Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 52, NWS Miami, FL

June 15, 1997Monroe County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 15, 1997, 2:30 AM EDT for Monroe County, Florida. It was in force for 45 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: Jun 15, 1997, 2:30 AM EDT (06:30 UTC)
Expired: Jun 15, 1997, 3:15 AM EDT
In force: 45 min
Issued by: NWS Miami, FL
Area: Whole counties

County Monroe County, FL

The radar

The Miami radar (KAMX), 51 km from the middle of the area, began a volume at 06:29 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 00:00Z, 6.5 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: 1416 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 300 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 10.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 150632 RRA
SVRMIA
FLC087-150715-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MIAMI FL
230 AM EDT SUN JUN 15 1997
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  315 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTH FLORIDA
 
   ...EASTERN MONROE COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
 
AT 227 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM OVER THE NORTHWEST PART OF BARNES SOUND MOVING SOUTHEAST AT
20 MPH. THE STORM WILL CROSS BARNES SOUND THROUGH 245 AM AND MOVE OVER
THE EXTREME NORTHEAST PART OF KEY LARGO IN THE AREA OF CROCODILE LAKE
NATIONAL WILDLIFE REFUGE BY 300 AM.
 
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 DUSE
TELEPHONES OR ELECTRICAL APPLIANCES. WATERSPOUTS ARE ALSO POSSIBLE WITH
THIS STORM. BOATERS SHOULD SEEK SAFE HARBOR UNTIL THE STORM HAS PASSED.

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, Jun 14, 10:25 PM EDT, 4 hours 5 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE MIAMI, FL
1025 PM EDT SAT JUN 14 1997

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

0735 PM    WESTON                    FL
06/14/97   BROWARD                        WIND GUSTS OF 50 MPH WERE
                                          REPORTED AT WESTON WHICH
                                          LIES BETWEEN INTERSTATE 75
                                          AND GRIFFIN ROAD WEST OF
                                          DAVIE.

Local storm report, Jun 14, 10:27 PM EDT, 4 hours 3 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE MIAMI, FL
1025 PM EDT SAT JUN 14 1997

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

0735 PM    WESTON                    FL
06/14/97   BROWARD                        WIND GUSTS OF 50 MPH WERE
                                          REPORTED AT WESTON WHICH
                                          LIES BETWEEN INTERSTATE 75
                                          AND GRIFFIN ROAD WEST OF
                                          DAVIE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 8:10 PM EDT	Severe Thunderstorm Warning	MFL	Broward	65 min
Jun 15, 3:17 AM EDT	Severe Thunderstorm Warning	MFL	Monroe	58 min
Jun 15, 12:41 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	34 min

Nearby

Severe Thunderstorm Warnings in Florida, 1997 Every 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.