Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 17, NWS Melbourne, FL

February 22, 1998Osceola County, Florida

NWS Melbourne, FL issued this tornado warning at Feb 22, 1998, 3:06 PM EST for Osceola County, Florida. It was in force for 64 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 22, 1998, 3:06 PM EST (20:06 UTC)
Expired
Feb 22, 1998, 4:10 PM EST
In force
64 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 49 km from the middle of the area, began a volume at 20:06 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.

IssuedProductOfficeLasted
Feb 22, 2:15 PM ESTTornado WatchSPC7 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.1 hours before the alert went out and 78 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.

Skew-T log-pSkew-T log-p diagram, Cape Canaveral, FL at 12:00Z on 1998-02-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 38 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 1998-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 231 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
38 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
715 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
231 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

393 
WFUS01 KMLB 222007 RRA
TORMLB
FLC097-222110-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
306 PM EST SUN FEB 22 1998

THE NATIONAL WEATHER SERVICE IN MELBOURNE FL HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 410 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL FLORIDA

   ...SOUTHERN OSCEOLA COUNTY
 
AT 305 PM...DOPPLER RADAR SHOWED A POSSIBLE TORNADO ALONG THE
OSCEOLA-OKEECHOBEE COUNTY LINE...HEADED FOR YEEHAW JUNCTION. THE
STORM WILL AFFECT RESIDENTIAL AREAS ALONG STATE ROUTE 60 AND U.S.
441 IN SOUTH OSECOLA COUNTY BETWEEN YEEHAW JUNCTION AND KENANSVILLE.

The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 22, 2:17 PM ESTSevere Thunderstorm WarningMLBOsceola33 min
Feb 22, 2:27 PM ESTSevere Thunderstorm WarningMLBOrange63 min
Feb 22, 2:45 PM ESTSevere Thunderstorm WarningMLBBrevard65 min
Feb 22, 2:59 PM ESTSevere Thunderstorm WarningMLBOrange, Seminole66 min
Feb 22, 3:00 PM ESTTornado WarningMLBOrange, Seminole65 min
Feb 22, 3:34 PM ESTSevere Thunderstorm WarningMLBBrevard, Volusia66 min

Nearby

Tornado Warnings in Florida, 1998Every tornado warning in 1998Tornadoes 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.