Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 7, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jul 5, 1990, 4:03 PM EDT for Broward County, Florida. It was in force for 57 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 5, 1990, 4:03 PM EDT (20:03 UTC)
- Expired
- Jul 5, 1990, 5:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Broward 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 5, 4:20 PM EDT | Hail 0.75 | Broward, 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
Key West, FL (KEYW), launched 12:00Z, 8.1 hours before the alert went out and 218 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
- 1458 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 1213 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 5 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 KMIA 052004 RRA SVRMIA FLC011-052100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 403 PM EDT THU JUL 5 1990 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST FLORIDA ...EASTERN BROWARD COUNTY AND THE ADJACENT COASTAL WATERS ALONG THE SOUTHEAST FLORIDA COAST AND THE ADJACENT COASTAL WATERS RADAR INDICATES VERY RAPID DEVELOPMENT OF THUNDERSTORMS OVER EASTERN BROWARD COUNTY. ONE THUNDERSTORM OVER THE PLANTATION/DAVIE AREA HAS THE POTENTIAL FOR PRODUCING SEVERE WEATHER...STRONG DAMAGING WINDS. THIS THUNDERSTORM IS MOVING VERY SLOWLY TOWARDS THE SOUTHEAST. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. SEEK SHELTER IN A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES. A MOBILE HOME IS NOT A SAFE REFUGE FROM A SEVERE THUNDERSTORM...MOVE TO A MORE SUBSTANTIAL BUILDING. IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN ASK A LAW ENFORCEMENT AGENCY TO RELAY YOUR SEVERE WEATHER REPORT TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.
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 5, 3:47 PM EDT, 16 minutes before
FL015>023-052045- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 345 PM EDT THU JUL 5 1990 AT 325 PM MIAMI RADAR INDICATED THAT THUNDERSTORMS WITH VERY HEAVY RAIN WERE INCREAING OVER SOUTH FLORIDA FROM NEAR FORT PIERCE SOUTH TO FORT LAUDERDALE AND WEST TO SOUTHERN LEE AND WESTERN CHARLOTTE COUNTIES. RESIDENTS OF WESTERN BROWARD COUNTY SHOULD BE ALERT FOR POSSIBLE DEVELOPMENT OF VERY STRONG THUNDERSTORMS. SOME OF THESE THUNDERSTORMS MAY BE ACCOMPANIED BY VERY HEAVY RAINFALL...FREQUENT LIGHTNING STRIKES...BRIEF STRONG GUSTY WINDS AND POSSIBLE SMALL HAIL AS THEY MOVE TOWARDS THE SOUTH AT 15 MILES AN HOUR. ELSEWHERE...WIDELY SCATTERED SHOWERS AND A FEW THUNDERSTORMS EXTENDED FROM OFFSHORE THE UPPER KEYS TO THE NORTHERN AND WESTERN BAHAMAS.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 4:23 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 67 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.