Alert archive / Florida / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 107, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jul 13, 1997, 5:18 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 13, 1997, 5:18 PM EDT (21:18 UTC)
- Expired
- Jul 13, 1997, 6:15 PM EDT
- In force
- 57 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 21:19 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 13, 5:34 PM EDT | Hail 0.75 | Plantation, FL | reported by storm spotter near sawgrass mills mall. increased from one quarter to three quarter inch in diameter. |
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, 9.3 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
- 989 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 930 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -1 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.
812 WUUS1 KMIA 132119 RRA SVRMIA FLC011-132215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 518 PM EDT SUN JUL 13 1997 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN SOUTHEAST FLORIDA ...EASTERN BROWARD COUNTY AT 513 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTHEAST BROWARD COUNTY NEAR CORAL SPRINGS MOVING SOUTH AT 15 MPH. ANOTHER DEVELOPING SEVERE THUNDERSTORM WAS JUST WEST OF TAMARAC MOVING SOUTHEAST AT 10 MPH. 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. IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN REPORT THE SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 4:12 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 48 min |
| Jul 13, 7:04 PM EDT | Severe Thunderstorm Warning | MFL | Glades | 41 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.