Alert archive / Florida / Tornado Warnings in 2016

Tornado Warning 16, NWS Jacksonville, FL

October 7, 2016Nassau County, Florida; Camden County, Georgia

NWS Jacksonville, FL issued this tornado warning at Oct 7, 2016, 10:36 AM EDT for Nassau County, Florida; Camden County, Georgia. It was in force for 24 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
Oct 7, 2016, 10:36 AM EDT (14:36 UTC)
Expired
Oct 7, 2016, 11:00 AM EDT
In force
24 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Nassau County, FL, Camden County, GA

The radar

The Jacksonville radar (KJAX), 16 km from the middle of the area, began a volume at 14:38 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, 2.6 hours before the alert went out and 15 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 2016-10-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 94 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 2016-10-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 429 square meters per square second.19395878Sfc1 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
94 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
518 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
429 m²/s²
0-3 km storm-relative helicity
423 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted.

917 
WFUS52 KJAX 071436
TORJAX
FLC089-GAC039-071500-
/O.NEW.KJAX.TO.W.0016.161007T1436Z-161007T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1036 AM EDT FRI OCT 7 2016

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN NASSAU COUNTY IN NORTHEASTERN FLORIDA...
  SOUTHEASTERN CAMDEN COUNTY IN SOUTHEASTERN GEORGIA...

* UNTIL 1100 AM EDT
    
* AT 1036 AM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 8 MILES EAST OF KINGS BAY BASE...MOVING
  SOUTHWEST AT 60 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...
  FERNANDINA BEACH AND KINGS BAY BASE AROUND 1045 AM EDT. 
  ST. MARYS AND YULEE AROUND 1050 AM EDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM 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 3079 8142 3068 8141 3057 8161 3058 8160
      3058 8165 3055 8166 3057 8167 3056 8172
      3054 8174 3054 8176 3051 8178 3047 8183
      3070 8197 3090 8140
TIME...MOT...LOC 1436Z 062DEG 51KT 3082 8137 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

SHULER
1 follow-up statement
296 
WWUS52 KJAX 071453
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1053 AM EDT FRI OCT 7 2016

FLC089-GAC039-071503-
/O.EXP.KJAX.TO.W.0016.000000T0000Z-161007T1500Z/
NASSAU FL-CAMDEN GA-
1053 AM EDT FRI OCT 7 2016

...THE TORNADO WARNING FOR NORTHERN NASSAU AND SOUTHEASTERN CAMDEN
COUNTIES WILL EXPIRE AT 1100 AM EDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY WINDS
ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3079 8142 3068 8141 3057 8161 3058 8160
      3058 8165 3055 8166 3057 8167 3056 8172
      3054 8174 3054 8176 3051 8178 3047 8183
      3070 8197 3090 8140
TIME...MOT...LOC 1453Z 062DEG 51KT 3072 8160 

$$

SHULER

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 7, 10:53 AM EDTAreal Flood WarningJAXClay, Flagler, Putnam, Saint Johns6 hr
Oct 7, 11:33 AM EDTAreal Flood WarningJAXDuval, Nassau, Saint Johns9 hr
Oct 7, 12:43 PM EDTFlash Flood WarningJAXDuval9 hr
Oct 7, 1:25 PM EDTAreal Flood WarningJAXNassau9 hr
Oct 7, 3:40 PM EDTFlash Flood Warning EmergencyJAXNassau6 hr
Oct 7, 4:32 PM EDTAreal Flood WarningJAXSaint Johns3 hr
Oct 7, 7:53 PM EDTAreal Flood WarningJAXBrantley, Charlton, Pierce, Wayne3 hr

Nearby

Tornado Warnings in Florida, 2016Tornado Warnings in Georgia, 2016Every tornado warning in 2016Tornadoes 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.