Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 4, NWS Jacksonville, FL

January 25, 2011Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Jan 25, 2011, 4:39 PM EST for Saint Johns County, Florida. It was in force for 36 min. 1 report 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: Jan 25, 2011, 4:39 PM EST (21:39 UTC)
Expired: Jan 25, 2011, 5:15 PM EST
In force: 36 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

County Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 67 km from the middle of the area, began a volume at 21:40 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
Jan 25, 4:45 PM EST	FUNNEL CLOUD	3 Nw St. Augustine, FL	TWO MILES NORTH OF HWY 312 ST AUGUSTINE...FUNNEL CLOUD REORTED

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
Jan 25, 2:07 PM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 9.7 hours before the alert went out and 68 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: 16 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 189 m²/s²
0-3 km storm-relative helicity: 281 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.

168 
WFUS52 KJAX 252139
TORJAX
FLC109-252215-
/O.NEW.KJAX.TO.W.0004.110125T2139Z-110125T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
439 PM EST TUE JAN 25 2011

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ST. JOHNS COUNTY IN NORTHEAST FLORIDA

* UNTIL 515 PM EST

* AT 439 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9
  MILES WEST OF SAINT AUGUSTINE SOUTH...OR 8 MILES NORTHEAST OF
  HASTINGS...MOVING NORTHEAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAINT
  AUGUSTINE SOUTH...SAINT AUGUSTINE...VILANO BEACH...SOUTH PONTE
  VEDRA BEACH AND GUANA RIVER STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST TUESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 2975 8138 2984 8156 3021 8136 3020 8135
      3012 8132 3001 8129 2997 8129 2994 8128
      2990 8127
TIME...MOT...LOC 2139Z 209DEG 28KT 2988 8142

$$

HESS

3 follow-up statements

029 
WWUS52 KJAX 252148
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
448 PM EST TUE JAN 25 2011

FLC109-252215-
/O.CON.KJAX.TO.W.0004.000000T0000Z-110125T2215Z/
ST. JOHNS FL-
448 PM EST TUE JAN 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EST FOR CENTRAL
ST. JOHNS COUNTY...

AT 448 PM EST...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS TORNADO WAS LOCATED
NEAR SAINT AUGUSTINE...MOVING NORTHEAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VILANO
BEACH...SOUTH PONTE VEDRA 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.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST TUESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 2982 8133 2993 8149 3013 8132 3012 8132
      3001 8129 2997 8129 2994 8128 2990 8127
TIME...MOT...LOC 2148Z 218DEG 33KT 2995 8134

$$

HESS

626 
WWUS52 KJAX 252157
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
457 PM EST TUE JAN 25 2011

FLC109-252215-
/O.CON.KJAX.TO.W.0004.000000T0000Z-110125T2215Z/
ST. JOHNS FL-
457 PM EST TUE JAN 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EST FOR EASTERN
ST. JOHNS COUNTY...

AT 457 PM EST...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS TORNADO WAS LOCATED
NEAR SAINT AUGUSTINE...MOVING NORTHEAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SOUTH
PONTE VEDRA BEACH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST TUESDAY EVENING
FOR NORTHEASTERN FLORIDA.

&&

LAT...LON 2984 8131 2995 8142 3006 8130 3001 8129
      2997 8129 2994 8128 2990 8127
TIME...MOT...LOC 2157Z 226DEG 30KT 2995 8127

$$

HESS

712 
WWUS52 KJAX 252208
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
508 PM EST TUE JAN 25 2011

FLC109-252216-
/O.EXP.KJAX.TO.W.0004.000000T0000Z-110125T2215Z/
ST. JOHNS FL-
508 PM EST TUE JAN 25 2011

...THE TORNADO WARNING FOR EASTERN ST. JOHNS COUNTY WILL EXPIRE AT
515 PM EST...

THE MAIN STORM WITH THE STRONG ROTATION HAS MOVED OFF THE COAST BUT 
A TRAILING SQUALL LINE WILL STILL PRODUCE GUSTY WINDS OF 45 TO 55 
MPH ALONG WITH POSSIBLE MINOR DAMAGE THROUGH 530 PM.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST TUESDAY EVENING
FOR NORTHEASTERN FLORIDA.

LAT...LON 2984 8131 2995 8142 3006 8130 3001 8129
      2997 8129 2994 8128 2990 8127
TIME...MOT...LOC 2206Z 226DEG 30KT 3000 8121

$$

HESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 25, 1:57 PM EST	Special Weather Statement	JAX	Gilchrist	33 min
Jan 25, 2:38 PM EST	Special Weather Statement	JAX	Gilchrist	22 min
Jan 25, 2:58 PM EST	Special Weather Statement	JAX	Columbia, Gilchrist	32 min
Jan 25, 3:24 PM EST	Special Weather Statement	JAX	Alachua, Baker, Bradford, Union	36 min
Jan 25, 3:44 PM EST	Areal Flood Advisory	JAX	Alachua, Baker, Bradford, Clay, Columbia, Duval and 3 more	91 min
Jan 25, 3:49 PM EST	Special Weather Statement	JAX	Alachua	26 min
Jan 25, 3:53 PM EST	Special Weather Statement	JAX	Bradford, Clay	37 min
Jan 25, 4:10 PM EST	Tornado Warning	JAX	Clay, Duval, Saint Johns	50 min
Jan 25, 4:11 PM EST	Special Weather Statement	JAX	Marion	34 min
Jan 25, 4:15 PM EST	Tornado Warning	JAX	Alachua, Marion	30 min
Jan 25, 4:28 PM EST	Tornado Warning	JAX	Marion	47 min
Jan 25, 4:31 PM EST	Special Weather Statement	JAX	Saint Johns	44 min
Jan 25, 4:36 PM EST	Severe Thunderstorm Warning	JAX	Alachua, Marion, Putnam	39 min
Jan 25, 4:41 PM EST	Areal Flood Advisory	JAX	Alachua, Marion, Putnam	94 min
Jan 25, 4:55 PM EST	Special Marine Warning	JAX		95 min
Jan 25, 5:01 PM EST	Special Weather Statement	JAX	Putnam, Saint Johns	44 min
Jan 25, 5:16 PM EST	Special Weather Statement	JAX	Flagler	44 min
Jan 25, 5:43 PM EST	Tornado Warning	JAX	Flagler	36 min
Jan 25, 6:30 PM EST	Special Marine Warning	JAX		60 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.