Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

July 20, 2011Jasper County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 20, 2011, 5:13 PM EDT for Jasper County, Georgia. It was in force for 32 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: Jul 20, 2011, 5:13 PM EDT (21:13 UTC)
Expired: Jul 20, 2011, 5:45 PM EDT
In force: 32 min
Issued by: NWS Atlanta, GA

County Jasper County, GA

The radar

The Atlanta radar (KFFC), 74 km from the middle of the area, began a volume at 21:16 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, 9.2 hours before the alert went out and 68 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: 2211 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 771 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 56 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.

037 
WWUS82 KFFC 202113
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
513 PM EDT WED JUL 20 2011

GAZ059-202145-
513 PM EDT WED JUL 20 2011

...SIGNIFICANT WEATHER ADVISORY FOR EXCESSIVE LIGHTNING IN JASPER
COUNTY UNTIL 545 PM EDT...

AT 512 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER MONTICELLO...MOVING WEST AT 10 MPH.

RUNOFF FROM THESE STORMS WILL CAUSE MINOR FLOODING OF SMALL CREEKS
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES ACROSS
JASPER COUNTY...INCLUDING AREAS AROUND PIEDMONT...HILLSBORO...
ADGATEVILLE...MONTICELLO...CALVIN...MCELHENEYS CROSSROADS AND TURTLE
COVE. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF
CREEKS AND STREAMS ARE SUBJECT TO MINOR FLOODING.

&&

LAT...LON 3317 8360 3319 8381 3320 8383 3321 8383
      3325 8381 3327 8383 3333 8384 3334 8386
      3337 8386 3340 8383 3341 8385 3342 8380
      3335 8355
TIME...MOT...LOC 2113Z 102DEG 10KT 3328 8368

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 1:12 PM EDT	Special Weather Statement	FFC	Coweta	33 min
Jul 20, 1:22 PM EDT	Special Weather Statement	FFC	Cherokee	23 min
Jul 20, 1:38 PM EDT	Special Weather Statement	FFC	Coweta	37 min
Jul 20, 1:47 PM EDT	Special Weather Statement	FFC	Cherokee	43 min
Jul 20, 2:22 PM EDT	Special Weather Statement	FFC	Douglas	38 min
Jul 20, 2:34 PM EDT	Special Weather Statement	FFC	Jackson	26 min
Jul 20, 2:43 PM EDT	Special Weather Statement	FFC	Pickens	32 min
Jul 20, 2:52 PM EDT	Special Weather Statement	FFC	Carroll	23 min
Jul 20, 2:54 PM EDT	Special Weather Statement	FFC	Baldwin	36 min
Jul 20, 3:10 PM EDT	Special Weather Statement	FFC	Paulding	50 min
Jul 20, 3:18 PM EDT	Special Weather Statement	FFC	Pickens	27 min
Jul 20, 3:26 PM EDT	Special Weather Statement	FFC	Carroll	49 min
Jul 20, 3:27 PM EDT	Special Weather Statement	FFC	Douglas, Fulton	48 min
Jul 20, 3:57 PM EDT	Special Weather Statement	FFC	Clayton, Douglas, Fulton	48 min
Jul 20, 4:00 PM EDT	Special Weather Statement	FFC	Floyd, Paulding, Polk	45 min
Jul 20, 4:10 PM EDT	Special Weather Statement	FFC	Carroll	35 min
Jul 20, 4:14 PM EDT	Special Weather Statement	FFC	Twiggs, Wilkinson	46 min
Jul 20, 4:28 PM EDT	Special Weather Statement	FFC	Jones	32 min
Jul 20, 4:30 PM EDT	Special Weather Statement	FFC	Clarke, Madison, Oglethorpe	60 min
Jul 20, 4:31 PM EDT	Special Weather Statement	FFC	Walton	29 min
Jul 20, 4:35 PM EDT	Severe Thunderstorm Warning	FFC	Jones	25 min
Jul 20, 4:44 PM EDT	Special Weather Statement	FFC	Bartow, Floyd, Haralson, Paulding, Polk	46 min
Jul 20, 5:38 PM EDT	Special Weather Statement	FFC	Newton	37 min
Jul 20, 7:09 PM EDT	Special Weather Statement	FFC	Dawson, Pickens	36 min
Jul 20, 7:44 PM EDT	Special Weather Statement	FFC	Dawson, Forsyth	31 min
Jul 20, 7:45 PM EDT	Special Weather Statement	FFC	Gilmer	30 min

Nearby

Special Weather Statements in Georgia, 2011 Every special weather statement in 2011

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.