Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

August 7, 2017Gilmer County, Pickens County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 7, 2017, 10:37 PM EDT for Gilmer County, Pickens County, Georgia. It was in force for 38 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
Aug 7, 2017, 10:37 PM EDT (02:37 UTC)
Expired
Aug 7, 2017, 11:15 PM EDT
In force
38 min
Issued by
NWS Atlanta, GA
Wind
40

Counties Gilmer County, GA, Pickens County, GA

The radar

The Atlanta radar (KFFC), 125 km from the middle of the area, began a volume at 02:38 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 00:00Z, 2.6 hours before the alert went out and 125 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 00:00Z on 2017-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 824 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 00:00Z on 2017-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.1939Sfc1 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
824 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1037 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

126 
WWUS82 KFFC 080237
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
1037 PM EDT MON AUG 7 2017
 
GAZ005-007-012-013-080315-
Gilmer GA-Gordon GA-Pickens GA-Murray GA-
1037 PM EDT MON AUG 7 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GILMER...EASTERN
GORDON...PICKENS AND SOUTHEASTERN MURRAY COUNTIES UNTIL 1115 PM
EDT...

At 1037 PM EDT...a strong thunderstorm was over Ranger, or 11 miles
east of Calhoun...moving east at 30 mph.

  HAZARD...Up to 40 mph wind...frequent cloud to ground lightning 
           and heavy rain. 

  IMPACT...Expect minor damage to tree limbs and blowing around of 
           light...unsecured objects. Heavy rain may cause temporary 
           street flooding especially in poor drainage areas. 

Some locations in the path of this storm include
Jasper, Ellijay, East Ellijay, Talking Rock, Fairmount, Ranger,
Carters, Sonoraville, Talona, Tails Creek, Redbud, Audubon, Blaine,
Lake Tamarack, Talmadge, Oakman, Hinton, Roundtop and Nickelsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3445 8434 3441 8463 3441 8473 3440 8473
      3440 8484 3463 8487 3474 8444
TIME...MOT...LOC 0237Z 251DEG 28KT 3449 8474 

WIND...40MPH

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 8:00 PM EDTSpecial Weather StatementFFCDooly30 min
Aug 7, 8:06 PM EDTSpecial Weather StatementFFCDawson, Lumpkin39 min
Aug 7, 9:32 PM EDTSpecial Weather StatementFFCMurray43 min
Aug 7, 10:08 PM EDTSpecial Weather StatementFFCFloyd37 min
Aug 7, 11:30 PM EDTSpecial Weather StatementFFCCobb, Paulding45 min
Aug 8, 12:26 AM EDTSpecial Weather StatementFFCBanks, DeKalb, Forsyth, Fulton, Gwinnett, Hall49 min
Aug 8, 1:16 PM EDTSpecial Weather StatementFFCBleckley, Jefferson, Johnson29 min
Aug 8, 1:44 PM EDTSpecial Weather StatementFFCBleckley, Johnson31 min
Aug 8, 6:43 PM EDTSpecial Weather StatementFFCCrawford, Peach, Taylor32 min
Aug 8, 7:35 PM EDTAreal Flood WarningFFCCrawford, Taylor6 hr

Nearby

Special Weather Statements in Georgia, 2017Every special weather statement 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.