Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 88, NWS Atlanta, GA

May 11, 2021Jasper County, Jones County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 11, 2021, 4:45 PM EDT for Jasper County, Jones County, Georgia. It was in force for 23 min. 1 report 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: May 11, 2021, 4:45 PM EDT (20:45 UTC)
Expired: May 11, 2021, 5:08 PM EDT
In force: 23 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jasper County, GA, Jones County, GA

The radar

The Robins AFB radar (KJGX), 59 km from the middle of the area, began a volume at 20:45 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
May 11, 4:45 PM EDT	TSTM WND DMG	4 Ssw Mcelheneys Crossr, GA	REPORT OF A TREE BLOWN DOWN ACROSS HWY 83, IN SOUTHWESTERN JASPER COUNTY

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, 8.8 hours before the alert went out and 80 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: 46 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 774 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

244 
WUUS52 KFFC 112045
SVRFFC
GAC159-169-112130-
/O.NEW.KFFC.SV.W.0088.210511T2045Z-210511T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
445 PM EDT Tue May 11 2021

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northwestern Jones County in central Georgia...
  Southern Jasper County in central Georgia...

* Until 530 PM EDT.

* At 445 PM EDT, a severe thunderstorm was located near Juliette, or
  11 miles south of Monticello, moving east at 20 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...
  Gray, Round Oak, Bradley, Wayside and Hillsboro. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

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 3311 8380 3313 8382 3316 8382 3322 8379
      3317 8352 3309 8347 3301 8354
TIME...MOT...LOC 2045Z 284DEG 17KT 3315 8376 

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

1 follow-up statement

399 
WWUS52 KFFC 112108
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
508 PM EDT Tue May 11 2021

GAC159-169-112118-
/O.CAN.KFFC.SV.W.0088.000000T0000Z-210511T2130Z/
Jones GA-Jasper GA-
508 PM EDT Tue May 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN JONES AND
SOUTHERN JASPER COUNTIES 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 and
heavy rain are still possible with this thunderstorm.

LAT...LON 3311 8380 3313 8382 3316 8382 3322 8379
      3317 8352 3309 8347 3301 8354
TIME...MOT...LOC 2104Z 284DEG 17KT 3312 8363 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 3:16 PM EDT	Special Weather Statement	FFC	Spalding	29 min
May 11, 3:34 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Henry, Spalding	26 min
May 11, 4:31 PM EDT	Special Weather Statement	FFC	Baldwin	29 min
May 11, 4:34 PM EDT	Special Weather Statement	FFC	Jasper	26 min
May 11, 4:40 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Hancock, Putnam	39 min
May 11, 4:49 PM EDT	Special Weather Statement	FFC	Jefferson	26 min
May 11, 5:53 PM EDT	Special Weather Statement	FFC	Harris	37 min
May 11, 6:22 PM EDT	Special Weather Statement	FFC	Upson	23 min
May 11, 7:22 PM EDT	Special Weather Statement	FFC	Wilkinson	23 min
May 11, 7:48 PM EDT	Special Weather Statement	FFC	Twiggs	27 min
May 11, 7:59 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Twiggs	46 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.