Alert archive / Georgia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 34, NWS Atlanta, GA

April 15, 2018Emanuel County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 15, 2018, 12:10 PM EDT for Emanuel County, Georgia. It was in force for 50 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: Apr 15, 2018, 12:10 PM EDT (16:10 UTC)
Expired: Apr 15, 2018, 1:00 PM EDT
In force: 50 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Emanuel County, GA

The radar

The Charleston,SC radar (KCLX), 109 km from the middle of the area, began a volume at 16:11 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 15, 10:12 AM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 4.2 hours before the alert went out and 209 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: 844 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

As transmitted.

701 
WUUS52 KFFC 151610
SVRFFC
GAC107-151700-
/O.NEW.KFFC.SV.W.0034.180415T1610Z-180415T1700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
1210 PM EDT SUN APR 15 2018

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Emanuel County in east central Georgia...

* Until 100 PM EDT

* At 1210 PM EDT, severe thunderstorms were located along a line
  extending from Swainsboro to near Aline to near Plant Hatch, moving
  northeast at 40 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Swainsboro, Twin City, Stillmore, Oak Park, Garfield, Nunez, Modoc,
  Canoochee, Lexsy and George L Smith State Park.

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.

&&

A tornado watch remains in effect until 600 PM EDT for southeastern
and east central Georgia.

LAT...LON 3254 8203 3256 8208 3252 8215 3248 8218
      3243 8219 3235 8225 3232 8224 3229 8228
      3244 8238 3246 8241 3258 8243 3281 8219
      3282 8215 3266 8208 3260 8200
TIME...MOT...LOC 1610Z 228DEG 33KT 3257 8233 3236 8222 3196 8229 

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 8:29 PM EDT	Special Weather Statement	FFC	Floyd, Polk	46 min
Apr 14, 9:02 PM EDT	Special Weather Statement	FFC	Haralson	13 min
Apr 14, 9:15 PM EDT	Special Weather Statement	FFC	Chattooga, Floyd, Polk	30 min
Apr 14, 9:45 PM EDT	Special Weather Statement	FFC	Catoosa, Whitfield	30 min
Apr 14, 9:49 PM EDT	Special Weather Statement	FFC	Gordon, Murray, Whitfield	26 min
Apr 15, 5:22 AM EDT	River Flood Warning	FFC	Dade	25 hr
Apr 15, 9:08 AM EDT	Special Weather Statement	FFC	Crisp, Dooly	37 min
Apr 15, 9:47 AM EDT	Special Weather Statement	FFC	Bleckley, Crisp, Dooly, Houston, Macon, Pulaski and 1 more	28 min
Apr 15, 9:51 AM EDT	Special Weather Statement	FFC	Schley, Sumter	24 min
Apr 15, 10:18 AM EDT	Special Weather Statement	FFC	Dooly, Houston, Pulaski	42 min
Apr 15, 10:26 AM EDT	Severe Thunderstorm Warning	FFC	Dooly, Houston, Macon, Peach	26 min
Apr 15, 10:34 AM EDT	Special Weather Statement	FFC	Telfair	26 min
Apr 15, 11:02 AM EDT	Special Weather Statement	FFC	Jones, Twiggs	43 min
Apr 15, 11:05 AM EDT	Special Weather Statement	FFC	Montgomery, Wheeler	25 min
Apr 15, 11:18 AM EDT	Severe Thunderstorm Warning	FFC	Montgomery, Telfair, Toombs, Wheeler	42 min
Apr 15, 11:51 AM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Montgomery, Toombs, Treutlen	39 min
Apr 15, 2:34 PM EDT	Special Weather Statement	FFC	Newton	26 min
Apr 15, 3:40 PM EDT	Special Weather Statement	FFC	Banks, Jackson	35 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2018 Every severe thunderstorm warning in 2018

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.