Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 306, NWS Atlanta, GA

July 25, 20174 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 25, 2017, 6:47 PM EDT for 4 counties in Georgia. It was in force for 43 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
Jul 25, 2017, 6:47 PM EDT (22:47 UTC)
Expired
Jul 25, 2017, 7:30 PM EDT
In force
43 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Carroll County, GA, Coweta County, GA, Douglas County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 38 km from the middle of the area, began a volume at 22:49 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
Jul 25, 6:49 PM EDTTSTM WND DMGWest Lake, GAONE TREE DOWN ALONG W LAKE WAY.
Jul 25, 6:52 PM EDTTSTM WND DMG1 W Aberdeen Estates, GATWO TREES DOWN NEAR THE INTERSECTION OF BANKS MILL ROAD AND DANIELL MILL ROAD.

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, 10.8 hours before the alert went out and 42 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 2017-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 756 joules per kilogram.LCLLFCEL10008507005003002001001 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 2017-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 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
756 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

459 
WUUS52 KFFC 252247
SVRFFC
GAC045-077-097-121-252330-
/O.NEW.KFFC.SV.W.0306.170725T2247Z-170725T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
647 PM EDT TUE JUL 25 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southeastern Carroll County in northwestern Georgia...
  Southwestern Douglas County in north central Georgia...
  North central Coweta County in west central Georgia...
  Southwestern Fulton County in north central Georgia...

* Until 730 PM EDT

* At 646 PM EDT, a severe thunderstorm was located over Bill Arp, 
  moving southwest at 10 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Villa Rica, Whitesburg, Chattahoochee Hills, Dunaway Gardens, Byers 
  Crossroads, Treasure Lake, Hannah, Roscoe, Bill Arp, Seaton Lake 
  and Fairplay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

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 3372 8478 3364 8470 3341 8481 3354 8496
      3368 8504
TIME...MOT...LOC 2246Z 051DEG 7KT 3364 8482 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
572 
WWUS52 KFFC 252325
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
725 PM EDT TUE JUL 25 2017

GAC045-077-097-121-252334-
/O.EXP.KFFC.SV.W.0306.000000T0000Z-170725T2330Z/
Carroll GA-Douglas GA-Coweta GA-Fulton GA-
725 PM EDT TUE JUL 25 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CARROLL...
SOUTHWESTERN DOUGLAS...NORTH CENTRAL COWETA AND SOUTHWESTERN FULTON
COUNTIES WILL EXPIRE AT 730 PM EDT...
                
The storm which prompted the warning is weakening below severe 
limits, and therefore the warning will be allowed to expire. 
However, small hail, gusty winds and heavy rain are still possible 
with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Peachtree City.

LAT...LON 3372 8478 3364 8470 3341 8481 3354 8496
      3368 8504
TIME...MOT...LOC 2324Z 051DEG 7KT 3359 8489 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 10:04 PM EDTSpecial Weather StatementFFCTelfair26 min
Jul 25, 9:56 AM EDTSpecial Weather StatementFFCChattahoochee49 min
Jul 25, 10:37 AM EDTSpecial Weather StatementFFCMuscogee38 min
Jul 25, 10:55 AM EDTFlash Flood WarningFFCChattahoochee, Muscogee, Stewart6 hr
Jul 25, 11:38 AM EDTSpecial Weather StatementFFCMarion37 min
Jul 25, 12:32 PM EDTSpecial Weather StatementFFCSchley, Sumter, Webster58 min
Jul 25, 1:32 PM EDTSpecial Weather StatementFFCDooly, Macon, Sumter58 min
Jul 25, 3:14 PM EDTSpecial Weather StatementFFCGwinnett46 min
Jul 25, 3:42 PM EDTSpecial Weather StatementFFCDeKalb48 min
Jul 25, 3:45 PM EDTSpecial Weather StatementFFCDodge, Laurens45 min
Jul 25, 3:54 PM EDTSevere Thunderstorm WarningFFCDeKalb, Fulton19 min
Jul 25, 3:58 PM EDTSpecial Weather StatementFFCRockdale47 min
Jul 25, 4:19 PM EDTSpecial Weather StatementFFCDeKalb, Fulton41 min
Jul 25, 4:26 PM EDTSpecial Weather StatementFFCDodge, Johnson, Laurens49 min
Jul 25, 4:52 PM EDTSpecial Weather StatementFFCClayton38 min
Jul 25, 5:08 PM EDTSevere Thunderstorm WarningFFCClayton, Fayette, Fulton36 min
Jul 25, 5:10 PM EDTSpecial Weather StatementFFCEmanuel50 min
Jul 25, 5:32 PM EDTSpecial Weather StatementFFCDouglas28 min
Jul 25, 5:46 PM EDTSpecial Weather StatementFFCFayette44 min
Jul 25, 5:51 PM EDTSpecial Weather StatementFFCEmanuel39 min
Jul 25, 6:00 PM EDTSpecial Weather StatementFFCDouglas45 min
Jul 25, 6:26 PM EDTSpecial Weather StatementFFCEmanuel, Jefferson49 min
Jul 25, 6:40 PM EDTSpecial Weather StatementFFCDouglas50 min
Jul 25, 7:22 PM EDTSpecial Weather StatementFFCPolk23 min
Jul 25, 7:23 PM EDTSpecial Weather StatementFFCDouglas52 min
Jul 25, 7:28 PM EDTSpecial Weather StatementFFCCarroll47 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.