Alert archive / Georgia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 285, NWS Atlanta, GA

July 14, 2015Morgan County, Oconee County, Walton County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 14, 2015, 8:55 PM EDT for Morgan County, Oconee County, Walton 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: Jul 14, 2015, 8:55 PM EDT (00:55 UTC)
Expired: Jul 14, 2015, 9:45 PM EDT
In force: 50 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Morgan County, GA, Oconee County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 97 km from the middle of the area, began a volume at 00:59 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
Jul 14, 4:59 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.9 hours before the alert went out and 91 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: 756 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1683 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

924 
WUUS52 KFFC 150055
SVRFFC
GAC211-219-297-150145-
/O.NEW.KFFC.SV.W.0285.150715T0055Z-150715T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
855 PM EDT TUE JUL 14 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WALTON COUNTY IN NORTH CENTRAL GEORGIA...
  CENTRAL OCONEE COUNTY IN NORTHEASTERN GEORGIA...
  NORTHWESTERN MORGAN COUNTY IN NORTH CENTRAL GEORGIA...

* UNTIL 945 PM EDT

* AT 855 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED EXTENDING FROM
  BOGART TO NEAR GRAYSON...MOVING SOUTHEAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MONROE...LOGANVILLE...SOCIAL CIRCLE...WALNUT GROVE...RUTLEDGE...
  NORTH HIGH SHOALS...BOSTWICK...BETWEEN...GOOD HOPE...BISHOP...
  JERSEY...NICHOLASVILLE...GRATIS...FARMINGTON...CAMPTON...
  EBENEZER...BOLD SPRINGS...HARD LABOR CREEK STATE PARK...PANNELL AND
  APALACHEE.

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 3374 8329 3370 8340 3365 8337 3362 8370
      3364 8373 3365 8376 3378 8397 3379 8398
      3392 8382 3392 8379 3391 8376 3389 8376
      3390 8374 3390 8373 3392 8368 3391 8365
      3393 8361
TIME...MOT...LOC 0055Z 309DEG 30KT 3393 8355 3386 8394 

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

1 follow-up statement

658 
WWUS52 KFFC 150140
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
940 PM EDT TUE JUL 14 2015

GAC211-219-297-150149-
/O.EXP.KFFC.SV.W.0285.000000T0000Z-150715T0145Z/
WALTON GA-OCONEE GA-MORGAN GA-
940 PM EDT TUE JUL 14 2015

...THE SEVERE THUNDERSTORM WARNING FOR WALTON...CENTRAL OCONEE AND
NORTHWESTERN MORGAN COUNTIES WILL EXPIRE AT 945 PM EDT...
            
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER HEAVY RAIN 
AND DANGEROUS CLOUD TO GROUND LIGHTNING ARE STILL POSSIBLE WITH THESE 
THUNDERSTORMS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT FOR
NORTHEASTERN GEORGIA. 

LAT...LON 3374 8329 3370 8340 3365 8337 3362 8370
      3364 8373 3365 8376 3378 8397 3379 8398
      3392 8382 3392 8379 3391 8376 3389 8376
      3390 8374 3390 8373 3392 8368 3391 8365
      3393 8361
TIME...MOT...LOC 0137Z 309DEG 30KT 3393 8355 3386 8394 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 8:00 PM EDT	Severe Thunderstorm Warning	FFC	Madison, Oglethorpe, Wilkes	45 min
Jul 14, 8:06 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Floyd	24 min
Jul 14, 8:12 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, Forsyth, Gwinnett, Hall, Jackson	48 min
Jul 14, 8:16 PM EDT	Severe Thunderstorm Warning	FFC	Bartow	29 min
Jul 14, 8:17 PM EDT	Special Weather Statement	FFC	Clarke	28 min
Jul 14, 8:22 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Cobb, Gordon, Paulding, Pickens	23 min
Jul 14, 8:23 PM EDT	Severe Thunderstorm Warning	FFC	Clarke, Jackson, Oconee, Oglethorpe	37 min
Jul 14, 8:30 PM EDT	Severe Thunderstorm Warning	FFC	Floyd, Polk	30 min
Jul 14, 8:32 PM EDT	Special Weather Statement	FFC	Forsyth	28 min
Jul 14, 8:44 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Carroll, Cherokee, Cobb, DeKalb, Douglas and 6 more	46 min
Jul 14, 8:53 PM EDT	Special Weather Statement	FFC	Taliaferro, Wilkes	37 min
Jul 14, 9:04 PM EDT	Special Weather Statement	FFC	Clarke	26 min
Jul 14, 9:22 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, Clayton, Coweta, DeKalb, Fayette, Fulton and 5 more	38 min
Jul 14, 9:28 PM EDT	Special Weather Statement	FFC	Greene, Morgan	32 min
Jul 14, 9:30 PM EDT	Special Weather Statement	FFC	Warren	30 min
Jul 14, 9:32 PM EDT	Special Weather Statement	FFC	Carroll, Cobb, Douglas, Fulton, Haralson, Paulding and 1 more	28 min
Jul 14, 9:53 PM EDT	Special Weather Statement	FFC	Carroll, Clayton, Cobb, Coweta, DeKalb, Douglas and 10 more	52 min
Jul 14, 10:39 PM EDT	Special Weather Statement	FFC	Carroll, Clayton, Coweta, Fayette, Heard, Lamar and 2 more	51 min
Jul 14, 11:24 PM EDT	Special Weather Statement	FFC	Bibb, Coweta, Jones, Lamar, Meriwether, Monroe and 3 more	66 min
Jul 15, 3:34 AM EDT	Heat Advisory	FFC	Bleckley, Dodge, Emanuel, Jefferson, Johnson, Laurens and 10 more	15 hr
Jul 15, 3:51 PM EDT	Special Weather Statement	FFC	Douglas	24 min
Jul 15, 4:12 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Fayette, Fulton	48 min
Jul 15, 4:54 PM EDT	Special Weather Statement	FFC	Wilcox	21 min
Jul 15, 4:58 PM EDT	Special Weather Statement	FFC	Spalding	32 min
Jul 15, 5:18 PM EDT	Special Weather Statement	FFC	Lamar	27 min
Jul 15, 5:22 PM EDT	Special Weather Statement	FFC	Chattahoochee, Stewart	38 min
Jul 15, 5:39 PM EDT	Special Weather Statement	FFC	Bibb	36 min
Jul 15, 5:50 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Jones, Twiggs	40 min
Jul 15, 6:36 PM EDT	Special Weather Statement	FFC	Toombs	24 min
Jul 15, 7:56 PM EDT	Special Weather Statement	FFC	Laurens, Wheeler	34 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2015 Every severe thunderstorm warning in 2015

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.