Alert archive / Florida / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 4, NWS Melbourne, FL

March 1, 1989Brevard County, Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Mar 1, 1989, 8:15 PM EST for Brevard County, Volusia County, Florida. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Mar 1, 1989, 8:15 PM EST (01:15 UTC)
Expired
Mar 1, 1989, 9:00 PM EST
In force
45 min
Issued by
NWS Melbourne, FL
Area
Whole counties

Counties Brevard County, FL, 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

Tampa Bay, FL (KTBW), launched 00:00Z, 1.3 hours before the alert went out and 181 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.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 00:00Z on 1989-03-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 337 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 1989-03-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
337 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
941 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KDAB 020113
SVRDAB
FLC009-127-020200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
815 PM EST WED MAR 1 1989
 
THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL  900 PM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN EAST CENTRAL FLORIDA
          ...NORTHERN BREVARD...SOUTHERN VOLUSIA
 
AND ADJOINING COASTAL WATERS.
 
 
AT 805 PM RADAR SHOWED A LARGE INTENSE THUNDERSTORM OVER THE
VOLUSIA/BREVARD COUNTY LINE MOVING EAST AT 30 MPH.
THIS THUNDERSTORM IS LIKELY TO PRODUCE LARGE HAIL...STRONG DAMAGING
WINDS...AND FREQUENT LIGHTNING IN ADDITION TO VERY HEAVY RAINFALL.
 
 
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, Mar 1, 4:38 PM EST, 3 hours 37 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE OFFICE DAYTONA BEACH FL
440 PM EST WED MAR 1 1989

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM EST FOR ALL
OF CENTRAL FLORIDA INCLUDING MARION...FLAGLER...VOLUSIA...BREVARD...
AND INDIAN RIVER COUNTIES.

SCATTERED THUNDERSTORMS AND A LARGE RAIN AREA WERE OVER NORTH AND
CENTRAL FLORIDA FROM THE GEORGIA BORDER SOUTH TO TAMPA AND ORLANDO.
THE STRONGEST THUNDERSTORMS WERE BETWEEN OCALA AND SANFORD.

THE AREA EXTENDED OVER THE ATLANTIC FOR 70 MILES FROM FLAGLER BEACH
TO BRUNSWICK GEORGIA AND OVER THE GULF FOR 80 MILES FROM CROSS CITY
TO ST PETERSBURG.

THE AREA WAS MOVING EAST 15 MPH.
Special weather statement, Mar 1, 5:35 PM EST, 2 hours 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE OFFICE DAYTONA BEACH FL
535 PM EST WED MAR 1 1989

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM EST FOR ALL
OF CENTRAL FLORIDA INCLUDING MARION...FLAGLER...VOLUSIA...BREVARD...
AND INDIAN RIVER COUNTIES.

SCATTERED THUNDERSTORMS AND A LARGE RAIN AREA WERE OVER NORTH AND
CENTRAL FLORIDA FROM THE GEORGIA BORDER SOUTH TO TAMPA AND MELBOURNE.
THE HEAVIEST RAINFALL WAS OVER THE COASTAL WATERS EAST OF JACKSONVILLE
AND NEAR ASTOR PARK.

THE AREA EXTENDED OVER THE ATLANTIC FOR 90 MILES FROM THE GEORGIA BORDER
TO TITUSVILLE AND OVER THE GULF FOR 60 MILES FROM CEDAR KEY TO
ST PETERSBURG.

MOVEMENT WAS NORTHEAST 35 MPH.
Special weather statement, Mar 1, 5:52 PM EST, 2 hours 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ORLANDO FL
550 PM EST WED MAR 1 1989

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM EST
FOR CENTRAL FLORIDA INCLUDING LAKE...ORANGE...SEMINOLE AND OSCEOLA
COUNTIES.

NATIONAL WEATHER SERVICE RADAR IS SHOWING STRONG THUNDERSTORMS
WITH VERY HEAVY PRECIPITATION OVER LAKE COUNTY NEAR LEESBURG AND
ALSO JUST MOVING INTO WEST CENTRAL OSCEOLA COUNTY. MOVEMENT WAS
EAST AT 20 MILES AND HOUR.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE
FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN
THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS
AND LISTEN FOR LATER STATEMENTS AND POSSI(BLE WARNINGS.
Special weather statement, Mar 1, 6:35 PM EST, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE OFFICE DAYTONA BEACH FL
635 PM EST WED MAR 1 1989

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM EST FOR ALL
OF CENTRAL FLORIDA INCLUDING MARION...FLAGLER...VOLUSIA...BREVARD...
AND INDIAN RIVER COUNTIES.

SCATTERED THUNDERSTORMS AND A LARGE RAIN AREA WERE OVER NORTH AND
CENTRAL FLORIDA FROM THE GEORGIA BORDER SOUTH TO TAMPA AND MELBOURNE.
THE HEAVIEST RAINFALL WAS JUST SOUTHWEST OF MELBOURNE.

THE AREA EXTENDED OVER THE ATLANTIC FOR 80 MILES FROM THE GEORGIA BORDER
TO CAPE CANAVERAL AND OVER THE GULF FOR 40 MILES FROM CEDAR KEY TO
ST PETERSBURG.

MOVEMENT WAS EAST 30 MPH.
Special weather statement, Mar 1, 7:01 PM EST, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ORLANDO FL
700 PM EST WED MAR 1 1989

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM EST
FOR CENTRAL FLORIDA INCLUDING LAKE...ORANGE...SEMINOLE AND OSCEOLA
COUNTIES.

NATIONAL WEATHER SERVICE RADAR IS SHOWING STRONG THUNDERSTORMS
WITH VERY HEAVY PRECIPITATION OVER ORANGE COUNTY JUST NORTH OF
ORLANDO TO APOPKA AND MAITLAND AND FROM EAST OF KISSIMMEE SOUTH
TO ST CLOUD IN OSCEOLA COUNTY. MOVEMENT WAS EAST NEAR 20 MPH.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE
FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN
THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS
AND LIST9EN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Mar 1, 7:38 PM EST, 37 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE OFFICE DAYTONA BEACH FL
735 PM EST WED MAR 1 1989

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM EST FOR ALL
OF CENTRAL FLORIDA INCLUDING MARION...FLAGLER...VOLUSIA...BREVARD...
AND INDIAN RIVER COUNTIES.

SMALL CLUSTERS OF STRONG THUNDERSTORMS WITH HEAVY RAINFALL WERE NEAR
THE EAST COAST BETWEEN DAYTONA BEACH AND SANFORD AND NEAR MELBOURNE
AND WILL BE MOVING OVER THE ADJACENT ATLANTIC COASTAL WATERS WITHIN
THE NEXT HOUR.

OTHER THUNDERSTORMS WERE SCATTERED OVER THE ATLANTIC COASTAL WATERS
FROM MELBOURNE TO FLAGLER BEACH AND 50 TO 80 MILES OFFSHORE ON NORTH
TO JACKSONVILLE.

A LARGE RAIN AREA EXTENDED OVER MUCHQ OF THE REST OF NORTH AND CENTRAL
FLORIDA FROM THE GEORGIA BORDER SOUTH TO TAMPA AND MELBOURNE.

MOVEMENT WAS EAST 25 MPH.

The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 1, 7:36 PM ESTSevere Thunderstorm WarningMLBOrange54 min

Nearby

Severe Thunderstorm Warnings in Florida, 1989Every severe thunderstorm warning in 1989

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.