Alert archive / Florida / Tornado Watches in 1998
Tornado Watch 882
The Storm Prediction Center issued this tornado watch at Nov 4, 1998, 12:30 PM EST for 15 counties in Florida. It was in force for 12 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 4, 1998, 12:30 PM EST (17:30 UTC)
- Expired
- Nov 5, 1998, 12:00 AM EST
- In force
- 12 hr
- Issued by
- the Storm Prediction Center
Counties Broward County, FL, Charlotte County, FL, Collier County, FL, DeSoto County, FL, Glades County, FL, Hendry County, FL, Highlands County, FL, Indian River County, FL, Lee County, FL, Martin County, FL, Miami-Dade County, FL, Monroe County, FL, Okeechobee County, FL, Palm Beach County, FL, Saint Lucie County, FL
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 4, 3:51 PM EST | Tornado Warning | MFL | Palm Beach | 59 min |
| Nov 4, 4:39 PM EST | Tornado Warning | MFL | Monroe | 46 min |
| Nov 4, 5:24 PM EST | Tornado Warning | MFL | Monroe | 46 min |
| Nov 4, 6:08 PM EST | Tornado Warning | MFL | Monroe | 32 min |
| Nov 4, 6:41 PM EST | Tornado Warning | MFL | Monroe | 34 min |
| Nov 4, 6:53 PM EST | Tornado Warning | MFL | Miami-Dade | 47 min |
| Nov 4, 9:31 PM EST | Severe Thunderstorm Warning | MFL | Collier | 44 min |
| Nov 4, 10:16 PM EST | Severe Thunderstorm Warning | MFL | Collier | 44 min |
| Nov 4, 10:58 PM EST | Tornado Warning | MFL | Collier | 32 min |
| Nov 4, 11:43 PM EST | Tornado Warning | MFL | Broward | 32 min |
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 5.5 hours before the alert went out and 129 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
- 715 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 738 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
641 WWUS9 KMKC 041654 SEL2 MKC WW 041654 FLZ000-050500- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 882 STORM PREDICTION CENTER NORMAN OK 1154 AM EST WED NOV 4 1998 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHERN AND CENTRAL FLORIDA AND ADJACENT COASTAL WATERS EFFECTIVE THIS WEDNESDAY AFTERNOON AND NIGHT...FROM 1230 PM UNTIL MIDNIGHT EST. TORNADOES...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 95 STATUTE MILES EITHER SIDE OF A LINE FROM 65 MILES SOUTH SOUTHWEST OF FORT MEYERS FLORIDA TO 15 MILES EAST OF WEST PALM BEACH FLORIDA. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DISCUSSION...THREAT FOR SUPERCELLS AND TORNADOES EXPECTED TO INCREASE THIS AFTERNOON THROUGH TONIGHT AS CIRCULATION OF MITCH APPROACHES REGION FROM THE SW. GREATEST POTENTIAL FOR DEVELOPMENT SHOULD FOCUS IN VICINITY OF WSW/ENE-ORIENTED WARM FRONT NOW OVER THE FAR SRN PART OF THE PENINSULA. THIS FEATURE SHOULD MOVE SLOWLY N THROUGH TONIGHT....WHILE UPPER LEVEL DIVERGENCE INCREASES AHEAD OF MITCH. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 19035. ...CORFIDI 265,0825 275,0802 252,0791 242,0813
Nearby
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.