Alert archive / Florida / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 4, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Feb 22, 1993, 8:29 PM EST for Collier County, Florida. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Feb 22, 1993, 8:29 PM EST (01:29 UTC)
- Expired
- Feb 22, 1993, 10:30 PM EST
- In force
- 2 hr
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Collier County, FL
The nearest sounding before it
Key West, FL (KEYW), launched 00:00Z, 1.5 hours before the alert went out and 174 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
- 1881 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 947 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 2.1
- Supercell composite
- 10.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 230129 SVRMIA FLC021-FLZ921-230330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MIAMI FL 829 PM EST MON FEB 22 1993 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 1030 PM EST FOR PEOPLE IN THE FOLLOWING LOCATION...... IN SOUTHWEST FLORIDA ...COLLIER COUNTY AND FOR BOATERS ON THE COASTAL WATERS FROM ...BONITA BEACH TO EVERGLADES CITY AT 825 PM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM IN THE COASTAL WATERS BETWEEN NAPLES AND MARCO ISLAND MOVING EAST AT 35 TO 40 MPH. SKYWARN REPORTS IN NAPLES REPORTED 1/4 INCH HAIL AND WIND GUSTS TO NEAR 40 MPH. THUNDERSTORMS THREATEN BOATER SAFETY WITH GUSTY WINDS OF 35 KNOTS OR GREATER...ROUGH SEAS AND LIGHTNING. YOUR BEST COURSE OF ACTION IS TO SEEK SAFE HARBOR...BUT IF YOU ARE CAUGHT ON THE OPEN WATER... STAY BELOW DECK AND AWAY FROM UNGROUNDED METAL OBJECTS. MAKE SURE YOU AND ALL YOUR CREW ARE WEARING FLOTATION DEVICES. &
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, Feb 22, 5:48 PM EST, 2 hours 41 minutes before
FLZ011-013>023-222130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE WEST PALM BEACH FL 530 PM EST MON FEB 22 1993 ..... SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 11PM EST FOR CENTRAL AND SOUTH FLORIDA INCLUDING GLADES... HENDRY... OKEECHOBEE.. MARTIN... ST. LUCIE... PALM BEACH COUNTIES... AT 530 PM EST A LINE OF INTENSE THUNDERSTORMS CONTAINING VERY HEAVY RAIN EXTENDED FROM DESOTA COUNTY NORTHEASTWARD TO 60 MILES OFFSHORE INDIAN RIVER COUNTY. THIS LINE WAS MOVING SOUTHEAST AT 30 MILES AN HOUR. ELSEWHERE AN AREA OF INTENSE THUNDERSTORMS AND RAIN COVERED THE PENINSULA FROM TITUSVILLE TO MARTIN COUNTY AND FROM FORT MYERS EASTWARD TO 140 MILES OFF THE EAST COAST. THE HEAVIST CELL WAS OVER MARTIN COUNTY 15 MILES NORTHWEST OF INDIAN TOWN. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR. A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. NNNN ]
Special weather statement, Feb 22, 6:22 PM EST, 2 hours 7 minutes before
FLZ022-018-019-021-230030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 621 PM EST MON FEB 22 1993 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTH FLORIDA EFFECTIVE UNTIL 11 PM EST. THE WATCH AREA INCLUDES THE FOLLOWING COUNTIES ... DADE ... BROWARD ... COLLIER ... HENDRY ... GLADES ... AND MAINLAND MONROE... LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING THUNDERSTORM WINDS AND POSSIBLE WITHIN THE WATCH AREA. AT 6 PM A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN..STRONG GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING ... STRETCHED OVER THE PENINSULA FROM OKEECHOBEE COUNTY TO OFFSHORE DESOTO COUNTY. THESE THUNDERSTORMS WERE MOVING RAPIDLY NORTHEAST AT 35 MILES AN HOUR. REMEMBER A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSZIBLE WARNINGS.
Special weather statement, Feb 22, 6:23 PM EST, 2 hours 6 minutes before
FLZ022-018-019-021-230030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 621 PM EST MON FEB 22 1993 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTH FLORIDA EFFECTIVE UNTIL 11 PM EST. THE WATCH AREA INCLUDES THE FOLLOWING COUNTIES ... DADE ... BROWARD ... COLLIER ... HENDRY ... GLADES ... AND MAINLAND MONROE... LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING THUNDERSTORM WINDS AND POSSIBLE WITHIN THE WATCH AREA. AT 6 PM A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN..STRONG GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING ... STRETCHED OVER THE PENINSULA FROM OKEECHOBEE COUNTY TO OFFSHORE DESOTO COUNTY. THESE THUNDERSTORMS WERE MOVING RAPIDLY NORTHEAST AT 35 MILES AN HOUR. REMEMBER A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSS\IBLE WARNINGS.
Special weather statement, Feb 22, 6:50 PM EST, 1 hour 39 minutes before
FLZ011-013>023-222130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE WEST PALM BEACH FL 630 PM EST MON FEB 22 1993 ..... SEVERE THUNDERSTORM WARNING IN EFFECT OKEECHOBEE MARTIN AND ST LUCIE COUNTIES UNTIL 730 PM EST... ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 11PM EST FOR CENTRAL AND SOUTH FLORIDA INCLUDING GLADES... HENDRY... OKEECHOBEE.. MARTIN... ST. LUCIE... PALM BEACH COUNTIES... AT 630 PM EST A LINE OF INTENSE THUNDERSTORMS CONTAINING VERY HEAVY RAIN EXTENDED FROM FORT MYERS NORTHEASTWARD TO VERO BEACH. THIS LINE WAS MOVING SOUTHEAST AT 30 TO 35 MILES AN HOUR. ELSEWHERE AN AREA OF INTENSE THUNDERSTORMS AND RAIN COVERED THE PENINSULA FROM MELBOURNE TO DADE COUNTY AND FROM 70 MILES EAST OF FORT MYERS EASTWARD TO 200 MILES OFF THE EAST COAST. THE HEAVIST CELL WAS OVER NORTHWEST MARTIN COUNTY...WHERE HAIL AND WIND GUSTS TO 50 MILES AN HOUR WERE OBSEREVED. A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. NNNN
Special weather statement, Feb 22, 7:11 PM EST, 1 hour 18 minutes before
FLZ022-018-019-021-230130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 715 PM EST MON FEB 22 1993 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTH FLORIDA EFFECTIVE UNTIL 11 PM EST. THE WATCH AREA INCLUDES THE FOLLOWING COUNTIES ... DADE ... BROWARD ... COLLIER ... HENDRY ... GLADES ... AND MAINLAND MONROE... LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING THUNDERSTORM WINDS AND POSSIBLE WITHIN THE WATCH AREA. AT 700 PM A LARGE BAND OF THUNDERSTORMS WITH VERY HEAVY RAIN STRETCHED OVER THE PENINSULA FROM THE FORT MYERS AREA TO OFFSHORE MARTIN COUNTY. THE MAIN RAIN AREA WAS MOVING SOUTHEAST AT ABOUT 30 MILES AN HOURS WHILE INDIVIDUAL THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MILES AN HOUR. REMEMBER A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ALERT FOR SEVERE WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Feb 22, 7:48 PM EST, 41 minutes before
FLZ011-013>023-222130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE WEST PALM BEACH FL 730 PM EST MON FEB 22 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 11PM EST FOR CENTRAL AND SOUTH FLORIDA INCLUDING GLADES... HENDRY... OKEECHOBEE.. MARTIN... ST. LUCIE... PALM BEACH COUNTIES... AT 730 PM EST A LINE OF INTENSE THUNDERSTORMS CONTAINING VERY HEAVY RAIN EXTENDED FROM MARTIN COUNTY...JUST WEST OF JUPITER...TO 50 MILES OFFSHORE. THE HEAVIEST CELL WAS OVER THE MATIN COUNTY COASTAL WATERS. MOVEMENT OF THE LINE WAS SOUTHEAST AT 35 MILES AN HOUR. ELSEWHERE AN AREA OF INTENSE THUNDERSTORMS AND RAIN COVERED THE PENINSULA FROM FORT PIERCE TO NAPLES. THE HEAVIEST CELL WAS JUST OFFSHORE NAPLES IN THE GULF. MOVEMENT WAS EAST AT 35 MILES AN HOUR. A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. NNNN
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 7:25 PM EST | Severe Thunderstorm Warning | MFL | Collier | 65 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1993Every severe thunderstorm warning in 1993
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.