Alert archive / Florida / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 39, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Sep 4, 1994, 3:20 PM EDT for Miami-Dade County, Florida. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Sep 4, 1994, 3:20 PM EDT (19:20 UTC)
- Expired
- Sep 4, 1994, 4:15 PM EDT
- In force
- 55 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Miami-Dade County, FL
The nearest sounding before it
Key West, FL (KEYW), launched 12:00Z, 7.3 hours before the alert went out and 169 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.
- Mixed-layer CAPE
- 1570 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 897 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 041924 RRA SVRMIA FLC025-042015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MIAMI FL 320 PM EDT SUN SEP 4 1994 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 415 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN SOUTHEAST FLORIDA ...DADE COUNTY AND THE ADJACENT COASTAL WATERS ALONG THE SOUTHEAST FLORIDA COAST ...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A THUNDERSTORM OVER MIAMI WHICH WILL BE DEVELOPING INTO A SEVERE STORM BY AROUND 330 PM... THIS STORM IS OVER THE NORTH PART OF POPULATED DADE COUNTY...IS MOVING SOUTH OVER THE CITY OF MIAMI CLOSE TO AND ALONG I-95... AND MAY LATER AFFECT AREAS OF CENTRAL AND SOUTH DADE. BOATERS IN THE COASTAL WATERS...INTRACOASTAL WATERWAY...AND NORTHERN BISCAYNE BAY SHOULD ALSO TAKE PRECAUTIONS. 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 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, Sep 4, 2:30 PM EDT, 50 minutes before
FLZ063-066-069>074-502-504-041930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 230 PM EDT SUN SEP 4 1994 ...SCATTERED SHOWERS AND THUNDERSTORMS ARE DEVELOPING OVER THE MIAMI- FT. LAUDERDALE METROPOLITAN AREA... ...PEOPLE ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE ALERT FOR THREATENING CLOUDS AND THE DANGER OF LIGHTNING... AT 230 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN MIAMI DETECTED DEVELOPING SHOWERS AND THUNDERSTORMS OVER BROWARD AND DADE COUNTIES. THIS ACTIVITY WAS ALONG THE SEA BREEZE...PARALLEL TO THE COAST STRETCHING FROM PALM BEACH TO FT. LAUDERDALE TO SOUTH OF MIAMI. OTHER SCATTERED SHOWERS AND THUNDERSTORMS WERE ALONG THE WEST COAST SEA BREEZE EXTENDING FROM FT. MYERS TO 5 MILES EAST OF NAPLES TO EVERGLADES CITY. SEVERAL STRONG THUNDERSTORMS WERE ALONG THE COAST IN EVERGLADES NATIONAL PARK EAST OF CAPE SABLE. THROUGH 5 PM...SHOWERS AND THUNDERSTORMS WILL INCREASE OVER SOUTHEAST FLORIDA INCLUDING THE MIAMI-FT. LAUDERDALE AREA. SOME STORMS MAY BECOME STRONG WITH GUSTY WINDS...AND OF COURSE DANGEROUS LIGHTNING. THIS ACTIVITY WILL MOVE LITTLE AND MAY DRIFT TOWARD THE BEACHES. ACTIVITY NEAR THE FLORIDA GULF COAST WILL MOVE SLOWLY INLAND TOWARD THE SOUTHEAST. ALSO STORMS OVER EVERGLADES NATIONAL PARK WILL BE MOVING SOUTH INTO FLORIDA BAY FROM THE MAINLAND. OVER OCEAN AREAS SURROUNDING SOUTH FLORIDA WIDELY SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL PERSIST OVER THE GULF OF MEXICO NORTHWEST OF KEY WEST. ISOLATED SHOWERS WILL DOT OFFSHORE ATLANTIC WATERS...BUT STORMS DEVELOPING OVER SOUTH FLORIDA MAY MOVE INTO ATLANTIC COASTAL WATERS LATER ON.
Special weather statement, Sep 4, 2:33 PM EDT, 47 minutes before
FLZ063-066-069>074-502-504-041930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 230 PM EDT SUN SEP 4 1994 ...SCATTERED SHOWERS AND THUNDERSTORMS ARE DEVELOPING OVER THE MIAMI- FT. LAUDERDALE METROPOLITAN AREA... ...PEOPLE ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE ALERT FOR THREATENING CLOUDS AND THE DANGER OF LIGHTNING... AT 230 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN MIAMI DETECTED DEVELOPING SHOWERS AND THUNDERSTORMS OVER BROWARD AND DADE COUNTIES. THIS ACTIVITY WAS ALONG THE SEA BREEZE...PARALLEL TO THE COAST STRETCHING FROM PALM BEACH TO FT. LAUDERDALE TO SOUTH OF MIAMI. OTHER SCATTERED SHOWERS AND THUNDERSTORMS WERE ALONG THE WEST COAST SEA BREEZE EXTENDING FROM FT. MYERS TO 5 MILES EAST OF NAPLES TO EVERGLADES CITY. SEVERAL STRONG THUNDERSTORMS WERE ALONG THE COAST IN EVERGLADES NATIONAL PARK EAST OF CAPE SABLE. THROUGH 5 PM...SHOWERS AND THUNDERSTORMS WILL INCREASE OVER SOUTHEAST FLORIDA INCLUDING THE MIAMI-FT. LAUDERDALE AREA. SOME STORMS MAY BECOME STRONG WITH GUSTY WINDS...AND OF COURSE DANGEROUS LIGHTNING. THIS ACTIVITY WILL MOVE LITTLE AND MAY DRIFT TOWARD THE BEACHES. ACTIVITY NEAR THE FLORIDA GULF COAST WILL MOVE SLOWLY INLAND TOWARD THE SOUTHEAST. ALSO STORMS OVER EVERGLADES NATIONAL PARK WILL BE MOVING SOUTH INTO FLORIDA BAY FROM THE MAINLAND. OVER OCEAN AREAS SURROUNDING SOUTH FLORIDA WIDELY SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL PERSIST OVER THE GULF OF MEXICO NORTHWEST OF KEY WEST. ISOLATED SHOWERS WILL DOT OFFSHORE ATLANTIC WATERS...BUT STORMS DEVELOPING OVER SOUTH FLORIDA MAY MOVE INTO ATLANTIC COASTAL WATERS LATER ON.
Nearby
Severe Thunderstorm Warnings in Florida, 1994Every severe thunderstorm warning in 1994
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.