Alert archive / Florida / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 12, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Feb 6, 1998, 10:27 AM EST for Monroe County, Florida. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 6, 1998, 10:27 AM EST (15:27 UTC)
- Expired
- Feb 6, 1998, 11:25 AM EST
- In force
- 58 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Monroe County, FL
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 3.5 hours before the alert went out and 69 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1063 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
085 WUUS1 KMIA 061528 RRA SVRMIA FLC087-061625- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 1027 AM EST FRI FEB 6 1998 THE NATIONAL WEATHER SERVICE IN MIAMI FL HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1125 AM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHERN FLORIDA ...MONROE MIDDLE KEYS ...MONROE LOWER KEYS AT 1022 AM EST... DOPPLER RADAR INDICATED AN AREA OF STRONG THUNDERSTORMS FROM SOUTH OF THE DRY TORTUGAS ACROSS THE FLORIDA STRAITS TO SOUTHEAST OF MARATHON. THE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT 25 MPH BUT HAD SHOWN A TENDENCY TO DEVELOP NORTHWARD OVER THE PAST HOUR. ANY ADDITIONAL NORTHWARD DEVELOPMENT WOULD PUT THE STRONGEST STORMS OVER THE LOWER AND MIDDLE KEYS. 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. IF YOU ARE CAUGHT OUTSIDE...SEEK REFUGE FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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, Feb 6, 6:00 AM EST, 4 hours 27 minutes before
AMZ610-630-631-650>654-656-670>676-FLZ063-066>078-062300- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 600 AM EST FRI FEB 6 1998 ...DEVELOPING LOW PRESSURE OVER THE SOUTHEASTERN GULF OF MEXICO... DEVELOPING LOW PRESSURE OVER THE SOUTHEAST GULF OF MEXICO IS EXPECTED TO MOVE THROUGH THE FLORIDA STRAITS LATE TODAY AND TONIGHT. THIS IS A FAST MOVING SYSTEM AND SHOULD ALREADY BE EAST OF THE AREA SATURDAY. WEATHER CHANGES SHOULD OCCUR RAPIDLY TODAY ACROSS SOUTH FLORIDA AS CLOUDS AND PRECIPITATION SPREAD EASTWARD ACROSS THE AREA BY LATE THIS MORNING. THUNDERSTORMS ARE EXPECTED ACROSS SOUTH FLORIDA AND THE KEYS BEGINNING LATE THIS MORNING AND CONTINUING TONIGHT. THE POTENTIAL FOR SEVERE WEATHER IS DIMINISHED FROM THE PREVIOUS STORM HOWEVER THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS...WITH THE MAIN PROBLEMS BEING A POSSIBILITY OF LOCALLY STRONG WIND GUSTS AND LARGE HAIL WITH STRONGER THUNDERSTORMS. RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE OVER SOUTH FLORIDA AND THE KEYS THROUGH EARLY TONIGHT. MOIST AIR FROM THE EAST AND SOUTH WILL BE VERY LIMITED AND SHOULD RESTRICT THE STRONGEST THUNDERSTOMS TO MAINLY THE SOUTHERN PARTS OF SOUTH FLORIDA AND INCLUDING THE KEYS. FOR MARINERS WINDS WILL BE SHIFTING TO NORTHEAST AND INCREASING TO 15 TO 20 KNOTS LATE TODAY WITH THE POSSIBILITY OF GALE FORCE WINDS DEVELOPING EARLY TONIGHT. A FEW LOCATIONS MAINLY IN THE KEYS MAY RECEIVE MINOR FLOODING AT TIMES OF HIGH TIDE SATURDAY. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR FURTHER UPDATES ON THIS NEXT WEATHER SYSTEM.
Special weather statement, Feb 6, 6:00 AM EST, 4 hours 27 minutes before
AMZ610-630-631-650>654-656-670>676-FLZ063-066>078-062300- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 600 AM EST FRI FEB 6 1998 ...DEVELOPING LOW PRESSURE OVER THE SOUTHEASTERN GULF OF MEXICO... DEVELOPING LOW PRESSURE OVER THE SOUTHEAST GULF OF MEXICO IS EXPECTED TO MOVE THROUGH THE FLORIDA STRAITS LATE TODAY AND TONIGHT. THIS IS A FAST MOVING SYSTEM AND SHOULD ALREADY BE EAST OF THE AREA SATURDAY. WEATHER CHANGES SHOULD OCCUR RAPIDLY TODAY ACROSS SOUTH FLORIDA AS CLOUDS AND PRECIPITATION SPREAD EASTWARD ACROSS THE AREA BY LATE THIS MORNING. THUNDERSTORMS ARE EXPECTED ACROSS SOUTH FLORIDA AND THE KEYS BEGINNING LATE THIS MORNING AND CONTINUING TONIGHT. THE POTENTIAL FOR SEVERE WEATHER IS DIMINISHED FROM THE PREVIOUS STORM HOWEVER THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS...WITH THE MAIN PROBLEMS BEING A POSSIBILITY OF LOCALLY STRONG WIND GUSTS AND LARGE HAIL WITH STRONGER THUNDERSTORMS. RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE OVER SOUTH FLORIDA AND THE KEYS THROUGH EARLY TONIGHT. MOIST AIR FROM THE EAST AND SOUTH WILL BE VERY LIMITED AND SHOULD RESTRICT THE STRONGEST THUNDERSTOMS TO MAINLY THE SOUTHERN PARTS OF SOUTH FLORIDA AND INCLUDING THE KEYS. FOR MARINERS WINDS WILL BE SHIFTING TO NORTHEAST AND INCREASING TO 15 TO 20 KNOTS LATE TODAY WITH THE POSSIBILITY OF GALE FORCE WINDS DEVELOPING EARLY TONIGHT. A FEW LOCATIONS MAINLY IN THE KEYS MAY RECEIVE MINOR FLOODING AT TIMES OF HIGH TIDE SATURDAY. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR FURTHER UPDATES ON THIS NEXT WEATHER SYSTEM.
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; the sounding from the Mesonet's radiosonde archive.