Alert archive / Florida / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 71, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jul 6, 1992, 9:40 PM EDT for Okeechobee County, Florida. It was in force for 65 min.
The area
The counties it named.
The facts
- Issued
- Jul 6, 1992, 9:40 PM EDT (01:40 UTC)
- Expired
- Jul 6, 1992, 10:45 PM EDT
- In force
- 65 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Okeechobee County, FL
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 00:00Z, 1.7 hours before the alert went out and 153 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
- 3613 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 869 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPBI 070140 SVRPBI FLC093-070245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE WEST PALM BEACH FL 940 PM EDT MON JUL 6 1992 THE NATIONAL WEATHER SERVICE IN WEST PALM BEACH HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 1045 PM EDT FOR THE FOLLOWING LOCATIONS... IN SOUTH FLORIDA ...OKEECHOBEE COUNTY AND FOR BOATERS ON THE WATERS... ...OF LAKE OKEECHOBEE AT 930 PM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM IN OKEECHOBEE COUTNY ALONG THE NORTHERN SHORE OF LAKE OKEECHOBEE. THERE HAVE BEEN REPORTS OF POSSIBLE TORNADOES WITH THIS THUNDERTORM. THE THUNDERSTORM WAS MOVING EAST AT 5 TO 10 MPH. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING B,UT STAY AWAY FROM WINDOWS. 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
Local storm report, Jul 6, 4:02 PM EDT, 5 hours 38 minutes before
STORM REPORT...PRELIMINARY
NATIONAL WEATHER SERVICE MELBOURNE FL
402 PM EDT MON JUL 6 1992
TIME LOCATION REPORT
230 PM LAKE COUNTY LAKE COUNTY EMERGENCY MANAGEMENTE REPORTS
~ UMATILLA NUMEROUS TREES DOWN, ROOF OFF TRAVEL TRAILER,
OUT BUILDINGS DESTROYED ON ROUTE 450 WEST
OF UMATILLA.Special weather statement, Jul 6, 4:16 PM EDT, 5 hours 24 minutes before
FLZ017-011-016-062115- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 415 PM EDT MON JUL 6 1992 ...STRONG THUNDERSTORMS FORMING IN THE AFTERNOON HEAT... AT 410 PM EDT...WEATHER RADAR INDICATED SOME RATHER STRONG THUNDERSTORMS FORMING IN THE AFTERNOON HEAT. STRONG THUNDERSTORMS STRETCHED FROM WEST OF OCALA TO 5 MILES NORTH OF LEESBURG...FROM LONGWOOD TO SANFORD...AND FROM BARBERVILLE TO FLAGLER BEACH. SEVERE THUNDERSTORMS WERE ALREADY NOTED OVER FLAGLER COUNTY AND ALSO OVER VOLUSIA COUNTY. WARNINGS ARE IN EFFECT UNTIL 415 PM FOR FLAGLER COUNTY AND UNTIL 500 PM EDT FOR VOLUSIA COUNTY...INCLUDING THE ADJACENT COASTAL WATERS. THE STORMS WERE MOVING EAST AT 10 TO 15 MPH. THROUGH 6PM EDT...STRONG STORMS WILL FORM IN THE AFTERNOON HEAT. THIS IS THE FIFTH CONSECUTIVE DAY OF RECORD...OR NEAR RECORD...HEAT ACROSS CENTRAL FLORIDA. ANY STORM THAT DEVELOPS FOR THE REMAINDER OF THE AFTERNOON HAS THE POTENTIAL TO BECOME QUITE STRONG...WITH A FEW POSSIBLY SEVERE. STRONG STORMS ARE LIKELY FROM LEESBURG AND OCALA...TO SANFORD AND DAYTONA...TO OFFSHORE FROM FLAGLER BEACH TO EDGEWATER. LOCALLY HEAVY RAIN AND FREQUENT LIGHTNING ARE CERTAIN ALONG WITH GUSTY WINDS. HAIL WILL BE LIKELY WITH SOME OF THE MORE INTENSE STORMS.
Special weather statement, Jul 6, 4:47 PM EDT, 4 hours 53 minutes before
FLZ017-011-016-062145- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 448 PM EDT MON JUL 6 1992 ...STRONG THUNDERSTORMS TO AFFECT PARTS OF ORANGE...SEMINOLE...AND BREVARD COUNTIES... ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR VOLUSIA COUNTY AND THE ADJACENT COASTAL WATERS THROUGH 5PM... AT 445 PM EDT...WEATHER RADAR INDICATED STRONG THUNDERSTORMS FORMING FROM JUST NORTH OF ORLANDO...TO NEAR SANFORD...TO NEAR DAYTONA BEACH. THE STORMS IN VOLUSIA COUNTY WERE SEVERE WITH RECENT REPORTS INCLUDING NICKEL HAIL AND UPROOTED TREES. THE STORMS WERE MOVING EAST AT 10 TO 15 MPH. THROUGH 530 PM...STORMS WILL LIKELY BECOME STRONG FROM ORLANDO AND SANFORD...TO TITUSVILLE AND SCOTTSMOOR. SEVERE THUNDERSTORMS WILL CONTINUE OVER PARTS OF VOLUSIA COUNTY AND THEIR COASTAL WATERS THROUGH 5 PM. AREA RESIDENTS SHOULD REMAIN INFORMED OF THE CURRENT WEATHER. BE PREPARED TO ACT IF A WARNING IS ISSUED FOR YOUR AREA. WHEN THUNDERSTORMS ARE OCCURRING...GO INSIDE A SAFE STURDY STRUCTURE AND STAY AWAY FROM THE WINDOWS. IF OVER THE COASTAL WATERS...HEAD FOR SAFE HARBOR IF POSSIBLE WHEN THREATENED BY ADVERSE WEATHER. BE SURE THAT APPROVED FLOATATION DEVICES ARE AVAILABLE FOR BOTH YOU AND YOUR CREW.
Local storm report, Jul 6, 5:46 PM EDT, 3 hours 54 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
530 PM EDT MON JUL 6 1992
7/6/92
3:06 PM EDT ISSUED SPS/SMS FOR FLAGLER AND VOLUSIA COUNTIES.
3:17 PM EDT ISSUED SVR/SMW FOR FLAGLER CO. EFFECTIVE THRU 4:15 PM.
3:55 PM EDT ISSUED TAP/LOCAL AIRPORT ADVISORY FOR DAB
4:00 PM EDT RCVD REPORT OF MARBLE SIZED HAIL FROM PALM COAST, FLAGLER
CO. FROM TV STATION.
4:04 PM EDT ISSUED SVR/SMW FOR VOLUSIA CO. -500 PM. 40 KT PEAK WIND
RECORDED AT DAB AT 409 PM AND 424 PM. AT 4:17 FHP TROOPER
RPTD MARBLE SIZED HAIL ON AIA IN ORMOND-BY-THE-SEA.
4:33 PM EDT SVS ISSUED FOR VOL CO.. AT 4:25 PM VOL CO CD REPORTED
HALF-INCH HAIL FOR 5-MIN DURATION. A MOBILE SKYWARN OPERAT
RPTS 100 YD SWATHE OF NICKEL SIZED HAIL ON I-4 5-6 MI EAST
OF DAB. AT 4:35 PM SKYWARN HAM OPERATOR REPORTED WIND
GUST TO 60 MPH AND PEA SIZED HAIL IN PORT ORANGE NEAR
DUNLAWTON BLVD AND I-95. AT 4:45 PM USCG AT PONCE INLET
REPORTED WIND GUST TO 50 KTS.Special weather statement, Jul 6, 6:36 PM EDT, 3 hours 4 minutes before
FLZ017-011-016-062330- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 635 PM EDT MON JUL 6 1992 ...SEVERE THUNDERSTORMS WARNINGS FOR EAST ORANGE COUNTY AND THE NORTH HALF OF BREVARD COUNTY EXPIRED AT 630 PM EDT... ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 7PM FOR THE BREVARD COUNTY COASTAL WATERS FROM MOSQUITO LAGOON TO MELBOURNE BEACH... AT 630 PM EDT...WEATHER RADAR INDICATED STRONG THUNDERSTORMS CONTINUING OVER PARTS OF EAST CENTRAL FLORIDA AND THE ADJACENT COASTAL WATERS. THE SEVERE THUNDERSTORMS THAT WERE OVER NORTH BREVARD AND EAST ORANGE COUNTIES HAVE DECREASED SOMEWHAT IN INTENSITY AND ARE NO LONGER CONSIDERED SEVERE. HOWEVER...STORMS WERE STILL RATHER STRONG FROM HOLOPAW AND ST CLOUD...TO JUST EAST OF APOPKA...TO NEAR SANFORD...EAST TO NEAR CAPE CANAVERAL. THE STRONGEST STORMS WERE OVER THE COASTAL WATERS JUST OFFSHORE CAPE CANAVERAL. THE STORMS WERE MOVING EAST AT 10 TO 15 MPH. SEVERAL STORMS HAVE HAD A RECENT PAST HISTORY OF PRODUCING...PEA... MARBLE...AND NICKEL SIZED HAIL. GUSTS OVER 45 MPH HAVE BEEN COMMON. DURING THE NEXT TWO HOURS...STRONG STORMS WILL REMAIN SCATTERED OVER EAST CENTRAL FLORIDA. SOMEk WILL BECOME RATHER STRONG...AND A FEW COULD BECOME SEVERE. STAY INFORMED OF THE LATEST WEATHER SITUATION AS FUTURE WARNINGS MAY BE ISSUED.
Special weather statement, Jul 6, 9:30 PM EDT, 10 minutes before
FLZ017-011-016-070230- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 932 PM EDT MON JUL 6 1992 ...SPECIAL MARINE WARNING IN EFFECT FOR THE INDIAN RIVER COUNTY COASTAL WATERS UNTIL 945 PM EDT... ...SEVERE THUNDERSTORM WARNING FOR INDIAN RIVER COUNTY EXPIRED AT 915 PM EDT... AT 930 PM EDT...WEATHER RADAR INDICATED STRONG THUNDERSTORMS CONTINUING OVER THE COASTAL WATERS OF INDIAN RIVER COUNTY. WIND GUSTS ABOVE 40 MPH (35 KTS) ARE LIKELY. THE STORMS WERE MOVING EAST AT 10 TO 15 MPH. ELSEWHERE...SHOWER AND THUNDERSTORM ACTIVITY WAS RAPIDLY DECREASING ACROSS THE AREA. ONLY A FEW THUNDERSTORMS REMAINED OVER PARTS OF INDIAN RIVER COUNTY. THROUGH L11 PM EDT...THUNDERSTORMS WILL SLOWLY DECREASE OVER THE INDIAN RIVER COUNTY COASTAL WATERS. INLAND ACTIVITY OVER EAST CENTRAL FLORIDA WILL HAVE DISSIPATED.
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 8:20 PM EDT | Severe Thunderstorm Warning | MLB | Indian River | 55 min |
| Jul 6, 8:51 PM EDT | Severe Thunderstorm Warning | MLB | Okeechobee | 69 min |
| Jul 7, 2:04 PM EDT | Severe Thunderstorm Warning | MLB | Palm Beach | 56 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1992Every severe thunderstorm warning in 1992
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.