Alert archive / Georgia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 113, NWS Atlanta, GA

June 9, 2018Sumter County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 9, 2018, 2:59 PM EDT for Sumter County, Georgia. It was in force for 46 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
Jun 9, 2018, 2:59 PM EDT (18:59 UTC)
Expired
Jun 9, 2018, 3:45 PM EDT
In force
46 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Sumter County, GA

The radar

The Robins AFB radar (KJGX), 115 km from the middle of the area, began a volume at 19:00 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, 7.0 hours before the alert went out and 156 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 2018-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 227 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 2018-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
227 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1197 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
-14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

075 
WUUS52 KFFC 091859
SVRFFC
GAC261-091945-
/O.NEW.KFFC.SV.W.0113.180609T1859Z-180609T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
259 PM EDT SAT JUN 9 2018

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southwestern Sumter County in west central Georgia...

* Until 345 PM EDT.

* At 259 PM EDT, a severe thunderstorm was located over Maddox, or
  over Americus, 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...
  Americus, Leslie, Sumter, Huntington, Maddox and Croxton
  Crossroads.

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 3192 8433 3209 8438 3209 8421 3191 8404
TIME...MOT...LOC 1859Z 346DEG 5KT 3203 8423 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
920 
WWUS52 KFFC 091927
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
327 PM EDT SAT JUN 9 2018

GAC261-091945-
/O.CON.KFFC.SV.W.0113.000000T0000Z-180609T1945Z/
Sumter GA-
327 PM EDT SAT JUN 9 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR SOUTHWESTERN SUMTER COUNTY...

At 326 PM EDT, a severe thunderstorm was located over Maddox, or near
Americus, 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...
Americus, Leslie, Huntington and Maddox. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3209 8438 3209 8421 3191 8404 3192 8421
TIME...MOT...LOC 1926Z 346DEG 5KT 3199 8422 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 1:36 PM EDTSpecial Weather StatementFFCHeard24 min
Jun 9, 1:53 PM EDTSevere Thunderstorm WarningFFCCarroll, Coweta, Heard52 min
Jun 9, 2:03 PM EDTSevere Thunderstorm WarningFFCWebster27 min
Jun 9, 2:29 PM EDTSpecial Weather StatementFFCMarion46 min
Jun 9, 2:32 PM EDTSpecial Weather StatementFFCWebster43 min
Jun 9, 2:44 PM EDTSpecial Weather StatementFFCCoweta46 min
Jun 9, 2:48 PM EDTSpecial Weather StatementFFCSumter42 min
Jun 9, 2:50 PM EDTSpecial Weather StatementFFCStewart40 min
Jun 9, 3:01 PM EDTSevere Thunderstorm WarningFFCChattahoochee, Marion, Stewart, Webster44 min
Jun 9, 3:19 PM EDTSpecial Weather StatementFFCFayette41 min
Jun 9, 3:33 PM EDTSevere Thunderstorm WarningFFCStewart42 min
Jun 9, 3:51 PM EDTSpecial Weather StatementFFCSpalding39 min
Jun 9, 4:03 PM EDTSpecial Weather StatementFFCCrisp42 min
Jun 9, 4:16 PM EDTSpecial Weather StatementFFCMuscogee44 min
Jun 9, 4:19 PM EDTSevere Thunderstorm WarningFFCMuscogee41 min
Jun 9, 4:20 PM EDTSpecial Weather StatementFFCHarris25 min
Jun 9, 4:48 PM EDTSpecial Weather StatementFFCHarris27 min
Jun 9, 4:56 PM EDTSpecial Weather StatementFFCUpson34 min
Jun 9, 5:18 PM EDTSpecial Weather StatementFFCLaurens27 min
Jun 9, 5:27 PM EDTSpecial Weather StatementFFCWilcox48 min
Jun 9, 6:17 PM EDTSpecial Weather StatementFFCCrawford43 min
Jun 9, 6:42 PM EDTSpecial Weather StatementFFCMontgomery, Telfair, Wheeler48 min
Jun 9, 7:04 PM EDTSpecial Weather StatementFFCBibb41 min
Jun 9, 7:34 PM EDTSpecial Weather StatementFFCJefferson26 min
Jun 9, 7:46 PM EDTSpecial Weather StatementFFCJones29 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2018Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.