Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 288, NWS Atlanta, GA

July 11, 2017Harris County, Talbot County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 11, 2017, 7:58 PM EDT for Harris County, Talbot County, Georgia. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 11, 2017, 7:58 PM EDT (23:58 UTC)
Expired: Jul 11, 2017, 8:26 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Harris County, GA, Talbot County, GA

The radar

The Atlanta radar (KFFC), 72 km from the middle of the area, began a volume at 00:00 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 12.0 hours before the alert went out and 75 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: 988 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 710 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: -20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

815 
WUUS52 KFFC 112358
SVRFFC
GAC145-263-120045-
/O.NEW.KFFC.SV.W.0288.170711T2358Z-170712T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
758 PM EDT TUE JUL 11 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northwestern Talbot County in west central Georgia...
  Northeastern Harris County in west central Georgia...

* Until 845 PM EDT

* At 758 PM EDT, a severe thunderstorm was located near F.d.
  Roosevelt State Park, or near Hamilton, moving northeast at 10 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Hamilton, Pine Mountain, Waverly Hall, F.d. Roosevelt State Park
  and Flint Hill.

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 3267 8484 3285 8493 3283 8462 3266 8462
TIME...MOT...LOC 2358Z 244DEG 7KT 3279 8481 

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

1 follow-up statement

808 
WWUS52 KFFC 120026
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
826 PM EDT TUE JUL 11 2017

GAC145-263-120036-
/O.CAN.KFFC.SV.W.0288.000000T0000Z-170712T0045Z/
Talbot GA-Harris GA-
826 PM EDT TUE JUL 11 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TALBOT AND
NORTHEASTERN HARRIS COUNTIES 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 3267 8484 3285 8493 3283 8462 3266 8462
TIME...MOT...LOC 0023Z 244DEG 7KT 3281 8475 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 9:02 PM EDT	Special Weather Statement	FFC	Barrow	28 min
Jul 11, 9:04 AM EDT	Special Weather Statement	FFC	Schley	41 min
Jul 11, 2:03 PM EDT	Special Weather Statement	FFC	Wheeler	27 min
Jul 11, 2:25 PM EDT	Special Weather Statement	FFC	Telfair	50 min
Jul 11, 2:27 PM EDT	Special Weather Statement	FFC	Hall	48 min
Jul 11, 2:36 PM EDT	Special Weather Statement	FFC	Cobb	39 min
Jul 11, 2:47 PM EDT	Special Weather Statement	FFC	DeKalb	28 min
Jul 11, 2:50 PM EDT	Special Weather Statement	FFC	Taylor	40 min
Jul 11, 3:03 PM EDT	Special Weather Statement	FFC	Carroll	42 min
Jul 11, 3:11 PM EDT	Special Weather Statement	FFC	Cherokee	49 min
Jul 11, 3:14 PM EDT	Special Weather Statement	FFC	Montgomery	46 min
Jul 11, 3:19 PM EDT	Special Weather Statement	FFC	Wilkinson	26 min
Jul 11, 3:28 PM EDT	Special Weather Statement	FFC	Taylor	47 min
Jul 11, 3:46 PM EDT	Special Weather Statement	FFC	Jefferson	29 min
Jul 11, 3:51 PM EDT	Special Weather Statement	FFC	Forsyth	24 min
Jul 11, 4:12 PM EDT	Severe Thunderstorm Warning	FFC	Forsyth, Gwinnett	33 min
Jul 11, 4:19 PM EDT	Special Weather Statement	FFC	Webster	26 min
Jul 11, 4:31 PM EDT	Special Weather Statement	FFC	Clayton	44 min
Jul 11, 4:46 PM EDT	Special Weather Statement	FFC	Gwinnett	29 min
Jul 11, 4:50 PM EDT	Special Weather Statement	FFC	Marion	40 min
Jul 11, 4:58 PM EDT	Special Weather Statement	FFC	Clayton, Fayette, Rockdale	47 min
Jul 11, 5:02 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Fulton	28 min
Jul 11, 5:16 PM EDT	Severe Thunderstorm Warning	FFC	Gwinnett, Rockdale, Walton	17 min
Jul 11, 5:34 PM EDT	Severe Thunderstorm Warning	FFC	Douglas	15 min
Jul 11, 5:43 PM EDT	Severe Thunderstorm Warning	FFC	Rockdale	11 min
Jul 11, 5:56 PM EDT	Special Weather Statement	FFC	Johnson	34 min
Jul 11, 6:12 PM EDT	Special Weather Statement	FFC	Telfair	48 min
Jul 11, 6:14 PM EDT	Special Weather Statement	FFC	Johnson	31 min
Jul 11, 6:20 PM EDT	Special Weather Statement	FFC	Troup	40 min
Jul 11, 6:23 PM EDT	Special Weather Statement	FFC	Butts, Henry, Meriwether, Newton, Pike, Spalding	52 min
Jul 11, 6:30 PM EDT	Special Weather Statement	FFC	Johnson	45 min
Jul 11, 6:39 PM EDT	Severe Thunderstorm Warning	FFC	Troup	25 min
Jul 11, 6:52 PM EDT	Special Weather Statement	FFC	Jefferson	38 min
Jul 11, 7:08 PM EDT	Special Weather Statement	FFC	Troup	37 min
Jul 11, 7:09 PM EDT	Special Weather Statement	FFC	Dooly	36 min
Jul 11, 7:12 PM EDT	Special Weather Statement	FFC	Butts, Jasper, Pike, Spalding	33 min
Jul 11, 7:24 PM EDT	Special Weather Statement	FFC	Muscogee	36 min
Jul 11, 7:36 PM EDT	Severe Thunderstorm Warning	FFC	Harris, Muscogee	13 min
Jul 11, 7:44 PM EDT	Special Weather Statement	FFC	Butts, Lamar, Pike	46 min
Jul 11, 7:48 PM EDT	Special Weather Statement	FFC	Troup	87 min
Jul 11, 7:52 PM EDT	Special Weather Statement	FFC	Meriwether	23 min
Jul 11, 7:54 PM EDT	Special Weather Statement	FFC	Harris	36 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.