Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

April 5, 20176 counties in Georgia

NWS Atlanta, GA issued this special weather statement at Apr 5, 2017, 11:10 PM EDT for 6 counties in Georgia. It was in force for 50 min. 3 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: Apr 5, 2017, 11:10 PM EDT (03:10 UTC)
Expired: Apr 6, 2017, 12:00 AM EDT
In force: 50 min
Issued by: NWS Atlanta, GA
Hail: 0.88 in
Wind: 50

Counties Butts County, GA, Henry County, GA, Newton County, GA, Rockdale County, GA, Spalding County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 65 km from the middle of the area, began a volume at 03:15 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
Apr 5, 11:38 PM EDT	TSTM WND DMG	1 W Griffin, GA	TREES DOWN AT INTERSECTION OF 14TH STREET AND W POPLAR STREET IN GRIFFIN
Apr 5, 11:45 PM EDT	TSTM WND DMG	Social Circle, GA	POST STORM REPORT FROM EMERGENCY MANAGEMENT OF TREES DOWN NEAR A CAR WASH IN SOCIAL CIRCLE.
Apr 6, 12:00 AM EDT	TSTM WND DMG	Social Circle, GA	POST STORM REPORT FROM EMERGENCY MANAGEMENT OF TREES DOWN NEAR A CAR WASH IN SOCIAL CIRCLE.

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 00:00Z, 3.2 hours before the alert went out and 59 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: 723 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 594 m above ground
0-6 km bulk shear: 93 kt
0-1 km storm-relative helicity: 354 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 9.8

Open this sounding in Storm Lab

The text

As transmitted.

830 
WWUS82 KFFC 060310
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
1110 PM EDT WED APR 5 2017
 
GAZ034>036-045>048-055>058-060400-
Butts GA-Walton GA-Rockdale GA-Barrow GA-Clayton GA-DeKalb GA-
Gwinnett GA-Spalding GA-Clarke GA-Newton GA-Henry GA-
1110 PM EDT WED APR 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR BUTTS...WALTON...ROCKDALE...
SOUTHERN BARROW...SOUTHEASTERN CLAYTON...SOUTHEASTERN DEKALB...
SOUTHEASTERN GWINNETT...SPALDING...WESTERN CLARKE...NEWTON AND HENRY
COUNTIES UNTIL midnight EDT...

At 1110 PM EDT...a line of strong thunderstorms was along a line
extending from near Lawrenceville to near Brooks...and moving east at
40 mph.

  HAZARD...40 to 50 mph wind...nickel sized hail and frequent cloud 
           to ground lightning. 

  IMPACT...Expect minor damage to tree limbs and blowing around of 
           light...unsecured objects. 

Some locations in the path of these storms include
Lawrenceville, Griffin, McDonough, Conyers, Winder, Monroe,
Covington, Jackson, Stockbridge, Snellville, Loganville, Hampton,
Auburn, Lovejoy, Locust Grove, Dacula, Social Circle, Grayson,
Statham and Oxford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3326 8450 3326 8443 3332 8439 3341 8439
      3399 8398 3399 8355 3397 8354 3399 8348
      3393 8351 3396 8355 3391 8364 3384 8355
      3359 8369 3349 8372 3341 8385 3339 8383
      3334 8386 3327 8383 3320 8386 3323 8450
TIME...MOT...LOC 0310Z 259DEG 34KT 3395 8394 3326 8443 

HAIL...0.88IN
WIND...50MPH

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 8:11 PM EDT	Special Weather Statement	FFC	Floyd, Polk	34 min
Apr 5, 8:16 PM EDT	Severe Thunderstorm Warning	FFC	Floyd, Haralson, Paulding, Polk	29 min
Apr 5, 8:17 PM EDT	Special Weather Statement	FFC	Coweta	28 min
Apr 5, 8:41 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Dade, Walker, Whitfield	49 min
Apr 5, 8:43 PM EDT	Special Weather Statement	FFC	Cherokee, Pickens	32 min
Apr 5, 8:54 PM EDT	Special Weather Statement	FFC	Paulding	36 min
Apr 5, 9:00 PM EDT	Special Weather Statement	FFC	Gordon	30 min
Apr 5, 9:01 PM EDT	Flash Flood Warning	FFC	Bartow, Floyd, Polk	6 hr
Apr 5, 9:03 PM EDT	Wind Advisory	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more	23 hr
Apr 5, 9:06 PM EDT	Special Weather Statement	FFC	DeKalb, Fulton	24 min
Apr 5, 9:08 PM EDT	Flash Flood Warning	FFC	DeKalb, Fulton, Gwinnett	6 hr
Apr 5, 9:26 PM EDT	Special Weather Statement	FFC	Paulding	34 min
Apr 5, 9:31 PM EDT	Special Weather Statement	FFC	Carroll	29 min
Apr 5, 9:32 PM EDT	Special Weather Statement	FFC	Toombs	43 min
Apr 5, 9:33 PM EDT	Special Weather Statement	FFC	Cherokee	27 min
Apr 5, 9:44 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Coweta, Heard	31 min
Apr 5, 9:50 PM EDT	Special Weather Statement	FFC	Wheeler	25 min
Apr 5, 9:57 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Heard, Troup	48 min
Apr 5, 10:08 PM EDT	Special Weather Statement	FFC	Douglas	37 min
Apr 5, 10:14 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Coweta, Douglas, Fayette, Fulton	46 min
Apr 5, 10:20 PM EDT	Special Weather Statement	FFC	Fulton	40 min
Apr 5, 10:30 PM EDT	Special Weather Statement	FFC	Clayton, DeKalb, Gwinnett, Henry, Rockdale	45 min
Apr 5, 10:40 PM EDT	Severe Thunderstorm Warning	FFC	Harris, Meriwether, Troup	50 min
Apr 5, 10:48 PM EDT	River Flood Warning	FFC	DeKalb	24 hr
Apr 5, 10:52 PM EDT	River Flood Warning	FFC	Cobb	24 hr
Apr 5, 10:53 PM EDT	Severe Thunderstorm Warning	FFC	Harris, Marion, Meriwether, Muscogee, Talbot	52 min
Apr 5, 11:00 PM EDT	Special Weather Statement	FFC	Banks, Hall, Jackson	45 min
Apr 5, 11:06 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Barrow, Clarke, Hall, Jackson, Madison and 1 more	39 min
Apr 5, 11:48 PM EDT	Special Weather Statement	FFC	Crawford, Macon, Marion, Schley, Talbot, Taylor and 1 more	42 min
Apr 5, 11:55 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Morgan, Newton, Oconee, Walton	20 min
Apr 6, 12:03 AM EDT	River Flood Warning	FFC	Cobb	24 hr
Apr 6, 12:10 AM EDT	Special Weather Statement	FFC	Clarke	50 min
Apr 6, 12:23 AM EDT	Special Weather Statement	FFC	Baldwin, Bibb, Jones, Twiggs	52 min
Apr 6, 12:24 AM EDT	River Flood Warning	FFC	Madison, Oglethorpe	24 hr
Apr 6, 12:29 AM EDT	Special Weather Statement	FFC	Houston, Macon, Peach	46 min
Apr 6, 1:00 AM EDT	Special Weather Statement	FFC	Baldwin, Glascock, Hancock, Houston, Twiggs, Warren and 2 more	45 min
Apr 6, 1:58 AM EDT	Special Weather Statement	FFC	Jefferson, Washington	47 min
Apr 6, 3:14 AM EDT	Special Weather Statement	FFC	Emanuel	31 min
Apr 6, 4:13 AM EDT	River Flood Warning	FFC	Carroll, Coweta, Heard	30 hr
Apr 6, 11:23 AM EDT	River Flood Warning	FFC	Coweta, Fayette, Spalding	24 hr
Apr 6, 12:21 PM EDT	River Flood Warning	FFC	Cobb, Paulding	24 hr
Apr 6, 12:48 PM EDT	River Flood Warning	FFC	Cobb, Douglas	41 hr
Apr 6, 12:48 PM EDT	River Flood Warning	FFC	Fayette, Spalding	38 hr
Apr 6, 3:28 PM EDT	River Flood Warning	FFC	Butts, Henry, Newton	24 hr
Apr 6, 5:10 PM EDT	River Flood Warning	FFC	Clayton, Fayette, Spalding	24 hr

Nearby

Special Weather Statements in Georgia, 2017 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.