Alert archive / Georgia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 285, NWS Atlanta, GA

December 29, 20165 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Dec 29, 2016, 3:38 AM EST for 5 counties in Georgia. It was in force for 37 min. 5 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
Dec 29, 2016, 3:38 AM EST (08:38 UTC)
Expired
Dec 29, 2016, 4:15 AM EST
In force
37 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Banks County, GA, Barrow County, GA, Clarke County, GA, Hall County, GA, Jackson County, GA

The radar

The Atlanta radar (KFFC), 123 km from the middle of the area, began a volume at 08:40 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

TimeReportWhereRemark
Dec 29, 4:00 AM ESTTSTM WND DMG1 S Jefferson, GASEVERAL TREES AND POWER LINES DOWN IN THE AREA OF MAGNOLIA AVENUE AND DAVID STREET IN JEFFERSON GA. HOMES WERE ALSO DAMAGED AND TIN WAS BLOWN OFF A ROOF.
Dec 29, 4:00 AM ESTTSTM WND DMG1 S Jefferson, GAALL LANES BLOCKED ON SR 82 AT FAIRLANE DR DUE TO TREES DOWN ACROSS THE ROAD IN THE SOUTH PART OF JEFFERSON. GA POWER ALSO REPORTING APPROXIMATELY 1000 WITHOUT POWER IN THAT SAME AREA.
Dec 29, 4:15 AM ESTTSTM WND DMG1 S Jefferson, GASEVERAL TREES AND POWER LINES DOWN IN THE AREA OF MAGNOLIA AVENUE AND DAVID STREET IN JEFFERSON GA. HOMES WERE ALSO DAMAGED AND TIN WAS BLOWN OFF A ROOF.
Dec 29, 4:15 AM ESTTSTM WND DMG1 S Jefferson, GAALL LANES BLOCKED ON SR 82 AT FAIRLANE DR DUE TO TREES DOWN ACROSS THE ROAD IN THE SOUTH PART OF JEFFERSON. GA POWER ALSO REPORTING APPROXIMATELY 1000 WITHOUT POWER IN THAT SAME AREA.
Dec 29, 4:15 AM ESTTSTM WND DMG1 W Thyatira, GASEVERAL TREES AND POWER LINES DOWN IN THE AREA OF MAGNOLIA AVENUE AND DAVID STREET IN JEFFERSON GA. HOMES WERE ALSO DAMAGED AND TIN WAS BLOWN OFF A ROOF.

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 00:00Z, 8.6 hours before the alert went out and 118 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 00:00Z on 2016-12-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2016-12-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1139 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

749 
WUUS52 KFFC 290838
SVRFFC
GAC011-013-059-139-157-290915-
/O.NEW.KFFC.SV.W.0285.161229T0838Z-161229T0915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
338 AM EST THU DEC 29 2016

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  South central Hall County in north central Georgia...
  Southeastern Banks County in northeastern Georgia...
  Jackson County in northeastern Georgia...
  North central Clarke County in northeastern Georgia...
  Northern Barrow County in north central Georgia...

* Until 415 AM EST

* At 337 AM EST, a severe thunderstorm was located near Flowery
  Branch, or 11 miles south of Gainesville, moving east at 45 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Jefferson, Commerce, Braselton, Flowery Branch, Arcade, Nicholson,
  Hoschton, Pendergrass, Talmo, Athens-Clarke County, Apple Valley,
  Chateau Elan, Peach State Speedway, James Holland Youth Sports
  Cmpx, Road Atlanta-Lanier Speedway, Thompsons Mill and Chestnut
  Mountain.

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 3421 8337 3420 8340 3417 8338 3399 8340
      3409 8384 3412 8382 3412 8383 3410 8387
      3412 8394 3419 8395 3424 8337
TIME...MOT...LOC 0837Z 274DEG 40KT 3414 8389 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$
2 follow-up statements
067 
WWUS52 KFFC 290854
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
354 AM EST THU DEC 29 2016

GAC013-059-139-290903-
/O.CAN.KFFC.SV.W.0285.000000T0000Z-161229T0915Z/
Hall GA-Clarke GA-Barrow GA-
354 AM EST THU DEC 29 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL HALL...NORTH
CENTRAL CLARKE AND NORTHERN BARROW 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 3421 8337 3420 8340 3417 8338 3402 8342
      3401 8342 3409 8379 3410 8379 3411 8382
      3415 8379 3421 8372 3424 8337
TIME...MOT...LOC 0853Z 274DEG 40KT 3413 8367 

$$

GAC011-157-290915-
/O.CON.KFFC.SV.W.0285.000000T0000Z-161229T0915Z/
Banks GA-Jackson GA-
354 AM EST THU DEC 29 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 AM EST
FOR SOUTHEASTERN BANKS AND JACKSON COUNTIES...

At 353 AM EST, a severe thunderstorm was located over Pendergrass, or
near Jefferson, moving east at 45 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated.

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

Locations impacted include...
Jefferson, Commerce, Braselton, Arcade, Nicholson, Hoschton,
Pendergrass, Talmo, Apple Valley, Peach State Speedway and Thompsons
Mill.

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 3421 8337 3420 8340 3417 8338 3402 8342
      3401 8342 3409 8379 3410 8379 3411 8382
      3415 8379 3421 8372 3424 8337
TIME...MOT...LOC 0853Z 274DEG 40KT 3413 8367 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$
315 
WWUS52 KFFC 290908
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
408 AM EST THU DEC 29 2016

GAC011-290917-
/O.CAN.KFFC.SV.W.0285.000000T0000Z-161229T0915Z/
Banks GA-
408 AM EST THU DEC 29 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BANKS COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of
the warned area.Therefore, the warning has been cancelled.

LAT...LON 3418 8339 3417 8338 3404 8342 3403 8346
      3405 8354 3410 8358 3414 8355 3416 8351
      3418 8342
TIME...MOT...LOC 0907Z 274DEG 40KT 3412 8347 

$$

GAC157-290915-
/O.CON.KFFC.SV.W.0285.000000T0000Z-161229T0915Z/
Jackson GA-
408 AM EST THU DEC 29 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 AM EST
FOR SOUTHEASTERN JACKSON COUNTY...

At 407 AM EST, a severe thunderstorm was located over Nicholson, or
near Jefferson, moving east at 45 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Jefferson, Arcade, Nicholson and Apple Valley. 

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 3418 8339 3417 8338 3404 8342 3403 8346
      3405 8354 3410 8358 3414 8355 3416 8351
      3418 8342
TIME...MOT...LOC 0907Z 274DEG 40KT 3412 8347 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 29, 12:14 AM ESTSpecial Weather StatementFFCCatoosa, Dade, Walker46 min
Dec 29, 12:44 AM ESTSpecial Weather StatementFFCMurray, Whitfield31 min
Dec 29, 3:06 AM ESTSpecial Weather StatementFFCForsyth24 min
Dec 29, 3:18 AM ESTSpecial Weather StatementFFCGwinnett27 min
Dec 29, 3:31 AM ESTSpecial Weather StatementFFCJackson29 min
Dec 29, 4:12 AM ESTSpecial Weather StatementFFCClarke, Oglethorpe33 min
Dec 29, 4:26 AM ESTSpecial Weather StatementFFCMadison34 min
Dec 29, 4:35 AM ESTSpecial Weather StatementFFCCoweta25 min
Dec 29, 5:13 AM ESTSpecial Weather StatementFFCNewton32 min
Dec 29, 5:30 AM ESTSpecial Weather StatementFFCOglethorpe30 min
Dec 29, 5:52 AM ESTSpecial Weather StatementFFCPutnam23 min
Dec 29, 7:20 AM ESTSpecial Weather StatementFFCHancock25 min
Dec 29, 7:28 AM ESTSpecial Weather StatementFFCCrawford32 min
Dec 29, 8:01 AM ESTSpecial Weather StatementFFCGlascock, Jefferson29 min
Dec 29, 8:07 AM ESTSpecial Weather StatementFFCHancock23 min
Dec 29, 8:14 AM ESTSpecial Weather StatementFFCTalbot31 min
Dec 29, 8:27 AM ESTTornado WarningFFCMarion, Talbot19 min
Dec 29, 9:06 AM ESTTornado WarningFFCMacon, Taylor24 min
Dec 29, 9:32 AM ESTSevere Thunderstorm WarningFFCHouston, Macon28 min
Dec 29, 10:05 AM ESTSpecial Weather StatementFFCPulaski25 min
Dec 29, 10:34 AM ESTSpecial Weather StatementFFCLaurens26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.