Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 252, NWS Atlanta, GA

June 23, 20175 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 23, 2017, 9:13 PM EDT for 5 counties in Georgia. It was in force for 47 min. 4 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
Jun 23, 2017, 9:13 PM EDT (01:13 UTC)
Expired
Jun 23, 2017, 10:00 PM EDT
In force
47 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Clayton County, GA, DeKalb County, GA, Henry County, GA, Newton County, GA, Rockdale County, GA

The radar

The Atlanta radar (KFFC), 51 km from the middle of the area, began a volume at 01:16 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

TimeReportWhereRemark
Jun 23, 9:13 PM EDTTSTM WND DMGVinton Woods, GAPOWER LINES WERE REPORTED DOWN NEAR THE INTERSECTION OF MARTHA DRIVE AND BRIAN LANE.
Jun 23, 9:13 PM EDTTSTM WND DMGVinton Woods, GAPOWER LINES WERE REPORTED DOWN ON CASTLETON LANE.
Jun 23, 9:40 PM EDTTSTM WND DMG2 Sw Eastdale Mobile Ho, GATREE DOWN NEAR THE INTERSECTION OF GRANADE AND MCCOLLUM JUST SW OF CONYERS
Jun 23, 9:45 PM EDTTSTM WND DMG2 Se Eastdale Mobile Ho, GATREE DOWN AT THE WOODLAND TRACE APARTMENTS IN CONYERS

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, 1.2 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2017-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 364 joules per kilogram.LCLEL10008507005003002001001 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 2017-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.193958Sfc1 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
364 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1358 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.8

Open this sounding in Storm Lab

The text

As transmitted.

585 
WUUS52 KFFC 240113
SVRFFC
GAC063-089-151-217-247-240200-
/O.NEW.KFFC.SV.W.0252.170624T0113Z-170624T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
913 PM EDT FRI JUN 23 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Rockdale County in north central Georgia...
  Southern DeKalb County in north central Georgia...
  North central Henry County in north central Georgia...
  Northeastern Clayton County in north central Georgia...
  Northwestern Newton County in north central Georgia...

* Until 1000 PM EDT

* At 913 PM EDT, severe thunderstorms were located along a line
  extending from near Lakewood Park to Morrow, moving east at 35 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Conyers, Covington, Forest Park, Morrow, Lake City, Oxford,
  Lithonia, Porterdale, Lakeview Estates, Candler-Mcafee, Georgia
  International Horse Park, Belvedere Park, Rex, Belmont, Arabia
  Mountain, Big Haynes Creek Park, Hidden Valley Park, Conley,
  Kelleytown and Oak Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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 3365 8435 3372 8435 3377 8405 3375 8402
      3378 8399 3378 8397 3369 8383 3356 8383
      3352 8413 3358 8422 3359 8427 3357 8437
      3365 8437
TIME...MOT...LOC 0113Z 266DEG 32KT 3368 8435 3358 8435 

HAIL...<.75IN
WIND...60MPH
 
$$
2 follow-up statements
763 
WWUS52 KFFC 240130
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
930 PM EDT FRI JUN 23 2017

GAC063-240140-
/O.CAN.KFFC.SV.W.0252.000000T0000Z-170624T0200Z/
Clayton GA-
930 PM EDT FRI JUN 23 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLAYTON COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3377 8407 3377 8405 3375 8402 3378 8399
      3378 8397 3369 8383 3356 8383 3352 8413
      3357 8421 3359 8425 3374 8426
TIME...MOT...LOC 0130Z 265DEG 35KT 3370 8417 3359 8417 

$$

GAC089-151-217-247-240200-
/O.CON.KFFC.SV.W.0252.000000T0000Z-170624T0200Z/
Rockdale GA-DeKalb GA-Henry GA-Newton GA-
930 PM EDT FRI JUN 23 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR ROCKDALE...SOUTHEASTERN DEKALB...NORTH CENTRAL HENRY AND
NORTHWESTERN NEWTON COUNTIES...

At 930 PM EDT, severe thunderstorms were located along a line
extending from Snapfinger to Richardson Park, moving east at 40 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Conyers, Covington, Oxford, Lithonia, Porterdale, Lakeview Estates,
Georgia International Horse Park, Candler-Mcafee, Belvedere Park,
Magnet, Almon, Milstead, Belmont, Richardson Park, Arabia Mountain,
Big Haynes Creek Park, Redan, Hidden Valley Park, Panola Mountain
State Park and Gum Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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 3377 8407 3377 8405 3375 8402 3378 8399
      3378 8397 3369 8383 3356 8383 3352 8413
      3357 8421 3359 8425 3374 8426
TIME...MOT...LOC 0130Z 265DEG 35KT 3370 8417 3359 8417 

HAIL...<.75IN
WIND...60MPH
 
$$
159 
WWUS52 KFFC 240144
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
944 PM EDT FRI JUN 23 2017

GAC089-151-240154-
/O.CAN.KFFC.SV.W.0252.000000T0000Z-170624T0200Z/
DeKalb GA-Henry GA-
944 PM EDT FRI JUN 23 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DEKALB AND NORTH
CENTRAL HENRY COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3378 8397 3369 8383 3356 8383 3354 8399
      3355 8407 3356 8409 3364 8409 3373 8406
      3375 8402 3377 8400 3378 8398
TIME...MOT...LOC 0144Z 256DEG 41KT 3372 8399 3367 8397 3357 8401 

$$

GAC217-247-240200-
/O.CON.KFFC.SV.W.0252.000000T0000Z-170624T0200Z/
Rockdale GA-Newton GA-
944 PM EDT FRI JUN 23 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR ROCKDALE AND NORTHWESTERN NEWTON COUNTIES...

At 944 PM EDT, severe thunderstorms were located along a line
extending from near Lakeview Estates to Milstead to Magnet, moving
east at 50 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Conyers, Covington, Oxford, Porterdale, Lakeview Estates, Georgia
International Horse Park, Magnet, Gum Creek, Almon, Milstead and Big
Haynes Creek Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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 3378 8397 3369 8383 3356 8383 3354 8399
      3355 8407 3356 8409 3364 8409 3373 8406
      3375 8402 3377 8400 3378 8398
TIME...MOT...LOC 0144Z 256DEG 41KT 3372 8399 3367 8397 3357 8401 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 8:13 PM EDTSevere Thunderstorm WarningFFCBanks, Dawson, Forsyth, Gwinnett, Hall, Jackson47 min
Jun 23, 8:16 PM EDTSpecial Weather StatementFFCGwinnett29 min
Jun 23, 8:42 PM EDTSevere Thunderstorm WarningFFCClayton, Coweta, Fayette, Henry, Spalding48 min
Jun 23, 8:50 PM EDTSevere Thunderstorm WarningFFCBanks, Barrow, Gwinnett, Hall, Jackson40 min
Jun 23, 8:52 PM EDTSpecial Weather StatementFFCDeKalb38 min
Jun 23, 9:57 PM EDTSpecial Weather StatementFFCMorgan, Newton48 min
Jun 24, 10:57 AM EDTSpecial Weather StatementFFCCoweta33 min
Jun 24, 2:04 PM EDTSpecial Weather StatementFFCTwiggs26 min
Jun 24, 2:17 PM EDTSpecial Weather StatementFFCStewart28 min
Jun 24, 6:50 PM EDTSpecial Weather StatementFFCButts25 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017Every 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.