Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 34, NWS Atlanta, GA

February 7, 2017Macon County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Feb 7, 2017, 5:20 PM EST for Macon County, Georgia. It was in force for 25 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: Feb 7, 2017, 5:20 PM EST (22:20 UTC)
Expired: Feb 7, 2017, 5:45 PM EST
In force: 25 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Macon County, GA

The radar

The Robins AFB radar (KJGX), 68 km from the middle of the area, began a volume at 22:24 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
Feb 7, 5:24 PM EST	TSTM WND DMG	1 Nnw Oglethorpe, GA	A COUPLE TREES DOWN NORTH OF OGLETHORPE NEAR HWY 128.

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

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.3 hours before the alert went out and 117 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1498 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

053 
WUUS52 KFFC 072220
SVRFFC
GAC193-072245-
/O.NEW.KFFC.SV.W.0034.170207T2220Z-170207T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
520 PM EST TUE FEB 7 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Central Macon County in west central Georgia...

* Until 545 PM EST

* At 520 PM EST, a severe thunderstorm was located over Bartlett, or
  near Oglethorpe, moving northeast 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...
  Oglethorpe, Montezuma, Marshallville, Whitewater State Park,
  Fountainville, Winchester and Bartlett.

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 3230 8421 3251 8400 3249 8393 3248 8392
      3249 8392 3247 8387 3235 8385 3223 8414
TIME...MOT...LOC 2220Z 230DEG 28KT 3231 8411 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

1 follow-up statement

272 
WWUS52 KFFC 072240
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
540 PM EST TUE FEB 7 2017

GAC193-072249-
/O.EXP.KFFC.SV.W.0034.000000T0000Z-170207T2245Z/
Macon GA-
540 PM EST TUE FEB 7 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MACON COUNTY WILL
EXPIRE AT 545 PM EST...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will 
be allowed to expire.  However heavy rain and lightning are still 
possible through 6 PM. 

LAT...LON 3230 8421 3251 8400 3249 8393 3248 8392
      3249 8392 3247 8387 3235 8385 3223 8414
TIME...MOT...LOC 2239Z 230DEG 28KT 3239 8400 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 7, 2:31 PM EST	Special Weather Statement	FFC	Dade	44 min
Feb 7, 3:10 PM EST	Special Weather Statement	FFC	Catoosa, Dade	50 min
Feb 7, 3:50 PM EST	Severe Thunderstorm Warning	FFC	Chattahoochee, Harris, Marion, Meriwether, Muscogee, Talbot and 1 more	40 min
Feb 7, 4:27 PM EST	Severe Thunderstorm Warning	FFC	Chattahoochee, Harris, Marion, Muscogee, Talbot, Taylor	48 min
Feb 7, 4:29 PM EST	Severe Thunderstorm Warning	FFC	Harris, Meriwether, Troup	46 min
Feb 7, 4:48 PM EST	Special Weather Statement	FFC	Macon, Marion, Schley, Sumter, Webster	42 min
Feb 7, 5:04 PM EST	Special Weather Statement	FFC	Taylor, Upson	26 min
Feb 7, 5:08 PM EST	Severe Thunderstorm Warning	FFC	Harris, Meriwether, Pike, Talbot, Upson	37 min
Feb 7, 5:23 PM EST	Special Weather Statement	FFC	Sumter	37 min
Feb 7, 5:24 PM EST	Severe Thunderstorm Warning	FFC	Bibb, Crawford, Monroe, Taylor, Upson	36 min
Feb 7, 5:34 PM EST	Severe Thunderstorm Warning	FFC	Dooly, Sumter	41 min
Feb 7, 5:44 PM EST	Severe Thunderstorm Warning	FFC	Crisp, Dooly, Sumter	31 min
Feb 7, 5:47 PM EST	Special Weather Statement	FFC	Houston, Peach	43 min
Feb 7, 5:58 PM EST	Special Weather Statement	FFC	Jasper, Jones, Monroe	32 min
Feb 7, 6:10 PM EST	Severe Thunderstorm Warning	FFC	Crisp, Dodge, Dooly, Pulaski, Wilcox	50 min
Feb 7, 6:19 PM EST	Special Weather Statement	FFC	Baldwin, Bleckley, Twiggs, Wilkinson	41 min
Feb 7, 6:52 PM EST	Special Weather Statement	FFC	Baldwin, Bleckley, Hancock, Laurens, Washington, Wilkinson	38 min
Feb 7, 6:56 PM EST	Special Weather Statement	FFC	Dodge, Telfair, Wilcox	49 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.