Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 36, NWS Atlanta, GA

April 9, 2021Murray County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 9, 2021, 5:12 PM EDT for Murray County, Georgia. It was in force for 14 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: Apr 9, 2021, 5:12 PM EDT (21:12 UTC)
Expired: Apr 9, 2021, 5:26 PM EDT
In force: 14 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Murray County, GA

The radar

The Northeast Alabama radar (KHTX), 122 km from the middle of the area, began a volume at 21:15 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 160 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: 503 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 908 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

714 
WUUS52 KFFC 092112
SVRFFC
GAC213-092145-
/O.NEW.KFFC.SV.W.0036.210409T2112Z-210409T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
512 PM EDT Fri Apr 9 2021

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Murray County in northwestern Georgia...

* Until 545 PM EDT.

* At 511 PM EDT, a severe thunderstorm was located over North Georgia
  Speedway, or near Chatsworth, moving northeast at 25 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Chatsworth, Eton, Crandall, Conasauga Lake, Sumac, Ramhurst, Fort
  Mountain State Park and North Georgia Speedway.

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 3491 8464 3486 8462 3482 8458 3478 8464
      3473 8466 3468 8466 3463 8483 3469 8488
      3472 8486 3473 8487 3474 8485 3478 8488
      3480 8484 3481 8486 3482 8486 3492 8477
      3493 8468
TIME...MOT...LOC 2111Z 221DEG 21KT 3471 8481 

HAIL...1.00IN
WIND...60MPH
 
$$

1 follow-up statement

389 
WWUS52 KFFC 092126
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
526 PM EDT Fri Apr 9 2021

GAC213-092136-
/O.CAN.KFFC.SV.W.0036.000000T0000Z-210409T2145Z/
Murray GA-
526 PM EDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR MURRAY COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3491 8464 3486 8462 3482 8458 3478 8464
      3473 8466 3468 8466 3463 8483 3469 8488
      3472 8486 3473 8487 3474 8485 3478 8488
      3480 8484 3481 8486 3482 8486 3492 8477
      3493 8468
TIME...MOT...LOC 2124Z 221DEG 21KT 3478 8474 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 9:11 PM EDT	Special Weather Statement	FFC	White	34 min
Apr 9, 9:11 AM EDT	Special Weather Statement	FFC	Stewart	34 min
Apr 9, 9:44 AM EDT	Special Weather Statement	FFC	Stewart	46 min
Apr 9, 3:44 PM EDT	Special Weather Statement	FFC	Chattooga	31 min
Apr 9, 3:57 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Walker	33 min
Apr 9, 4:35 PM EDT	Special Weather Statement	FFC	Catoosa, Walker	25 min
Apr 9, 4:37 PM EDT	Special Weather Statement	FFC	Gordon	38 min
Apr 9, 4:51 PM EDT	Severe Thunderstorm Warning	FFC	Murray, Whitfield	24 min
Apr 9, 5:20 PM EDT	Special Weather Statement	FFC	Catoosa	25 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.