Alert archive / Florida / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 13, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Feb 22, 1993, 8:42 PM EST for Martin County, Palm Beach County, Florida. It was in force for 48 min.
The area
The counties it named.
The facts
- Issued
- Feb 22, 1993, 8:42 PM EST (01:42 UTC)
- Expired
- Feb 22, 1993, 9:30 PM EST
- In force
- 48 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
Counties Martin County, FL, Palm Beach County, FL
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 00:00Z, 1.7 hours before the alert went out and 179 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
- 150 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 751 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPBI 230142 SVRPBI FLC085-099-230230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WEST PALM BEACH FL 842 PM EST MON FEB 22 1993 THE NATIONAL WEATHER SERVICE IN WEST PALM BEACH HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM EST FOR THE FOLLOWING LOCATIONS... IN SOUTHEAST FLORIDA ...SOUTHERN MARTIN COUNTY...NORTHERN PALM BEACH COUNTY AND THE ADJACANT WATERS OF THE SOUTHEAST FLORIDA COAST AT 840PM EST RADAR INDICATED A SEVERE THUNDERSTORM OVER SOUTHEAST LAKE OKEECHOBEE AND WAS MOVING EAST AT 40 MPH. BOATERS ON THE LAKE SHOULD SEEK SAFE HARBOUR IMMEDIATELY. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. NNNN
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, 3:45 PM EST, 4 hours 57 minutes before
FLZ006>017-020-222140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DAYTONA BEACH FL 340 PM EST MON FEB 22 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF CENTRAL FLORIDA AND THE ADJACENT COASTAL WATERS UNTIL 700 PM...AND INCLUDES VOLUSIA COUNTY... THUNDERSTORMS CONTINUED OVER CENTRAL FLORIDA...REACHING FROM THE EAST COAST OVER CAPE CANAVERAL...INTO THE INTERIOR SOUTH OF ORLANDO AND LAKELAND...CONTINUING TO THE GULF COAST JUST SOUTH OF TAMPA. THESE THUNDERSTORMS ALSO EXTENDED OVER THE COASTAL AND OFFSHORE WATERS...NORTHEAST THROUGH SOUTHEAST OF CAPE CANAVERAL. THE HEAVIEST RAINFALL WAS OVER CAPE CANAVERAL...NEAR THE KENNEDY SPACE CENTER. THESE THUNDERSTORMS WERE INCLUDED IN A LARGE AREA OF RAIN THAT COVERED A GOOD PART OF NORTHEAST AND CENTRAL FLORIDA AND THE ADJACENT COASTAL WATERS. THE THUNDERSTORMS WERE MOVING RAPIDLY EAST AT 40 MPH...WHILE THE RAIN AREA WAS SLIPPING SOUTHEAST AT 10 MPH. 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 THREATENING WEATHER CONDITION S AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Feb 22, 4:52 PM EST, 3 hours 50 minutes before
FLZ006>017-020-222240- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DAYTONA BEACH FL 440 PM EST MON FEB 22 1993 ...THE SEVERE THUNDERSTORM WATCH IS NO LONGER IN EFFECT FOR A PORTION OF CENTRAL FLORIDA WHICH INCLUDES ALL OF VOLUSIA COUNTY AND THE ADJACENT COASTAL WATERS. AT 425 PM EST...RADAR DETECTED A NARROW BAND OF THUNDERSTORMS WITH VERY HEAVY RAIN FROM WAUCHULA TO MELBOURNE...SEAWARD TO 40 MILES OFFSHORE CAPE CANAVERAL. THE THUNDERSTORMS WERE INCLUDED IN AN AREA OF RAIN WITH THE NORTHERN FRINGE EXTENDING FROM TAMPA TO SANFORD TO DAYTONA BEACH. RAIN BLANKETED MUCH OF THE ATLANTIC OCEAN BETWEEN MELBOURNE AND FERNANDINA BEACH AND LINGERED INLAND TO JACKSONVILLE . THE AREA OF RAIN AND THUNDERSTORMS WAS DRIFTING SOUTHEAST AT 10 MPH.
Special weather statement, Feb 22, 7:25 PM EST, 1 hour 17 minutes before
FLZ017-011-016-012-009-230130- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 724 PM EST MON FEB 22 1993 ...SEVERE THUNDERSTORM WATCH IS CANCELLED FOR INDIAN RIVER COUNTY... ...SPECIAL MARINE WARNING IS CANCELLED FROM MELBOURNE BEACH TO VERO BEACH... AT 715 PM AN AREA OF STRONG THUNDERSTORMS WAS SOUTH OF INDIAN RIVER COUNTY AND HAD MOVED OUT OF THE COASTAL WATERS FROM MELBOURNE BEACH TO VERO BEACH. SHOWERS WERE STILL JUST OFFSHORE FROM SEBASTIAN TO VERO BEACH AND WERE MOVING EAST AT 35 MPH. ELSEWHERE PATCHES OF RAIN WERE OVER THE COASTAL WATERS FROM ST AUGUSTINE TO DAYTONA BEACH INLAND TO MT DORA AND OCALA. THE RAIN WAS MOVING SOUTHEAST AT 25 MPH.> THROUGH 9 PM...PATCHES OF RAIN WILL MOVE TO CAPE CANAVERAL ACROSS ORLANDO. SHOWERS WILL BE OFFSHORE OF VERO BEACH.
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.