Alert archive / Florida / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 128, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Aug 8, 1997, 3:36 PM EDT for Broward County, Florida. It was in force for 69 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
- Aug 8, 1997, 3:36 PM EDT (19:36 UTC)
- Expired
- Aug 8, 1997, 4:45 PM EDT
- In force
- 69 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Broward County, FL
The radar
The Miami radar (KAMX), 60 km from the middle of the area, began a volume at 19:39 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 |
|---|---|---|---|
| Aug 8, 3:55 PM EDT | Hail 0.75 | Plantation, FL | peters rd/university drive...street flooding 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 12:00Z, 7.6 hours before the alert went out and 40 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
- 2428 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 712 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 16 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 081937 RRA SVRMIA FLC011-082045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 336 PM EDT FRI AUG 8 1997 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN SOUTHEAST FLORIDA ...EASTERN BROWARD COUNTY AND THE ADJACENT COASTAL WATERS NATIONAL WEATHER SERVICE RADAR INDICATES THUNDERSTORMS WHICH WILL LIKELY CAUSE SEVERE WEATHER OVER METROPOLITAN BROWARD COUNTY. AREAS AROUND LAUDERHILL...PLANTATION...SUNRISE... DAVIE...AND ADJACENT NEIGHBORHOODS SHOULD BE ALERT. 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.
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 8, 9:43 AM EDT, 5 hours 53 minutes before
FLZ063-066>078-502>504-082200- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 945 AM EDT FRI AUG 8 1997 THUNDERSTORMS WILL AGAIN BECOME NUMEROUS ACROSS SOUTH FLORIDA DURING THE AFTERNOON. THE SOUTHWEST FLOW AND THE SEABREEZES FROM BOTH COASTS WILL FOCUS THE THUNDERSTORMS OVER THE EVERGALDES THROUGH MID AFTERNOON... AND THEN OVER THE METROPOLITAN AREAS OF PALM BEACH... BROWARD... AND DADE COUNTIES DURING THE LATE AFTERNOON. SOME OF THESE STORMS COULD BE SEVERE WITH STRONG WINDS PARTICULARY DURING THE LATE AFTERNOON ALONG THE SOUTHEAST COAST. THEY COULD CREATE SOME FLOODING PROBLEMS...AND FREQUENT CLOUD TO GROUND LIGHTNING. IN ADDITION CONDITIONS WILL CONTINUE TO BE FAVORABLE FOR WATERSPOUT DEVELOPMENT ALONG BOTH THE EAST AND WEST COASTS AS WELL AS FLORIDA BAY AND AROUND THE KEYS.
Special weather statement, Aug 8, 9:45 AM EDT, 5 hours 51 minutes before
FLZ063-066>078-502>504-082200- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 945 AM EDT FRI AUG 8 1997 THUNDERSTORMS WILL AGAIN BECOME NUMEROUS ACROSS SOUTH FLORIDA DURING THE AFTERNOON. THE SOUTHWEST FLOW AND THE SEABREEZES FROM BOTH COASTS WILL FOCUS THE THUNDERSTORMS OVER THE EVERGALDES THROUGH MID AFTERNOON... AND THEN OVER THE METROPOLITAN AREAS OF PALM BEACH... BROWARD... AND DADE COUNTIES DURING THE LATE AFTERNOON. SOME OF THESE STORMS COULD BE SEVERE WITH STRONG WINDS PARTICULARY DURING THE LATE AFTERNOON ALONG THE SOUTHEAST COAST. THEY COULD CREATE SOME FLOODING PROBLEMS...AND FREQUENT CLOUD TO GROUND LIGHTNING. IN ADDITION CONDITIONS WILL CONTINUE TO BE FAVORABLE FOR WATERSPOUT DEVELOPMENT ALONG BOTH THE EAST AND WEST COASTS AS WELL AS FLORIDA BAY AND AROUND THE KEYS.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 4:15 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade | 60 min |
| Aug 8, 4:50 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 55 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.