Alert archive / Georgia / Tornado Warnings in 2018

Tornado Warning 24, NWS Jacksonville, FL

December 3, 2018Camden County, Glynn County, Georgia

NWS Jacksonville, FL issued this tornado warning at Dec 3, 2018, 7:13 AM EST for Camden County, Glynn County, Georgia. It was in force for 22 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: Dec 3, 2018, 7:13 AM EST (12:13 UTC)
Expired: Dec 3, 2018, 7:35 AM EST
In force: 22 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Camden County, GA, Glynn County, GA

The radar

The Jacksonville radar (KJAX), 56 km from the middle of the area, began a volume at 12:15 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

Jacksonville, FL (KJAX), launched 12:00Z, 0.2 hours before the alert went out and 55 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: 1329 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 504 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 240 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

As transmitted.

553 
WFUS52 KJAX 031213
TORJAX
GAC039-127-031245-
/O.NEW.KJAX.TO.W.0024.181203T1213Z-181203T1245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
713 AM EST MON DEC 3 2018

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  East central Camden County in southeastern Georgia...
  South central Glynn County in southeastern Georgia...

* Until 745 AM EST.
    
* At 713 AM EST, a severe thunderstorm capable of producing a tornado
  was located 9 miles north of Kings Bay Base, moving east at 20 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic thunderstorm will remain over mainly rural areas of
  east central Camden and south central Glynn Counties, including the
  following locations... Dover Bluff, Cumberland Island and Harrietts
  Bluff.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 3097 8139 3083 8141 3086 8160 3101 8161
      3105 8138
TIME...MOT...LOC 1213Z 264DEG 18KT 3093 8153 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

SHASHY

2 follow-up statements

842 
WWUS52 KJAX 031219
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
719 AM EST MON DEC 3 2018

GAC127-031228-
/O.CAN.KJAX.TO.W.0024.000000T0000Z-181203T1245Z/
Glynn GA-
719 AM EST MON DEC 3 2018

...THE TORNADO WARNING FOR SOUTH CENTRAL GLYNN COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3093 8140 3083 8142 3090 8158 3099 8158
      3103 8143 3102 8143 3101 8142 3103 8141
      3104 8142 3104 8141 3105 8138
TIME...MOT...LOC 1218Z 260DEG 24KT 3094 8148 

$$

GAC039-031245-
/O.CON.KJAX.TO.W.0024.000000T0000Z-181203T1245Z/
Camden GA-
719 AM EST MON DEC 3 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 AM EST FOR EAST
CENTRAL CAMDEN COUNTY...
    
At 718 AM EST, a severe thunderstorm capable of producing a tornado
was located 9 miles southwest of Jekyll Island, or 10 miles north of
Kings Bay Base, moving east at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Cumberland Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3093 8140 3083 8142 3090 8158 3099 8158
      3103 8143 3102 8143 3101 8142 3103 8141
      3104 8142 3104 8141 3105 8138
TIME...MOT...LOC 1218Z 260DEG 24KT 3094 8148 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

SHASHY

132 
WWUS52 KJAX 031235
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
735 AM EST MON DEC 3 2018

GAC039-031243-
/O.CAN.KJAX.TO.W.0024.000000T0000Z-181203T1245Z/
Camden GA-
735 AM EST MON DEC 3 2018

...THE TORNADO WARNING FOR EAST CENTRAL CAMDEN COUNTY IS CANCELLED...
        
The storm which prompted the warning has weakened below severe 
limits, and has exited the warned area into the Atlantic where a 
special marine warning remains in effect. Therefore, the tornado 
warning has been cancelled. However gusty winds are still possible 
with this thunderstorm.

LAT...LON 3093 8140 3083 8142 3090 8158 3099 8158
      3103 8143 3102 8143 3101 8142 3103 8141
      3104 8142 3104 8141 3105 8138
TIME...MOT...LOC 1232Z 264DEG 18KT 3095 8139 

$$

SHASHY

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 2, 7:47 PM EST	Areal Flood Warning	JAX	Charlton, Clinch, Echols, Ware	6 hr
Dec 2, 8:14 PM EST	Special Weather Statement	JAX	Brantley	31 min
Dec 2, 9:05 PM EST	Areal Flood Advisory	JAX	Brantley, Glynn, Pierce, Wayne	115 min
Dec 2, 9:05 PM EST	River Flood Warning	JAX	Echols	18 days
Dec 3, 1:47 AM EST	Areal Flood Warning	JAX	Atkinson, Bacon, Brantley, Clinch, Echols, Pierce and 1 more	118 min
Dec 3, 3:11 AM EST	Tornado Warning	JAX	Clinch, Echols	34 min
Dec 3, 3:47 AM EST	Severe Thunderstorm Warning	JAX	Clinch, Echols	28 min
Dec 3, 4:10 AM EST	Special Weather Statement	JAX	Clinch	50 min
Dec 3, 5:29 AM EST	Special Weather Statement	JAX	Charlton	31 min
Dec 3, 5:43 AM EST	Special Weather Statement	JAX	Brantley	32 min
Dec 3, 5:57 AM EST	Severe Thunderstorm Warning	JAX	Brantley, Camden, Glynn	33 min
Dec 3, 6:04 AM EST	Special Weather Statement	JAX	Charlton	26 min
Dec 3, 6:16 AM EST	Tornado Warning	JAX	Camden, Glynn	29 min
Dec 3, 6:29 AM EST	Severe Thunderstorm Warning	JAX	Camden, Charlton, Glynn	46 min
Dec 3, 6:45 AM EST	Severe Thunderstorm Warning	JAX	Glynn	15 min
Dec 3, 11:22 AM EST	River Flood Warning	JAX	Brantley	47 days

Nearby

Tornado Warnings in Georgia, 2018 Every tornado warning in 2018 Tornadoes 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.