Alert archive / Florida / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 20, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Feb 15, 1998, 11:07 PM EST for Palm Beach County, Florida. It was in force for 38 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 15, 1998, 11:07 PM EST (04:07 UTC)
- Expired
- Feb 15, 1998, 11:45 PM EST
- In force
- 38 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 115 km from the middle of the area, began a volume at 04:11 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 15, 6:15 PM EST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Miami, FL (KMFL), launched 00:00Z, 4.1 hours before the alert went out and 93 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
- 449 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 266 m²/s²
- 0-3 km storm-relative helicity
- 512 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
386 WUUS1 KMIA 160408 RRA SVRMIA FLC099-160445- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 1107 PM EST SUN FEB 15 1998 THE NATIONAL WEATHER SERVICE IN MIAMI FL HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1145 PM EST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEASTERN FLORIDA ...EASTERN PALM BEACH COUNTY AT 1107 PM EST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHWEST OF LAKE WORTH OR 7 MILES SOUTHWEST OF GREENACRES CITY MOVING NORTHEAST AT 25 MPH. SOME LOCATIONS NEAR THE PATH OF THIS STORM ARE... LANTANA BY ABOUT 1110 PM EST LAKE WORTH BY ABOUT 1110 PM EST DOWNTOWN WEST PALM BEACH BY ABOUT 1120 PM EST A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. 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 |
|---|---|---|---|---|
| Feb 15, 7:04 PM EST | Tornado Warning | MFL | Collier | 61 min |
| Feb 15, 8:02 PM EST | Tornado Warning | MFL | Collier | 58 min |
| Feb 15, 8:27 PM EST | Severe Thunderstorm Warning | MFL | Glades, Hendry | 63 min |
| Feb 15, 9:19 PM EST | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 61 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.