Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

June 20, 2021Chattahoochee County, Stewart County, Georgia

NWS Atlanta, GA issued this special weather statement at Jun 20, 2021, 2:36 AM EDT for Chattahoochee County, Stewart County, Georgia. It was in force for 24 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: Jun 20, 2021, 2:36 AM EDT (06:36 UTC)
Expired: Jun 20, 2021, 3:00 AM EDT
In force: 24 min
Issued by: NWS Atlanta, GA

Counties Chattahoochee County, GA, Stewart County, GA

The radar

The Maxwell AFB radar (KMXX), 87 km from the middle of the area, began a volume at 06:37 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 00:00Z, 6.6 hours before the alert went out and 139 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: 252 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 340 m²/s²
0-3 km storm-relative helicity: 516 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted.

103 
WWUS82 KFFC 200636
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
236 AM EDT Sun Jun 20 2021
 
GAZ090-091-102-200700-
Chattahoochee GA-Stewart GA-Marion GA-
236 AM EDT Sun Jun 20 2021

...SIGNIFICANT WEATHER ADVISORY FOR CHATTAHOOCHEE...STEWART AND
NORTHWESTERN MARION COUNTIES UNTIL 300 AM EDT...

At 235 AM EDT...National Weather Service doppler radar indicated a
strong storm within a tropical rain band along a line extending from
near Custer Road Terrace to near Omaha to near Lakepoint Resort State
Park...and moving northeast at 35 mph.

  HAZARD...Enhanced risk of a brief tornado.

  IMPACT...Storms embedded within a tropical rainband have exhibited 
           localized rotation. A brief tornado could quickly form.

Some locations in the path of these storms include
Lumpkin, Cusseta, Fort Benning/lawson Army Air Fld, Omaha, Charles,
Christopher, Jamestown/south Fort Benning, Renfroe, Louvale, Manta
and Providence Canyon State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately.

LAT...LON 3199 8507 3202 8505 3203 8506 3209 8504
      3213 8506 3218 8501 3220 8496 3221 8498
      3222 8493 3224 8491 3225 8492 3226 8489
      3230 8494 3233 8501 3237 8498 3247 8459
      3201 8481
TIME...MOT...LOC 0635Z 244DEG 28KT 3235 8490 3215 8506 3203 8516 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 9:00 PM EDT	Special Weather Statement	FFC	Harris	30 min
Jun 19, 9:05 PM EDT	Special Weather Statement	FFC	Monroe	25 min
Jun 19, 9:21 PM EDT	Special Weather Statement	FFC	Treutlen	24 min
Jun 19, 9:32 PM EDT	Tornado Warning	FFC	Emanuel, Johnson, Laurens, Treutlen	28 min
Jun 19, 10:10 PM EDT	Special Weather Statement	FFC	Marion	35 min
Jun 19, 10:22 PM EDT	Special Weather Statement	FFC	Chattooga	38 min
Jun 19, 10:53 PM EDT	Special Weather Statement	FFC	Jefferson	37 min
Jun 19, 10:57 PM EDT	Special Weather Statement	FFC	Crawford, Taylor	48 min
Jun 19, 11:15 PM EDT	Flash Flood Warning	FFC	Chattooga	10 hr
Jun 19, 11:47 PM EDT	Special Weather Statement	FFC	Macon, Peach	28 min
Jun 20, 2:00 AM EDT	Special Weather Statement	FFC	Harris, Muscogee	30 min
Jun 20, 3:02 AM EDT	Special Weather Statement	FFC	Chattahoochee, Marion, Stewart	28 min
Jun 20, 3:22 AM EDT	Tornado Warning	FFC	Chattahoochee, Marion, Schley, Taylor	23 min
Jun 20, 3:33 AM EDT	Special Weather Statement	FFC	Stewart	27 min
Jun 20, 3:46 AM EDT	Special Weather Statement	FFC	Taylor	29 min
Jun 20, 4:02 AM EDT	Special Weather Statement	FFC	Marion, Schley, Stewart, Webster	28 min
Jun 20, 4:12 AM EDT	Tornado Warning	FFC	Macon, Marion, Schley, Sumter, Webster	33 min
Jun 20, 5:36 AM EDT	Special Weather Statement	FFC	Dooly, Sumter	24 min
Jun 20, 6:39 AM EDT	Special Weather Statement	FFC	Hancock, Warren	36 min

Nearby

Special Weather Statements in Georgia, 2021 Every special weather statement in 2021

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.