Alert archive / Georgia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 262, NWS Atlanta, GA

September 11, 2016Jasper County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 11, 2016, 3:37 PM EDT for Jasper County, Georgia. It was in force for 27 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
Sep 11, 2016, 3:37 PM EDT (19:37 UTC)
Expired
Sep 11, 2016, 4:04 PM EDT
In force
27 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Jasper County, GA

The radar

The Robins AFB radar (KJGX), 79 km from the middle of the area, began a volume at 19:39 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, 7.6 hours before the alert went out and 84 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 2016-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 197 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 2016-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.193958Sfc1 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
197 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
1358 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

396 
WUUS52 KFFC 111937
SVRFFC
GAC159-112015-
/O.NEW.KFFC.SV.W.0262.160911T1937Z-160911T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
337 PM EDT SUN SEP 11 2016

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN JASPER COUNTY IN CENTRAL GEORGIA...

* UNTIL 415 PM EDT

* AT 337 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  MONTICELLO... AND IS NEARLY STATIONARY.

  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. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MONTICELLO...SHADY DALE AND CALVIN. 

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 3339 8354 3324 8354 3322 8366 3338 8375
      3347 8360 3343 8353
TIME...MOT...LOC 1937Z 253DEG 3KT 3333 8363 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
335 
WWUS52 KFFC 112004
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
404 PM EDT SUN SEP 11 2016

GAC159-112013-
/O.CAN.KFFC.SV.W.0262.000000T0000Z-160911T2015Z/
JASPER GA-
404 PM EDT SUN SEP 11 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JASPER COUNTY IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER HEAVY RAIN IS
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3339 8354 3324 8354 3322 8366 3338 8375
      3347 8360 3343 8353
TIME...MOT...LOC 1959Z 253DEG 3KT 3334 8360 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 3:31 PM EDTSpecial Weather StatementFFCJasper29 min
Sep 11, 3:48 PM EDTSpecial Weather StatementFFCSpalding27 min
Sep 11, 3:52 PM EDTSpecial Weather StatementFFCLamar, Pike, Spalding23 min
Sep 11, 4:08 PM EDTSpecial Weather StatementFFCButts37 min
Sep 11, 4:28 PM EDTSpecial Weather StatementFFCJasper32 min
Sep 11, 4:37 PM EDTSpecial Weather StatementFFCWashington38 min
Sep 11, 5:24 PM EDTSpecial Weather StatementFFCTroup36 min
Sep 11, 5:36 PM EDTSpecial Weather StatementFFCBibb24 min
Sep 11, 6:16 PM EDTSpecial Weather StatementFFCWilkinson29 min
Sep 11, 7:05 PM EDTSpecial Weather StatementFFCMacon25 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2016Every severe thunderstorm warning in 2016

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.