Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

August 7, 2012Emanuel County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 7, 2012, 5:20 PM EDT for Emanuel 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: Aug 7, 2012, 5:20 PM EDT (21:20 UTC)
Expired: Aug 7, 2012, 5:45 PM EDT
In force: 25 min
Issued by: NWS Atlanta, GA

County Emanuel County, GA

The radar

The Robins AFB radar (KJGX), 98 km from the middle of the area, began a volume at 21:21 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

Charleston AFB, SC (KCHS), launched 12:00Z, 9.3 hours before the alert went out and 220 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: 2260 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 574 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 63 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.

344 
WWUS82 KFFC 072120
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
520 PM EDT TUE AUG 7 2012

GAZ086-072145-
520 PM EDT TUE AUG 7 2012

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 40 MPH WINDS
IN EMANUEL COUNTY UNTIL 545 PM EDT...

AT 519 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR DELLWOOD...MOVING NORTHEAST AT 5 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 40 MPH AS IT MOVES ACROSS
EMANUEL COUNTY THROUGH 545 PM EDT. SOME LOCATIONS IN THE PATH OF THIS
STORM INCLUDE NORRISTOWN JUNCTION...NORRISTOWN...MODOC...LEXSY...
DELLWOOD...COVENA...NUNEZ...SWAINSBORO...TWIN CITY...THREE POINTS...
COLEMANS LAKE...CANOOCHEE...BLUNDALE...SUMMERTOWN AND GARFIELD. HEAVY
DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADWAYS.

THESE WIND GUSTS MAY PRODUCE MINOR DAMAGE TO TREE LIMBS AND BLOW
LIGHT...UNSECURED OBJECTS AROUND.

&&

LAT...LON 3254 8203 3256 8208 3252 8215 3236 8225
      3232 8224 3229 8235 3236 8241 3245 8240
      3250 8249 3251 8265 3253 8258 3258 8260
      3265 8247 3268 8250 3278 8240 3282 8241
      3284 8233 3282 8215 3266 8208 3260 8200
TIME...MOT...LOC 2121Z 216DEG 5KT 3269 8236

$$

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, 5:02 PM EDT	Severe Thunderstorm Warning	FFC	Montgomery, Wheeler	43 min
Aug 7, 5:09 PM EDT	Special Weather Statement	FFC	Wilkes	36 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

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.