Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 329, NWS Atlanta, GA

August 7, 2012Montgomery County, Wheeler County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 7, 2012, 5:02 PM EDT for Montgomery County, Wheeler County, Georgia. It was in force for 43 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: Aug 7, 2012, 5:02 PM EDT (21:02 UTC)
Expired: Aug 7, 2012, 5:45 PM EDT
In force: 43 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Montgomery County, GA, Wheeler County, GA

The radar

The Robins AFB radar (KJGX), 94 km from the middle of the area, began a volume at 21:04 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

Jacksonville, FL (KJAX), launched 12:00Z, 9.0 hours before the alert went out and 201 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: 355 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 859 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 37 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.

395 
WUUS52 KFFC 072102
SVRFFC
GAC209-309-072145-
/O.NEW.KFFC.SV.W.0329.120807T2102Z-120807T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
502 PM EDT TUE AUG 7 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONTGOMERY COUNTY IN CENTRAL GEORGIA
  EASTERN WHEELER COUNTY IN CENTRAL GEORGIA

* UNTIL 545 PM EDT

* AT 459 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 UVALDA...
  MOVING NORTH AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ALSTON...MOUNT VERNON...AILEY...HIGGSTON AND TARRYTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3200 8269 3231 8265 3236 8241 3230 8243
      3197 8248
TIME...MOT...LOC 2102Z 192DEG 15KT 3207 8257

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 2:11 AM EDT	Special Weather Statement	FFC	Union	34 min
Aug 7, 2:21 PM EDT	Special Weather Statement	FFC	Cherokee	24 min
Aug 7, 3:36 PM EDT	Special Weather Statement	FFC	Cobb	39 min
Aug 7, 4:15 PM EDT	Special Weather Statement	FFC	Toombs	30 min
Aug 7, 4:32 PM EDT	Special Weather Statement	FFC	Montgomery, Telfair, Wheeler	28 min
Aug 7, 4:40 PM EDT	Special Weather Statement	FFC	Wilkes	35 min
Aug 7, 4:44 PM EDT	Special Weather Statement	FFC	Toombs	16 min
Aug 7, 4:52 PM EDT	Special Weather Statement	FFC	Union	38 min
Aug 7, 4:58 PM EDT	Special Weather Statement	FFC	Montgomery, Telfair, Toombs, Wheeler	32 min
Aug 7, 5:09 PM EDT	Special Weather Statement	FFC	Wilkes	36 min
Aug 7, 5:20 PM EDT	Special Weather Statement	FFC	Emanuel	25 min
Aug 7, 5:49 PM EDT	Special Weather Statement	FFC	Laurens	26 min
Aug 7, 5:59 PM EDT	Special Weather Statement	FFC	Johnson	31 min
Aug 7, 6:22 PM EDT	Special Weather Statement	FFC	Johnson	23 min
Aug 7, 6:57 PM EDT	Special Weather Statement	FFC	Glascock	33 min
Aug 7, 7:05 PM EDT	Special Weather Statement	FFC	Washington	25 min
Aug 7, 7:17 PM EDT	Special Weather Statement	FFC	Hall	28 min
Aug 7, 7:34 PM EDT	Special Weather Statement	FFC	Glascock, Washington	86 min
Aug 7, 7:56 PM EDT	Special Weather Statement	FFC	Banks, Madison	49 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012 Every severe thunderstorm warning in 2012

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.