Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 280, NWS Atlanta, GA

July 10, 2017Greene County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 10, 2017, 5:20 PM EDT for Greene County, Georgia. It was in force for 13 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 10, 2017, 5:20 PM EDT (21:20 UTC)
Expired: Jul 10, 2017, 5:33 PM EDT
In force: 13 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Greene County, GA

The radar

The Robins AFB radar (KJGX), 88 km from the middle of the area, began a volume at 21:22 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
Jul 10, 5:25 PM EDT	TSTM WND DMG	1 Sse Thurston, GA	HOME DEPOT NEAR GREENSBORO HAD OUTDOOR OVERHEAD SHELTERS FLIPPED OVER OUTSIDE THE STORE.
Jul 10, 5:25 PM EDT	TSTM WND DMG	Greensboro, GA	HALF A DOZEN TREES ARE REPORTEDLY BLOWN OVER WITHIN THE TOWN OF GREENSBORO... SOME BLOWN DOWN OVER POWERLINES

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, 9.3 hours before the alert went out and 119 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: 96 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1114 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: -36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

482 
WUUS52 KFFC 102120
SVRFFC
GAC133-102145-
/O.NEW.KFFC.SV.W.0280.170710T2120Z-170710T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
520 PM EDT MON JUL 10 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southwestern Greene County in east central Georgia...

* Until 545 PM EDT

* At 520 PM EDT, a severe thunderstorm was located over Greensboro,
  moving south at 5 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...
  Greensboro, Siloam, Reynolds Plantation, Liberty, Veazey and Carey.

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 3338 8313 3339 8319 3340 8320 3339 8322
      3340 8322 3340 8324 3342 8324 3344 8326
      3345 8326 3347 8328 3351 8328 3354 8327
      3357 8332 3363 8329 3359 8308 3342 8308
TIME...MOT...LOC 2120Z 012DEG 6KT 3354 8321 

HAIL...1.00IN
WIND...60MPH
 
$$

1 follow-up statement

736 
WWUS52 KFFC 102133
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
533 PM EDT MON JUL 10 2017

GAC133-102143-
/O.CAN.KFFC.SV.W.0280.000000T0000Z-170710T2145Z/
Greene GA-
533 PM EDT MON JUL 10 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN GREENE COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning has been cancelled.

LAT...LON 3338 8313 3339 8319 3340 8320 3339 8322
      3340 8322 3340 8324 3342 8324 3344 8326
      3345 8326 3347 8328 3351 8328 3354 8327
      3357 8332 3363 8329 3359 8308 3342 8308
TIME...MOT...LOC 2128Z 012DEG 6KT 3352 8322 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 8:15 PM EDT	Special Weather Statement	FFC	Houston	30 min
Jul 9, 9:18 PM EDT	Special Weather Statement	FFC	Houston	27 min
Jul 10, 12:15 PM EDT	Special Weather Statement	FFC	Barrow	45 min
Jul 10, 1:53 PM EDT	Special Weather Statement	FFC	Barrow	52 min
Jul 10, 2:55 PM EDT	Special Weather Statement	FFC	Pike	50 min
Jul 10, 3:11 PM EDT	Special Weather Statement	FFC	Wheeler	49 min
Jul 10, 4:05 PM EDT	Special Weather Statement	FFC	Dodge	40 min
Jul 10, 4:11 PM EDT	Special Weather Statement	FFC	Wilcox	34 min
Jul 10, 4:14 PM EDT	Special Weather Statement	FFC	Hancock	46 min
Jul 10, 5:38 PM EDT	Special Weather Statement	FFC	Wilkes	37 min
Jul 10, 5:42 PM EDT	Special Weather Statement	FFC	Newton	33 min
Jul 10, 6:15 PM EDT	Special Weather Statement	FFC	Newton	30 min
Jul 10, 6:24 PM EDT	Special Weather Statement	FFC	Taylor	36 min
Jul 10, 6:39 PM EDT	Special Weather Statement	FFC	Newton, Rockdale	51 min
Jul 10, 6:44 PM EDT	Special Weather Statement	FFC	Bibb	46 min
Jul 10, 6:55 PM EDT	Special Weather Statement	FFC	Muscogee	35 min
Jul 10, 7:05 PM EDT	Special Weather Statement	FFC	Rockdale	25 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017 Every 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.