Alert archive / Georgia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 42, NWS Atlanta, GA

May 21, 20164 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 21, 2016, 3:44 PM EDT for 4 counties in Georgia. It was in force for 46 min. 1 report 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: May 21, 2016, 3:44 PM EDT (19:44 UTC)
Expired: May 21, 2016, 4:30 PM EDT
In force: 46 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bibb County, GA, Jones County, GA, Twiggs County, GA, Wilkinson County, GA

The radar

The Robins AFB radar (KJGX), 21 km from the middle of the area, began a volume at 19:44 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
May 21, 4:00 PM EDT	TSTM WND DMG	Terrell, GA	A TREE WAS BLOWN DOWN ACROSS THE ROAD NEAR 4904 JEFFERSONVILLE RD.

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, 7.7 hours before the alert went out and 111 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: 420 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 566 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

781 
WUUS52 KFFC 211944
SVRFFC
GAC021-169-289-319-212030-
/O.NEW.KFFC.SV.W.0042.160521T1944Z-160521T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
344 PM EDT SAT MAY 21 2016

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL BIBB COUNTY IN CENTRAL GEORGIA...
  SOUTHWESTERN WILKINSON COUNTY IN CENTRAL GEORGIA...
  CENTRAL TWIGGS COUNTY IN CENTRAL GEORGIA...
  SOUTH CENTRAL JONES COUNTY IN CENTRAL GEORGIA...

* UNTIL 430 PM EDT

* AT 344 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PAYNE...OR
  OVER MACON...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. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MACON...JEFFERSONVILLE...PAYNE...PAYNE
  CITY...MARION...WESLEYAN...DRY
  BRANCH...RUTLAND...FRANKLINTON...HUBER...GRISWOLDVILLE...MYRICKS
  MILL... FITZPATRICK...CROSS KEYS...RIPLEY AND SKIPPERTON.

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 3278 8379 3290 8375 3287 8333 3273 8320
      3262 8336
TIME...MOT...LOC 1944Z 285DEG 30KT 3281 8368 

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

1 follow-up statement

946 
WWUS52 KFFC 212010
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
410 PM EDT SAT MAY 21 2016

GAC021-169-212019-
/O.CAN.KFFC.SV.W.0042.000000T0000Z-160521T2030Z/
BIBB GA-JONES GA-
410 PM EDT SAT MAY 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BIBB AND SOUTH CENTRAL
JONES COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3269 8356 3270 8358 3277 8355 3281 8349
      3282 8350 3282 8349 3284 8351 3285 8350
      3288 8345 3287 8333 3273 8320 3262 8336
TIME...MOT...LOC 2009Z 285DEG 30KT 3275 8344 

$$

GAC289-319-212030-
/O.CON.KFFC.SV.W.0042.000000T0000Z-160521T2030Z/
WILKINSON GA-TWIGGS GA-
410 PM EDT SAT MAY 21 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR SOUTHWESTERN WILKINSON AND CENTRAL TWIGGS COUNTIES...

AT 409 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES NORTHWEST
OF JEFFERSONVILLE...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. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
JEFFERSONVILLE...MARION...FITZPATRICK...DRY BRANCH...RIPLEY...HUBER
AND MYRICKS MILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

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 3269 8356 3270 8358 3277 8355 3281 8349
      3282 8350 3282 8349 3284 8351 3285 8350
      3288 8345 3287 8333 3273 8320 3262 8336
TIME...MOT...LOC 2009Z 285DEG 30KT 3275 8344 

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
May 21, 12:58 PM EDT	Special Weather Statement	FFC	Newton, Rockdale	32 min
May 21, 1:28 PM EDT	Special Weather Statement	FFC	Newton	32 min
May 21, 1:55 PM EDT	Special Weather Statement	FFC	Jasper	35 min
May 21, 2:22 PM EDT	Special Weather Statement	FFC	Putnam	23 min
May 21, 2:54 PM EDT	Special Weather Statement	FFC	Jones	36 min
May 21, 3:04 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Jones	41 min
May 21, 3:31 PM EDT	Special Weather Statement	FFC	Bibb	29 min
May 21, 4:00 PM EDT	Special Weather Statement	FFC	Washington	45 min
May 21, 4:33 PM EDT	Special Weather Statement	FFC	Bleckley	27 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2016 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.