Alert archive / Florida / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 61, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jun 20, 1997, 12:11 AM EDT for Broward County, Miami-Dade County, Florida. It was in force for 64 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 20, 1997, 12:11 AM EDT (04:11 UTC)
- Expired
- Jun 20, 1997, 1:15 AM EDT
- In force
- 64 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
Counties Broward County, FL, Miami-Dade County, FL
The radar
The Miami radar (KAMX), 31 km from the middle of the area, began a volume at 04:11 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 20, 12:20 AM EDT | Thunderstorm Wind 56 | Dania, FL | palm trees and power lines down. small hail also reported. |
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.
The nearest sounding before it
Miami, FL (KMFL), launched 00:00Z, 4.2 hours before the alert went out and 20 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
- 2092 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1121 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 11 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 200413 RRA SVRMIA FLC011-025-200515- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 1211 AM EDT FRI JUN 20 1997 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 115 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATION...S... IN SOUTHEAST FLORIDA ...SOUTHEASTERN BROWARD COUNTY...EASTERN DADE COUNTY AND THE ADJACENT COASTAL WATERS AT 1213 AM...MIAMI DOPPLER RADAR AND SPOTTER REPORTS FROM SOUTHEAST BROWARD COUNTY INDICATED A LINE OF SEVERE THUNDERSTORMS MOVING SOUTH AT 25 MPH WITH WIND GUSTS OF 50 TO 60 MPH LIKELY. SMALL HAIL IS ALSO POSSIBLE WITH THESE THUNDERSTORMS. PERSONS IN SOUTHEAST BROWARD AND EASTERN DADE COUNTY SHOULD TAKE COVER. THESE THUNDERSTORMS WILL ENTER DADE COUNTY ABOUT 1220 AM AND BE FROM DOWNTOWN THROUGH THE AIRPORT TO SWEETWATER BY 1240 AM. DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...VERY HEAVY RAIN... AND DEADBLY 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. &
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 9:37 PM EDT | Severe Thunderstorm Warning | MFL | Palm Beach | 88 min |
| Jun 20, 5:04 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 56 min |
| Jun 20, 5:47 PM EDT | Severe Thunderstorm Warning | MFL | Monroe | 58 min |
| Jun 20, 6:51 PM EDT | Severe Thunderstorm Warning | MFL | Monroe | 59 min |
| Jun 20, 7:53 PM EDT | Severe Thunderstorm Warning | MFL | Glades | 62 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.