Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 43, NWS Melbourne, FL

September 25, 1998Martin County, Florida

NWS Melbourne, FL issued this tornado warning at Sep 25, 1998, 6:10 AM EDT for Martin County, Florida. It was in force for 30 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 25, 1998, 6:10 AM EDT (10:10 UTC)
Expired
Sep 25, 1998, 6:40 AM EDT
In force
30 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Martin County, FL

The radar

The Melbourne radar (KMLB), 117 km from the middle of the area, began a volume at 10:10 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

Miami, FL (KMFL), launched 00:00Z, 10.2 hours before the alert went out and 141 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, Miami, FL at 00:00Z on 1998-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1419 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, Miami, FL at 00:00Z on 1998-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
1419 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
969 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
83 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.

280 
WFUS01 KMLB 251012 RRA
TORMLB
FLC085-251040-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
610 AM EDT FRI SEP 25 1998

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

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

* UNTIL 640 AM EDT

* AT 610 AM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO ALONG THE COAST NEAR JUPITER INLET.  MOVEMENT WAS NORTHWEST
  AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
    AFFECT AREAS BETWEEN INIANTOWN AND HOBE SOUND



THIS IS A DANGEROUS STORM. ACT QUICKLY. IF YOU ARE IN THE PATH OF
THIS TORNADO MOVE TO A SHELTER IF AVAILABLE. OTHERWISE GO TO A SMALL
INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID WINDOWS. ABANDON
CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET INTO A DITCH
OR CULVERT.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 25, 6:43 AM EDTTornado WarningMLBSaint Lucie62 min
Sep 25, 7:23 AM EDTTornado WarningMLBOkeechobee62 min
Sep 25, 7:29 AM EDTTornado WarningMLBMartin61 min
Sep 25, 8:05 AM EDTFlash Flood WarningMLBMartin, Saint Lucie115 min
Sep 25, 10:08 AM EDTTornado WarningMLBSaint Lucie67 min
Sep 25, 10:34 AM EDTTornado WarningMLBIndian River66 min
Sep 25, 11:34 AM EDTTornado WarningMLBIndian River56 min
Sep 25, 12:16 PM EDTTornado WarningMLBBrevard59 min
Sep 25, 12:23 PM EDTTornado WarningMLBOsceola57 min
Sep 25, 1:15 PM EDTTornado WarningMLBBrevard65 min
Sep 25, 1:27 PM EDTTornado WarningMLBOsceola58 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.