Alert archive / Florida / Tornado Warnings in 1993

Tornado Warning 1, NWS Miami, FL

March 13, 1993Collier County, Florida

NWS Miami, FL issued this tornado warning at Mar 13, 1993, 3:25 AM EST for Collier County, Florida. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Mar 13, 1993, 3:25 AM EST (08:25 UTC)
Expired
Mar 13, 1993, 4:30 AM EST
In force
65 min
Issued by
NWS Miami, FL
Area
Whole counties

County Collier County, FL

The nearest sounding before it

Key West, FL (KEYW), launched 00:00Z, 8.4 hours before the alert went out and 174 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-pSkew-T log-p diagram, Key West, FL at 00:00Z on 1993-03-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Key West, FL at 00:00Z on 1993-03-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 277 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
277 m²/s²
0-3 km storm-relative helicity
368 m²/s²
Significant tornado parameter
0.0
Supercell composite
13.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 130836
TORMIA
FLC021-130930-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
325 AM EST SAT MAR 13 1993
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  430 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHWEST FLORIDA
 
   ...COLLIER COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
AT 322 AM A WATERSPOUT WAS SIGHTED ABOUT ONE HALF MILES OFFSHORE NAPLES.
RADAR INDICATES STRONG THUNDERSTORMS MOVING ACROSS COLLIER COUNTY.
THUNDERSTORMS ARE MOVING EAST AT 40 MPH.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS UNDER
STURDY FURNITURE IN AN INTERIOR ROOM ON THE LOWEST FLOOR. USE
PILLOWS TO COVER YOUR BODY. AVOID WINDOWS. A MOBILE HOME IS NOT A
SAFE REFUGE FROM A TORNADO. MOVE TO A MORE SUBSTANTIAL BUILDING.
 
BOATERS SHOULD SEEK SAFE HARBOR IMMEDIATELY AND REMAIN IN PORT
UNTIL THESE THUNDERSTORMS PASS BEYOND THE COASTAL WATERS.
 
IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN ASK A LAW
ENFORCEMENT AGENCY TO RELAY YOUR SEVERE WEATHER REPORT TO THE LOCAL
NATIONAL WEATHER SERVICE OFFICE.

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, 10:26 PM EST, 4 hours 59 minutes before
FLZ0018>019-021>022-130530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1030 PM EST FRI MAR 12 1993

...A TORNADO WATCH IS IN EFFECT FOR GLADES...HENDRY...COLLIER...BROWARD
   AND DADE COUNTIES UNTIL 7 AM SATURDAY...

AT 1030 PM...NATIONAL WEATHER SERVICE RADAR IS NOT INDICATING ANY SHOWER
OR THUNDERSTORM ACTIVITY OVER SOUTH FLORIDA OR THE ADJACENT COASTAL WATERS.
HOWEVER...A MAJOR GALE CENTER OVER THE GULF OF MEXICO PRECEDED BY A STRONG
SQUALL LINE OF THUNDERSTORMS IS RAPIDLY APPROACHING THE AREA AND IS EXPECTED
TO BE ENTERING THE WESTERN COASTAL WATERS OF SOUTH FLORIDA BY MIDNIGHT.
THE WEATHER ASSOCIATED WITH THE SQUALL LINE WILL MOVE RAPIDLY ACROSS SOUTH
FLORIDA DURING THE LATE NIGHT AND EARLY MORNING HOURS.

THERE IS A GOOD POTENTIAL FOR SEVERE WEATHER LATER TONIGHT IN THE COUNTIES
AFFECTED BY THE WATCH.  THE PUBLIC IS ADVISED TO STAY TUNED TO NOAA WEATHER
RADIO AS WELL AS OTHER SOURCES OF WEATHER INFORMATION FOR POSSIBLE WARNINGS
THAT MAY BE REQUIRED.
Special weather statement, Mar 12, 10:42 PM EST, 4 hours 43 minutes before
FLZ005>023-131100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1030 PM EST FRI MAR 12 1993

...TORNADO WATCH NORTHERN FLORIDA UNTIL 400 AM EST SATURDAY...
...TORNADO WATCH THE REMAINDER OF FLORIDA UNTIL 700 AM EST SATURDAY...

WEATHER AFFECTS FROM THE STRONG STORM SYSTEM OVER THE CENTRAL GULF OF
MEXICO ARE BEGINNING TO BE FELT IN THE FORM OF THUNDERSTORMS OVER THE
FLORIDA PANHANDLE. STRONG SOUTHERLY WINDS AHEAD OF THIS SYSTEM ARE ALSO
BEGINNING TO BE REPORTED STATEWIDE AS THIS SYSTEM CONTINUES TO
STRENGTHEN.

THIS STORM IS FORECAST TO BECOME A MAJOR WINTER STORM OVER THE WEEKEND.
THIS SYSTEM WILL HAVE A SIGNIFICANT EFFECT ON FLORIDA WEATHER THROUGH
THE WEEKEND WITH VERY STRONG WINDS...STRONG THUNDERSTORMS WITH
POSSIBLE TORNADOES...LOCALLY HEAVY RAINS...AND THEN VERY COLD
TEMPERATURES.
                         <
GALE WARNINGS ARE IN EFFECT FOR TONIGHT AND SATURDAY. BOATERS ARE
DISCOURAGED FROM VENTURING INTO GULF OR ATLANTIC WATERS THROUGH
SATURDAY AS WEATHER CONDITIONS WILL BE HAZARDOUS IN OPEN WATERS.

WITH PASSAGE OF THE COLD FRONT...WINDS WILL SWITCH TO THE WEST. THIS
STRONG ONSHORE FLOW OVER THE WEST COAST OF FLORIDA HAS THE POTENTIAL FOR
PRODUCING COASTAL FLOODING OF LOW LYING AREAS AT TIMES OF HIGH
TIME EARLY SATURDAY MORNING AND SATURDAY AFTERNOON. HIGH SURF MAY
PRODUCE SIGNIFICANT BEACH EROSION AT THESE TIMES ALSO. A COASTAL
FLOOD WATCH IS CURRENTLY IN EFFECT FOR THE PANHANDLE WILL REMAIN IN EFFECT
THROUGH SATURDAY FOR THE GULF COAST FROM CAPE SABLE TO APALACHICOLA.

A HIGH WIND ADVISORY FOR WINDS IN EXCESS OF 25 MPH IS IN EFFECT TONIGHT
FOR THE STATE OF FLORIDA. ON SATURDAY...HIGH WIND WARNINGS MAY
BE ISSUED FOR WINDS IN EXCESS OF 40 MPH FOR PORTIONS OF THE STATE.

VERY COLD AIR WILL BE SPREADING OVER THE STATE ON SATURDAY WITH
RECORD SETTING LOW TEMPERATURES FOR THIS TIME OF YEAR POSSIBLE IN
MANY AREAS. LOW TEMPERATURES SUNDAY MORNING WILL RANGE FROM THE MID
TO UPPER 20S IN NORTH FLORIDA TO THE 30S OVER CENTRAL FLORIDA AND TO
THE 40S OVER SOUTH FLORIDA. THE KEYS ARE EXPECTED TO BE IN THE LOWER
50S. HOWEVER WITH WINDS OF 10 TO 20 MPH DURING THIS TIME...THE WIND
CHILL FACTOR WILL RANGE FROM AROUND 10 DEGREES IN NORTH FLORIDA TO
15 TO 20 DEGREES IN CENTRAL FLORIDA AND AROUND 30 DEGREES IN SOUTH
FLORIDA. THESE TEMPERATURES COULD POSSIBLY BE LOWER SUNDAY NIGHT/MONDAY
MORNING IF THE WINDS EASE. SUCH TEMPERATURES ARE LIFE THREATENING FOR
THE HOMELESS AND FOR PETS LEFT OUTDOORS. THE WINDS AND COLD TEMPERATURES
WILL PRESENT SERIOUS PROBLEMS FOR THE TENT CITIES IN SOUTH DADE COUNTY.

AGRICULTURAL INTERESTS FROM THE NORTHERN EVERGLADES NORTHWARD SHOULD
TAKE NECESSARY MEASURES TO PREPARE FOR FROST AND FREEZING TEMPERATURES
ESPECIALLY SUNDAY NIGHT/MONDAY MORNING.

RESIDENTS THROUGHOUT THE STATE SHOULD PLAN TO PROTECT COLD SENSITIVE
PLANTS AND PROVIDE SHELTER FOR PETS AND ANIMALS. BE ON THE ALERT FOR
SEVERE WEATHER OR COASTAL FLOOD WARNINGS FROM LOCAL WEATHER SE"RVICE
OFFICES SHOULD THEY BECOME NECESSARY.
Special weather statement, Mar 13, 12:38 AM EST, 2 hours 47 minutes before
FLZ011-013>023-130640-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
1240 PM EST FRI MAR 14 1993

...TORNDADO WATCH IN EFFECT FOR ALL OF SOUTH FLORIDA UNTIL 7AM EST...

SHOWERS WERE SCATTERED FROM NEAR AND JUST OFFSHORE OF CAPE CANAVERAL TO
CENTRAL INDIAN RIVER COUNTY AND JUST OFFSHORE BETWEEN STUART AND FT
PIERCE.

LITTLE MOVEMENT WAS DETECTED.

OTHER SHOWERS AND THUNDERSTORMS DIRECTLY ASSOCIATED WITH THE APPROACHING
SQUALL LINE WERE LOCATED WEST OF A TITUSVILL FORT MYERS LINE AND
EXTENDED WEST OUT OVER THE GULF TO ABOUT 100 MILES.

MOVEMENT WAS EAST TO SOUTHEAST AT 40 MILES AN HOUR.  THIS AREA OF
SHOWERS AND THUNDERSTORMS IS EXPECTED TO ARRIVE IN SOUTHEASTERN
FLORIDA AFTER 1AM.  HOWEVER OTHER SHOWERS AND THUNDERSTORMS MAY DEVELOP
OUT IN FRONT OF THIS MAIN AREA AT ANY TIME.

RESIDENTS AND MARINERS ALONG THE EAST COAST OF FLORIDA SHOULD BE ALERT
FOR STRONG THUNDERSTORMS AND BE PREPARED TO SEEK SHELTER OR SAFE HARBOR
WHEN THUNDERSTORMS APPROACH.
Special weather statement, Mar 13, 1:40 AM EST, 1 hour 45 minutes before
FLZ011-013>023-130640-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
0140 AM EST FRI MAR 14 1993

...TORNDADO WATCH IN EFFECT FOR ALL OF SOUTH FLORIDA UNTIL 7AM EST...

AN AREA OF RAIN WITH AN EMBEDDED BROKEN LINE OF SHOWERS AND THUNDERSTORM
WAS LOCATED NORTHWEST OF A MELBOURNE MARCO ISLAND LINE AND EXTENDED WEST
TO A ST. AUGUSTINE TAMPA LINE.

MOVEMENT WAS EAST TO SOUTHEAST AT 40 MILES AN HOUR.  THIS AREA OF
SHOWERS AND THUNDERSTORMS IS EXPECTED TO ARRIVE IN SOUTHEASTERN
FLORIDA AFTER 3AM.  HOWEVER SHOWERS AND THUNDERSTORMS MAY DEVELOP
OUT IN FRONT OF THIS AREA AT ANY TIME.

RESIDENTS AND MARINERS ALONG THE EAST COAST OF FLORIDA SHOULD BE ALERT
FOR STRONG THUNDERSTORMS AND BE PREPARED TO SEEK SHELTER OR SAFE HARBOR
WHEN THUNDERSTORMS APPROACH.
Special weather statement, Mar 13, 2:48 AM EST, 37 minutes before
FLZ011-013>023-130840-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
0240 AM EST FRI MAR 14 1993

...TORNDADO WATCH IN EFFECT FOR ALL OF SOUTH FLORIDA UNTIL 7AM EST...

AN AREA OF VERY HEAVY SHOWERS AND THUNDERSTORMS WAS LOCATED ON A LINE
FROM TITUSVILLE TO FT MYERS. THIS WAS PART OF A 80 MILE WIDE AREA
OF RAIN THAT EXTENDED OVER MOST OF CENTRAL AND SOUTH FLORIDA.

MOVEMENT WAS EAST AT 40 MILES AN HOUR.  THIS AREA OF SHOWERS AND
THUNDERSTORMS IS EXPECTED TO ARRIVE IN SOUTHEASTERN FLORIDA AROUND
4 AM. HOWEVER SHOWERS AND THUNDERSTORMS MAY DEVELOP OUT IN FRONT OF THIS
AREA AT ANY TIME.

RESIDENTS AND MARINERS ALONG THE EAST COAST OF FLORIDA SHOULD BE ALERT
FOR STRONG THUNDERSTORMS AND BE PREPARED TO SEEK SHELTER OR SAFE HARBOR
WHEN THUNDERSTORMS APPROACH.

THESE THUNDERSTORMS COULD PRODUCE TORNADOES...IF THREATENING WEATHER
APROACHES YOUR LOCATION ESPECIALLY IF YOU ARE IN A MOBILE HOMEf SEEK
SHELTER IMMEDIATELY.

Nearby

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