Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 27, NWS Melbourne, FL

February 23, 1998Orange County, Osceola County, Florida

NWS Melbourne, FL issued this tornado warning at Feb 23, 1998, 1:19 AM EST for Orange County, Osceola County, Florida. It was in force for 61 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 23, 1998, 1:19 AM EST (06:19 UTC)
Expired
Feb 23, 1998, 2:20 AM EST
In force
61 min
Issued by
NWS Melbourne, FL
Area
Whole counties

Counties Orange County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 60 km from the middle of the area, began a volume at 06:20 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, 9:00 PM ESTTornado WatchSPC6 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 6.3 hours before the alert went out and 132 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, Tampa Bay, FL at 00:00Z on 1998-02-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 906 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, Tampa Bay, FL at 00:00Z on 1998-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 239 square meters per square second.1939587897117Sfc1 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
906 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1127 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
239 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
1.4
Supercell composite
14.9

Open this sounding in Storm Lab

The text

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

509 
WFUS01 KMLB 230620 RRA
TORMLB
FLC095-097-230720-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
119 AM EST MON FEB 23 1998

THE NATIONAL WEATHER SERVICE IN MELBOURNE FL HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 220 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL FLORIDA

   ...ORANGE COUNTY
   ...OSCEOLA COUNTY
 
AT 115 AM...RADAR SHOWED SEVERE A TORNADIC LINE OF SEVERE
THUNDERSTORMS FROM BITHLO TO NARCOOSEE AND WEST LAKE TOHO.
THESE STORMS WILL ACROSS EASTERN ORANGE AND OSCEOLA COUNTIES F
AND LIKELY PRODUCE TORNADO TOUCHDOWNS FROM CHRISTMAS TO
NARCOOSEE...AND KISSIMMEE/ST CLOUD.

TORNADOES HAVE ALREADY CLAIMED A LIFE IN VOLUSIA COUNTY
TAKE SHELTER NOW
 
IF YOU ARE IN THE PATH OF A TORNADO...ABANDON CARS AND MOBILE
HOMES FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
THE SAFEST PLACE IS AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST
FLOOR OF A STRONG BUILDING. AVOID WINDOWS.

&

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 22, 9:45 PM ESTTornado WarningMLBLake65 min
Feb 22, 10:22 PM ESTTornado WarningMLBVolusia53 min
Feb 22, 11:20 PM ESTTornado WarningMLBVolusia45 min
Feb 22, 11:27 PM ESTTornado WarningMLBLake63 min
Feb 22, 11:37 PM ESTTornado WarningMLBOrange63 min
Feb 22, 11:56 PM ESTTornado WarningMLBSeminole59 min
Feb 23, 12:14 AM ESTTornado WarningMLBVolusia61 min
Feb 23, 12:21 AM ESTFlash Flood WarningMLBVolusia3 hr
Feb 23, 12:22 AM ESTTornado WarningMLBOsceola58 min
Feb 23, 12:40 AM ESTFlash Flood WarningMLBOrange, Seminole3 hr
Feb 23, 12:40 AM ESTTornado WarningMLBOrange45 min
Feb 23, 1:23 AM ESTTornado WarningMLBBrevard62 min
Feb 23, 2:27 AM ESTTornado WarningMLBBrevard48 min
Feb 23, 3:04 AM ESTTornado WarningMLBOsceola56 min
Feb 23, 3:16 AM ESTTornado WarningMLBBrevard59 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.