 PM EDT	Special Weather Statement	FFC	Polk	39 min
Jun 12, 4:13 PM EDT	Special Weather Statement	FFC	Greene	47 min
Jun 12, 4:23 PM EDT	Special Weather Statement	FFC	Baldwin	37 min
Jun 12, 4:33 PM EDT	Special Weather Statement	FFC	Floyd	42 min
Jun 12, 5:35 PM EDT	Special Weather Statement	FFC	Hancock	40 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2016 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.