Alert archive / Florida / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 91, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jul 31, 1993, 5:44 PM EDT for Orange County, Florida. It was in force for 46 min.
The area
The counties it named.
The facts
- Issued
- Jul 31, 1993, 5:44 PM EDT (21:44 UTC)
- Expired
- Jul 31, 1993, 6:30 PM EDT
- In force
- 46 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Orange County, FL
The radar
The Melbourne radar (KMLB), 79 km from the middle of the area, began a volume at 21:47 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
Tampa Bay, FL (KTBW), launched 12:00Z, 9.7 hours before the alert went out and 139 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
- 3672 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 706 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 16 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 KMLB 312143 RRA SVRMLB FLC095-312230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 544 PM EDT SAT JUL 31 1993 THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL FLORIDA ...ORANGE COUNTY AT 540 PM...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM WARNING BETWEEN DOWNTOWN ORLANDO AND THE ORLANDO INTERNATIONAL AIRPORT. THE THUNDERSTORM WAS DRIFTING SLOWLY TO THE SOUTHEAST. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTjECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STRONG BUILDING. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. PAF
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 31, 4:19 PM EDT, 1 hour 25 minutes before
FLZ017-312125- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 419 PM EDT SAT JUL 31 1993 ...SPECIAL MARINE WARNING FROM CAPE CANAVERAL TO MELBOURNE BEACH EXPIRED AT 415 PM... AT 415 PM...A CLUSTER OF STRONG THUNDERSTORMS CONTINUED JUST OFFSHORE FROM CAPE CANAVERAL TO MELBOURNE BEACH. THE THUNDERSTORMS STILL MAY PRODUCE WIND GUSTS OF 20 TO 30 KNOTS FOR THE NEXT HOUR OR SO. BOATERS ON THE COASTAL WATERS IN THESE AREAS SHOULD REMAIN ALERT FOR THESE THUNDERSTORMS AS THE MOVE TO THE EAST AT 10 MPH. THESE THUNDERSTORMS WILL PRODUCE FREQUENT LIGHTNING. IF YOU ARE CAUGHT OFFSHORE TRY TO AVOID THE STORM IF POSSIBLE. IF THE STORM APPROACHES YOU STAY AWAY FROM LARGE METAL OBJECTS SUCH AS A SAILBOAT MAST...BOOM OR RADIO ANTENNA. EXCEPT IN AN EMERGENCY DO NOT USE ELECTRONIC EQUIPMENT UNTIL THE STORM HAS PASSED.
Special weather statement, Jul 31, 4:20 PM EDT, 1 hour 24 minutes before
FLZ017-312125- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 419 PM EDT SAT JUL 31 1993 ...SPECIAL MARINE WARNING FROM CAPE CANAVERAL TO MELBOURNE BEACH EXPIRED AT 415 PM... AT 415 PM...A CLUSTER OF STRONG THUNDERSTORMS CONTINUED JUST OFFSHORE FROM CAPE CANAVERAL TO MELBOURNE BEACH. THE THUNDERSTORMS STILL MAY PRODUCE WIND GUSTS OF 20 TO 30 KNOTS FOR THE NEXT HOUR OR SO. BOATERS ON THE COASTAL WATERS IN THESE AREAS SHOULD REMAIN ALERT FOR THESE THUNDERSTORMS AS THE MOVE TO THE EAST AT 10 MPH. THESE THUNDERSTORMS WILL PRODUCE FREQUENT LIGHTNING. IF YOU ARE CAUGHT OFFSHORE TRY TO AVOID THE STORM IF POSSIBLE. IF THE STORM APPROACHES YOU STAY AWAY FROM LARGE METAL OBJECTS SUCH AS A SAILBOAT MAST...BOOM OR RADIO ANTENNA. EXCEPT IN AN EMERGENCY DO NOT USE ELECTRONIC EQUIPMENT UNTIL THE STORM HAS PASSED.
Special weather statement, Jul 31, 5:04 PM EDT, 40 minutes before
FLZ011-312205- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 504 PM EDT SAT JUL 31 1993 ...STRONG THUNDERSTORMS DEVELOPING IN ORLANDO AREA... AT 500 PM...NATIONAL WEATHER SERVICE RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING IN THE ORLANDO AREA BETWEEN DOWNTOWN AND THE DISNEY WORLD AREA. OTHER STRONG THUNDERSTORMS WERE SCATTERED FROM CRISTMAS TO HOLOPAW AND CONTINUED TO LAKE KISSIMMEE. THE THUNDERSTORMS SHOWED LITTLE MOVEMENT. 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. BECAUSE OF THE SLOW MOVEMENT...LOCALLY HEAVY RAINS ARE POSSIBLE. IF DRIVING..USE EXTRA CAUTION FOR PONDING OF WATER ON ROADS AND POOR VISIBILITIES. ELSEWHERE IN EAST CENTRAL FLORIDA...A FEW THUNDERSTORMS WERE NEAR SCOTTSMOOR AND DELAND. LITTLE MOVEMENT WAS INDICATED. PAF
Special weather statement, Jul 31, 5:06 PM EDT, 38 minutes before
FLZ011-312205- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 504 PM EDT SAT JUL 31 1993 ...STRONG THUNDERSTORMS DEVELOPING IN ORLANDO AREA... AT 500 PM...NATIONAL WEATHER SERVICE RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING IN THE ORLANDO AREA BETWEEN DOWNTOWN AND THE DISNEY WORLD AREA. OTHER STRONG THUNDERSTORMS WERE SCATTERED FROM CRISTMAS TO HOLOPAW AND CONTINUED TO LAKE KISSIMMEE. THE THUNDERSTORMS SHOWED LITTLE MOVEMENT. 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. BECAUSE OF THE SLOW MOVEMENT...LOCALLY HEAVY RAINS ARE POSSIBLE. IF DRIVING..USE EXTRA CAUTION FOR PONDING OF WATER ON ROADS AND POOR VISIBILITIES. ELSEWHERE IN EAST CENTRAL FLORIDA...A FEW THUNDERSTORMS WERE NEAR SCOTTSMOOR AND DELAND. LITTLE MOVEMENT WAS INDICATED. PAF
Special weather statement, Jul 31, 5:33 PM EDT, 11 minutes before
FLZ011-312235- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 533 PM EDT SAT JUL 31 1993 ...STRONG THUNDERSTORMS CONTINUE IN THE ORLANDO AREA... AT 530 PM...NATIONAL WEATHER SERVICE RADAR SHOWED THE CLUSTER OF STRONG THUNDERSTORMS BETWEEN DOWNTOWN ORLANDO AND THE ORLANDO INTERNATIONAL AIRPORT. BETWEEN 520 AND 530 PM...THE ORLANDO INTERNATIONAL AIRPORT REPORTED WIND GUSTS OF 53 MPH AND 1/4 INCH HAIL WITH THESE STORMS. THE STORMS WERE DRIFTING SLOWLY TO THE SOUTHEAST. IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING HEAVY RAIN. SOME STREETS MAY FLOOD QUICKLY. PAF &
Special weather statement, Jul 31, 5:35 PM EDT, 9 minutes before
FLZ011-312235- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MELBOURNE FL 533 PM EDT SAT JUL 31 1993 ...STRONG THUNDERSTORMS CONTINUE IN THE ORLANDO AREA... AT 530 PM...NATIONAL WEATHER SERVICE RADAR SHOWED THE CLUSTER OF STRONG THUNDERSTORMS BETWEEN DOWNTOWN ORLANDO AND THE ORLANDO INTERNATIONAL AIRPORT. BETWEEN 520 AND 530 PM...THE ORLANDO INTERNATIONAL AIRPORT REPORTED WIND GUSTS OF 53 MPH AND 1/4 INCH HAIL WITH THESE STORMS. THE STORMSL WERE DRIFTING SLOWLY TO THE SOUTHEAST. IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING HEAVY RAIN. SOME STREETS MAY FLOOD QUICKLY. PAF &
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 2:32 PM EDT | Severe Thunderstorm Warning | MLB | Indian River | 44 min |
| Jul 31, 3:30 PM EDT | Severe Thunderstorm Warning | MLB | Brevard | 60 min |
| Jul 31, 7:28 PM EDT | Severe Thunderstorm Warning | MLB | Lake | 32 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.