Alert archive / Florida / Tornado Warnings in 1992
Tornado Warning 1, NWS Jacksonville, FL
NWS Jacksonville, FL issued this tornado warning at Apr 11, 1992, 4:49 PM EDT for Duval County, Saint Johns County, Florida. It was in force for 26 min.
The area
The counties it named.
The facts
- Issued
- Apr 11, 1992, 4:49 PM EDT (20:49 UTC)
- Expired
- Apr 11, 1992, 5:15 PM EDT
- In force
- 26 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
Counties Duval County, FL, Saint Johns County, FL
The nearest sounding before it
Jacksonville, FL (KAYS), launched 12:00Z, 8.8 hours before the alert went out and 45 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.
- Mixed-layer CAPE
- 370 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 917 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KJAX 112054 TORJAX FLC031-109-112115- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSONVILLE FL 449 PM EDT SAT APR 11 1992 THE NATIONAL WEATHER SERVICE IN JACKSONVILLE FL HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 515 PM EDT IN NORTHEAST FLORIDA ...SOUTHERN DUVAL COUNTY...NORTHERN ST JOHNS COUNTY AND ADJACENT COASTAL WATERS OF NORTHEAST FLORIDA AT 440 PM EDT...FUNNEL CLOUDS WERE REPORTED IN ST. JOHNS COUNTY NEAR THE TOWNS OF HASTINGS AND TOCOI ALONG THE WESTERN EDGE OF THE ST. JOHNS RIVER. THERE IS A LARGE THUNDERSTORM IN THIS AREA MOVING NORTH AT 25 MILES AN HOUR WHICH MAY DEVELOP BRIEF BUT DANGEROUS TORNADOS AND WATESPOUTS. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Apr 11, 1:08 PM EDT, 3 hours 41 minutes before
FLZ008-007-009-111900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 103 PM EDT SAT APR 11 1992 AT 1PM EDT...NATIONAL WEATHER SERVICE RADARS SHOWED THUNDERSTORMS DEVELOPING IN THE JACKSONVILLE AREA SOUTH TO PONTE VEDRA BEACH AND FROM SOUTHERN COLUMBIA COUNTY SOUTH OF LAKE CITY TO OCALA. THESE THUNDERSTORMS ARE DEVELOPING VERY RAPIDLY AND WILL MOVE INTO PARTS OF GAINESVILLE...LAKE CITY AND AMELIA ISLAND WITHIN THE NEXT HOUR ACCOMPANIED BY HEAVY RAINFALL...STRONG GUSTY WINDS...FREQUENT DANGEROUS LIGHTNING AND POSSIBLE HAIL AS THEY MOVE TO THE NORTH AT 20 MILES AN HOUR. MARINE INTEREST ON THE ST. JOHNS RIVER AND OFFSHORE AMELIA ISLAND AND FERNANDINA SHOULD SEEK SHELTER UNTIL THE THUNDERSTORMS HAVE PASSED.
Special weather statement, Apr 11, 4:08 PM EDT, 41 minutes before
FLZ008-009-112200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 403 PM EDT SAT APR 11 1992 AT 400 PM EDT...NATIONAL WEATHER SERVICE RADARS SHOWED THUNDERSTORMS ALONG THE ST. JOHNS RIVER FROM PALATKA NORTH THROUGH JACKSONVILLE. OTHER ISOLATED THUNDERSTORMS CONTINUED SOUTHEAST OF CRESCENT BEACH AND EAST OF CROSS CITY. THE THUNDERSTORMS ARE MOVING NORTH AT 20 MILES AN HOUR AND WILL CONTINUE TO MOVE ALONG THE ST.JOHNS RIVER AND THROUGH THE DOWNTOWN JACKSONVILLE AREA FOR THE NEXT FEW HOURS. MARINE INTERESTS ON THE ST JOHNS RIVER SHOULD SEEK SHELTER FOR THE NEXFEW HOURS. THE THUNDERSTORMS MAY BE ACCOMPANIED BY STRONG GUSTY WINDS...FREQUENT LIGHTNING ...HEAVY RAINFALL AND HAIL.
Nearby
Tornado Warnings in Florida, 1992Every tornado warning in 1992Tornadoes in 1992
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.