Alert archive / Georgia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 32, NWS Atlanta, GA

April 15, 20184 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 15, 2018, 11:18 AM EDT for 4 counties in Georgia. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 15, 2018, 11:18 AM EDT (15:18 UTC)
Expired: Apr 15, 2018, 12:00 PM EDT
In force: 42 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Montgomery County, GA, Telfair County, GA, Toombs County, GA, Wheeler County, GA

The radar

The Robins AFB radar (KJGX), 100 km from the middle of the area, began a volume at 15:18 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.

What was reported inside it

Time	Report	Where	Remark
Apr 15, 11:53 AM EDT	TSTM WND DMG	3 W Higgston, GA	TREE REPORTED DOWN ON RABBIT RUN RD. AT THE INTERSECTION WITH MORRIS RD. THE TREE ALSO BROUGHT DOWN POWER LINES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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

Jacksonville, FL (KJAX), launched 12:00Z, 3.3 hours before the alert went out and 192 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: 651 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

As transmitted.

821 
WUUS52 KFFC 151518
SVRFFC
GAC209-271-279-309-151600-
/O.NEW.KFFC.SV.W.0032.180415T1518Z-180415T1600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
1118 AM EDT SUN APR 15 2018

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Western Toombs County in southeastern Georgia...
  Southeastern Telfair County in central Georgia...
  Wheeler County in central Georgia...
  Montgomery County in central Georgia...

* Until noon EDT

* At 1117 AM EDT, severe thunderstorms were located along a line
  extending from near Horse Creek Wma to near Snipesville to Denton
  to near Nicholls, moving northeast at 50 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Lyons, Alamo, Mount Vernon, Vidalia, Lumber City, Glenwood, Uvalda,
  Ailey, Scotland, Higgston, Santa Claus, Alston, Tarrytown, Towns,
  Horse Creek Wma, Spring Hill, McNatt Falls, South Thompson, Cedar
  Crossing 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.

&&

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

LAT...LON 3179 8293 3231 8271 3229 8267 3231 8264
      3235 8241 3232 8236 3229 8235 3230 8226
      3223 8225 3195 8241 3197 8248 3197 8250
      3196 8248 3195 8249 3196 8257 3193 8259
      3192 8268 3185 8279 3184 8278 3178 8286
TIME...MOT...LOC 1517Z 211DEG 43KT 3178 8284 3180 8277 3179 8272 3170
8267 3156 8265

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

2 follow-up statements

775 
WWUS52 KFFC 151535
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
1135 AM EDT SUN APR 15 2018

GAC271-151544-
/O.CAN.KFFC.SV.W.0032.000000T0000Z-180415T1600Z/
Telfair GA-
1135 AM EDT SUN APR 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TELFAIR COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the area! 
Therefore, the warning has been cancelled.

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

LAT...LON 3196 8269 3201 8273 3205 8282 3231 8271
      3229 8267 3231 8264 3235 8241 3232 8236
      3229 8235 3230 8226 3223 8225 3196 8241
      3197 8248 3197 8250 3196 8248 3195 8249
      3196 8257 3193 8259 3192 8265
TIME...MOT...LOC 1534Z 211DEG 43KT 3196 8272 3198 8265 3197 8260 3188
8255 3174 8253

$$

GAC209-279-309-151600-
/O.CON.KFFC.SV.W.0032.000000T0000Z-180415T1600Z/
Toombs GA-Wheeler GA-Montgomery GA-
1135 AM EDT SUN APR 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON EDT FOR
WESTERN TOOMBS...WHEELER AND MONTGOMERY COUNTIES...

At 1134 AM EDT, severe thunderstorms were located along a line
extending from near Lumber City to near Jordan to near Charlotteville
to near Hazlehurst to 6 miles south of Graham, moving northeast at 50
mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Lyons, Alamo, Mount Vernon, Vidalia, Glenwood, Uvalda, Ailey,
Scotland, Higgston, Santa Claus, Alston, Tarrytown, Center, Spring
Hill, Landsburg, McNatt Falls, Kibbee, South Thompson, Grays Landing
and Rock Springs.

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 central,
southeastern and east central Georgia.

LAT...LON 3196 8269 3201 8273 3205 8282 3231 8271
      3229 8267 3231 8264 3235 8241 3232 8236
      3229 8235 3230 8226 3223 8225 3196 8241
      3197 8248 3197 8250 3196 8248 3195 8249
      3196 8257 3193 8259 3192 8265
TIME...MOT...LOC 1534Z 211DEG 43KT 3196 8272 3198 8265 3197 8260 3188
8255 3174 8253

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

179 
WWUS52 KFFC 151546
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
1146 AM EDT SUN APR 15 2018

GAC309-151556-
/O.CAN.KFFC.SV.W.0032.000000T0000Z-180415T1600Z/
Wheeler GA-
1146 AM EDT SUN APR 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR WHEELER COUNTY IS CANCELLED...

The storms which prompted the warning have moved out of the area! 
Therefore, the warning has been cancelled.

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

LAT...LON 3201 8259 3205 8261 3216 8261 3225 8265
      3226 8264 3229 8264 3230 8265 3231 8264
      3235 8241 3232 8236 3229 8235 3230 8226
      3223 8225 3196 8241 3197 8248 3197 8249
      3196 8248 3195 8249
TIME...MOT...LOC 1546Z 210DEG 43KT 3207 8264 3209 8257 3208 8252 3199
8247 3185 8245

$$

GAC209-279-151600-
/O.CON.KFFC.SV.W.0032.000000T0000Z-180415T1600Z/
Toombs GA-Montgomery GA-
1146 AM EDT SUN APR 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON EDT FOR
WESTERN TOOMBS AND MONTGOMERY COUNTIES...

At 1146 AM EDT, severe thunderstorms were located along a line
extending from near Jordan to near Uvalda to near Alston to McNatt
Falls to near Pine Grove, moving northeast at 50 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Lyons, Mount Vernon, Vidalia, Uvalda, Ailey, Higgston, Santa Claus,
Alston, Tarrytown, Center, McNatt Falls, Kibbee, South Thompson,
Grays Landing, Rock Springs, Cedar Crossing, Charlotteville and
Normantown.

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 central,
southeastern and east central Georgia.

LAT...LON 3201 8259 3205 8261 3216 8261 3225 8265
      3226 8264 3229 8264 3230 8265 3231 8264
      3235 8241 3232 8236 3229 8235 3230 8226
      3223 8225 3196 8241 3197 8248 3197 8249
      3196 8248 3195 8249
TIME...MOT...LOC 1546Z 210DEG 43KT 3207 8264 3209 8257 3208 8252 3199
8247 3185 8245

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, 11:51 AM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Montgomery, Toombs, Treutlen	39 min
Apr 15, 12:10 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel	50 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.