Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 12, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Aug 10, 1990, 12:57 PM EDT for Miami-Dade County, Florida. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Aug 10, 1990, 12:57 PM EDT (16:57 UTC)
- Expired
- Aug 10, 1990, 2:00 PM EDT
- In force
- 63 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Miami-Dade 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
Key West, FL (KEYW), launched 12:00Z, 5.0 hours before the alert went out and 169 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
- 2527 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 753 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 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 101659 SVRMIA FLC025-101800- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 1257 PM EDT FRI AUG 10 1990 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 200 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST FLORIDA ...DADE COUNTY AND THE ADJACENT COASTAL WATERS ALONG THE SOUTHEAST FLORIDA COAST AND THE ADJACENT COASTAL WATERS A SEVERE THUNDERSTORM WAS LOCATED IN THE CUTLER RIDGE/PERRINE/ RICHMOND HEIGHTS/WEST KENDALL AREA OF DADE COUNTY AT 1255 PM EDT. THIS THUNDERSTORM IS MOVING SLOWLY NORTH AND MAY CAUSE STRONG DAMAGING WINDS ALONG WITH LARGE HAIL. MARBLE SIZE HA*IL ALONG WITH WINDS OF 40 TO 50 MPH HAVE ALREADY BEEN REPORTED WITH THIS STORM.
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, Aug 10, 12:46 PM EDT, 11 minutes before
FLZ015>023-101735- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 1225 PM EDT FRI AUG 10 1990 SCATTERED THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE RAPIDLY DEVELOPING OVER SOUTH DADE COUNTY. AT 1225 PM EDT HEAVIEST RAINFALL WAS DETECTED SOUTH OF MIAMI BETWEEN HOMESTEAD AND THE COMMUNITY OF CULTER RIDGE. THESE THUNDERSTORMS HAVE THE POTENIAL TO PRODUCE PERIODS OF VERY HEAVY RAINFALL ALONG WITH GUSTY SURFACE WINDS AND DANGEROUS LIGHTNING STRIKES. MOVEMENT WAS NORTHEAST AROUND 5 MILES AN HOUR. SHOULD THREATENING WEATHER DEVELOP... SEEK SHELTER IMMEDIATELY. ELSEWHERE... SCATTERED SHOWERS AND THUNDERSTORMS WERE DEVELOPING ACROSS THE LOWER PENINSULA SOUTH OF A LINE FROM ST LUCIE TO CHARLOTTE COUNTY. SEVERAL WERE ASSOCIATED WITH VERY HEAVY RAINFALL. OVER THE ATLANTIC... THERE WERE SCATTERED SHOWERS AND THUNDERSTORMS FROM NORTH OF GRAND BAHAMA ISLAND AND FROM SOUTH OF THE BIMINIS TO THE CAY SAL BANK. THERE WERE ISOLATED SHOWERS AND THUNDERSTORMS ACROSS THE LOWER KEYS AND THE GULF OF MEXICO SOUTHWEST OF CAPE ROMANO. HIGHEST PRECIPITATION WAS 41 THOUSAND FEET OVER THE LOWER SOUTHWEST PENINSULA.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 2:13 PM EDT | Severe Thunderstorm Warning | MFL | Broward | 47 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.