Alert archive / Florida / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 32, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Mar 19, 1998, 11:53 PM EST for Broward County, Florida. It was in force for 62 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
- Mar 19, 1998, 11:53 PM EST (04:53 UTC)
- Expired
- Mar 20, 1998, 12:55 AM EST
- In force
- 62 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 04:55 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 |
|---|---|---|---|
| Mar 20, 12:30 AM EST | Thunderstorm Wind 55 | Coral Spgs, FL | Widespread tree damage and downed powerlines across northern Broward County. small planes flipped at Pompano Airport. 110 foot tall support poles for netting at golf facility bent in half. |
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, 4.9 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
- 345 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 1008 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
828 WUUS1 KMIA 200457 RRA SVRMIA AMZ651-671-FLC011-200555- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 1153 PM EST THU MAR 19 1998 THE NATIONAL WEATHER SERVICE IN MIAMI FL HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1255 AM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHEASTERN FLORIDA ...BROWARD COUNTY INCLUDING ADJACENT COASTAL WATERS AT 1152 PM...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS OVER THE EVERGLADES OF WESTERN BROWARD COUNTY. THE LINE OF STORMS IS MOVING SOUTHEAST AT 20 TO 25 MPH. THE THUNDERSTORMS WILL MOVE INTO EASTERN BROWARD COUNTY AFTER MIDNIGHT AND AFFECT MUCH OF THE AREA FROM DEERFIELD BEACH TO CORAL SPRINGS SOUTH TO PEMBROKE PINES TO HOLLYWOOD. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. 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 |
|---|---|---|---|---|
| Mar 19, 10:39 PM EST | Severe Thunderstorm Warning | MFL | Collier | 61 min |
| Mar 20, 12:25 AM EST | Severe Thunderstorm Warning | MFL | Miami-Dade | 60 min |
| Mar 20, 12:49 AM EST | Severe Thunderstorm Warning | MFL | Miami-Dade | 61 min |
| Mar 20, 6:07 PM EST | Severe Thunderstorm Warning | MFL | Monroe | 78 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1998Every severe thunderstorm warning in 1998
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.