Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

July 30, 2021Cherokee County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 30, 2021, 4:45 PM EDT for Cherokee County, Georgia. It was in force for 30 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 30, 2021, 4:45 PM EDT (20:45 UTC)
Expired: Jul 30, 2021, 5:15 PM EDT
In force: 30 min
Issued by: NWS Atlanta, GA
Wind: 40

County Cherokee County, GA

The radar

The Atlanta radar (KFFC), 102 km from the middle of the area, began a volume at 20:47 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, 8.8 hours before the alert went out and 101 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: 1065 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1141 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: -21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

944 
WWUS82 KFFC 302045
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
445 PM EDT Fri Jul 30 2021
 
GAZ020-021-302115-
Cherokee GA-Bartow GA-
445 PM EDT Fri Jul 30 2021

...SIGNIFICANT WEATHER ADVISORY FOR CHEROKEE AND NORTHEASTERN BARTOW
COUNTIES UNTIL 515 PM EDT...

At 445 PM EDT...a line of strong thunderstorms was along a line
extending from Pine Log to near Waleska...and moving southeast at 15
mph.

  HAZARD...Up to 40 mph wind...frequent cloud to ground lightning 
           and heavy rain.

  IMPACT...Expect minor damage to tree limbs and blowing around of 
           light...unsecured objects. Heavy rain may cause temporary 
           street flooding especially in poor drainage areas.

Some locations in the path of these storms include
Canton, Cartersville, Woodstock, Holly Springs, White, Waleska,
Buffington, Hickory Flat, Union Hill, Lake Arrowhead, Red Top
Mountain State Park, Folsom, Little River Landing, George Washington
Carver St Pk, Lebanon, Salacoa Valley, Pine Log, Sutallee, Funkhouser
and Bridgemill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3438 8458 3438 8446 3419 8426 3419 8433
      3417 8435 3415 8436 3413 8470 3440 8488
      3441 8458
TIME...MOT...LOC 2045Z 320DEG 14KT 3435 8474 3432 8451 

WIND...40MPH

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 2:50 PM EDT	Heat Advisory	FFC	Baldwin, Barrow, Bibb, Bleckley, Butts, Chattahoochee and 61 more	29 hr
Jul 30, 4:32 PM EDT	Special Weather Statement	FFC	Catoosa, Murray, Whitfield	28 min
Jul 30, 4:39 PM EDT	Severe Thunderstorm Warning	FFC	Murray, Whitfield	36 min
Jul 30, 5:15 PM EDT	Severe Thunderstorm Warning	FFC	Gilmer, Gordon, Murray	30 min
Jul 30, 5:18 PM EDT	Special Weather Statement	FFC	Cherokee	27 min
Jul 30, 6:10 PM EDT	Special Weather Statement	FFC	Dawson, Forsyth	35 min
Jul 30, 6:20 PM EDT	Special Weather Statement	FFC	Bartow	25 min
Jul 30, 6:49 PM EDT	Special Weather Statement	FFC	Bartow	26 min
Jul 30, 7:02 PM EDT	Special Weather Statement	FFC	Cobb, Fulton	28 min
Jul 30, 7:17 PM EDT	Special Weather Statement	FFC	Bartow, Paulding	28 min
Jul 30, 7:40 PM EDT	Special Weather Statement	FFC	Dade	35 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.