Alert archive / Florida / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 90, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jul 6, 1997, 5:30 PM EDT for Broward County, Miami-Dade County, Florida. It was in force for 60 min. 3 reports 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 6, 1997, 5:30 PM EDT (21:30 UTC)
- Expired
- Jul 6, 1997, 6:30 PM EDT
- In force
- 60 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 21:30 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 |
|---|---|---|---|
| Jul 6, 6:00 PM EDT | Thunderstorm Wind 55 | Sunrise Golf Vlg, FL | three eight inch diameter trees down...numerous tree limbs and branches down. |
| Jul 6, 6:00 PM EDT | Thunderstorm Wind 55 | Davie, FL | power lines down...numerous tree branches down. |
| Jul 6, 6:00 PM EDT | Thunderstorm Wind 55 | Pembroke Pines, 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.
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 9.5 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
- 3465 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 624 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 110 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 062131 RRA SVRMIA FLC011-025-062230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 530 PM EDT SUN JUL 6 1997 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEAST FLORIDA ...WESTERN BROWARD COUNTY...WESTERN DADE COUNTY AND THE ADJACENT COASTAL WATERS NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES THUNDERSTORMS WHICH LIKELY WILL BECOME SEVERE OVER PORTIONS OF NORTH AND WEST BROWARD...AND ACROSS WESTERN DADE. AREAS TO BE AFFECTED INCLUDE FAR WESTERN PARTS OF THE COUNTY IN THE EVERGLADES...AND ALSO WESTERN SUBURBS OF THE METRO AREA ALONG HIGHWAY 27 IN BROWARD COUNTY... AND ALONG KROME AVENUE IN DADE COUNTY. ANOTHER SEPERATE STORM WILL CAUSE LOCALLY GUSTY WINDS IN NORTHERN BROWARD FROM CORAL SPRINGS OVER TO NEAR POMPANO BEACH. DAMAGING WIND IN EXCESS OF 55 MPH...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.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 4:25 PM EDT | Severe Thunderstorm Warning | MFL | Palm Beach | 65 min |
| Jul 6, 5:55 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 65 min |
| Jul 6, 6:15 PM EDT | Tornado Warning | MFL | Broward | 45 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.