Alert archive / Florida / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 50, NWS Miami, FL

June 23, 1998Collier County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 23, 1998, 5:37 PM EDT for Collier County, Florida. It was in force for 48 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 23, 1998, 5:37 PM EDT (21:37 UTC)
Expired
Jun 23, 1998, 6:25 PM EDT
In force
48 min
Issued by
NWS Miami, FL
Area
Whole counties

County Collier County, FL

The radar

The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 21:36 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, 9.6 hours before the alert went out and 113 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 1998-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 569 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 1998-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
569 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
1201 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
-13 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.

807 
WUUS1 KMIA 232139 RRA
SVRMIA
FLC021-232225-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
537 PM EDT TUE JUN 23 1998

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN COLLIER COUNTY IN SOUTHWESTERN FLORIDA

* UNTIL 625 PM EDT

* AT 535 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED
A DEVELOPING SEVERE THUNDERSTORM OVER GOLDEN GATE. THE
THUNDERSTORM IS MOVING NORTHWEST AT 10 MPH.

* SOME LOCATIONS IN THE PATH OF THE STORM ARE NORTH
NAPLES...NAPLES PARK...AND VANDERBILT BEACH.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. SEEK SHELTER
IN A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES
OR ELECTRICAL APPLIANCES.

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

Special weather statement, Jun 23, 2:30 PM EDT, 3 hours 7 minutes before
AMZ650-FLZ068-231930-

SPECIAL WEATHER STATEMENT...CORRECTION (MOTION OF FUNNEL CLOUD)
NATIONAL WEATHER SERVICE MIAMI FL
230 PM EDT TUE JUN 23 1998

...FUNNEL CLOUD OVER THE ATLANTIC EAST OF PALM BEACH...

A SEVERE WEATHER SPOTTER OBSERVED A FUNNEL CLOUD OVER THE ATLANTIC
EAST OF PALM BEACH AT 225 PM EDT.  THIS FUNNEL CLOUD WHICH WAS ABOUT 1
MILE NORTHEAST OF THE BREAKERS HOTEL SHOULD STAY ALOFT AS IT MOVES WEST
AT 10 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUED AS NEEDED.
Special weather statement, Jun 23, 2:30 PM EDT, 3 hours 7 minutes before
AMZ650-FLZ068-231930-

SPECIAL WEATHER STATEMENT...CORRECTION (MOTION OF FUNNEL CLOUD)
NATIONAL WEATHER SERVICE MIAMI FL
230 PM EDT TUE JUN 23 1998

...FUNNEL CLOUD OVER THE ATLANTIC EAST OF PALM BEACH...

A SEVERE WEATHER SPOTTER OBSERVED A FUNNEL CLOUD OVER THE ATLANTIC
EAST OF PALM BEACH AT 225 PM EDT.  THIS FUNNEL CLOUD WHICH WAS ABOUT 1
MILE NORTHEAST OF THE BREAKERS HOTEL SHOULD STAY ALOFT AS IT MOVES WEST
AT 10 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUED AS NEEDED.
Special weather statement, Jun 23, 2:30 PM EDT, 3 hours 7 minutes before
AMZ650-FLZ068-231930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
230 PM EDT TUE JUN 23 1998

...FUNNEL CLOUD OVER THE ATLANTIC EAST OF PALM BEACH...

A SEVERE WEATHER SPOTTER OBSERVED A FUNNEL CLOUD OVER THE ATLANTIC
EAST OF PALM BEACH AT 225 PM EDT.  THIS FUNNEL CLOUD WHICH WAS ABOUT 1
MILE NORTHEAST OF THE BREAKERS HOTEL SHOULD STAY ALOFT AS IT MOVES EAST
AT 10 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUED AS NEEDED.
Special weather statement, Jun 23, 2:30 PM EDT, 3 hours 7 minutes before
AMZ650-FLZ068-231930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
230 PM EDT TUE JUN 23 1998

...FUNNEL CLOUD OVER THE ATLANTIC EAST OF PALM BEACH...

A SEVERE WEATHER SPOTTER OBSERVED A FUNNEL CLOUD OVER THE ATLANTIC
EAST OF PALM BEACH AT 225 PM EDT.  THIS FUNNEL CLOUD WHICH WAS ABOUT 1
MILE NORTHEAST OF THE BREAKERS HOTEL SHOULD STAY ALOFT AS IT MOVES EAST
AT 10 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUED AS NEEDED.

Nearby

Severe Thunderstorm Warnings in Florida, 1998Every severe thunderstorm warning in 1998

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.