Alert archive / Florida / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 83, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jul 11, 1993, 5:37 PM EDT for Volusia County, Florida. It was in force for 68 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1993, 5:37 PM EDT (21:37 UTC)
- Expired
- Jul 11, 1993, 6:45 PM EDT
- In force
- 68 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Volusia County, FL
The radar
The Melbourne radar (KMLB), 116 km from the middle of the area, began a volume at 21:38 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Jacksonville, FL (KAYS), launched 12:00Z, 9.6 hours before the alert went out and 168 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
- 943 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 1153 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS1 KDAB 112139 RRA SVRDAB FLC127-112245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DAYTONA BEACH FL 537 PM EDT SUN JUL 11 1993 THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL FLORIDA ...WESTERN VOLUSIA COUNTY AND THE ADJACENT COASTAL WATERS. NATIONAL WEATHER SERVICE RADAR INDICATED SEVERE THUNDERSTORMS OVER WEST VOLUSIA COUNTY FROM JUST NORTHEAST OF BARBERVILLE TO NEAR DELAND. THESE SEVERE THUNDERSTORMS WERE MOVING VERY LITTLE BUT DEVELOPING SOMEWHAT TO THE SOUTH. 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.
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, Jul 11, 4:54 PM EDT, 43 minutes before
FLZ011-112155- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 454 PM EDT SUN JUL 11 1993 ...STRONG THUNDERSTORMS CONTINUE TO DEVELOP OVER EAST CENTRAL FLORIDA... AT 450 PM...NATIONAL WEATHER SERVICE RADAR SHOWED STRONG THUNDERSTORMS CONTINUING TO DEVELOP FROM LAKE MARY TO LAKE MONROE AND AROUND LADY LAKE. THE THUNDERSTORMS SHOWED A SLOW DRIFT TO THE SOUTH. DURING THE NEXT HOUR STRONG THUNDERSTORMS ARE EXPECTED TO CONTINUE DEVELOPING OVER SEMINOLE..ORANGE AND LAKE COUNTIES...ESPECIALLY BETWEEN LEESBURG..LAKE MARY..AND ORLANDO. RESIDENTS SHOULD BE ALERT FOR THESE THUNDERSTORMS AS THEY CROSS THE AREA. THEY CAN PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING...HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SMALL HAIL. STAY TUNED TO NOAA WEATHER RADIO...OR YOUR LOCAL RADIO OR TELEVISION STATIONS FOR THE LATEST UPDATES CONCERNING THIS DEVELOPING WEATHER SITUATION. ELSEWHERE IN EAST CENTRAL FLORIDA...SCATTERED STRONG THUNDERSTORMS WERE BETWEEN OCALA AND FLAGLER BEACH...NEAR DELEON SPRINGS...AND BETWEEN ORLANDO AND HOLOPAW. PAF
Special weather statement, Jul 11, 4:54 PM EDT, 43 minutes before
FLZ011-112155- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 454 PM EDT SUN JUL 11 1993 ...STRONG THUNDERSTORMS CONTINUE TO DEVELOP OVER EAST CENTRAL FLORIDA... AT 450 PM...NATIONAL WEATHER SERVICE RADAR SHOWED STRONG THUNDERSTORMS CONTINUING TO DEVELOP FROM LAKE MARY TO LAKE MONROE AND AROUND LADY LAKE. THE THUNDERSTORMS SHOWED A SLOW DRIFT TO THE SOUTH. DURING THE NEXT HOUR STRONG THUNDERSTORMS ARE EXPECTED TO CONTINUE DEVELOPING OVER SEMINOLE..ORANGE AND LAKE COUNTIES...ESPECIALLY BETWEEN LEESBURG..LAKE MARY..AND ORLANDO. RESIDENTS SHOULD BE ALERT FOR THESE THUNDERSTORMS AS THEY CROSS THE AREA. THEY CAN PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING...HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SMALL HAIL. STAY TUNED TO NOAA WEATHER RADIO...OR YOUR LOCAL RADIO OR TELEVISION STATIONS FOR THE LATEST UPDATES CONCERNING THIS DEVELOPING WEATHER SITUATION. ELSEWHERE IN EAST CENTRAL FLORIDA...SCATTERED STRONG THUNDERSTORMS WERE BETWEEN OCALA AND FLAGLER BEACH...NEAR DELEON SPRINGS...AND BETWEEN ORLANDO AND HOLOPAW. PAF
Special weather statement, Jul 11, 5:13 PM EDT, 24 minutes before
FLZ012-112215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 513 PM EDT SUN JUL 11 1993 ...THIS STATEMENT IS FOR FLAGLER AND VOLUSIA COUNTIES... STRONG THUNDERSTORMS WERE DEVELOPING OVER THE INLAND SECTIONS OF FLAGLER AND VOLUSIA COUNTIES...MAINLY WEST OF I-95. THESE STORMS WILL LIKELY PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING...VERY HEAVY RAINFALL...AND POSSIBLY SOME HAIL DURING THE LATE AFTERNOON AND INTO THE EARLY EVENING HOURS. AT 510 PM EDT...NATIONAL WEATHER SERVICE RADAR SHOWED THE STRONGEST THUNDERSTORMS TO BE JUST NORTH AND NORTHWEST OF DELAND AND FARTHER NORTH...JUST TO THE SOUTHWEST OF BUNNELL. NOT MUCH MOVEMENT WAS EVIDENT...BUT THE SEABREEZE WAS PUSHING THE STORMS SLOWLY WEST. THE HEAVY DOWNPOURS CAN CAUSE PONDING OF WATER ON THE ROADWAYS... AND MOTORISTS SHOULD BE ALERT AND NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH. REMEMBER...THE SAFEST PLACE DURING A THUNDERSTORM IS INDOORS AWAY FROM WINDOWS AND DOORS.
Special weather statement, Jul 11, 5:14 PM EDT, 23 minutes before
FLZ012-112215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 513 PM EDT SUN JUL 11 1993 ...THIS STATEMENT IS FOR FLAGLER AND VOLUSIA COUNTIES... STRONG THUNDERSTORMS WERE DEVELOPING OVER THE INLAND SECTIONS OF FLAGLER AND VOLUSIA COUNTIES...MAINLY WEST OF I-95. THESE STORMS WILL LIKELY PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING...VERY HEAVY RAINFALL...AND POSSIBLY SOME HAIL DURING THE LATE AFTERNOON AND INTO THE EARLY EVENING HOURS. AT 510 PM EDT...NATIONAL WEATHER SERVICE RADAR SHOWED THE STRONGEST THUNDERSTORMS TO BE JUST NORTH AND NORTHWEST OF DELAND AND FARTHER NORTH...JUST TO THE SOUTHWEST OF BUNNELL. NOT MUCH MOVEMENT WAS EVIDENT...BUT THE SEABREEZE WAS PUSHING THE STORMS SLOWLY WEST. THE HEAVY DOWNPOURS CAN CAUSE PONDING OF WATER ON THE ROADWAYS... AND MOTORISTS SHOULD BE ALERT AND NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH. REMEMBER...THE SAFEST PLACE DURING A THUNDERSTORM IS INDOORS AWAY FROM WINDOWS AND DOORS.
Special weather statement, Jul 11, 5:29 PM EDT, 8 minutes before
FLZ011-016-112230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 529 PM EDT SUN JUL 11 1993 ...STRONG THUNDERSTORMS DEVELOPING IN LAKE..ORANGE..AND OSCEOLA COUNTIES... AT 525 PM...NATIONAL WEATHER SERVICE RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING NEAR ST CLOUD AND LAKE KISSIMMEE ...AND FROM JUST EAST OF ASTOR PARK TO 5 MILES EAST OF EUSTIS AND HOWEY IN THE HILLS. THE THUNDERSTORMS WERE DRIFTING SLOWLY TO THE SOUTHWEST. DURING THE NEXT HOUR STRONG THUNDERSTORMS WILL EXTEND BETWEEN KISSIMMEE AND ST CLOUD TO AROUND LAKE KISSIMMEE...AND FROM UMATILLA TO BETWEEN MASCOTTE AND ORLANDO. RESIDENTS SHOULD BE ALERT FOR THESE THUNDERSTORMS AS THEY CROSS THE AREA. THEY CAN PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING...HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SMALL HAIL. USE EXTRA CAUTION IF DRIVING FOR PONDING OF WATER ON ROADS AND POOR VISIBILITIES. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. PAF
Special weather statement, Jul 11, 5:30 PM EDT, 7 minutes before
FLZ011-016-112230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 529 PM EDT SUN JUL 11 1993 ...STRONG THUNDERSTORMS DEVELOPING IN LAKE..ORANGE..AND OSCEOLA COUNTIES... AT 525 PM...NATIONAL WEATHER SERVICE RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING NEAR ST CLOUD AND LAKE KISSIMMEE ...AND FROM JUST EAST OF ASTOR PARK TO 5 MILES EAST OF EUSTIS AND HOWEY IN THE HILLS. THE THUNDERSTORMS WERE DRIFTING SLOWLY TO THE SOUTHWEST. DURING THE NEXT HOUR STRONG THUNDERSTORMS WILL EXTEND BETWEEN KISSIMMEE AND ST CLOUD TO AROUND LAKE KISSIMMEE...AND FROM UMATILLA TO BETWEEN MASCOTTE AND ORLANDO. RESIDENTS SHOULD BE ALERT FOR THESE THUNDERSTORMS AS THEY CROSS THE AREA. THEY CAN PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING...HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SMALL HAIL. USE EXTRA CAUTION IF DRIVING FOR PONDING OF WATER ON ROADS AND POOR VISIBILITIES. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. PAF
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; radar from the NEXRAD Level II archive.