Alert archive / Georgia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 9, NWS Atlanta, GA

March 19, 2018Houston County, Macon County, Peach County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 19, 2018, 6:02 PM EDT for Houston County, Macon County, Peach County, Georgia. It was in force for 28 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: Mar 19, 2018, 6:02 PM EDT (22:02 UTC)
Expired: Mar 19, 2018, 6:30 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Houston County, GA, Macon County, GA, Peach County, GA

The radar

The Robins AFB radar (KJGX), 64 km from the middle of the area, began a volume at 22:03 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
Mar 19, 6:08 PM EDT	HAIL 0.7	2 Se Winchester, GA	DIME SIZED HAIL WAS REPORTED ALONG SOUTH STREET NEAR WINCHESTER.
Mar 19, 6:30 PM EDT	HAIL 1.75	1 Ese Henderson, GA	ESTIMATED GOLFBALL HAIL REPORT OFF I-75 AT THE TWIN OAK RV PARK. EMPLOYEE STATED THERE WAS A LOT OF IT.

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, 10.0 hours before the alert went out and 121 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 531 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

096 
WUUS52 KFFC 192202
SVRFFC
GAC153-193-225-192230-
/O.NEW.KFFC.SV.W.0009.180319T2202Z-180319T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
602 PM EDT MON MAR 19 2018

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northeastern Macon County in west central Georgia...
  South central Peach County in central Georgia...
  Southwestern Houston County in central Georgia...

* Until 630 PM EDT

* At 602 PM EDT, a severe thunderstorm was located over Whitewater
  State Park, or near Oglethorpe, moving east at 35 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...
  Perry, Marshallville, Saint Louis, Whitewater State Park, Moss Oak,
  Meadowdale, Houston Lake, Grovania, Elko, Winchester, Grove Park
  and Henderson.

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 3234 8414 3243 8413 3252 8364 3229 8367
TIME...MOT...LOC 2202Z 274DEG 31KT 3239 8406 

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 19, 12:14 PM EDT	Special Weather Statement	FFC	Gilmer	31 min
Mar 19, 12:44 PM EDT	Special Weather Statement	FFC	Lumpkin	31 min
Mar 19, 1:11 PM EDT	Special Weather Statement	FFC	Lumpkin, White	34 min
Mar 19, 5:00 PM EDT	Special Weather Statement	FFC	Crisp, Sumter	30 min
Mar 19, 5:03 PM EDT	Special Weather Statement	FFC	Carroll	27 min
Mar 19, 5:14 PM EDT	Severe Thunderstorm Warning	FFC	Crisp, Dooly, Sumter	31 min
Mar 19, 5:15 PM EDT	Severe Thunderstorm Warning	FFC	Marion, Schley, Taylor	30 min
Mar 19, 5:34 PM EDT	Special Weather Statement	FFC	Crisp, Wilcox	26 min
Mar 19, 5:38 PM EDT	Special Weather Statement	FFC	Dade	37 min
Mar 19, 5:44 PM EDT	Severe Thunderstorm Warning	FFC	Crisp, Dooly, Pulaski, Wilcox	31 min
Mar 19, 5:47 PM EDT	Special Weather Statement	FFC	Macon	28 min
Mar 19, 6:01 PM EDT	Special Weather Statement	FFC	Catoosa	29 min
Mar 19, 6:06 PM EDT	Severe Thunderstorm Warning	FFC	Houston, Pulaski	24 min
Mar 19, 6:18 PM EDT	Special Weather Statement	FFC	Bleckley	27 min
Mar 19, 6:28 PM EDT	Severe Thunderstorm Warning	FFC	Dooly, Houston, Pulaski	32 min
Mar 19, 6:36 PM EDT	Special Weather Statement	FFC	Lamar, Monroe	24 min
Mar 19, 6:43 PM EDT	Special Weather Statement	FFC	Laurens	32 min
Mar 19, 7:00 PM EDT	Special Weather Statement	FFC	Pulaski	30 min
Mar 19, 7:02 PM EDT	Special Weather Statement	FFC	Johnson	28 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2018 Every severe thunderstorm warning in 2018

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.