Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 124, NWS Miami, FL

August 6, 1997Broward County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Aug 6, 1997, 3:15 PM EDT for Broward County, Florida. It was in force for 75 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 6, 1997, 3:15 PM EDT (19:15 UTC)
Expired
Aug 6, 1997, 4:30 PM EDT
In force
75 min
Issued by
NWS Miami, FL
Area
Whole counties

County Broward County, FL

The radar

The Miami radar (KAMX), 60 km from the middle of the area, began a volume at 19:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 7.3 hours before the alert went out and 40 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, Miami, FL at 12:00Z on 1997-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2371 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, Miami, FL at 12:00Z on 1997-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
2371 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
44 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 061919 RRA
SVRMIA
FLC011-062015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
315 PM EDT WED AUG 6 1997
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST FLORIDA
 
   ...BROWARD COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES THUNDERSTORMS
WHICH MAY BECOME SEVERE BETWEEN 315 AND 430 PM OVER PORTIONS OF
METROPOLITAN BROWARD COUNTY EXTENDING FROM THE SUNRISE PLANTATION
AREA EAST TO WILTON MANORS AND FT. LAUDERDALE AND ADJACENT ATANTIC
WATERS. ACTIVITY WILL BE SPREADING EAST AND SOUTH OVER SOUTH PARTS
OF BROWARD.
 
 
DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. SEEK
SHELTER IN A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE
TELEPHONES OR nELECTRICAL APPLIANCES. BOATERS ON COASTAL WATERS SHOULD
GO TO SAFE HAROR.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Aug 6, 2:44 PM EDT, 31 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MIAMI, FL
244 PM EDT WED AUG 06 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0210 PM    POMPANO BEACH             FL   TORNADO
08/06/97   BROWARD                        A SMALL TORNADO WAS
                                          REPORTED TO TOUCH DOWN
                                          BRIEFLY NEAR THE POMPANO
                                          HARNESS TRACK. SOME DAMAGE
                                          TO SHINGLES ON A BUILDING
                                          ROOF WAS REPORTED...A TRUCK
                                          WAS OVERTURNED...TREES WERE
                                          DOWNED ALONG SW 3RD STREET
                                          EAST OF POWERLINE ROAD.
Local storm report, Aug 6, 2:46 PM EDT, 29 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MIAMI, FL
244 PM EDT WED AUG 06 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0210 PM    POMPANO BEACH             FL   TORNADO
08/06/97   BROWARD                        A SMALL TORNADO WAS
                                          REPORTED TO TOUCH DOWN
                                          BRIEFLY NEAR THE POMPANO
                                          HARNESS TRACK. SOME DAMAGE
                                          TO SHINGLES ON A BUILDING
                                          ROOF WAS REPORTED...A TRUCK
                                          WAS OVERTURNED...TREES WERE
     4                                     DOWNED ALONG SW 3RD STREET
                                          EAST OF POWERLINE ROAD.

Nearby

Severe Thunderstorm Warnings in Florida, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.