Alert archive / Florida / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 52, NWS Miami, FL

June 29, 1998Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 29, 1998, 1:28 PM EDT for Miami-Dade County, Florida. It was in force for 32 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, 1:28 PM EDT (17:28 UTC)
Expired
Jun 29, 1998, 2:00 PM EDT
In force
32 min
Issued by
NWS Miami, FL
Area
Whole counties

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 9 km from the middle of the area, began a volume at 17:31 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, 5.5 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 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.

565 
WUUS1 KMIA 291729 RRA
SVRMIA
FLC025-291800-

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

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 200 PM EDT

* AT 125 PM EDT... SPOTTER REPORTS INDICATED A SEVERE THUNDERSTORM 4
  MILES SOUTH OF KENDALL OR 3 MILES SOUTH OF PINECREST MOVING
  NORTHEAST AT 5 MPH. WINDS BLEW DOWN A LARGE OAK TREE IN THE CUTLER
  RIDGE AREA NEAR THE INTERSECTION OF SW 175TH STREET AND 93 AVENUE

* SOME LOCATIONS NEAR THE PATH OF THIS STORM ARE...
  KENDALL                        BY ABOUT 135 PM EDT
  PINECREST                      BY ABOUT 135 PM EDT

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 29, 10:00 AM EDT, 3 hours 28 minutes before
AMZ610-630-631-650>654-656-670>676-FLZ063-066>078-292200-

SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MIAMI FL
1000 AM EDT MON JUN 29 1998

...THUNDERSTORMS AND HEAVY RAINSHOWERS  ACROSS SOUTH FLORIDA TODAY...
THE AIR MASS OVER SOUTH FLORIDA IS MORE UNSTABLE TODAY. CONDITIONS ARE
FAVORABLE FOR BRIEF HEAVY RAINSHOWERS TO DEVELOP JUST BEFORE NOON AND
CONTINUE INTO THE EARLY AFTERNOON.

STEERING WINDS ARE VERY LIGHT SO LITTLE MOVEMENT OF THERSE SHOWERS IS
EXPECTED. THUS RAINFALL AMOUNTS BETWEEN AN INCH AND A HALF AND TWO
INCHES WILL BE POSSIBLE. WIND GUSTS NEAR 40 MPH ARE ALSO POSSIBLE
NEAR THE SHOWERS.

DURING THE LATE AFTERNOON AND THROUGH THE EVENING THUNDERSTORMS WILL
BE PRESENT. THE MOST FAVORABLE AREAS FOR THESE WILL BE OUTSIDE OF THE
AREAS THAT RECEIVED RAINSHOWERS EARLIER. FREQUENT LIGHTNING... GUSTY
WINDS... AND TORRENTIAL RAINFALL WITH AMOUINTS OVER TWO INCHES IN LESS
THAN AN HOUR WILL ACCOMPANY THESE THUNDERSTORMS.
Special weather statement, Jun 29, 10:00 AM EDT, 3 hours 28 minutes before
AMZ610-630-631-650>654-656-670>676-FLZ063-066>078-292200-

SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MIAMI FL
1000 AM EDT MON JUN 29 1998

...THUNDERSTORMS AND HEAVY RAINSHOWERS  ACROSS SOUTH FLORIDA TODAY...
THE AIR MASS OVER SOUTH FLORIDA IS MORE UNSTABLE TODAY. CONDITIONS ARE
FAVORABLE FOR BRIEF HEAVY RAINSHOWERS TO DEVELOP JUST BEFORE NOON AND
CONTINUE INTO THE EARLY AFTERNOON.

STEERING WINDS ARE VERY LIGHT SO LITTLE MOVEMENT OF THERSE SHOWERS IS
EXPECTED. THUS RAINFALL AMOUNTS BETWEEN AN INCH AND A HALF AND TWO
INCHES WILL BE POSSIBLE. WIND GUSTS NEAR 40 MPH ARE ALSO POSSIBLE
NEAR THE SHOWERS.

DURING THE LATE AFTERNOON AND THROUGH THE EVENING THUNDERSTORMS WILL
BE PRESENT. THE MOST FAVORABLE AREAS FOR THESE WILL BE OUTSIDE OF THE
AREAS THAT RECEIVED RAINSHOWERS EARLIER. FREQUENT LIGHTNING... GUSTY
WINDS... AND TORRENTIAL RAINFALL WITH AMOUINTS OVER TWO INCHES IN LESS
THAN AN HOUR WILL ACCOMPANY THESE THUNDERSTORMS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 3:03 PM EDTSevere Thunderstorm WarningMFLPalm Beach62 min
Jun 29, 4:04 PM EDTSevere Thunderstorm WarningMFLPalm Beach61 min
Jun 29, 4:22 PM EDTSevere Thunderstorm WarningMFLCollier63 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.