Alert archive / Florida / Tornado Warnings in 1993

Tornado Warning 3, NWS Jacksonville, FL

March 13, 1993Alachua County, Bradford County, Union County, Florida

NWS Jacksonville, FL issued this tornado warning at Mar 13, 1993, 12:29 AM EST for Alachua County, Bradford County, Union County, Florida. It was in force for 61 min.

The area

The counties it named.

The facts

Issued: Mar 13, 1993, 12:29 AM EST (05:29 UTC)
Expired: Mar 13, 1993, 1:30 AM EST
In force: 61 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

Counties Alachua County, FL, Bradford County, FL, Union County, FL

The nearest sounding before it

Jacksonville, FL (KAYS), launched 00:00Z, 5.5 hours before the alert went out and 89 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: 232 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 827 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 350 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAX 130528
TORJAX
FLC001-125-007-130630-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1229
 AM EST SAT MAR 13 1993
 
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE FL   HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  130 AM EST
S...
 
IN NORTH FLORIDA
 
   ...ALACHUA COUNTY...UNION COUNTY
 
IN NORTHEAST FLORIDA
 
   ...BRADFORD COUNTY
 
AT 1215 AM EST...ALACHUA COUNTY SHERRIFS OFFICE HAS REPORTED AT LEAST 5
REPORTS OF WIND DAMAGE IN THE GAINESVILLE POSSIBLY DUE TO TORNADO
ACTIVITY.
 
THE THUNDERSTORMS IN THIS AREA ARE MOVING EAST-NORTHEAST AT 40 MILES AN
HOUR AND WILL MOVE INTO UNION AND BRADFORD COUNTIES IN THE NEXT 15
MINUTES.
 
 
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, Mar 12, 10:17 PM EST, 2 hours 12 minutes before

FLZ008-007-009-012-GAZ013-015-130615-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1009 PM EST FRI MAR 12 1993

....A TORNADO WATCH IN EFFECT FOR THE FOLLOWING COUNTIES OF NORTHEAST
FLORIDA AND SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS UNTIL 4AM
SATURDAY MORNING...COLUMBIA...GILCHRIST...NASSAU...BAKER...HAMILTON..
UNION...BRADFORD...DUVAL...LAFAYETTE...SUWANNEE...CAMDEN GA...CHARLTON
GA...

...A TORNADO WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES OF NORTHEAST
FLORIDA AND THE ADJACENT COASTAL WATERS  UNTIL 7AM SATURDAY MORNING...
ALACHUA...CLAY...LEVY...MARION...PUTNAM...AND ST JOHNS...

AT 10 PM EST...THUNDERSTORMS IN THE NORTHERN GULF OF MEXICO WILL BE
MOVING ONSHORE THE WEST COAST OF FLORIDA LATE TONIGHT AND THROUGHOUT
MOST OF SATURDAY MORNING. SOME OF THESE THUNDERSTORMS MAY BECOME
SEVERE WITH STRONG GUSTY WINDS...FREQUENT LIGHTNING...HEAVY RAINFALL AND
HAIL. TORNADOS ARE ALWAYS POSSIBLE WHEN SEVERE THUNDERSTORMS DEVELOP
AT THIS TIME OF YEAR.

THE THUNDERSTORMS ARE MOVING EAST NORTHEAST AT 40 MILES AN HOUR.

RESIDENTS IN THE WATCH AREA SHOULD BE PREPARED IF SEVERE WEATHER IMPACTS
YOUR AREA IN THE NEXT 8 HOURS. MARINE INTERESTS SHOULD STAY IN PORT
TONIGHT AS WINDS WILL BE GUSTY AND SEAS WILL BE ROUGH.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 1:24 AM EST	Tornado Warning	JAX	Duval, Nassau	36 min

Nearby

Tornado Warnings in Florida, 1993 Every tornado warning in 1993 Tornadoes in 1993

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.