Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 41, NWS Melbourne, FL

September 2, 1998Seminole County, Florida

NWS Melbourne, FL issued this tornado warning at Sep 2, 1998, 6:48 PM EDT for Seminole County, Florida. It was in force for 62 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
Sep 2, 1998, 6:48 PM EDT (22:48 UTC)
Expired
Sep 2, 1998, 7:50 PM EDT
In force
62 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Seminole County, FL

The radar

The Melbourne radar (KMLB), 88 km from the middle of the area, began a volume at 22:50 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 nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 10.8 hours before the alert went out and 160 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 12:00Z on 1998-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 207 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 12:00Z on 1998-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.193958Sfc1 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
207 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1215 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLB 022250 RRA
TORMLB
FLC117-022350-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
648 PM EDT WED SEP 2 1998

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
     SEMINOLE COUNTY IN EAST CENTRAL FLORIDA

* UNTIL 750 PM EDT

* AT 648 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO ONE TORNADO WAS LOCATED JUST WEST OF BITHLO AND ANOTHER
  OVIEDO..  MOVEMENT WAS NORTH AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  GENEVA BY 705 PM AND AREAS SOUTH OF LAKE HARNEY BY 710 PM.

THIS IS A DANGEROUS STORM. BE PREPARED FOR DAMAGING WIND IN EXCESS
OF 58 MPH...LARGE HAIL AND DEADLY LIGHTNING. PEOPLE OUTSIDE OR INh
MOBILE HOMES SHOULD MOVE INSIDE A STRONG BUILDING AND STAY AWAY FROM
WINDOWS.

TT

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 5:21 PM EDTTornado WarningMLBLake64 min
Sep 2, 6:06 PM EDTTornado WarningMLBOrange64 min
Sep 2, 6:14 PM EDTSevere Thunderstorm WarningMLBBrevard66 min
Sep 2, 6:18 PM EDTTornado WarningMLBBrevard62 min
Sep 2, 7:20 PM EDTTornado WarningMLBBrevard, Volusia60 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.