Alert archive / Georgia / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 21, NWS Atlanta, GA

April 28, 2014Carroll County, Heard County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 28, 2014, 6:50 PM EDT for Carroll County, Heard County, Georgia. It was in force for 25 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: Apr 28, 2014, 6:50 PM EDT (22:50 UTC)
Expired: Apr 28, 2014, 7:15 PM EDT
In force: 25 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Carroll County, GA, Heard County, GA

The radar

The Atlanta radar (KFFC), 61 km from the middle of the area, began a volume at 22:54 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, 10.8 hours before the alert went out and 67 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1574 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

655 
WUUS52 KFFC 282250
SVRFFC
GAC045-149-282315-
/O.NEW.KFFC.SV.W.0021.140428T2250Z-140428T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
650 PM EDT MON APR 28 2014

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARROLL COUNTY IN NORTHWEST GEORGIA
  NORTHWESTERN HEARD COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 715 PM EDT

* AT 644 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...
  AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR 
  EPHESUS...MOVING NORTH AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ROOPVILLE...BOWDON...CARROLLTON AND MOUNT ZION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.

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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3366 8527 3370 8515 3369 8511 3372 8506
      3373 8493 3328 8515 3333 8528 3353 8532
TIME...MOT...LOC 2249Z 198DEG 31KT 3342 8525 3340 8520
          3337 8516

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 6:12 PM EDT	Special Weather Statement	FFC	Troup	33 min
Apr 28, 6:39 PM EDT	Special Weather Statement	FFC	Carroll, Heard, Troup	51 min
Apr 28, 6:52 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Heard, Meriwether, Troup	23 min
Apr 28, 7:03 PM EDT	Tornado Warning	FFC	Coweta, Heard, Meriwether, Troup	42 min
Apr 28, 7:10 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Douglas, Fulton	50 min
Apr 28, 7:45 PM EDT	Special Weather Statement	FFC	Coweta	30 min
Apr 28, 7:59 PM EDT	Special Weather Statement	FFC	Cobb, Douglas, Paulding	46 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2014 Every severe thunderstorm warning in 2014

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.