Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 8, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jun 4, 1990, 6:34 PM EDT for Saint Lucie County, Florida. It was in force for 56 min.
The area
The counties it named.
The facts
- Issued
- Jun 4, 1990, 6:34 PM EDT (22:34 UTC)
- Expired
- Jun 4, 1990, 7:30 PM EDT
- In force
- 56 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Saint Lucie 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, 10.6 hours before the alert went out and 121 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
- 928 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 873 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 4, 4:36 PM EDT, 1 hour 58 minutes before
FLZ012-042200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 435 PM EDT MON JUN 4 1990 THIS IS A SPECIAL WEATHER STATEMENT FOR FLAGLER AND VOLUSIA COUNTIES AND THEIR ADJACENT COASTAL WATERS... AT 435 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED VERY STRONG THUNDERSTORMS CAPABLE OF PRODUCING STRONG GUSTY WINDS...FREQUENT DANGEROUS LIGHTNING STRIKES ...POSSIBLY SMALL HAIL...AND VERY HEAVY RAINFALL AMOUNTS...EXTENDING FROM THE COASTAL WATERS OF FLAGLER COUNTY INTO THE THE NORTHWEST CORNER OF VOLUSIA COUNTY NEAR LAKE GEORGE. THESE THUNDERSTORM WILL MOVE EAST AT AROUND 10 MPH. PERSONS IN THE AFFECTED AREA SHOULD BE PREPARED FOR THE APPROACH OF THESE THUNDERSTORMS AND AND BE PREPARED TO SEEK SAFE SHELTER IMMEDIATELY. BOATERS OVER THE ATLANTIC AND INTRACOASTAL WATERWAYS ALONG FLAGLER AND VOLUSIA COUNTIES EAST COAST...SHOULD EXPECT LOCALLY ROUGH SEAS AND STRONG GUSTY WINDS TO ACCOMPANY THESE THUNDERSTORMS FOR THE NEXT HOUR OR SO.
Special weather statement, Jun 4, 4:47 PM EDT, 1 hour 47 minutes before
FLZ017-011-016-012-042245- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 445 PM EDT MON JUN 4 1990 AT 445 PM STRONG THUNDERSTORMS WERE ALONG THE COAST FROM NORTH OF DAYTONA INTO FLAGLER COUNTY. THESE THUNDERSTORMS WILL LIKELY PRODUCE STRONG GUSTY WINDS FREQUENT DANGEROUS LIGHTNING...HEAVY DOWNPOURS AND POSSIBLE SMALL HAIL. OTHER THUNDERSTORMS WERE ACTIVE ALONG THE COAST FROM CAPE CANAVERAL TO MELBOURNE TO NEAR VERO BEACH. THUNDERSTORMS WERE ALSO INLAND FROM NEAR KISSIMMEE WEST AND SOUTH INTO POLK COUNTY. ALL THUNDERSTORMS WERE MOVING EAST AT 15 MPH. DURING THE NEXT 2 HOURS THUNDERSTORMS WILL CONTINUE TO INCREASE OVER MUCH OF CENTRAL FLORIDA ESPECIALLY ALONG THE EAST COAST AND WILL LIKELY DRIFT OVER THE ADJACENT COASTAL WATERS.
Special weather statement, Jun 4, 5:37 PM EDT, 57 minutes before
FLZ017-011-016-042330- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 534 PM EDT MON JUN 4 1990 AT 530 PM STRONG THUNDERSTORMS CONTINUED MAINLY FROM THE COAST SOUTH OF NEW SMYRNA BEACH INLAND TO ALTAMONTE SPRINGS. OTHER STRONG THUNDERSTORMS WERE JUST SOUTH OF MELBOURNE INLAND ACROSS SOUTHERN OSCEOLA COUNTY. THESE THUNDERSTORMS ARE LIKELY TO PRODUCE FREQUENT DANGEROUS LIGHTINING... STRONG GUSTY WINDS...VERY [HEAVY RAIN AND POSSILBLE SMALL HAIL. DURING THE NEXT COUPLE OF HOURS THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER PARTS OF CENTRAL FLORIDA PARTICULARLY OVER THE ORLANDO METROPOLITAN AREA.
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 4:37 PM EDT | Tornado Warning | MLB | Palm Beach | 53 min |
| Jun 4, 5:30 PM EDT | Severe Thunderstorm Warning | MLB | Palm Beach | 60 min |
| Jun 4, 6:12 PM EDT | Severe Thunderstorm Warning | MLB | Indian River | 33 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.