Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 339, NWS Atlanta, GA

September 22, 2017Macon County, Taylor County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 22, 2017, 7:34 PM EDT for Macon County, Taylor County, Georgia. It was in force for 26 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: Sep 22, 2017, 7:34 PM EDT (23:34 UTC)
Expired: Sep 22, 2017, 8:00 PM EDT
In force: 26 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Macon County, GA, Taylor County, GA

The radar

The Robins AFB radar (KJGX), 96 km from the middle of the area, began a volume at 23:35 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, 11.6 hours before the alert went out and 103 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: 697 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1144 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

694 
WUUS52 KFFC 222334
SVRFFC
GAC193-269-230000-
/O.NEW.KFFC.SV.W.0339.170922T2334Z-170923T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
734 PM EDT FRI SEP 22 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northwestern Macon County in west central Georgia...
  Southwestern Taylor County in west central Georgia...

* Until 800 PM EDT

* At 733 PM EDT, a severe thunderstorm was located near Rupert, or
  near Butler, moving west at 40 mph.

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

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Butler, Ideal, Rupert, Charing, Garden Valley and Mauk. 

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 3237 8425 3237 8432 3240 8432 3240 8434
      3238 8435 3240 8436 3243 8436 3242 8439
      3245 8441 3248 8441 3249 8443 3252 8443
      3254 8445 3256 8445 3256 8441 3258 8441
      3260 8416 3242 8408 3234 8426
TIME...MOT...LOC 2333Z 070DEG 36KT 3248 8426 

HAIL...0.88IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 21, 8:11 PM EDT	Special Weather Statement	FFC	Crisp, Dooly, Pulaski	34 min
Sep 21, 9:12 PM EDT	Special Weather Statement	FFC	DeKalb	33 min
Sep 22, 2:34 PM EDT	Special Weather Statement	FFC	Laurens	26 min
Sep 22, 2:42 PM EDT	Special Weather Statement	FFC	Johnson	33 min
Sep 22, 3:08 PM EDT	Special Weather Statement	FFC	Jefferson	37 min
Sep 22, 3:16 PM EDT	Special Weather Statement	FFC	Bleckley	29 min
Sep 22, 3:17 PM EDT	Special Weather Statement	FFC	Johnson	43 min
Sep 22, 3:28 PM EDT	Special Weather Statement	FFC	Emanuel	47 min
Sep 22, 3:48 PM EDT	Special Weather Statement	FFC	Bleckley	42 min
Sep 22, 4:50 PM EDT	Special Weather Statement	FFC	Pulaski	25 min
Sep 22, 4:51 PM EDT	Special Weather Statement	FFC	Pulaski	24 min
Sep 22, 4:55 PM EDT	Special Weather Statement	FFC	Emanuel, Treutlen	35 min
Sep 22, 4:59 PM EDT	Special Weather Statement	FFC	Jones, Monroe	31 min
Sep 22, 5:29 PM EDT	Special Weather Statement	FFC	Lamar, Monroe	31 min
Sep 22, 5:43 PM EDT	Severe Thunderstorm Warning	FFC	Meriwether, Pike, Upson	47 min
Sep 22, 5:48 PM EDT	Special Weather Statement	FFC	Bibb	27 min
Sep 22, 5:49 PM EDT	Special Weather Statement	FFC	Wilcox	26 min
Sep 22, 6:01 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Twiggs	29 min
Sep 22, 6:14 PM EDT	Severe Thunderstorm Warning	FFC	Talbot, Upson	31 min
Sep 22, 6:20 PM EDT	Special Weather Statement	FFC	Telfair	25 min
Sep 22, 6:28 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Crawford, Houston, Peach, Twiggs	32 min
Sep 22, 6:32 PM EDT	Special Weather Statement	FFC	Meriwether, Troup	28 min
Sep 22, 6:39 PM EDT	Special Weather Statement	FFC	Talbot	36 min
Sep 22, 6:57 PM EDT	Severe Thunderstorm Warning	FFC	Crawford, Macon, Peach, Taylor	33 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.