Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 38, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jul 25, 1990, 4:57 PM EDT for Orange County, Florida. It was in force for 48 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
- Jul 25, 1990, 4:57 PM EDT (20:57 UTC)
- Expired
- Jul 25, 1990, 5:45 PM EDT
- In force
- 48 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Orange 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 |
|---|---|---|---|
| Jul 25, 5:00 PM EDT | Thunderstorm Wind 60 | Orange, 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, 9.0 hours before the alert went out and 81 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
- 1083 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 1081 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 6 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 KMLB 252059 SVRMLB FLC095-252145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 457 PM EDT WED JUL 25 1990 THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL FLORIDA ...CENTRAL ORANGE COUNTY AT 455 PM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM OVER THE METROPOLITAN ORLANDO AREA AND MOVING TO THE SOUTH AT 10 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR O/F YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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, Jul 25, 3:09 PM EDT, 1 hour 48 minutes before
FLZ009 012-251910- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 310 PM EDT TUE JUL 24 1990 AT 300 PM EDT THE NATIONAL WEATHER SERVICE RADAR AT DAYTONA BEACH SHOWED STRONG THUNDERSTORMS OVER WESTERN VOLUSIA COUNTY AND EASTERN MARION COUNTY. A RESIDENT NEAR PIERSON REPORTED STRONG AND GUSTY WINDS. THESE THUNDERSTORMS WILL PRODUCE STRONG SURFACE WINDS..FREQUENT DANGEROUS CLOUD TO GROUND LIGHTNING AND VERY HEAVY RAINFALL CAUSING FLOODING IN AREAS THAT USUALLY FLOOD IN HEAVY RAIN FOR THE NEXT HOUR OR TWO. RESIDENTS OF WEST VOLUSIA COUNTY AND EASTERN MARION COUNTY. SHOULD BE ALERT FOR ADVERSE WEATHER CONDITIONS AND TAKE SHELTER IF CONDITIONS BECOME THREATENING.
Special weather statement, Jul 25, 3:11 PM EDT, 1 hour 46 minutes before
FLZ009-012-251910- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 310 PM EDT TUE JUL 24 1990 AT 300 PM EDT THE NATIONAL WEATHER SERVICE RADAR AT DAYTONA BEACH SHOWED STRONG THUNDERSTORMS OVER WESTERN VOLUSIA COUNTY AND EASTERN MARION COUNTY. A RESIDENT NEAR PIERSON REPORTED STRONG AND GUSTY WINDS. THESE THUNDERSTORMS WILL PRODUCE STRONG SURFACE WINDS..FREQUENT DANGEROUS CLOUD TO GROUND LIGHTNING AND VERY HEAVY RAINFALL CAUSING FLOODING IN AREAS THAT USUALLY FLOOD IN HEAVY RAIN FOR THE NEXT HOUR OR TWO. RESIDENTS OF WEST VOLUSIA COUNTY AND EASTERN MARION COUNTY. SHOULD BE ALERT FOR ADVERSE WEATHER CONDITIONS AND TAKE SHELTER IF CONDITIONS BECOME THREATENING.
Special weather statement, Jul 25, 4:18 PM EDT, 39 minutes before
FLZ011-252115- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 416 PM EDT WED JUL 25 1990 ...STRONG THUNDERSTORM MOVING INTO NORTHEAST LAKE AND SEMINOLE COUNTIES... AT 415 PM NATIONAL WEATHER SERVICE RADAR SHOWED A STRONG THUNDERSTORM WITH VERY HEAVY RAINFALL AND CAPABLE OF PRODUCING STRONG GUSTY WINDS...FREQUENT DANGEROUS LIGHTNING...AND POSSIBLE HAIL BETWEEN EUSTIS AND SANFORD. THE THUNDERSTORM WAS MOVING TO THE SOUTH AT 10 MPH AND WILL BE MOVING OVER SEMINOLE COUNTY NEAR SANFORD WITHIN THE HOUR. PERSONS IN NORTHEAST LAKE AND SEMINOLE COUNTIES SHOULD BE ALERT FOR THIS THUNDERSTORM DURING THE NEXT HOUR AND ESPECIALLY CAUTIOUS OF DANGEROUS LIG^HTNING AND REDUCED VISIBILITES WHEN DRIVING.
Special weather statement, Jul 25, 4:41 PM EDT, 16 minutes before
FLZ011-252145- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 440 PM EDT WED JUL 25 1990 ...STRONG THUNDERSTORMS OVER SEMINOLE AND ORANGE COUNTIES... AT 440 PM NATIONAL WEATHER SERVICE RADAR SHOWED A CLUSTER OF STRONG THUNDERSTORMS WITH VERY HEAVY RAINFALL AND CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH...FREQUENT DANGEROUS LIGHTNING... AND POSSIBLE HAIL COVERING MOST OF SEMINOLE COUNTY AND MOVING INTO ORANGE COUNTY. THE THUNDERSTORMS WERE MOVING TO THE SOUTH AT 15 MPH AND WILL BE INTO THE METROPOLITAN ORLANDO AREA WITHIN THE NEXT HALF HOUR. PERSONS IN ORANGE AND SEMINOLE COUNTIES SHOULD BE ALERT FOR THESE THUNDERSTORMS FOR THE NEXT HOUR OR SO A ND BE ESPECIALLY ALERT TO DEADLY LIGHTNING AND POOR DRIVING CONDITIONS DURING RUSH HOUR.
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 3:45 PM EDT | Severe Thunderstorm Warning | MLB | Volusia | 45 min |
| Jul 25, 5:28 PM EDT | Severe Thunderstorm Warning | MLB | Osceola | 62 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.