Alert archive / Georgia / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 35, NWS Atlanta, GA

May 14, 20148 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 14, 2014, 6:43 PM EDT for 8 counties in Georgia. It was in force for 47 min. 2 reports 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: May 14, 2014, 6:43 PM EDT (22:43 UTC)
Expired: May 14, 2014, 7:30 PM EDT
In force: 47 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Clayton County, GA, DeKalb County, GA, Gwinnett County, GA, Henry County, GA, Morgan County, GA, Newton County, GA, Rockdale County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 52 km from the middle of the area, began a volume at 22:44 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
May 14, 7:10 PM EDT	TSTM WND DMG	2 Sw Blacksville, GA	4 TREES DOWN ACROSS THE COUNTY. ONE NEAR FORSTON ROAD...ONE ON INDUSTRIAL BLVD...ONE NEAR CAMPGROUND ROAD AND CAMPGROUND COURT AND ANOTHER NEAR MOUNTAIN LAUREL AND HWY 20E.
May 14, 7:15 PM EDT	TSTM WND DMG	Monroe, GA	NUMEROUS TREES AND POWER LINES REPORTED BLOWN DOWN ACROSS THE COUNTY.

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, 10.7 hours before the alert went out and 46 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: 71 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 895 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

577 
WUUS52 KFFC 142243
SVRFFC
GAC063-089-135-151-211-217-247-297-142330-
/O.NEW.KFFC.SV.W.0035.140514T2243Z-140514T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
643 PM EDT WED MAY 14 2014

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CLAYTON COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHERN DEKALB COUNTY IN NORTH CENTRAL GEORGIA
  SOUTH CENTRAL GWINNETT COUNTY IN NORTH CENTRAL GEORGIA
  HENRY COUNTY IN NORTH CENTRAL GEORGIA
  WEST CENTRAL MORGAN COUNTY IN NORTH CENTRAL GEORGIA
  NEWTON COUNTY IN NORTH CENTRAL GEORGIA
  ROCKDALE COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHERN WALTON COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 730 PM EDT

* AT 641 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS UP
  TO 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  10 MILES SOUTH OF RUTLEDGE TO 9 MILES SOUTH OF PORTERDALE TO 10
  MILES SOUTH OF MCDONOUGH...MOVING NORTHWEST AT 45 MPH. REPORTS OF 
  NUMEROUS TREES DOWN HAVE BEEN RECEIVED EARLIER WITH THESE STORMS.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  COVINGTON...OXFORD...SOCIAL CIRCLE...LOVEJOY...GOOD HOPE...
  STOCKBRIDGE...GEORGIA INTERNATIONAL HORSE PARK...JONESBORO...
  CONYERS...JERSEY...MONROE...MORROW...LAKEVIEW ESTATES...LAKE
  CITY...WALNUT GROVE...LITHONIA...FOREST PARK...BETWEEN...AVONDALE
  ESTATES...DECATUR...PINE LAKE...STONE MOUNTAIN AND DRUID HILLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK SHELTER 
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3365 8437 3365 8435 3371 8435 3380 8433
      3383 8399 3381 8362 3354 8349 3356 8370
      3349 8395 3346 8391 3334 8404 3338 8402
      3343 8433 3357 8439
TIME...MOT...LOC 2242Z 135DEG 41KT 3349 8359 3345 8391
          3331 8413

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 3:25 PM EDT	Special Weather Statement	FFC	Stewart	35 min
May 14, 3:30 PM EDT	Flash Flood Watch	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more	15 hr
May 14, 3:52 PM EDT	Special Weather Statement	FFC	Crisp, Dodge, Telfair, Wheeler, Wilcox	23 min
May 14, 4:06 PM EDT	Special Weather Statement	FFC	Chattahoochee, Marion	24 min
May 14, 4:17 PM EDT	Severe Thunderstorm Warning	FFC	Marion	28 min
May 14, 4:19 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Dodge, Laurens, Telfair	41 min
May 14, 4:46 PM EDT	Special Weather Statement	FFC	Harris, Muscogee, Talbot	29 min
May 14, 4:51 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Laurens, Twiggs, Wilkinson	39 min
May 14, 5:31 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Bibb, Jones, Monroe, Twiggs, Wilkinson	44 min
May 14, 5:47 PM EDT	Special Weather Statement	FFC	Peach	28 min
May 14, 6:02 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Crawford, Houston, Macon, Monroe, Peach and 1 more	43 min
May 14, 6:12 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Jasper, Jones, Monroe, Morgan, Newton and 1 more	48 min
May 14, 6:27 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Crawford, Henry, Lamar, Monroe, Pike and 2 more	48 min
May 14, 7:22 PM EDT	Special Weather Statement	FFC	Barrow, Gwinnett	23 min
May 14, 7:45 PM EDT	Special Weather Statement	FFC	Forsyth, Hall, Jackson	30 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2014 Every severe thunderstorm warning in 2014

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.