Alert archive / Florida / Tornado Warnings in 1987

Tornado Warning 9, NWS Miami, FL

August 19, 1987Monroe County, Florida

NWS Miami, FL issued this tornado warning at Aug 19, 1987, 7:48 AM EDT for Monroe County, Florida. It was in force for 27 min.

The area

The counties it named.

The facts

Issued
Aug 19, 1987, 7:48 AM EDT (11:48 UTC)
Expired
Aug 19, 1987, 8:15 AM EDT
In force
27 min
Issued by
NWS Miami, FL
Area
Whole counties

County Monroe County, FL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Key West, FL (KEYW), launched 00:00Z, 11.8 hours before the alert went out and 137 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 1987-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2608 joules per kilogram.LCLLFCEL10008507005003002001001 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 1987-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.1939Sfc1 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
2608 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
977 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
27 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.

000 
TTAA00 KMIA 191148
TORMIA
FLC087-191215-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MIAMI FL
748 AM EDT WED AUG 19 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A
TORNADO WARNING AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  815 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH FLORIDA
          ...THE UPPER KEYS PORTION OF MONROE COUNTY
 
AND ADJOINING COASTAL WATERS BETWEEN CRAIG KEY AND TAVERNIER.
 
 
THE PLANTATION KEY  SHERIFFS OFFICE REPORTED A LARGE WATERSPOUT
MOVING TOWARD PLANTATION KEY AT 743 AM EDT.
 
IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY..AND YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY
TO RELAY YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER
SERVICE OFFICE.

Nearby

Tornado Warnings in Florida, 1987Every tornado warning in 1987Tornadoes in 1987

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.