Alert archive / Florida / Tornado Warnings in 2014

Tornado Warning 13, NWS Jacksonville, FL

November 17, 2014Nassau County, Florida; Camden County, Georgia

NWS Jacksonville, FL issued this tornado warning at Nov 17, 2014, 1:22 PM EST for Nassau County, Florida; Camden County, Georgia. It was in force for 23 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: Nov 17, 2014, 1:22 PM EST (18:22 UTC)
Expired: Nov 17, 2014, 1:45 PM EST
In force: 23 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Nassau County, FL, Camden County, GA

The radar

The Jacksonville radar (KJAX), 35 km from the middle of the area, began a volume at 18:21 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
Nov 17, 1:25 PM EST	TSTM WND GST 46	Kings Bay Base, GA	A THUNDERSTORM WIND GUST OF 47 MPH WAS MEASURED AT KINGS BAY.
Nov 17, 1:25 PM EST	TSTM WND GST 46.5	Kings Bay Base, GA	A THUNDERSTORM WIND GUST OF 47 MPH WAS MEASURED AT KINGS BAY.
Nov 17, 1:26 PM EST	TSTM WND GST 49	5 W Fernandina Beach, FL	A MESONET SITE MEASURED A GUST TO 49 MPH.
Nov 17, 1:30 PM EST	TSTM WND GST 46	5 S Dungeness, FL	THE FERNANDINA NOS TIDE GAUGE STATION MEASURED A GUST TO 46 MPH.
Nov 17, 1:35 PM EST	TSTM WND DMG	St. Marys, GA	BROADCAST MEDIA REPORTING NUMEROUS TREES DOWN IN THE ST. MARYS VICINITY...SOME OF WHICH HAVE FALLEN ON HOMES AND PARKED CARS. TIME IS ESTIMATED BASED ON RADAR IMAGERY AND WIND GUSTS REPORTED IN THE VICINITY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 17, 10:57 AM EST	Tornado Watch	SPC	4 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 6.4 hours before the alert went out and 34 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: 177 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 703 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 214 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

450 
WFUS52 KJAX 171822
TORJAX
FLC089-GAC039-171845-
/O.NEW.KJAX.TO.W.0013.141117T1822Z-141117T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
122 PM EST MON NOV 17 2014

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN CAMDEN COUNTY IN SOUTHEAST GEORGIA
  EASTERN NASSAU COUNTY IN NORTHEAST FLORIDA

* UNTIL 145 PM EST

* AT 122 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  ST. MARYS...MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KINGS
  BAY BASE...FERNANDINA BEACH AND DUNGENESS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR
HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER
YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 PM EST MONDAY AFTERNOON
FOR NORTHERN FLORIDA AND SOUTHEAST GEORGIA. A TORNADO WATCH ALSO
REMAINS IN EFFECT UNTIL 600 PM EST MONDAY EVENING FOR NORTHEASTERN
FLORIDA AND SOUTHEAST GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL 800 PM EST MONDAY EVENING FOR NORTHERN FLORIDA.

&&

LAT...LON 3065 8142 3061 8158 3075 8164 3079 8156
      3083 8143 3082 8143 3080 8145 3075 8145
      3072 8144 3070 8142
TIME...MOT...LOC 1822Z 250DEG 41KT 3072 8150

$$

SHASHY

1 follow-up statement

072 
WWUS52 KJAX 171836
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
136 PM EST MON NOV 17 2014

FLC089-GAC039-171846-
/O.EXP.KJAX.TO.W.0013.000000T0000Z-141117T1845Z/
CAMDEN GA-NASSAU FL-
136 PM EST MON NOV 17 2014

...THE TORNADO WARNING FOR EASTERN NASSAU AND SOUTHEASTERN CAMDEN
COUNTIES WILL EXPIRE AT 145 PM EST...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL
WEATHER SERVICE IN JACKSONVILLE DIRECTLY AT 800-499-1594 TO REPORT
SEVERE WEATHER.

LAT...LON 3065 8142 3061 8158 3075 8164 3079 8156
      3083 8143 3082 8143 3080 8145 3075 8145
      3072 8144 3070 8142
TIME...MOT...LOC 1836Z 250DEG 41KT 3078 8132

$$

SHASHY

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 16, 8:36 PM EST	Small Craft Advisory	JAX		55 hr
Nov 17, 2:56 AM EST	Freeze Watch	JAX	Flagler	35 hr
Nov 17, 2:56 AM EST	Hard Freeze Watch	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	25 hr
Nov 17, 11:09 AM EST	Special Weather Statement	JAX	Hamilton	36 min
Nov 17, 11:23 AM EST	Severe Thunderstorm Warning	JAX	Columbia, Hamilton, Suwannee	52 min
Nov 17, 11:51 AM EST	Special Weather Statement	JAX	Gilchrist	39 min
Nov 17, 11:54 AM EST	Special Weather Statement	JAX	Baker	51 min
Nov 17, 12:06 PM EST	Severe Thunderstorm Warning	JAX	Alachua, Baker, Bradford, Columbia, Gilchrist, Suwannee and 1 more	54 min
Nov 17, 12:28 PM EST	Special Weather Statement	JAX	Nassau	47 min
Nov 17, 12:43 PM EST	Tornado Warning	JAX	Baker, Bradford, Columbia, Union	32 min
Nov 17, 12:47 PM EST	Severe Thunderstorm Warning	JAX	Alachua, Baker, Bradford, Clay, Duval, Gilchrist and 2 more	58 min
Nov 17, 1:00 PM EST	Special Weather Statement	JAX	Nassau	45 min
Nov 17, 1:03 PM EST	Special Marine Warning	JAX		117 min
Nov 17, 1:06 PM EST	Tornado Warning	JAX	Clay, Duval	54 min
Nov 17, 1:19 PM EST	Severe Thunderstorm Warning	JAX	Nassau	26 min
Nov 17, 1:25 PM EST	Severe Thunderstorm Warning	JAX	Alachua, Bradford, Clay, Flagler, Marion, Putnam and 1 more	65 min
Nov 17, 2:28 PM EST	Severe Thunderstorm Warning	JAX	Flagler, Marion, Putnam, Saint Johns	32 min
Nov 17, 2:57 PM EST	Special Marine Warning	JAX		63 min
Nov 17, 10:04 AM EST	Special Weather Statement	JAX	Coffee, Jeff Davis	26 min
Nov 17, 10:30 AM EST	Severe Thunderstorm Warning	JAX	Appling, Bacon, Coffee	45 min
Nov 17, 10:52 AM EST	Special Weather Statement	JAX	Echols	38 min
Nov 17, 11:20 AM EST	Special Weather Statement	JAX	Ware	25 min
Nov 17, 11:50 AM EST	Special Weather Statement	JAX	Atkinson	25 min
Nov 17, 11:57 AM EST	Severe Thunderstorm Warning	JAX	Atkinson, Clinch, Pierce, Ware	48 min
Nov 17, 12:17 PM EST	Special Weather Statement	JAX	Bacon, Wayne	43 min
Nov 17, 1:31 PM EST	Special Weather Statement	JAX	Wayne	29 min

Nearby

Tornado Warnings in Florida, 2014 Tornado Warnings in Georgia, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.