Alert archive / Florida / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 13, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at May 1, 1989, 3:38 PM EDT for Volusia County, Florida. It was in force for 67 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 1, 1989, 3:38 PM EDT (19:38 UTC)
- Expired
- May 1, 1989, 4:45 PM EDT
- In force
- 67 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 1, 3:43 PM EDT | Hail 1 | Volusia, FL | |
| May 1, 3:50 PM EDT | Thunderstorm Wind 60 | Volusia, FL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 7.6 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
- 1122 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 584 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDAB 011939
SVRDAB
FLC127-012045-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
338 PM EDT MON MAY 1 1989
THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN EAST CENTRAL FLORIDA
...VOLUSIA
AT 333PM RADAR INDICATED A SEVERE THUNDERSTORM OVER THE SOUTHWEST
PORTION OF VOLUSIA COUNTY..MOVING NORTHEAST AT 35 MPH. THIS STORM
WAS LOCATED JUST SOUTH OF DELAND. PRESENT MOVEMENT WILL MOVE THE
STORM INTO THE DAYTONA BEACH/ORMOND BEACH AREA WITHIN THE NEXT
HOUR.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAR
15BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.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, May 1, 2:03 PM EDT, 1 hour 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ORLANDO FL
200 PM EDT MON MAY 01 1989
...TORNADO WATCH FOR LAKE COUNTY...
THE NATIONAL SEVERE STORMS FORECAST CENTER HAS ISSUED A TORNADO
WATCH FOR PARTS OF CENTRAL FLORIDA...INCLUDING LAKE COUNTY...FROM
200PM EDT THIS MONDAY AFTERNOON UNTIL 700PM EDT THIS EVENING.
TORNADOES...LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING
THUNDERSTORM WINDS ARE POSSIBLE.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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 POSSIBLE WARNINGS.Special weather statement, May 1, 2:45 PM EDT, 53 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
245 PM EDT MON MAY 1 1989
...A TORNADO WATCH IS IN EFFECT UNTIL 7PM FOR PARTS OF CENTRAL AND
NORTHEAST FLORIDA AND THE ADJACENT COASTAL WATERS...
...THIS WATCH INCLUDES MARION..FLAGLER AND VOLUSIA COUNTIES AS WELL
AS SEVERAL OTHER COUNTIES IN THE WATCH AREA...
...A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR MARION COUNTY UNTIL
315PM EDT...
A LINE OF STRONG THUNDERSTORMS HAS DEVELOPED DOWN THE CENTER OF THE STATE
AND IS MOVING TO THE EAST AT 20 MPH. PERSONS IN NORTHEAST AND CENTRAL
FLORIDA SHOULD REMAIN ALERT TO DETERIORATING WEATHER AS CONDITIONS ARE
FAVORABLE FOR TORNADO DEVELOPMENT AND SEVERE THUNDERSTORMS WITH STRONG
GUSTY WINDS...DANGEROUS LIGHTNING...HEAVY RAINS AND POSSIBLE HAIL IN
AND CLOSE TO THE WATCH AREA.The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 2:14 PM EDT | Severe Thunderstorm Warning | MLB | Marion | 61 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.