Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 322, NWS Atlanta, GA

September 1, 2017Emanuel County, Montgomery County, Toombs County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 1, 2017, 1:10 PM EDT for Emanuel County, Montgomery County, Toombs 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
Sep 1, 2017, 1:10 PM EDT (17:10 UTC)
Expired
Sep 1, 2017, 2:00 PM EDT
In force
50 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Emanuel County, GA, Montgomery County, GA, Toombs County, GA

The radar

The Robins AFB radar (KJGX), 110 km from the middle of the area, began a volume at 17:13 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, 5.2 hours before the alert went out and 201 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-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2017-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1012 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2017-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1012 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
971 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted.

321 
WUUS52 KFFC 011710
SVRFFC
GAC107-209-279-011800-
/O.NEW.KFFC.SV.W.0322.170901T1710Z-170901T1800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
110 PM EDT FRI SEP 1 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northern Toombs County in southeastern Georgia...
  South central Emanuel County in east central Georgia...
  Central Montgomery County in central Georgia...

* Until 200 PM EDT

* At 110 PM EDT, a severe thunderstorm was located near Higgston, or
  near Mount Vernon, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Lyons, Mount Vernon, Vidalia, Oak Park, Ailey, Higgston, Santa
  Claus, Alston, Center, Ohoopee, Ponderosa, South Thompson 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.

&&

LAT...LON 3205 8252 3219 8261 3243 8219 3235 8225
      3235 8224 3230 8223 3228 8223 3224 8221
      3223 8221 3218 8219 3216 8218
TIME...MOT...LOC 1710Z 240DEG 28KT 3216 8248 

HAIL...<.75IN
WIND...60MPH
 
$$
1 follow-up statement
449 
WWUS52 KFFC 011729
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
129 PM EDT FRI SEP 1 2017

GAC209-011739-
/O.CAN.KFFC.SV.W.0322.000000T0000Z-170901T1800Z/
Montgomery GA-
129 PM EDT FRI SEP 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MONTGOMERY COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3207 8247 3229 8243 3243 8219 3235 8225
      3235 8224 3228 8223 3216 8218
TIME...MOT...LOC 1729Z 235DEG 25KT 3223 8237 

$$

GAC107-279-011800-
/O.CON.KFFC.SV.W.0322.000000T0000Z-170901T1800Z/
Toombs GA-Emanuel GA-
129 PM EDT FRI SEP 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT
FOR NORTHERN TOOMBS AND SOUTH CENTRAL EMANUEL COUNTIES...

At 129 PM EDT, a severe thunderstorm was located over Vidalia, or
near Lyons, moving northeast at 30 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Lyons, Vidalia, Oak Park, Santa Claus, Alston, South Thompson,
Center, Ohoopee, Ponderosa 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.

&&

LAT...LON 3207 8247 3229 8243 3243 8219 3235 8225
      3235 8224 3228 8223 3216 8218
TIME...MOT...LOC 1729Z 235DEG 25KT 3223 8237 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 12:18 AM EDTSpecial Weather StatementFFCChattooga, Dade, Floyd, Walker42 min
Sep 1, 1:11 AM EDTSpecial Weather StatementFFCCatoosa, Chattooga, Dade, Floyd, Walker, Whitfield49 min
Sep 1, 2:14 AM EDTSpecial Weather StatementFFCChattooga46 min
Sep 1, 5:41 AM EDTSpecial Weather StatementFFCCarroll, Douglas49 min
Sep 1, 6:51 AM EDTSpecial Weather StatementFFCPaulding39 min
Sep 1, 7:29 AM EDTSpecial Weather StatementFFCCherokee, Paulding46 min
Sep 1, 7:52 AM EDTSpecial Weather StatementFFCDawson, Lumpkin38 min
Sep 1, 8:18 AM EDTSpecial Weather StatementFFCCherokee, Cobb, Forsyth, Fulton27 min
Sep 1, 8:47 AM EDTSpecial Weather StatementFFCCherokee, Cobb, Dawson, Douglas, Forsyth, Fulton43 min
Sep 1, 12:47 PM EDTSpecial Weather StatementFFCEmanuel, Montgomery28 min
Sep 1, 2:34 PM EDTSpecial Weather StatementFFCToombs26 min
Sep 1, 3:04 PM EDTSpecial Weather StatementFFCToombs26 min
Sep 1, 3:17 PM EDTSevere Thunderstorm WarningFFCToombs43 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017Every 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.