Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 247, NWS Atlanta, GA

June 23, 20174 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 23, 2017, 7:26 PM EDT for 4 counties in Georgia. It was in force for 49 min. 12 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, 7:26 PM EDT (23:26 UTC)
Expired
Jun 23, 2017, 8:15 PM EDT
In force
49 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cherokee County, GA, Cobb County, GA, Forsyth County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 90 km from the middle of the area, began a volume at 23:29 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, 7:27 PM EDTTSTM WND GST 391 Se Kennesaw, GAAWOS STATION RYY, COBB COUNTY-MC COLLUM FIELD AIRPORT.
Jun 23, 7:30 PM EDTTSTM WND DMGWoodstock, GAA TREE WAS REPORTED DOWN AT 105 EAST MAIN STREET.
Jun 23, 7:30 PM EDTTSTM WND GST 302 Ene Acworth, GAMESONET STATION GA304, 1 ENE ACWORTH.
Jun 23, 7:36 PM EDTTSTM WND DMG2 Ese Univeter, GAA TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF UNIVETER ROAD AND STOVER ROAD.
Jun 23, 7:42 PM EDTTSTM WND DMG2 Sw Batesville, GAPOWER LINES WERE REPORTED DOWN IN THE ROADWAY NEAR THE INTERSECTION OF BIG SPRINGS ROAD AND HIGHWAY 140.
Jun 23, 7:42 PM EDTTSTM WND DMGCreek Hollow South, GAA TREE WAS REPORTED ON POWER LINES NEAR THE INTERSECTION OF RIVERLAKE DRIVE AND HIGHWAY 140.
Jun 23, 7:48 PM EDTTSTM WND DMGGreyfield North, GAA TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF STILESBORO ROAD AND PAUL SAMUEL ROAD.
Jun 23, 7:54 PM EDTTSTM WND DMG1 Ssw Ducktown, GAA TREE WAS REPORTED DOWN ON HYDE ROAD.
Jun 23, 8:00 PM EDTTSTM WND DMG1 Nne Mars Hill Crossro, GAA TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF CASTLEBERRY ROAD AND BETHELVIEW ROAD.
Jun 23, 8:00 PM EDTTSTM WND DMG2 Wsw Mars Hill Crossro, GAA TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF FOWLER ROAD AND FOWLER HILL ROAD.
Jun 23, 8:06 PM EDTTSTM WND DMG1 Ssw Coal Mountain, GAA TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF DAHLONEGA HIGHWAY AND PUNCH HAMMOND ROAD.
Jun 23, 8:12 PM EDTTSTM WND GST 43Dobbins Air Reserve Bas, GAAWOS STATION MGE, DOBBINS AIR RESERVE BASE.

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, 11.4 hours before the alert went out and 87 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 12:00Z on 2017-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2017-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 150 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1201 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
150 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

170 
WUUS52 KFFC 232326
SVRFFC
GAC057-067-117-121-240015-
/O.NEW.KFFC.SV.W.0247.170623T2326Z-170624T0015Z/

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

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southern Cherokee County in north central Georgia...
  Forsyth County in north central Georgia...
  Northern Cobb County in north central Georgia...
  Northeastern Fulton County in north central Georgia...

* Until 815 PM EDT

* At 726 PM EDT, severe thunderstorms were located along a line
  extending from Hobgood Park to Kennesaw State University to Lost
  Mountain Park, moving northeast at 40 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Marietta, Canton, Cumming, Sandy Springs, Roswell, Johns Creek,
  Alpharetta, Dunwoody, Milton, Kennesaw, Woodstock, Acworth, Sugar
  Hill, Powder Springs, Holly Springs, Berkeley Lake, Free Home, Fair
  Oaks, Buffington and Mount Bethel.

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 3427 8395 3425 8395 3420 8398 3419 8405
      3415 8408 3407 8412 3405 8410 3403 8412
      3403 8417 3399 8419 3400 8423 3399 8426
      3397 8426 3397 8434 3395 8435 3388 8472
      3419 8464 3434 8412 3433 8405
TIME...MOT...LOC 2326Z 245DEG 37KT 3415 8459 3403 8456 3394 8469 

HAIL...<.75IN
WIND...60MPH
 
$$
1 follow-up statement
657 
WWUS52 KFFC 232359
SVSFFC

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

GAC057-067-117-121-240015-
/O.CON.KFFC.SV.W.0247.000000T0000Z-170624T0015Z/
Cherokee GA-Forsyth GA-Cobb GA-Fulton GA-
759 PM EDT FRI JUN 23 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHERN CHEROKEE...FORSYTH...NORTHERN COBB AND NORTHEASTERN
FULTON COUNTIES...

At 757 PM EDT, severe thunderstorms were located along a line
extending from near Free Home to near Milton to Alpharetta, moving 
northeast at 45 mph. A second storm was located along a line from 
Kennesaw to Jim Miller Park moving northeast at 45 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Marietta, Canton, Cumming, Sandy Springs, Roswell, Johns Creek,
Alpharetta, Dunwoody, Milton, Kennesaw, Woodstock, Acworth, Sugar
Hill, Powder Springs, Holly Springs, Berkeley Lake, Free Home, Fair
Oaks, Buffington and Mount Bethel.

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 3427 8395 3425 8395 3420 8398 3419 8405
      3415 8408 3407 8412 3405 8410 3403 8412
      3403 8417 3399 8419 3400 8423 3399 8426
      3397 8426 3397 8434 3395 8435 3388 8472
      3419 8464 3434 8412 3433 8405
TIME...MOT...LOC 2357Z 244DEG 37KT 3427 8428 3415 8425 3408 8431 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 8:06 PM EDTSpecial Weather StatementFFCForsyth, Gwinnett, Walton39 min
Jun 22, 8:13 PM EDTSevere Thunderstorm WarningFFCGreene, Morgan, Newton, Oconee, Putnam, Walton47 min
Jun 22, 8:47 PM EDTSevere Thunderstorm WarningFFCClarke, Greene, Jackson, Madison, Oconee, Oglethorpe and 1 more43 min
Jun 22, 9:17 PM EDTSpecial Weather StatementFFCHancock28 min
Jun 22, 9:29 PM EDTSpecial Weather StatementFFCClarke, Madison, Oglethorpe31 min
Jun 22, 9:44 PM EDTSpecial Weather StatementFFCGreene, Taliaferro, Wilkes31 min
Jun 22, 9:45 PM EDTSpecial Weather StatementFFCGreene, Taliaferro, Wilkes30 min
Jun 23, 3:59 AM EDTFlash Flood WatchFFCBanks, Barrow, Bartow, Carroll, Catoosa, Chattooga and 38 more35 hr
Jun 23, 4:36 PM EDTSpecial Weather StatementFFCChattooga, Dade, Walker39 min
Jun 23, 5:13 PM EDTSpecial Weather StatementFFCChattooga, Floyd, Gordon, Polk, Walker, Whitfield47 min
Jun 23, 5:27 PM EDTSevere Thunderstorm WarningFFCBartow, Chattooga, Floyd, Gordon, Polk48 min
Jun 23, 6:08 PM EDTSevere Thunderstorm WarningFFCHaralson, Polk52 min
Jun 23, 6:11 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Gilmer, Gordon, Murray, Pickens34 min
Jun 23, 6:45 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Haralson, Paulding, Polk45 min
Jun 23, 6:51 PM EDTSpecial Weather StatementFFCDawson, Pickens39 min
Jun 23, 7:00 PM EDTSpecial Weather StatementFFCCarroll, Haralson45 min
Jun 23, 7:39 PM EDTSpecial Weather StatementFFCLumpkin, White51 min
Jun 23, 7:40 PM EDTSpecial Weather StatementFFCCarroll, Heard50 min
Jun 23, 7:55 PM EDTSevere Thunderstorm WarningFFCCarroll, Coweta, Douglas, Fulton, Heard50 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.