Alert archive / Florida / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 47, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Oct 31, 1994, 3:13 AM EST for Miami-Dade County, Florida. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Oct 31, 1994, 3:13 AM EST (08:13 UTC)
- Expired
- Oct 31, 1994, 5:15 AM EST
- In force
- 2 hr
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Miami-Dade County, FL
The nearest sounding before it
Key West, FL (KEYW), launched 00:00Z, 8.2 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
- 2915 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 708 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 310813 RRA SVRMIA FLC011-025-FLZ502-311015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MIAMI FL 313 AM EST MON OCT 31 1994 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 515 AM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST FLORIDA ...SOUTHEASTERN BROWARD COUNTY...DADE COUNTY AND FOR BOATERS ON THE COASTAL WATERS FROM ...DEERFIELD BEACH TO HALLANDALE ...HALLANDALE TO KEY LARGO ...SEVERE THUNDERSTORMS EXTEND ACROSS MOST OF DADE COUNTY... AT 306 AM SEVERE THUNDERSTORMS EXTENDED FROM 20 MILES EAST OF HALLANDALE WEST ACROSS CAROL CITY...HIALEAH...SWEETWATER ALL THE WAY TO THE DADE AND MONROE COUNTY LINE. THESE STORMS WERE ALL MOVING SLOWLY EAST ABOUT 5 TO 10 MPH. 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. THUNDERSTORMS THREATEN BOATER SAFETY WITH GUSTY WINDS IN EXCESS OF 35 KNOTS...ROUGH SEAS AND DEADLY LIGHTNING. YOUR BEST COURSE OF ACTION IS TO SEEK SAFE HARBOR...BUT IF YOU ARE CAUGHT ON THE OPEN WATER...STAY BELOW DECK OR KEEP A LOW PROFILE AND KEEP AWAY FROM UNGROUNDED METAL OBJECTS. IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN REPORT THE SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
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, Oct 30, 9:33 PM EST, 5 hours 40 minutes before
FLZ067-310330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WEST PALM BEACH FL 933 PM EST SUN OCT 30 1994 AT 925 PM NATIONAL WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS OVER CENTRAL PALM BEACH COUNTY. AS THESE THUNDERSTORMS MOVE NORTHEAST 10 TO 15 MILES AN HOUR THROUGH PALM BEACH COUNTY THEY MAY PRODUCED VERY HEA RAINFALL...STRONG GUSTY WINDS...DANGEROUS LIGHTNING STRIKES AND PONDING WATERS ON ROADWAYS. MOTORIST SHOULD BE ALERT FOR REDUCED VISIBILITY IN H VRAINFALL. NNNN
Special weather statement, Oct 31, 1:12 AM EST, 2 hours 1 minute before
FLZ071>074-310815- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 112 AM EST MON OCT 31 1994 ...INTENSE THUNDERSTORMS IN WESTERN BROWARD AND NORTHWEST DADE... A LARGE INTENSE THUNDERSTORM COVERED MUCH OF WESTERN BROWARD COUNTY AND PART OF NORTHWEST DADE AT 103 AM. THIS THUNDERSTORM WAS ABOUT 10 MILES WEST OF PEMBROKE PINES AND 10 MILES NORTHWEST OF HIALEAH. THE STORM WAS MOVING EAST SOUTHEAST ABOUT 10 MPH. IT SHOULD MOVE ACROSS HIGHWAY 27 SHORTLY AND INTO THE WESTERN SUBURBS OF BROWARD COUNTY FROM TAMARAC SOUTH THROUGH MIRAMAR AND INTO HIALEAH BETWEEN 2 AND 3 AM. RESIDENTS CAN EXPECT WIND GUSTS TO 40 MPH...SMALL HAIL...FREQUENT LIGHTNING AND HEAVY RAIN AS THESE STORMS PASS THROUGH SOUTHEAST FLORIDA. IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING DOWNPOURS OF RAIN. STREETS MAY FLOOD QUICKLY.
Special weather statement, Oct 31, 1:13 AM EST, 2 hours before
FLZ071>074-310815- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 112 AM EST MON OCT 31 1994 ...INTENSE THUNDERSTORMS IN WESTERN BROWARD AND NORTHWEST DADE... A LARGE INTENSE THUNDERSTORM COVERED MUCH OF WESTERN BROWARD COUNTY AND PART OF NORTHWEST DADE AT 103 AM. THIS THUNDERSTORM WAS ABOUT 10 MILES WEST OF PEMBROKE PINES AND 10 MILES NORTHWEST OF HIALEAH. THE STORM WAS MOVING EAST SOUTHEAST ABOUT 10 MPH. IT SHOULD MOVE ACROSS HIGHWAY 27 SHORTLY AND INTO THE WESTERN SUBURBS OF BROWARD COUNTY FROM TAMARAC SOUTH THROUGH MIRAMAR AND INTO HIALEAH BETWEEN 2 AND 3 AM. RESIDENTS CAN EXPECT WIND GUSTS TO 40 MPH...SMALL HAIL...FREQUENT LIGHTNING AND HEAVY RAIN AS THESE STORMS PASS THROUGH SOUTHEAST FLORIDA. IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING DOWNPOURS OF RAIN. STREETS MAY FLOOD QUICKLY.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 31, 1:41 AM EST | Severe Thunderstorm Warning | MFL | Broward | 64 min |
| Oct 31, 2:31 AM EST | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 59 min |
| Oct 31, 3:13 AM EST | Severe Thunderstorm Warning | MFL | Broward | 37 min |
| Oct 31, 5:37 AM EST | Flash Flood Warning | MFL | Miami-Dade | 4 hr |
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.