Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 12, NWS Jacksonville, FL

March 30, 20115 counties in Florida

NWS Jacksonville, FL issued this tornado warning at Mar 30, 2011, 4:06 PM EDT for 5 counties in Florida. It was in force for 54 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 30, 2011, 4:06 PM EDT (20:06 UTC)
Expired: Mar 30, 2011, 5:00 PM EDT
In force: 54 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Bradford County, FL, Clay County, FL, Duval County, FL, Nassau County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 22 km from the middle of the area, began a volume at 20:10 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 30, 11:10 AM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 8.1 hours before the alert went out and 23 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: 559 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 222 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

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

090 
WFUS52 KJAX 302006 RRA
TORJAX
FLC007-019-031-089-109-302100-
/O.NEW.KJAX.TO.W.0012.110330T2006Z-110330T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
406 PM EDT WED MAR 30 2011

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN BRADFORD COUNTY IN NORTHERN FLORIDA
  NORTHERN CLAY COUNTY IN NORTHEAST FLORIDA
  SOUTHERN NASSAU COUNTY IN NORTHEAST FLORIDA
  NORTHERN ST. JOHNS COUNTY IN NORTHEAST FLORIDA
  DUVAL COUNTY IN NORTHEAST FLORIDA

* UNTIL 500 PM EDT

* AT 406 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9
  MILES WEST OF MAXVILLE...OR 8 MILES NORTHEAST OF RAIFORD...MOVING
  EAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MAXVILLE...BRYCEVILLE...MIDDLEBURG...RATLIFF...LAKESIDE...DOCTORS
  INLET...NORMANDY...ORTEGA...ORANGE PARK...JACKSONVILLE
  INTERNATIONAL AIRPORT...RIVERSIDE...SAN MARCO...DOWNTOWN
  JACKSONVILLE...SWITZERLAND...MANDARIN...OCEANWAY...FRUIT COVE...
  ARLINGTON...BAYARD...UNF...FORT CAROLINE...DURBIN...AMELIA CITY...
  SAN PABLO...TALBOT ISLAND...LITTLE TALBOT ISLAND...SOUTH PONTE
  VEDRA BEACH...SAWGRASS...PONTE VEDRA BEACH...PALM VALLEY...NEPTUNE
  BEACH...MAYPORT...JACKSONVILLE BEACH AND GUANA RIVER STATE PARK.

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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 2999 8130 3007 8219 3011 8214 3014 8214
      3014 8204 3036 8206 3038 8204 3041 8205
      3044 8203 3066 8143 3051 8143 3047 8140
      3041 8141 3041 8140 3039 8138 3033 8139
      3001 8129
TIME...MOT...LOC 2006Z 268DEG 42KT 3017 8214

$$

HESS

6 follow-up statements

417 
WWUS52 KJAX 302022
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
422 PM EDT WED MAR 30 2011

FLC007-302032-
/O.CAN.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
BRADFORD FL-
422 PM EDT WED MAR 30 2011

...THE TORNADO WARNING FOR NORTHEASTERN BRADFORD COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

LAT...LON 2999 8130 3008 8197 3008 8201 3011 8202
      3014 8203 3038 8203 3041 8203 3043 8200
      3063 8143 3051 8143 3047 8140 3041 8141
      3041 8140 3039 8138 3033 8139 3001 8129
TIME...MOT...LOC 2022Z 268DEG 36KT 3042 8192 3014 8194

$$

FLC019-031-089-109-302100-
/O.CON.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
CLAY FL-NASSAU FL-ST. JOHNS FL-DUVAL FL-
422 PM EDT WED MAR 30 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR DUVAL...
NORTHERN ST. JOHNS...SOUTHERN NASSAU AND NORTHERN CLAY COUNTIES...

AT 422 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
LINE OF SEVERE THUNDERSTORMS WITH STRONG ROTATION.  THESE TORNADO
PRODUCING STORMS WERE LOCATED ALONG A LINE EXTENDING FROM BRYCEVILLE
TO MAXVILLE...OR ALONG A LINE EXTENDING FROM 14 MILES SOUTHWEST OF
CALLAHAN TO 14 MILES EAST OF RAIFORD...MOVING EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
JACKSONVILLE HEIGHTS...NORMANDY...LAKESIDE...DOCTORS INLET...
BELLAIR...JACKSONVILLE INTERNATIONAL AIRPORT...ORTEGA...ORANGE
PARK...RIVERSIDE...SAN MARCO...DOWNTOWN JACKSONVILLE...OCEANWAY...
TALLYRAND...MANDARIN...SWITZERLAND...ARLINGTON...FRUIT COVE...UNF...
FORT CAROLINE...TALBOT ISLAND...SOUTH PONTE VEDRA BEACH...SAWGRASS...
SAN PABLO...PONTE VEDRA BEACH...PALM VALLEY...NEPTUNE BEACH...
MAYPORT...LITTLE TALBOT ISLAND...JACKSONVILLE BEACH...GUANA RIVER
STATE PARK...DURBIN...AMELIA CITY AND BAYARD.

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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 2999 8130 3008 8197 3008 8201 3011 8202
      3014 8203 3038 8203 3041 8203 3043 8200
      3063 8143 3051 8143 3047 8140 3041 8141
      3041 8140 3039 8138 3033 8139 3001 8129
TIME...MOT...LOC 2022Z 268DEG 36KT 3042 8192 3014 8194

$$

HESS

321 
WWUS52 KJAX 302029
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
429 PM EDT WED MAR 30 2011

FLC089-302039-
/O.CAN.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
NASSAU FL-
429 PM EDT WED MAR 30 2011

...THE TORNADO WARNING FOR EXTREME EASTERN NASSAU COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

LAT...LON 3033 8139 3001 8130 3009 8191 3010 8191
      3020 8191 3032 8191 3036 8188 3039 8186
      3047 8163 3052 8147 3052 8146 3051 8145
      3051 8143 3049 8143 3047 8140 3044 8140
      3041 8141 3039 8138
TIME...MOT...LOC 2029Z 271DEG 41KT 3039 8175 3014 8182

$$

FLC019-031-109-302100-
/O.CON.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
CLAY FL-ST. JOHNS FL-DUVAL FL-
429 PM EDT WED MAR 30 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR DUVAL...
NORTHERN ST. JOHNS AND NORTHERN CLAY COUNTIES...

AT 429 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
LINE OF SEVERE THUNDERSTORMS WITH STRONG ROTATION.  THESE TORNADO
PRODUCING STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES
NORTH OF NORMANDY TO LAKESIDE...OR ALONG A LINE EXTENDING FROM 8
MILES SOUTHWEST OF JACKSONVILLE INTERNATIONAL AIRPORT TO LAKESIDE...
MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LAKESIDE...DOCTORS INLET...BELLAIR...ORTEGA...RIVERSIDE...DOWNTOWN
JACKSONVILLE...SAN MARCO...ORANGE PARK...OCEANWAY...TALLYRAND...
ARLINGTON...SWITZERLAND...MANDARIN...FRUIT COVE...FORT CAROLINE...
UNF...BAYARD...TALBOT ISLAND...SAN PABLO...LITTLE TALBOT ISLAND...
MAYPORT...DURBIN...NEPTUNE BEACH...JACKSONVILLE BEACH...PONTE VEDRA
BEACH...SOUTH PONTE VEDRA BEACH...SAWGRASS...PALM VALLEY AND GUANA
RIVER STATE PARK.

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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 3033 8139 3001 8130 3009 8191 3010 8191
      3020 8191 3032 8191 3036 8188 3039 8186
      3047 8163 3052 8147 3052 8146 3051 8145
      3051 8143 3049 8143 3047 8140 3044 8140
      3041 8141 3039 8138
TIME...MOT...LOC 2029Z 271DEG 41KT 3039 8175 3014 8182

$$

HESS

306 
WWUS52 KJAX 302035
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
435 PM EDT WED MAR 30 2011

FLC019-031-109-302100-
/O.CON.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
CLAY FL-ST. JOHNS FL-DUVAL FL-
435 PM EDT WED MAR 30 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR EASTERN
DUVAL...NORTHERN ST. JOHNS AND NORTHEASTERN CLAY COUNTIES...

AT 435 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
LINE OF SEVERE THUNDERSTORMS WITH STRONG ROTATION.  THESE TORNADO
PRODUCING STORMS WERE LOCATED ALONG A LINE EXTENDING FROM TALLYRAND
TO ORANGE PARK...OR ALONG A LINE EXTENDING FROM DOWNTOWN JACKSONVILLE
TO ORANGE PARK...MOVING EAST AT 60 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FRUIT
COVE...FORT CAROLINE...UNF...BAYARD...SAN PABLO...MAYPORT...DURBIN...
NEPTUNE BEACH...JACKSONVILLE BEACH...PONTE VEDRA BEACH...PALM
VALLEY...SAWGRASS...GUANA RIVER STATE PARK AND SOUTH PONTE VEDRA
BEACH.

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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 3033 8139 3001 8130 3009 8173 3014 8176
      3023 8174 3031 8172 3037 8171 3041 8171
      3043 8159 3045 8148 3045 8145 3044 8141
      3045 8141 3044 8140 3041 8141 3039 8138
TIME...MOT...LOC 2035Z 268DEG 50KT 3039 8160 3014 8167

$$

HESS

125 
WWUS52 KJAX 302046
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
446 PM EDT WED MAR 30 2011

FLC019-302056-
/O.CAN.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
CLAY FL-
446 PM EDT WED MAR 30 2011

...THE TORNADO WARNING FOR NORTHEASTERN CLAY COUNTY IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

LAT...LON 3033 8139 3008 8132 3010 8161 3016 8163
      3023 8165 3031 8161 3037 8160 3040 8157
      3043 8152 3044 8148 3044 8145 3044 8141
      3045 8141 3044 8140 3041 8141 3039 8138
TIME...MOT...LOC 2046Z 268DEG 50KT 3039 8150 3016 8154

$$

FLC031-109-302100-
/O.CON.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
ST. JOHNS FL-DUVAL FL-
446 PM EDT WED MAR 30 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR
SOUTHEASTERN DUVAL AND NORTHERN ST. JOHNS COUNTIES...

AT 446 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
LINE OF SEVERE THUNDERSTORMS WITH STRONG ROTATION.  THESE TORNADO
PRODUCING STORMS WERE LOCATED ALONG A LINE EXTENDING FROM FORT
CAROLINE TO BAYARD...OR ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST
OF ARLINGTON TO MANDARIN...MOVING EAST AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BAYARD...SAN PABLO...MAYPORT...NEPTUNE BEACH...JACKSONVILLE BEACH...
PONTE VEDRA BEACH...PALM VALLEY...SAWGRASS AND GUANA RIVER STATE
PARK.

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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 3033 8139 3008 8132 3010 8161 3016 8163
      3023 8165 3031 8161 3037 8160 3040 8157
      3043 8152 3044 8148 3044 8145 3044 8141
      3045 8141 3044 8140 3041 8141 3039 8138
TIME...MOT...LOC 2046Z 268DEG 50KT 3039 8150 3016 8154

$$

HESS

800 
WWUS52 KJAX 302051
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
451 PM EDT WED MAR 30 2011

FLC031-109-302100-
/O.CON.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
ST. JOHNS FL-DUVAL FL-
451 PM EDT WED MAR 30 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR
SOUTHEASTERN DUVAL AND EXTREME NORTHERN ST. JOHNS COUNTIES...

AT 452 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
LINE OF SEVERE THUNDERSTORMS WITH STRONG ROTATION.  THESE TORNADO
PRODUCING STORMS WERE LOCATED ALONG A LINE EXTENDING FROM MAYPORT TO
BAYARD...OR ALONG A LINE EXTENDING FROM MAYPORT TO 7 MILES SOUTHWEST
OF PALM VALLEY...MOVING EAST AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
JACKSONVILLE BEACH...PONTE VEDRA BEACH...PALM VALLEY AND SAWGRASS.

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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 3033 8139 3011 8133 3014 8153 3017 8156
      3025 8158 3030 8156 3034 8151 3039 8149
      3041 8144 3040 8142 3041 8141 3039 8138
TIME...MOT...LOC 2052Z 268DEG 50KT 3039 8140 3016 8144

$$

HESS

437 
WWUS52 KJAX 302058
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
458 PM EDT WED MAR 30 2011

FLC031-109-302108-
/O.EXP.KJAX.TO.W.0012.000000T0000Z-110330T2100Z/
ST. JOHNS FL-DUVAL FL-
458 PM EDT WED MAR 30 2011

...THE TORNADO WARNING FOR SOUTHEASTERN DUVAL AND EXTREME NORTHERN
ST. JOHNS COUNTIES WILL EXPIRE AT 500 PM EDT...

LAT...LON 3033 8139 3011 8133 3014 8153 3017 8156
      3025 8158 3030 8156 3034 8151 3039 8149
      3041 8144 3040 8142 3041 8141 3039 8138
TIME...MOT...LOC 2058Z 268DEG 50KT 3039 8130 3016 8134

$$

HESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 2:17 PM EDT	Special Marine Warning	JAX		118 min
Mar 30, 2:42 PM EDT	Special Weather Statement	JAX	Columbia, Gilchrist	63 min
Mar 30, 2:52 PM EDT	Tornado Warning	JAX	Columbia, Suwannee	38 min
Mar 30, 3:23 PM EDT	Special Weather Statement	JAX	Alachua, Marion	52 min
Mar 30, 3:27 PM EDT	Tornado Warning	JAX	Baker, Columbia, Union	48 min
Mar 30, 3:47 PM EDT	Tornado Warning	JAX	Marion	58 min
Mar 30, 4:02 PM EDT	Special Marine Warning	JAX		118 min
Mar 30, 4:06 PM EDT	Tornado Warning	JAX	Flagler, Putnam, Saint Johns	39 min
Mar 30, 4:15 PM EDT	Special Marine Warning	JAX		2 hr
Mar 30, 4:37 PM EDT	Tornado Warning	JAX	Flagler	23 min

Nearby

Tornado Warnings in Florida, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.