Alert archive / Georgia / Tornado Warnings in 2017

Tornado Warning 73, NWS Jacksonville, FL

June 7, 2017Glynn County, Georgia

NWS Jacksonville, FL issued this tornado warning at Jun 7, 2017, 6:50 PM EDT for Glynn County, Georgia. It was in force for 25 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 7, 2017, 6:50 PM EDT (22:50 UTC)
Expired
Jun 7, 2017, 7:15 PM EDT
In force
25 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Glynn County, GA

The radar

The Jacksonville radar (KJAX), 88 km from the middle of the area, began a volume at 22:51 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, 10.8 hours before the alert went out and 86 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, Jacksonville, FL at 12:00Z on 2017-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 693 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, Jacksonville, FL at 12:00Z on 2017-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 118 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
693 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
455 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
118 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.4

Open this sounding in Storm Lab

The text

As transmitted.

719 
WFUS52 KJAX 072250
TORJAX
GAC127-072315-
/O.NEW.KJAX.TO.W.0073.170607T2250Z-170607T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
650 PM EDT WED JUN 7 2017

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  Southeastern Glynn County in southeastern Georgia...

* Until 715 PM EDT
    
* At 650 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Sea Island, or near St. Simons Island, moving
  south at 15 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 dangerous storm will be near...
  St. Simons Island around 655 PM EDT. 
  Sea Island around 705 PM EDT. 

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 3119 8125 3110 8137 3101 8138 3101 8144
      3127 8145 3129 8139 3128 8138 3129 8138
      3130 8136 3130 8134 3128 8132 3128 8123
TIME...MOT...LOC 2250Z 348DEG 12KT 3123 8132 

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

$$

STRUBLE
2 follow-up statements
980 
WWUS52 KJAX 072304
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
704 PM EDT WED JUN 7 2017

GAC127-072315-
/O.CON.KJAX.TO.W.0073.000000T0000Z-170607T2315Z/
Glynn GA-
704 PM EDT WED JUN 7 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR EAST
CENTRAL GLYNN COUNTY...
    
At 703 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Sea Island, or near St. Simons Island, moving south
at 10 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 dangerous storm will be near...
  St. Simons Island around 710 PM EDT. 
  Sea Island around 715 PM EDT. 

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 3119 8125 3110 8137 3115 8142 3126 8141
      3129 8139 3128 8138 3129 8138 3130 8136
      3130 8134 3128 8132 3128 8123
TIME...MOT...LOC 2303Z 347DEG 7KT 3122 8132 

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

$$

STRUBLE
566 
WWUS52 KJAX 072313
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
713 PM EDT WED JUN 7 2017

GAC127-072323-
/O.EXP.KJAX.TO.W.0073.000000T0000Z-170607T2315Z/
Glynn GA-
713 PM EDT WED JUN 7 2017

...THE TORNADO WARNING FOR EAST CENTRAL GLYNN COUNTY WILL EXPIRE AT
715 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.  However gusty winds
are still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Jacksonville.

LAT...LON 3119 8125 3110 8137 3115 8142 3126 8141
      3129 8139 3128 8138 3129 8138 3130 8136
      3130 8134 3128 8132 3128 8123
TIME...MOT...LOC 2313Z 348DEG 12KT 3119 8131 

$$

STRUBLE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 3:37 AM EDTSpecial Weather StatementJAXEchols68 min
Jun 7, 3:47 AM EDTAreal Flood AdvisoryJAXEchols2 hr
Jun 7, 4:12 AM EDTSevere Thunderstorm WarningJAXClinch, Echols48 min
Jun 7, 5:01 AM EDTSpecial Weather StatementJAXCharlton44 min
Jun 7, 5:12 AM EDTAreal Flood AdvisoryJAXClinch, Echols, Ware2 hr
Jun 7, 6:39 AM EDTAreal Flood AdvisoryJAXCamden, Glynn2 hr
Jun 7, 12:38 PM EDTSpecial Weather StatementJAXCamden52 min
Jun 7, 2:27 PM EDTSevere Thunderstorm WarningJAXCharlton27 min

Nearby

Tornado Warnings in Georgia, 2017Every tornado warning in 2017Tornadoes in 2017

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.