Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 44, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Aug 9, 1990, 3:15 PM EDT for Volusia County, Florida. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Aug 9, 1990, 3:15 PM EDT (19:15 UTC)
- Expired
- Aug 9, 1990, 4:15 PM EDT
- In force
- 60 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Volusia County, FL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 7.3 hours before the alert went out and 91 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
- 1958 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 45 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 091920 SVRDAB FLC127-092015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE DAYTONA BEACH FL 315 PM EDT THU AUG 9 1990 THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 415 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL FLORIDA ...VOLUSIA COUNTY AND FOR MARINE INTERESTS ON THE COASTAL WATERS AROUND... ...VOLUSIA COUNTY A SEVERE THUNDERSTORM WAS DETECTED BY RADAR 10 MILES WEST OF DAYTONA BEACH AND WAS MOVING EAST AT 15 MPH. 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. AS THE THUNDERSTORMS MOVE OUT OVER THE COASTAL WATERS...BOATERS IN THE THREATENED AREA CAN EXPECT STRONG WINDS...ROUGH SEAS AND LIGHTNING. BOATERS SHOULD TAKE NECESSARY ACTION TO AVOID THE DANGEROUS THUNDERSTORMS.
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, Aug 9, 2:11 PM EDT, 1 hour 4 minutes before
FLZ011-091915- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 209 PM EDT THU AUG 9 1990 ...A CLUSTER OF STRONG THUNDERSTORMS WERE IN SOUTHWEST ORANGE COUNTY... AT 205 PM EDT NATIONAL WEATHER SERVICE RADARS INDICATED A CLUSTER OF STRONG THUNDERSTORMS IN SOUTHWEST ORANGE COUNTY NEAR DISNEY WORLD. THESE STORMS WERE MOVING EAST NORTHEAST AT 15 MPH. THIS MOVEMENT WILL PUT THE STORMS IN THE ORLANDO AREA BY 215 TO 230 PM. RESIDENTS OF ORLANDO AND THE SURROUNDING AREAS SHOULD PREPARE FOR PERIODS OF HEAVY RAIN AND GUSTY WINDS TO 35 MPH. LIGHTNING DATA SHOWS FREQUENT CLOUD TO GROUND LIGHTNING WITH THIS CLUSTER OF THUNDERSTORMS. ELSEWHERE IN EAST CENTRAL FLORIDA...STRONG THUNDERSTORMS WERE FROM NEAR SANFORD TO JUST SOUTH OF DAYTONA...IN THE VICINITY OF LAKE GEORGE...AND AROUND FLAGLER BEACH. MOVEMENT WAS ALSO EAST NORTHEAST AT 10 MPH. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD GO INSIDE OUT OF THE WEATHER. DO NOT USE TELEPHONES UNLESS IT IS AN EMERGENCY WHILE THUNDER IS IN THE AREA.
Special weather statement, Aug 9, 2:12 PM EDT, 1 hour 3 minutes before
FLZ012-092000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 210 PM EDT THU AUG 9 1990 ...THIS STATEMENT IS FOR PERSONS IN FLAGLER AND VOLUSIA COUNTIES... THUNDERSTORMS CAPABLE OF PRODUCING STRONG WINDS...DANGEROUS LIGHTNING... VERY HEAVY RAIN AND HAIL HAVE DEVELOPED OVER THE EAST PART OF THE FLORIDA PENINSULA AROUND DAYTONA BEACH AND FARTHER NORTH JUST WEST OF FLAGLER COUNTY. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MPH AND WILL BE MOVING OVER THE COASTAL WATERS OF FLAGLER AND VOLUSIA COUNTIES WITHIN THE HOUR AND BOATERS SHOULD BE ALERT FOR STRONG WINDS AND ROUGH SEAS. THE STRONG THUNDERSTORM ACTIVITY WILL CONTINUE INTO THE LATE AFTERNOON.
Special weather statement, Aug 9, 3:02 PM EDT, 13 minutes before
FLZ017-011-016-012-092000- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 259 PM EDT THU AUG 9 1990 ...NUMEROUS STRONG THUNDERSTORMS WERE OVER EAST CENTRAL FLORIDA AND PART OF THE ADJACENT COASTAL WATERS... AT 255 PM EDT NATIONAL WEATHER SERVICE RADARS INDICATED NUMEROUS STRONG THUNDERSTORMS FROM NEAR TITUSVILLE...TO DAYTONA... TO NEAR FLAGLER BEACH...AND THE IMMEDIATE ADJACENT COASTAL WATERS. STRONG STORMS WERE FROM JUST WEST OF HOLOPAW TO JUST EAST OF ORLANDO..TO NEAR SANFORD. STRONG THUNDERSTORMS WERE ALSO FROM BETWEEN OCALA AND LEESBURG...TO LAKE GEORGE...TO DAYTONA. MOVEMENT WAS EAST NORTHEAST AT 15 MPH. MANY OF THESE STORMS WERE PRODUCING HEAVY RAIN IN A SHORT PERIOD OF TIME AND MAY CAUSE TEMPORARY FLOODING OF SOME STREETS AND POOR DRAINAGE AREAS. FREQUENT LIGHTNING HAS BEEN OBSERVED WITH SOME OF THE STORMS. THE CLUSTER OF STORMS THAT MOVED THROUGH THE ORLANDO AREA DURING THE PAST HOUR CAUSED POWER OUTAGES AND A FEW LIGHTNING INDUCED BRUSH FIRES. DURING THE NEXT HOUR...THUNDERSTORMS ARE EXPECTED TO BECOME QUITE STRONG FROM COCOA AND TITUSVILLE...TO DAYTONA. RESIDENTS NEAR THESE AREAS SHOULD BE ALERT TO THREATENING WEATHER AND STAY INFORMED. SINCE THE STORMS WILL BE MOVING OFFSHORE...MARINE INTERESTS FROM COCOA BEACH TO FLAGLER BEACH SHOULD BE READY TO HEAD TO SAFE HARBOR AT THE FIRST SIGNS OF THREATENING WEATHER AS A SPECIAL MARINE WARNING MAY BE ISSUED FOR THESE COASTAL WATERS DURING THE NEXT HOUR OR SO.
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:10 PM EDT | Severe Thunderstorm Warning | MLB | Brevard | 65 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1990Every severe thunderstorm warning in 1990
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.