Alert archive / Florida / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 55, NWS Miami, FL

June 29, 1998Collier County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 29, 1998, 4:22 PM EDT for Collier County, Florida. It was in force for 63 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 29, 1998, 4:22 PM EDT (20:22 UTC)
Expired
Jun 29, 1998, 5:25 PM EDT
In force
63 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 20:23 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, 8.4 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 1998-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2741 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 1998-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
2741 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
811 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
-8 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.

594 
WUUS1 KMIA 292023 RRA
SVRMIA
FLC021-292125-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
422 PM EDT MON JUN 29 1998

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 525 PM EDT

* AT 419 PM EDT... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8
  MILES SOUTHEAST OF EVERGLADES CITY MOVING NORTH AT LESS THAN 5 MPH.

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

Local storm report, Jun 29, 1:33 PM EDT, 2 hours 49 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MIAMI, FL
133 PM EDT MON JUN 29 1998

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

1319 EDT   CUTLER RIDGE              FL   WIND DAMAGE...LARGE OAK
06/29/98   DADE                           TREE BLOWN OVER
Local storm report, Jun 29, 1:33 PM EDT, 2 hours 49 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MIAMI, FL
133 PM EDT MON JUN 29 1998

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

1319 EDT   CUTLER RIDGE              FL   WIND DAMAGE...LARGE OAK
06/29/98   DADE                           TREE BLOWN OVER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 1:28 PM EDTSevere Thunderstorm WarningMFLMiami-Dade32 min
Jun 29, 3:03 PM EDTSevere Thunderstorm WarningMFLPalm Beach62 min
Jun 29, 4:04 PM EDTSevere Thunderstorm WarningMFLPalm Beach61 min

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.