Alert archive / Florida / Tornado Warnings in 2010

Tornado Warning 13, NWS Jacksonville, FL

March 11, 2010Flagler County, Florida

NWS Jacksonville, FL issued this tornado warning at Mar 11, 2010, 12:47 PM EST for Flagler County, Florida. It was in force for 43 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: Mar 11, 2010, 12:47 PM EST (17:47 UTC)
Expired: Mar 11, 2010, 1:30 PM EST
In force: 43 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

County Flagler County, FL

The radar

The Jacksonville radar (KJAX), 132 km from the middle of the area, began a volume at 17:50 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 watch it was issued in

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

Issued	Product	Office	Lasted
Mar 11, 10:58 AM EST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 5.8 hours before the alert went out and 124 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: 220 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 614 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

847 
WFUS52 KJAX 111747
TORJAX
FLC035-111830-
/O.NEW.KJAX.TO.W.0013.100311T1747Z-100311T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1247 PM EST THU MAR 11 2010

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN FLAGLER COUNTY IN NORTHEAST FLORIDA

* UNTIL 130 PM EST

* AT 1247 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES SOUTH OF
  BUNNELL...MOVING NORTHEAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BUNNELL...PALM COAST AND FLAGLER BEACH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM EST THURSDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 2941 8115 2926 8114 2925 8117 2926 8141
      2927 8142 2930 8143 2941 8142 2963 8118
      2945 8110 2943 8110
TIME...MOT...LOC 1747Z 237DEG 11KT 2937 8127

$$

HESS

1 follow-up statement

652 
WWUS52 KJAX 111829
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
129 PM EST THU MAR 11 2010

FLC035-111840-
/O.EXP.KJAX.TO.W.0013.000000T0000Z-100311T1830Z/
FLAGLER FL-
129 PM EST THU MAR 11 2010

...THE TORNADO WARNING FOR SOUTHEASTERN FLAGLER COUNTY HAS EXPIRED...

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM EST THURSDAY EVENING
FOR NORTHEASTERN FLORIDA.

LAT...LON 2941 8115 2926 8114 2925 8117 2926 8141
      2927 8142 2930 8143 2941 8142 2963 8118
      2945 8110 2943 8110
TIME...MOT...LOC 1830Z 237DEG 11KT 2944 8114

$$

PETERSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 11, 9:36 AM EST	Special Weather Statement	JAX	Marion	39 min
Mar 11, 9:53 AM EST	Tornado Warning	JAX	Marion	52 min
Mar 11, 10:01 AM EST	Areal Flood Advisory	JAX	Marion	119 min
Mar 11, 10:42 AM EST	Tornado Warning	JAX	Marion	48 min
Mar 11, 11:08 AM EST	Areal Flood Advisory	JAX	Marion	112 min
Mar 11, 11:09 AM EST	Special Marine Warning	JAX		111 min
Mar 11, 11:22 AM EST	Special Weather Statement	JAX	Gilchrist	38 min
Mar 11, 11:33 AM EST	Special Weather Statement	JAX	Flagler, Putnam	42 min
Mar 11, 11:55 AM EST	Special Weather Statement	JAX	Flagler	50 min
Mar 11, 12:04 PM EST	Areal Flood Warning	JAX	Marion	4 hr
Mar 11, 12:06 PM EST	Special Weather Statement	JAX	Marion	39 min
Mar 11, 12:09 PM EST	Special Weather Statement	JAX	Bradford, Union	51 min
Mar 11, 12:22 PM EST	Severe Thunderstorm Warning	JAX	Marion	38 min
Mar 11, 1:02 PM EST	Special Marine Warning	JAX		118 min
Mar 11, 1:31 PM EST	Special Weather Statement	JAX	Flagler	44 min
Mar 11, 1:47 PM EST	Lake Wind Advisory	JAX	Flagler, Nassau	5 hr

Nearby

Tornado Warnings in Florida, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.