Alert archive / Florida / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 63, NWS Miami, FL

May 19, 1999Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 19, 1999, 2:42 PM EDT for Miami-Dade County, Florida. It was in force for 33 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
May 19, 1999, 2:42 PM EDT (18:42 UTC)
Expired
May 19, 1999, 3:15 PM EDT
In force
33 min
Issued by
NWS Miami, FL
Area
Whole counties

County Miami-Dade County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 6.7 hours before the alert went out and 31 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 1999-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 275 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 1999-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
275 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1223 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
41 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.

999 
WUUS1 KMIA 191844 RRA
SVRMIA
FLC025-191915-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
242 PM EDT WED MAY 19 1999

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN DADE COUNTY IN SOUTHEASTERN FLORIDA

* UNTIL 315 PM EDT

* AT 240 PM EDT MIAMI NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A SEVERE THUNDERSTORM NEAR PERRINE DRIFTING SOUTHWEST
  AROUND 10 MPH. 3/4 INCH HAIL HAS BEEN REPORTED FROM CUTLER RIDGE
  AND PINECREST AROUND 235 PM EDT.

* SOME LOCATIONS AFFECTED...
  PERRINE...CUTLER RIDGE...GOULDS...PRINCETON...NARANJA...LEISURE
  CITY...HOMESTEAD...FLORIDA CITY

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.





&

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 1:04 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade61 min
May 19, 1:42 PM EDTSevere Thunderstorm WarningMFLMiami-Dade63 min

Nearby

Severe Thunderstorm Warnings in Florida, 1999Every severe thunderstorm warning in 1999

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.