Alert archive / Florida / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 9, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jun 7, 1988, 4:22 PM EDT for Seminole County, Florida. It was in force for 68 min. 1 report 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
- Jun 7, 1988, 4:22 PM EDT (20:22 UTC)
- Expired
- Jun 7, 1988, 5:30 PM EDT
- In force
- 68 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Seminole 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 |
|---|---|---|---|
| Jun 7, 4:50 PM EDT | Hail 0.88 | Seminole, 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, 8.4 hours before the alert went out and 77 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
- 1007 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 920 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMCO 072024
SVRMCO
FLC117-072130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ORLANDO FL
422 PM EDT TUE JUN 7 1988
THE NATIONAL WEATHER SERVICE IN ORLANDO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN CENTRAL FLORIDA
...SEMINOLE
THUNDERSTORMS MOVING EAST FROM LAKE CONTY ARE NOW ENTERING WEST
SEMINOLE COUNTY.
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.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 7, 3:40 PM EDT, 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ORLANDO FL 340 PM EDT MON JUN 6 1988 ...STRONG THUNDERSTORMS HAVE DEVELOPED OVER LAKE COUNTY... AT 335 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED VERY STRONG THUNDERSTORMS BETWEEN UMATILLA AND MASCOTTE. THEY WERE MOVING EAST AT 15 MPH AND SHOULD ENTER NORTHERN ORANGE COUNTY WITHIN THE NEXT 15 MINUTES. THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN..LOCALLY STRONG GUSTY WINDS..FREQUENT LIGHT~NING AND POSSIBLY SMALL HAIL.
Special weather statement, Jun 7, 3:42 PM EDT, 40 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE ORLANDO FL 340 PM EDT TUE JUN 7 1988 ...STRONG THUNDERSTORMS HAVE DEVELOPED OVER LAKE COUNTY... AT 335 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED VERY STRONG THUNDERSTORMS BETWEEN UMATILLA AND MASCOTTE. THEY WERE MOVING EAST AT 15 MPH AND SHOULD ENTER NORTHERN ORANGE COUNTY WITHIN THE NEXT 15 MINUTES. THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN..LOCALLY STRONG GUSTY WINDS..FREQUENT LIGHTNING AND POSSIBLY SMALL HAIL.
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 4:11 PM EDT | Severe Thunderstorm Warning | MLB | Orange | 64 min |
| Jun 7, 4:56 PM EDT | Severe Thunderstorm Warning | MLB | Brevard, Volusia | 64 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1988Every severe thunderstorm warning in 1988
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.