Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 118, NWS Atlanta, GA

July 30, 2021Gilmer County, Gordon County, Murray County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 30, 2021, 5:15 PM EDT for Gilmer County, Gordon County, Murray 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, 5:15 PM EDT (21:15 UTC)
Expired: Jul 30, 2021, 5:45 PM EDT
In force: 30 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Gilmer County, GA, Gordon County, GA, Murray County, GA

The radar

The Northeast Alabama radar (KHTX), 123 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, 9.3 hours before the alert went out and 144 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.

576 
WUUS52 KFFC 302115
SVRFFC
GAC123-129-213-302145-
/O.NEW.KFFC.SV.W.0118.210730T2115Z-210730T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
515 PM EDT Fri Jul 30 2021

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southwestern Gilmer County in north central Georgia...
  Southern Murray County in northwestern Georgia...
  Northeastern Gordon County in northwestern Georgia...

* Until 545 PM EDT.

* At 515 PM EDT, a severe thunderstorm was located over Ramhurst, or
  near Chatsworth, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Chatsworth, Carters, Tails Creek, Ramhurst, Oakman, Fort Mountain
  State Park, Redbud, Nickelsville, North Georgia Speedway, Audubon
  and Roundtop.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

If you see wind damage...hail or flooding...wait until the storm has
passed...and then call the National Weather Service toll free
at 1 8 6 6 7 6 3 4 4 6 6 or tweet us your report at NWSATLANTA.

&&

LAT...LON 3461 8449 3455 8463 3455 8465 3454 8465
      3447 8481 3468 8494 3468 8491 3466 8489
      3468 8489 3470 8492 3470 8489 3471 8488
      3471 8487 3473 8486 3480 8467
TIME...MOT...LOC 2115Z 327DEG 16KT 3468 8477 

HAIL...0.75IN
WIND...60MPH
 
$$

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, 4:45 PM EDT	Special Weather Statement	FFC	Cherokee	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

Severe Thunderstorm Warnings in Georgia, 2021 Every severe thunderstorm warning 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.