Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 31, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jul 12, 1990, 7:55 PM EDT for Flagler County, Volusia County, Florida. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Jul 12, 1990, 7:55 PM EDT (23:55 UTC)
- Expired
- Jul 12, 1990, 8:45 PM EDT
- In force
- 50 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
Counties Flagler 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
Cape Canaveral, FL (KXMR), launched 12:00Z, 11.9 hours before the alert went out and 113 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
- 3176 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 20 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 KDAB 122355 SVRDAB FLC127-035-130045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DAYTONA BEACH FL 755 PM EDT THU JUL 12 1990 THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 845 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL FLORIDA ...VOLUSIA COUNTY AND THE ADJACENT COASTAL WATERS. IN NORTHEAST FLORIDA ...FLAGLER COUNTY AND THE ADJACENT COASTAL WATERS. AT 755 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED SEVERE THUNDERSTORMS OVER NORTH VOLUSIA COUNTY MOVING NORTH 15 TO 20 MPH INTO FLAGLER COUNTY. THIS IS A DANGEROUS STORM. IF YOU ARE ITN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
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 12, 4:29 PM EDT, 3 hours 26 minutes before
FLZ009-012-122300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 430 PM EDT THU JUL 12 1990 THIS STATEMENT IS FOR MARION...VOLUSIA...AND FLAGLER COUNTIES. AT 430 PM EDT THE NATIONAL WEATHER SERVICE RADAR AT DAYTONA BEACH SHOWED SCATTERED TO RATHER NUMEROUS STRONG THUNDERSTORMS OVER THE WEST HALF OF AND SOUTHERN PART OF VOLUSIA COUNTY AND ACROSS MUCH OF MARION COUNTY. THESE THUNDERSTORMS WERE MOVING NORTH 10 MPH AND WILL BE ALSO AFFECTING THE WEST HALF OF FLAGLER COUNTY A LITTLE LATER. THE GREATEST DANGER WITH THESE THUNDERSTORMS WILL BE VERY HEAVY RAIN AND LIGHTNING STRIKES...RESIDENTS ARE ADVISED TO SEEK SAFE SHELTER AND FOLLOW LIGHTNING SAFETY RULES. SOME BRIEFE STRONG AND GUSTY WIND MAY ALSO BE PRODUCED BY THESE STORMS AS THEY CONTINUE INTO THE EVENING HOURS.
Special weather statement, Jul 12, 5:18 PM EDT, 2 hours 37 minutes before
FLZ017-011-016-122215- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 516 PM EDT THU JUL 12 1990 ...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 600 PM FOR NORTHWESTERN OSCEOLA COUNTY... ...SEVERE THUNDERSTORM WARNING EXPIRED AT 515 PM FOR NORTHEASTERN LAKE COUNTY... STRONG THUNDERSTORMS CONTINUED BETWEEN LEESBURG AND LAKE KISSIMMEE AND FROM WEST OF MELBOURNE TO LAKE OKEECHOBEE. OTHERS WERE AROUND DAYTONA BEACH. ANY OF THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...POSSIBLE HAIL...AND FREQUENT LIGHTNING. THE THUNDERSTORMS WERE MOVING NORTH AT 10 TO 15 MPH.
Special weather statement, Jul 12, 6:21 PM EDT, 1 hour 34 minutes before
FLZ009-130045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 620 PM EDT THU JUL 12 1990 THIS STATEMENT IS FOR MARION COUNTY. AT 620 PM EDT THE NATIONAL WEATHER SERVICE RADAR AT DAYTONA BEACH SHOWED SCATTERED TO RATHER NUMEROUS STRONG THUNDERSTORMS EAST AND SOUTH OF OCALA. THESE THUNDERSTORMS WERE MOVING NORTH 15 MPH. NUMEROUS INTENSE THUNDERSTORMS WERE ALSO APPROACHING THE SOUTHEAST BORDER AREA OF MARION COUNTY MOVING NORTH FROM LAKE COUNTY. RESIDENTS OF MARION COUNTY...ESPECIALLY THE EASTERN HALF...SHOULD BE ALERT FOR VERY STRONG THUNDERSTORMS PRODUCING VERY HEAVY RAIN...FREQUENT AND VERY DANGEROUS LIGHTNING STRIKES AS WELL AS STRONG AND GUSTY WIND FOR THE NEXT 2 TO 3 HOURS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS THAT MAY BE ISSUED ON THESE STRONG STORMS.
Special weather statement, Jul 12, 7:00 PM EDT, 55 minutes before
FLZ017-011-016-130000- SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE NATIONAL WEATHER SERVICE MELBOURNE FL 659 PM EDT THU JUL 12 1990 ...SEVERE THUNDERSTORM WARNING FOR OSCEOLA AND INDIAN RIVER COUNTY HAS EXPIRED... ...SEVERE THUNDERSTORM WARNING FOR LAKE AND ORANGE COUNTY IS CANCELLED... STRONG THUNDERSTORMS CONTINUE OVER EAST CENTRAL FLORIDA ESPECIALLY OVER LAKE...NORTHERN ORANGE...AND SEMINOLE COUNTIES. THESE THUNDERSTORMS WILL LIKELY PRODUCE STRONG GUSTY WINDS...POSSIBLY SMALL HAIL...FREQUENT LIGHTNING STRIKES...AND VERY HEAVY RAIN. A LOT OF RAIN HAS FALLEN OVER LAKE COUNTY AND PEOPLE AND MOTORISTS ARE LIKELY TO ENCOUNTER PONDING OF WATER IN LOW LYING AREAS. THE THUNDE RSTORMS WERE MOVING NORTH AT 15 MPH. THE THUNDERSTORMS AND RAIN WILL CONTINUE OVER THE NEXT FEW HOURS.
Special weather statement, Jul 12, 7:34 PM EDT, 21 minutes before
FLZ012-130045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 735 PM EDT THU JUL 12 1990 THIS STATEMENT IS FOR VOLUSIA COUNTY. AT 730 PM EDT THE NATIONAL WEATHER SERVICE RADAR AT DAYTONA BEACH SHOWED STRONG THUNDERSTORMS IN WEST VOLUSIA COUNTY NEAR AND NORTH OF DELAND. THESE THUNDERSTORMS WERE MOVING NORTH 15 MPH. RESIDENTS OF THE WEST HALF OF VOLUSIA COUNTY...ESPECIALLY FROM DELAND TO BARBERVILLE...SHOULD BE ALERT FOR ST>RONG THUNDERSTORMS PRODUCING VERY HEAVY RAIN DANGEROUS LIGHTNING STRIKES AS WELL AS STRONG AND GUSTY WIND FOR THE NEXT HOUR.
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 4:42 PM EDT | Severe Thunderstorm Warning | MLB | Volusia | 63 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.