Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 239, NWS Atlanta, GA

June 17, 2017Emanuel County, Montgomery County, Treutlen County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 17, 2017, 7:32 PM EDT for Emanuel County, Montgomery County, Treutlen County, Georgia. It was in force for 43 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 17, 2017, 7:32 PM EDT (23:32 UTC)
Expired: Jun 17, 2017, 8:15 PM EDT
In force: 43 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Emanuel County, GA, Montgomery County, GA, Treutlen County, GA

The radar

The Robins AFB radar (KJGX), 79 km from the middle of the area, began a volume at 23:31 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, 11.5 hours before the alert went out and 210 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: 242 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 886 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

709 
WUUS52 KFFC 172332
SVRFFC
GAC107-209-283-180015-
/O.NEW.KFFC.SV.W.0239.170617T2332Z-170618T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
732 PM EDT SAT JUN 17 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southwestern Emanuel County in east central Georgia...
  Treutlen County in east central Georgia...
  Northwestern Montgomery County in central Georgia...

* Until 815 PM EDT

* At 731 PM EDT, a severe thunderstorm was located near Barnhill, or
  near Soperton, moving northeast 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...
  Soperton, Adrian, Tarrytown, Lothair, Covena, Orianna, Blackville,
  Norristown, Barnhill, Zaidee, Gillis Springs and Kibbee.

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 3243 8234 3223 8259 3225 8265 3226 8264
      3229 8265 3230 8265 3230 8271 3252 8263
      3252 8260 3253 8259 3254 8257 3253 8248
TIME...MOT...LOC 2331Z 207DEG 16KT 3231 8262 

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 3:12 PM EDT	Special Weather Statement	FFC	Bleckley	33 min
Jun 17, 3:36 PM EDT	Special Weather Statement	FFC	Laurens	39 min
Jun 17, 4:00 PM EDT	Severe Thunderstorm Warning	FFC	Laurens	45 min
Jun 17, 4:24 PM EDT	Special Weather Statement	FFC	Troup	36 min
Jun 17, 4:47 PM EDT	Special Weather Statement	FFC	Putnam	28 min
Jun 17, 6:16 PM EDT	Special Weather Statement	FFC	Jones	29 min
Jun 17, 6:22 PM EDT	Special Weather Statement	FFC	Gwinnett	23 min
Jun 17, 7:18 PM EDT	Special Weather Statement	FFC	Carroll, Douglas	42 min
Jun 17, 7:24 PM EDT	Special Weather Statement	FFC	Hall	36 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017 Every severe thunderstorm warning in 2017

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.