Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

April 5, 20124 counties in Georgia

NWS Atlanta, GA issued this special weather statement at Apr 5, 2012, 4:12 PM EDT for 4 counties in Georgia. It was in force for 63 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: Apr 5, 2012, 4:12 PM EDT (20:12 UTC)
Expired: Apr 5, 2012, 5:15 PM EDT
In force: 63 min
Issued by: NWS Atlanta, GA

Counties Johnson County, GA, Laurens County, GA, Washington County, GA, Wilkinson County, GA

The radar

The Robins AFB radar (KJGX), 59 km from the middle of the area, began a volume at 20:11 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
Apr 5, 4:30 PM EDT	TSTM WND DMG	Dublin, GA	SEVERAL TREES WERE REPORTED DOWN FROM DUBLIN THROUGH NORTHEAST PORTIONS OF THE COUNTY BY THE 911 CALL CENTER.
Apr 5, 5:15 PM EDT	TSTM WND DMG	4 W Kite, GA	FIRE RESCUE REPORTED ONE TREE DOWN ALONG MIDAS BRANTLEY 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, 8.2 hours before the alert went out and 183 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: 145 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 871 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: -41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

045 
WWUS82 KFFC 052012
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
412 PM EDT THU APR 5 2012

GAZ074-083>085-097-098-052115-
412 PM EDT THU APR 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR DIME SIZED HAIL AND 40 MPH WINDS
IN WASHINGTON...TWIGGS...TREUTLEN...LAURENS...JOHNSON AND WILKINSON
COUNTIES UNTIL 515 PM EDT...

AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER DEXTER...MOVING NORTHEAST AT 40 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE DIME SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
WASHINGTON...TWIGGS...TREUTLEN...LAURENS...JOHNSON AND WILKINSON
COUNTIES THROUGH 515 PM EDT. SOME LOCATIONS IN THE PATH OF THIS STORM
INCLUDE MONTROSE...DEXTER...CADWELL...ALLENTOWN...DANVILLE...RENTZ...
DUDLEY...CHAPPELLS MILL...NICKLESVILLE...HARLOW...EAST DUBLIN...
DUBLIN...TUCKERS CROSSROAD...MINTER AND BREWTON. HEAVY DOWNPOURS WILL
CAUSE PONDING OF WATER ON ROADWAYS.

&&

LAT...LON 3272 8245 3268 8250 3265 8247 3264 8251
      3258 8260 3254 8258 3230 8307 3258 8322
      3253 8335 3263 8344 3314 8268 3288 8251
      3282 8252 3276 8244
TIME...MOT...LOC 2012Z 245DEG 34KT 3248 8307

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 8:37 PM EDT	Special Weather Statement	FFC	DeKalb, Fulton	23 min
Apr 5, 3:04 PM EDT	Special Weather Statement	FFC	Houston	56 min
Apr 5, 3:08 PM EDT	Special Weather Statement	FFC	Gilmer	37 min
Apr 5, 3:14 PM EDT	Special Weather Statement	FFC	Bibb	46 min
Apr 5, 3:26 PM EDT	Special Weather Statement	FFC	Bleckley	49 min
Apr 5, 3:57 PM EDT	Special Weather Statement	FFC	Catoosa, Walker	33 min
Apr 5, 4:14 PM EDT	Special Weather Statement	FFC	Stewart	61 min
Apr 5, 4:20 PM EDT	Special Weather Statement	FFC	Toombs	25 min
Apr 5, 4:40 PM EDT	Special Weather Statement	FFC	Sumter, Webster	65 min
Apr 5, 4:51 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Jefferson, Johnson, Laurens, Treutlen, Washington and 1 more	54 min
Apr 5, 5:44 PM EDT	Special Weather Statement	FFC	Sumter	61 min
Apr 5, 6:26 PM EDT	Special Weather Statement	FFC	Crisp	64 min
Apr 5, 7:03 PM EDT	Special Weather Statement	FFC	Catoosa	27 min
Apr 5, 7:33 PM EDT	Special Weather Statement	FFC	Dade	42 min

Nearby

Special Weather Statements in Georgia, 2012 Every special weather statement 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.