Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 330, NWS Atlanta, GA

September 21, 2017Telfair County, Wheeler County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 21, 2017, 5:41 PM EDT for Telfair County, Wheeler County, Georgia. It was in force for 34 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 21, 2017, 5:41 PM EDT (21:41 UTC)
Expired: Sep 21, 2017, 6:15 PM EDT
In force: 34 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Telfair County, GA, Wheeler County, GA

The radar

The Robins AFB radar (KJGX), 82 km from the middle of the area, began a volume at 21:41 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

Jacksonville, FL (KJAX), launched 12:00Z, 9.7 hours before the alert went out and 206 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: 790 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 944 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

705 
WUUS52 KFFC 212141
SVRFFC
GAC271-309-212215-
/O.NEW.KFFC.SV.W.0330.170921T2141Z-170921T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
541 PM EDT THU SEP 21 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northeastern Telfair County in central Georgia...
  Wheeler County in central Georgia...

* Until 615 PM EDT

* At 541 PM EDT, a severe thunderstorm was located over Alamo, moving
  south at 10 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...
  McRae, Alamo, Helena, Glenwood, Scotland, Towns, Spring Hill,
  Little Ocmulgee State Park and Jordan.

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 3204 8296 3220 8285 3222 8283 3218 8264
      3198 8263 3195 8284
TIME...MOT...LOC 2141Z 019DEG 9KT 3212 8278 

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
Sep 21, 4:43 PM EDT	Special Weather Statement	FFC	Montgomery	32 min
Sep 21, 4:56 PM EDT	Special Weather Statement	FFC	Banks	34 min
Sep 21, 5:16 PM EDT	Special Weather Statement	FFC	Montgomery, Wheeler	29 min
Sep 21, 5:27 PM EDT	Special Weather Statement	FFC	Laurens	33 min
Sep 21, 5:53 PM EDT	Special Weather Statement	FFC	Johnson	37 min
Sep 21, 5:56 PM EDT	Severe Thunderstorm Warning	FFC	Dodge, Telfair	34 min
Sep 21, 5:57 PM EDT	Special Weather Statement	FFC	Dodge	33 min
Sep 21, 6:09 PM EDT	Special Weather Statement	FFC	Dawson	36 min
Sep 21, 6:12 PM EDT	Special Weather Statement	FFC	Johnson	33 min
Sep 21, 6:27 PM EDT	Special Weather Statement	FFC	Johnson	33 min
Sep 21, 6:40 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Johnson	50 min
Sep 21, 6:42 PM EDT	Special Weather Statement	FFC	Pulaski	33 min
Sep 21, 6:59 PM EDT	Severe Thunderstorm Warning	FFC	Pulaski, Wilcox	31 min
Sep 21, 7:30 PM EDT	Special Weather Statement	FFC	Pulaski	30 min
Sep 21, 7:36 PM EDT	Special Weather Statement	FFC	Wilkinson	24 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.