Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 344, NWS Atlanta, GA

November 7, 2017Fannin County, Gilmer County, Murray County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Nov 7, 2017, 10:30 AM EST for Fannin County, Gilmer County, Murray County, Georgia. It was in force for 45 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
Nov 7, 2017, 10:30 AM EST (15:30 UTC)
Expired
Nov 7, 2017, 11:15 AM EST
In force
45 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Fannin County, GA, Gilmer County, GA, Murray County, GA

The radar

The Northeast Alabama radar (KHTX), 152 km from the middle of the area, began a volume at 15:30 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, 3.5 hours before the alert went out and 172 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, Peachtre/Fal Fld, GA at 12:00Z on 2017-11-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 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, Peachtre/Fal Fld, GA at 12:00Z on 2017-11-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 square meters per square second.19395878Sfc1 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
28 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
866 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

348 
WUUS52 KFFC 071530
SVRFFC
GAC111-123-213-071615-
/O.NEW.KFFC.SV.W.0344.171107T1530Z-171107T1615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
1030 AM EST TUE NOV 7 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northeastern Murray County in northwestern Georgia...
  Northern Gilmer County in north central Georgia...
  Fannin County in north central Georgia...

* Until 1115 AM EST

* At 1030 AM EST, a severe thunderstorm was located near Conasauga,
  or 9 miles southwest of Benton, moving southeast at 30 mph.

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

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Blue Ridge, Morganton, Jones Mill, Higdon, Gregory, Loving, Cohutta
  Wilderness, Epworth, Conasauga Lake, Tennga, Mineral Bluff, Cisco,
  Cherry Log, Colwell and Copperhill.

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 3499 8420 3498 8417 3480 8426 3472 8449
      3496 8482 3499 8481
TIME...MOT...LOC 1530Z 297DEG 26KT 3505 8473 

HAIL...0.75IN
WIND...60MPH
 
$$
1 follow-up statement
049 
WWUS52 KFFC 071602
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
1102 AM EST TUE NOV 7 2017

GAC123-071611-
/O.CAN.KFFC.SV.W.0344.000000T0000Z-171107T1615Z/
Gilmer GA-
1102 AM EST TUE NOV 7 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN GILMER COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled. Another storm upstream 
however could produce some strong winds within the next hour.

LAT...LON 3499 8420 3498 8417 3482 8425 3485 8444
      3496 8482 3499 8481
TIME...MOT...LOC 1601Z 297DEG 26KT 3495 8448 

$$

GAC111-213-071615-
/O.CON.KFFC.SV.W.0344.000000T0000Z-171107T1615Z/
Murray GA-Fannin GA-
1102 AM EST TUE NOV 7 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EST
FOR NORTHEASTERN MURRAY AND NORTHERN FANNIN COUNTIES...

At 1101 AM EST, a severe thunderstorm was located near Colwell, or 8
miles southwest of Ducktown, moving southeast at 30 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Blue Ridge, Morganton, Jones Mill, Higdon, Gregory, Loving, Cohutta
Wilderness, Epworth, Tennga, Mineral Bluff, Cisco, Colwell and
Copperhill.

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 3499 8420 3498 8417 3482 8425 3485 8444
      3496 8482 3499 8481
TIME...MOT...LOC 1601Z 297DEG 26KT 3495 8448 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 7, 10:22 AM ESTSpecial Weather StatementFFCMurray38 min
Nov 7, 10:54 AM ESTSpecial Weather StatementFFCWhitfield36 min
Nov 7, 11:35 AM ESTSpecial Weather StatementFFCFannin, Murray25 min
Nov 7, 12:30 PM ESTSpecial Weather StatementFFCMurray30 min
Nov 7, 1:00 PM ESTSpecial Weather StatementFFCGilmer30 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.