Alert archive / Florida / Tornado Warnings in 2013

Tornado Warning 13, NWS Jacksonville, FL

September 24, 2013Marion County, Florida

NWS Jacksonville, FL issued this tornado warning at Sep 24, 2013, 4:58 PM EDT for Marion County, Florida. It was in force for 32 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: Sep 24, 2013, 4:58 PM EDT (20:58 UTC)
Expired: Sep 24, 2013, 5:30 PM EDT
In force: 32 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

County Marion County, FL

The radar

The Jacksonville radar (KJAX), 149 km from the middle of the area, began a volume at 20:58 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, 9.0 hours before the alert went out and 150 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: 442 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 508 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: -17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

762 
WFUS52 KJAX 242058
TORJAX
FLC083-242130-
/O.NEW.KJAX.TO.W.0013.130924T2058Z-130924T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
458 PM EDT TUE SEP 24 2013

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL MARION COUNTY IN NORTHERN FLORIDA

* UNTIL 530 PM EDT

* AT 458 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6
  MILES NORTHWEST OF OCALA AIRPORT...MOVING EAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OCALA
  AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

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.

&&

LAT...LON 2930 8214 2911 8217 2916 8238 2928 8235
TIME...MOT...LOC 2058Z 285DEG 11KT 2921 8230

$$

ZIBURA

1 follow-up statement

804 
WWUS52 KJAX 242121
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
521 PM EDT TUE SEP 24 2013

FLC083-242130-
/O.CAN.KJAX.TO.W.0013.000000T0000Z-130924T2130Z/
MARION FL-
521 PM EDT TUE SEP 24 2013

...THE TORNADO WARNING FOR CENTRAL MARION COUNTY IS CANCELLED...

DOPPLER RADAR SHOWS ROTATION HAS WEAKENED NEAR THE OCALA AIRPORT. 
STRONG WINDS AND HEAVY RAINFALL ARE STILL POSSIBLE WITH THIS STORM. 
REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

LAT...LON 2930 8214 2911 8217 2916 8238 2928 8235
TIME...MOT...LOC 2120Z 285DEG 11KT 2919 8223

$$

ZIBURA

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 24, 3:11 PM EDT	Areal Flood Advisory	JAX	Gilchrist	2 hr
Sep 24, 3:26 PM EDT	Areal Flood Advisory	JAX	Alachua, Marion	2 hr
Sep 24, 4:29 PM EDT	Areal Flood Advisory	JAX	Putnam	61 min
Sep 24, 4:48 PM EDT	Areal Flood Advisory	JAX	Marion	57 min
Sep 24, 4:52 PM EDT	Special Weather Statement	JAX	Marion	53 min
Sep 24, 5:27 PM EDT	Special Weather Statement	JAX	Marion	33 min
Sep 24, 5:49 PM EDT	Areal Flood Advisory	JAX	Marion	56 min
Sep 24, 5:58 PM EDT	Special Weather Statement	JAX	Marion	47 min

Nearby

Tornado Warnings in Florida, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.