Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 343, NWS Atlanta, GA

October 8, 2017Washington County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Oct 8, 2017, 3:03 PM EDT for Washington County, Georgia. It was in force for 27 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: Oct 8, 2017, 3:03 PM EDT (19:03 UTC)
Expired: Oct 8, 2017, 3:30 PM EDT
In force: 27 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Washington County, GA

The radar

The Robins AFB radar (KJGX), 58 km from the middle of the area, began a volume at 19:03 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, 7.1 hours before the alert went out and 161 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: 333 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 592 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 242 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted.

943 
WUUS52 KFFC 081903
SVRFFC
GAC303-081930-
/O.NEW.KFFC.SV.W.0343.171008T1903Z-171008T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
303 PM EDT SUN OCT 8 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Central Washington County in east central Georgia...

* Until 330 PM EDT

* At 302 PM EDT, a severe thunderstorm was located near Tennille, or
  near Sandersville, moving north at 30 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Sandersville, Tennille, Oconee, Warthen and Downs. 

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 3282 8285 3286 8296 3306 8295 3321 8278
      3302 8264
TIME...MOT...LOC 1902Z 198DEG 25KT 3294 8288 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

1 follow-up statement

536 
WWUS52 KFFC 081922
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
322 PM EDT SUN OCT 8 2017

GAC303-081932-
/O.EXP.KFFC.SV.W.0343.000000T0000Z-171008T1930Z/
Washington GA-
322 PM EDT SUN OCT 8 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WASHINGTON COUNTY WILL
EXPIRE AT 330 PM EDT...
                
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 will be allowed to expire.  However gusty winds
and heavy rain are still possible with this thunderstorm.

LAT...LON 3282 8285 3286 8296 3306 8295 3321 8278
      3302 8264
TIME...MOT...LOC 1922Z 198DEG 25KT 3307 8283 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 10:31 AM EDT	Special Weather Statement	FFC	Cobb, Fulton	44 min
Oct 8, 11:05 AM EDT	Special Weather Statement	FFC	Cherokee, Pickens	40 min
Oct 8, 11:08 AM EDT	Wind Advisory	FFC	Bartow, Catoosa, Chattooga, Cherokee, Dade, Dawson and 13 more	10 hr
Oct 8, 11:35 AM EDT	Special Weather Statement	FFC	Houston, Pulaski, Wilcox	40 min
Oct 8, 11:44 AM EDT	Special Weather Statement	FFC	Gilmer, Murray, Pickens	46 min
Oct 8, 11:53 AM EDT	Special Weather Statement	FFC	Dawson, Forsyth, Gwinnett, Hall, Lumpkin	52 min
Oct 8, 12:22 PM EDT	Special Weather Statement	FFC	Bibb, Bleckley, Houston, Pulaski, Twiggs, Wilcox	38 min
Oct 8, 12:26 PM EDT	Special Weather Statement	FFC	Fannin, Hall, Lumpkin, Union	49 min
Oct 8, 1:01 PM EDT	Special Weather Statement	FFC	Bleckley	44 min
Oct 8, 1:18 PM EDT	Special Weather Statement	FFC	Hall, Towns, White	42 min
Oct 8, 1:29 PM EDT	Special Weather Statement	FFC	Bleckley	16 min
Oct 8, 1:34 PM EDT	Special Weather Statement	FFC	Wilkinson	26 min
Oct 8, 1:46 PM EDT	Special Weather Statement	FFC	Wilkinson	29 min
Oct 8, 1:50 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin	25 min
Oct 8, 2:15 PM EDT	Special Weather Statement	FFC	Wilkinson	30 min
Oct 8, 2:23 PM EDT	Special Weather Statement	FFC	Clarke, Greene, Oconee	22 min
Oct 8, 2:54 PM EDT	Special Weather Statement	FFC	Washington	36 min
Oct 8, 3:28 PM EDT	Special Weather Statement	FFC	Glascock, Johnson, Warren	32 min
Oct 8, 3:59 PM EDT	Special Weather Statement	FFC	Glascock, Jefferson, Warren, Wilkes	31 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.