Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

July 26, 2012Upson County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 26, 2012, 6:56 PM EDT for Upson County, Georgia. It was in force for 34 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: Jul 26, 2012, 6:56 PM EDT (22:56 UTC)
Expired: Jul 26, 2012, 7:30 PM EDT
In force: 34 min
Issued by: NWS Atlanta, GA

County Upson County, GA

The radar

The Atlanta radar (KFFC), 53 km from the middle of the area, began a volume at 22:58 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
Jul 26, 7:16 PM EDT	TSTM WND DMG	Sunnyside, GA	SEVERAL TREES WERE REPORTED DOWN IN WESTERN UPSON COUNTY. TIME IS BASED ON RADAR
Jul 26, 7:16 PM EDT	HAIL 0.75	Sunnyside, GA

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, 10.9 hours before the alert went out and 52 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: 1583 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1146 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -90 m²/s²
0-3 km storm-relative helicity: -45 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.

021 
WWUS82 KFFC 262256
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
656 PM EDT THU JUL 26 2012

GAZ069-079-262330-
656 PM EDT THU JUL 26 2012

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 45 MPH WINDS 
IN NORTHEAST TALBOT AND UPSON COUNTIES UNTIL 730 PM EDT...

AT 648 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER ROWLAND...MOVING NORTHEAST AT 5 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE PEA SIZED HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING AND WIND GUSTS TO 45 MPH AS IT MOVES ACROSS
NORTHEAST TALBOT AND UPSON COUNTIES THROUGH 730 PM EDT. SOME 
LOCATIONS IN THE PATH OF THIS STORM INCLUDE ROWLAND...BIG LAZER 
CREEK WMA...CREST...SUNNYSIDE...SPREWELL BLUFF STATE PARK... 
THOMASTON...REDBONE CROSSROADS...HANNAHS MILL...ATWATER...YATESVILLE 
AND THE ROCK. HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON 
ROADWAYS.

&&

LAT...LON 3288 8451 3299 8439 3299 8430 3300 8430
      3299 8429 3299 8416 3296 8412 3291 8412
      3274 8437 3287 8452
TIME...MOT...LOC 2255Z 226DEG 4KT 3287 8437

$$

16

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 4:14 AM EDT	Heat Advisory	FFC	Baldwin, Bibb, Bleckley, Chattahoochee, Clarke, Crawford and 43 more	17 hr
Jul 26, 4:18 PM EDT	Special Weather Statement	FFC	Treutlen	27 min
Jul 26, 4:55 PM EDT	Special Weather Statement	FFC	Webster	35 min
Jul 26, 5:20 PM EDT	Special Weather Statement	FFC	Crawford	25 min
Jul 26, 6:01 PM EDT	Special Weather Statement	FFC	Muscogee	29 min
Jul 26, 6:02 PM EDT	Special Weather Statement	FFC	Talbot	28 min
Jul 26, 6:11 PM EDT	Severe Thunderstorm Warning	FFC	Talbot, Taylor	34 min
Jul 26, 6:27 PM EDT	Special Weather Statement	FFC	Meriwether	33 min
Jul 26, 6:30 PM EDT	Special Weather Statement	FFC	Chattahoochee	30 min
Jul 26, 6:38 PM EDT	Severe Thunderstorm Warning	FFC	Taylor	52 min
Jul 26, 6:53 PM EDT	Special Weather Statement	FFC	Stewart	37 min
Jul 26, 7:12 PM EDT	Special Weather Statement	FFC	Bibb	33 min
Jul 26, 7:13 PM EDT	Special Weather Statement	FFC	Wilkinson	32 min
Jul 26, 7:29 PM EDT	Special Weather Statement	FFC	Monroe	31 min
Jul 26, 7:34 PM EDT	Special Weather Statement	FFC	Stewart	26 min
Jul 26, 7:46 PM EDT	Special Weather Statement	FFC	Marion	29 min
Jul 26, 7:53 PM EDT	Special Weather Statement	FFC	Bibb	37 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.