Alert archive / Florida / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 64, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jun 30, 1993, 5:40 PM EDT for Volusia County, Florida. It was in force for 65 min.
The area
The counties it named.
The facts
- Issued
- Jun 30, 1993, 5:40 PM EDT (21:40 UTC)
- Expired
- Jun 30, 1993, 6:45 PM EDT
- In force
- 65 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 21:39 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, 9.7 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
- 617 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 97 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 KDAB 302143 RRA SVRDAB FLC127-302245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DAYTONA BEACH FL 540 PM EDT WED JUN 30 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 ...VOLUSIA COUNTY RADAR SHOWS A CLUSTER OF SEVERE THUNDERSTORMS OVER THE NORTHWEST PART OF VOLUSIA COUNTY REACHING FROM LAKE GEORGE TO BARBERVILLE. THESE THUNDERSTORMS WERE MOVING RAPIDLY SOUTHEAST 30 MPH. THE MAIN THREAT IS OVER THE WESTERN PART OF THE COUNTY AS THE STORM TRACKS SOUTH AROUND DELAND...DELTONA...AND ALONG THE ST JOHNS RIVER. 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 QUICKLPY 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, Jun 30, 1:14 PM EDT, 4 hours 26 minutes before
FLZ017-011-016-012-009-501-301815- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 114 PM EDT WED JUN 30 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 4 PM FOR MUCH OF CENTRAL FLORIDA... SCATTERED THUNDERSTORMS WITH HEAVY RAINFALL COVERED MUCH OF OSCEOLA COUNTY...SOUTHERN BREVARD COUNTY...AND EASTERN INDIAN RIVER COUNTY. A LARGE AREA OF RAINFALL WAS SOUTH OF A LINE FROM KISSIMMEE TO CRYSTAL RIVER ON THE GULF COAST. THE ACTIVITY WAS MOVING SOUTHEAST AT 25 MPH. RESIDENTS OF OSCEOLA...BREVARD...AND INDIAN RIVER COUNTIES SHOULD REMAIN ALERT TO APPROACHING STORMS. PERIODS OF VERY HEAVY RAINFALL AND GUSTY WINDS WILL BE POSSIBLE WITH THE STRONGEST STORMS. ANOTHER AREA OF SHOWERS AND THUNDERSTORMS WERE DEVELOPING ALONG THE GULF COAST OF LEVY AND CITRUS COUNTIES. ALTHOUGH THE POTENTIAL FOR SEVERE STORMS HAS TEMPORARILY DIMINISHED ACROSS LAKE...ORANGE...AND SEMINOLE COUNTIES...THUNDERSTORMS MAY AGAIN AFFECT THESE AREAS LATER THIAFTERNOON. SPRATT
Special weather statement, Jun 30, 1:14 PM EDT, 4 hours 26 minutes before
FLZ017-011-016-012-009-501-301815- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 114 PM EDT WED JUN 30 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 4 PM FOR MUCH OF CENTRAL FLORIDA... SCATTERED THUNDERSTORMS WITH HEAVY RAINFALL COVERED MUCH OF OSCEOLA COUNTY...SOUTHERN BREVARD COUNTY...AND EASTERN INDIAN RIVER COUNTY. A LARGE AREA OF RAINFALL WAS SOUTH OF A LINE FROM KISSIMMEE TO CRYSTAL RIVER ON THE GULF COAST. THE ACTIVITY WAS MOVING SOUTHEAST AT 25 MPH. RESIDENTS OF OSCEOLA...BREVARD...AND INDIAN RIVER COUNTIES SHOULD REMAIN ALERT TO APPROACHING STORMS. PERIODS OF VERY HEAVY RAINFALL AND GUSTY WINDS WILL BE POSSIBLE WITH THE STRONGEST STORMS. ANOTHER AREA OF SHOWERS AND THUNDERSTORMS WERE DEVELOPING ALONG THE GULF COAST OF LEVY AND CITRUS COUNTIES. ALTHOUGH THE POTENTIAL FOR SEVERE STORMS HAS TEMPORARILY DIMINISHED ACROSS LAKE...ORANGE...AND SEMINOLE COUNTIES...THUNDERSTORMS MAY AGAIN AFFECT THESE AREAS LATER THIAFTERNOON. SPRATT
Special weather statement, Jun 30, 2:06 PM EDT, 3 hours 34 minutes before
FLZ017-011-016-012-009-501-301915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 206 PM EDT WED JUN 30 1993 ...SEVERE THUNDERSTORM WATCH CANCELLED FOR LAKE...SEMINOLE...ORANGE... OSCEOLA...BREVARD...AND INDIAN RIVER COUNTIES... ...SPECIAL MARINE WARNING FOR THE COASTAL AND OFFSHORE WATERS BETWEEN COCOA BEACH AND VERO BEACH UNTIL 230 PM... AT 205 PM...WEATHER RADAR AT MELBOURNE INDICATED SCATTERED HEAVY SHOWERS AND A FEW THUNDERSTORMS FROM 5 MILES EAST OF PALM BAY AND SOUTHWARD ALONG THE COAST OF PALM BEACH COUNTY. LARGE PATCHES OF RAIN COVERED MUCH OF CENTRAL FLORIDA SOUTH OF A LINE FROM TITUSVILLE TO LAKE KISSIMMEE TO THE GULF COAST NEAR CRYSTAL RIVER. THE ACTIVITY WAS MOVING SOUTHEAST AT 25 MPH. THE THREAT OF SEVERE WEATHER HAS MOVED INTO SOUTH FLORIDA. HOWEVER...THUNDERSTORMS ARE BEGINNING TO REDEVELOP ALONG THE GULF COAST FROM CITRUS TO PASCO COUNTIES. THESE STORMS MAY MOVE INTO CENTRAL FLORIDA LATE THIS AFTERNOON WITH STRONG GUSTY WINDS...VERY HEAVY RAIN AND FREQUENT LIGHTNING. RESIDENTS OF EAST CENTRAL FLORIDA STILL NEED TO STAY ALERT TO CHANGING WEATHER AND BE READY TO SEEK A SAFE SHELTER IF A STORM APPROACHES YOUR AREA LATER THIS AFTERNOON. SPRATT
Special weather statement, Jun 30, 2:06 PM EDT, 3 hours 34 minutes before
FLZ017-011-016-012-009-501-301915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 206 PM EDT WED JUN 30 1993 ...SEVERE THUNDERSTORM WATCH CANCELLED FOR LAKE...SEMINOLE...ORANGE... OSCEOLA...BREVARD...AND INDIAN RIVER COUNTIES... ...SPECIAL MARINE WARNING FOR THE COASTAL AND OFFSHORE WATERS BETWEEN COCOA BEACH AND VERO BEACH UNTIL 230 PM... AT 205 PM...WEATHER RADAR AT MELBOURNE INDICATED SCATTERED HEAVY SHOWERS AND A FEW THUNDERSTORMS FROM 5 MILES EAST OF PALM BAY AND SOUTHWARD ALONG THE COAST OF PALM BEACH COUNTY. LARGE PATCHES OF RAIN COVERED MUCH OF CENTRAL FLORIDA SOUTH OF A LINE FROM TITUSVILLE TO LAKE KISSIMMEE TO THE GULF COAST NEAR CRYSTAL RIVER. THE ACTIVITY WAS MOVING SOUTHEAST AT 25 MPH. THE THREAT OF SEVERE WEATHER HAS MOVED INTO SOUTH FLORIDA. HOWEVER...THUNDERSTORMS ARE BEGINNING TO REDEVELOP ALONG THE GULF COAST FROM CITRUS TO PASCO COUNTIES. THESE STORMS MAY MOVE INTO CENTRAL FLORIDA LATE THIS AFTERNOON WITH STRONG GUSTY WINDS...VERY HEAVY RAIN AND FREQUENT LIGHTNING. RESIDENTS OF EAST CENTRAL FLORIDA STILL NEED TO STAY ALERT TO CHANGING WEATHER AND BE READY TO SEEK A SAFE SHELTER IF A STORM APPROACHES YOUR AREA LATER THIS AFTERNOON. SPRATT
Special weather statement, Jun 30, 5:28 PM EDT, 12 minutes before
FLZ012-302230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 528 PM EDT WED JUN 30 1993 ...THIS STATEMENT IS FOR VOLUSIA COUNTY... STRONG THUNDERSTORMS WERE MOVING INTO THE EXTREME NORTHWEST PART OF VOLUSIA COUNTY OVER LAKE GEORGE. THESE THUNDERSTORMS WERE MOVING RAPIDLY SOUTHEAST 30 MPH AND WILL LIKELY PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING... VERY HEAVY DOWNPOURS...AND POSSIBLY SOME HAIL AS THEY PASS SOUTHEAST AND SOUTH THROUGH THE COUNTY DURING THE NEXT ONE TO TWO HOURS. THE SAFEST PLACE DURING A THUNDERSTORM IS INDOORS AWAY FROM WINDOWS AND DOORS. MOTORISTS SHOULD BE ALERT FOR PONDING OF WATER ON THE ROADWAYS AND NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH. BOATERS ON LAKE GEORGE AND ALONG THE ST JOHNS RIVER SOUTH OF THE LAKE SHOULD BE ALERT FOR STRONG WINDS AND HIGH WAVES IN THE VICINITY OF THESE THUNDERSTORMS. IF THREATENING WEATHER APPROACHES...TAKE SHELTER IMMEDIATELY.
Special weather statement, Jun 30, 5:28 PM EDT, 12 minutes before
FLZ012-302230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 528 PM EDT WED JUN 30 1993 ...THIS STATEMENT IS FOR VOLUSIA COUNTY... STRONG THUNDERSTORMS WERE MOVING INTO THE EXTREME NORTHWEST PART OF VOLUSIA COUNTY OVER LAKE GEORGE. THESE THUNDERSTORMS WERE MOVING RAPIDLY SOUTHEAST 30 MPH AND WILL LIKELY PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING... VERY HEAVY DOWNPOURS...AND POSSIBLY SOME HAIL AS THEY PASS SOUTHEAST AND SOUTH THROUGH THE COUNTY DURING THE NEXT ONE TO TWO HOURS. THE SAFEST PLACE DURING A THUNDERSTORM IS INDOORS AWAY FROM WINDOWS AND DOORS. MOTORISTS SHOULD BE ALERT FOR PONDING OF WATER ON THE ROADWAYS AND NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH. BOATERS ON LAKE GEORGE AND ALONG THE ST JOHNS RIVER SOUTH OF THE LAKE SHOULD BE ALERT FOR STRONG WINDS AND HIGH WAVES IN THE VICINITY OF THESE THUNDERSTORMS. IF THREATENING WEATHER APPROACHES...TAKE SHELTER IMMEDIATELY.
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 4:20 PM EDT | Severe Thunderstorm Warning | MLB | Flagler | 40 min |
| Jun 30, 5:00 PM EDT | Severe Thunderstorm Warning | MLB | Flagler | 45 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; radar from the NEXRAD Level II archive.