Alert archive / Florida / Tornado Watches in 1998
Tornado Watch 19
The Storm Prediction Center issued this tornado watch at Jan 23, 1998, 9:15 AM EST for 18 counties in Florida. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 23, 1998, 9:15 AM EST (14:15 UTC)
- Expired
- Jan 23, 1998, 3:00 PM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Brevard County, FL, Broward County, FL, Charlotte County, FL, Collier County, FL, DeSoto County, FL, Glades County, FL, Hardee County, FL, Hendry County, FL, Highlands County, FL, Indian River County, FL, Lee County, FL, Manatee County, FL, Martin County, FL, Okeechobee County, FL, Osceola County, FL, Palm Beach County, FL, Saint Lucie County, FL, Sarasota County, FL
The radar
The Melbourne radar (KMLB), 122 km from the middle of the area, began a volume at 14:15 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.
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 23, 9:23 AM EST | Tornado Warning | TBW | DeSoto, Hardee | 47 min |
| Jan 23, 9:38 AM EST | Tornado Warning | TBW | Highlands | 47 min |
| Jan 23, 10:28 AM EST | Severe Thunderstorm Warning | MLB | Indian River | 47 min |
| Jan 23, 10:33 AM EST | Tornado Warning | TBW | Hardee, Highlands | 47 min |
| Jan 23, 11:20 AM EST | Severe Thunderstorm Warning | MLB | Brevard | 60 min |
| Jan 23, 12:54 PM EST | Severe Thunderstorm Warning | MLB | Brevard | 21 min |
| Jan 23, 1:44 PM EST | Flash Flood Warning | MLB | Brevard | 4 hr |
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 2.3 hours before the alert went out and 164 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
- 1021 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 621 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
560 WWUS9 KMKC 231400 SEL9 MKC WW 231400 FLZ000-232000- BULLETIN - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 19 STORM PREDICTION CENTER NORMAN OK 900 AM EST FRI JAN 23 1998 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL AND SOUTHERN FLORIDA AND ADJACENT COASTAL WATERS EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 915 AM UNTIL 300 PM EST. TORNADOES...HAIL TO 1 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EITHER SIDE OF A LINE FROM 10 MILES WEST SOUTHWEST OF FORT MEYERS FLORIDA TO 35 MILES EAST OF VERO 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...SHEAR PROFILES SUFFICIENT TO SUPPORT CONTINUED SMALL SUPERCELLS AND TORNADOS AS AIRMASS IS MODERATELY UNSTABLE. STORMS SHOULD CONTINUE DEVELOPING EWD ACROSS PENINSULA. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 23030. ...HALES 272,0823 283,0802 264,0791 253,0812
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; radar from the NEXRAD Level II archive.