Alert archive / Georgia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 79, NWS Atlanta, GA

June 11, 2016Chattahoochee County, Stewart County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 11, 2016, 4:53 PM EDT for Chattahoochee County, Stewart County, Georgia. It was in force for 33 min. 1 report 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: Jun 11, 2016, 4:53 PM EDT (20:53 UTC)
Expired: Jun 11, 2016, 5:26 PM EDT
In force: 33 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Chattahoochee County, GA, Stewart County, GA

The radar

The Maxwell AFB radar (KMXX), 86 km from the middle of the area, began a volume at 20:53 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

Time	Report	Where	Remark
Jun 11, 4:55 PM EDT	TSTM WND DMG	4 Ssw Cusseta, GA	5 TRESS WERE BLOWN DOWN ON RIVER BEND ROAD

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, 8.9 hours before the alert went out and 131 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: 3 J/kg
Mixed-layer CIN: -307 J/kg
Mixed-layer LCL: 1840 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

877 
WUUS52 KFFC 112053
SVRFFC
GAC053-259-112145-
/O.NEW.KFFC.SV.W.0079.160611T2053Z-160611T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
453 PM EDT SAT JUN 11 2016

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN STEWART COUNTY IN WEST CENTRAL GEORGIA...
  SOUTHWESTERN CHATTAHOOCHEE COUNTY IN WEST CENTRAL GEORGIA...

* UNTIL 545 PM EDT

* AT 453 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR FORT BENNING/LAWSON ARMY AIR FLD TO 6 MILES
  SOUTHWEST OF CUSSETA...MOVING WEST AT 5 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
  CUSSETA...FORT BENNING/LAWSON ARMY AIR FLD...RENFROE...LOUVALE...
  JAMESTOWN/SOUTH FORT BENNING AND BROOKLYN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE IMMEDIATELY TO SHELTER INSIDE A STRONG BUILDING. STAY
AWAY FROM WINDOWS.

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 3216 8503 3218 8501 3220 8496 3221 8498
      3222 8498 3222 8493 3224 8491 3225 8492
      3226 8489 3230 8494 3233 8501 3234 8501
      3236 8498 3237 8498 3236 8475 3214 8466
TIME...MOT...LOC 2053Z 089DEG 5KT 3232 8496 3223 8484 

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

1 follow-up statement

799 
WWUS52 KFFC 112126
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
526 PM EDT SAT JUN 11 2016

GAC053-259-112136-
/O.CAN.KFFC.SV.W.0079.000000T0000Z-160611T2145Z/
STEWART GA-CHATTAHOOCHEE GA-
526 PM EDT SAT JUN 11 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN STEWART AND
SOUTHWESTERN CHATTAHOOCHEE COUNTIES IS CANCELLED...
            
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3216 8503 3218 8501 3220 8496 3221 8498
      3222 8498 3222 8493 3224 8491 3225 8492
      3226 8489 3230 8494 3233 8501 3234 8501
      3236 8498 3237 8498 3236 8475 3214 8466
TIME...MOT...LOC 2126Z 089DEG 5KT 3232 8501 3223 8489 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 3:52 PM EDT	Special Weather Statement	FFC	Chattahoochee, Marion, Schley	38 min
Jun 11, 4:11 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Muscogee	49 min
Jun 11, 4:58 PM EDT	Special Weather Statement	FFC	Muscogee	47 min
Jun 11, 5:28 PM EDT	Special Weather Statement	FFC	Stewart	47 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.