Alert archive / Florida / Tornado Warnings in 1996

Tornado Warning 11, NWS Miami, FL

August 24, 1996Monroe County, Florida

NWS Miami, FL issued this tornado warning at Aug 24, 1996, 8:48 AM EDT for Monroe County, Florida. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 24, 1996, 8:48 AM EDT (12:48 UTC)
Expired: Aug 24, 1996, 9:45 AM EDT
In force: 57 min
Issued by: NWS Miami, FL
Area: Whole counties

County Monroe County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 0.8 hours before the alert went out and 69 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: 1520 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1001 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 241255
TORMIA
FLC087-241345-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
848 AM EDT SAT AUG 24 1996
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS EXTENDED THE
TORNADO WARNING EFFECTIVE UNTIL  945 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN THE MIDDLE AND UPPER FLORIDA KEYS OF MONROE COUNTY
 
 AND THE ADJACENT COASTAL WATERS INCLUDING FLORIDA BAY
 
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES ADDITIONAL INTENSE
THUNDERSTORM DEVELOPMENT SOUTHWARD OVER CRAIG KEY AND DUCK KEY
IN THE PAST 10 MINUTES. THESE THUNDERSTORMS ARE SHOWING SEVERE
CHARACTERISTICS ON RADAR AND BASED ON EARLIER REPORTS OF WATERSPOUTS
THE PRESENT TORNADO WARNING HAS BEEN EXTENDED SOUTHWARD TO ALSO
INCLUDE THE MIDDLE KEYS FROM DUCK KEY NORTHWARD TO SOUTHERN END OF
KEY LARGO.
 
WATCH FOR SIGNS OF DEVELOPING SEVERE STORMS.  HAILSTONES AND
UNUSUALLY LOW SWIRLING CLOUDS ARE OFTEN SEEN NEAR DEVELOPING
TORNADOES.  STRONG DAMAGING WINDS AND TORNADOES OFTEN PRODUCE
A LOUD ROARING SOUND LIKE A TRAIN.  FREQUENT LIGHTNING OCCURS
NEAR THE MOST SEVERE PART OF THE THUNDERSTORM.
 
IN SCHOOL...FOLLOW TORNADO PLANS OR MOVE TO AN INTERIOR HALLWAY AWAY
FROM WINDOWS. IN ANY CIRCUMSTANCE...DO NOT
REMAIN IN THE CAFETERIA...GYMNASIUM OR PORTABLE CLASSROOM BUT SEEK
SHELTER ELSEWHERE IN THE SCHOOL.
 
 
 
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 8:18 AM EDT	Tornado Warning	MFL	Monroe	57 min

Nearby

Tornado Warnings in Florida, 1996 Every tornado warning in 1996 Tornadoes in 1996

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.