Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 30, NWS Miami, FL

November 4, 1998Palm Beach County, Florida

NWS Miami, FL issued this tornado warning at Nov 4, 1998, 3:51 PM EST for Palm Beach County, Florida. It was in force for 59 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Nov 4, 1998, 3:51 PM EST (20:51 UTC)
Expired: Nov 4, 1998, 4:50 PM EST
In force: 59 min
Issued by: NWS Miami, FL
Area: Whole counties

County Palm Beach County, FL

What was reported inside it

Time	Report	Where	Remark
Nov 4, 4:20 PM EST	Tornado F0	Boynton Beach, FL	Brief tornado touchdown near the turnpike and Hypoluxo Road did no known damage.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 4, 12:30 PM EST	Tornado Watch	SPC	12 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 8.9 hours before the alert went out and 93 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 715 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 738 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

535 
WFUS1 KMIA 042053 RRA
TORMIA
FLC099-042150-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
351 PM EST WED NOV 4 1998

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  PALM BEACH COUNTY IN SOUTHEASTERN FLORIDA

* UNTIL 450 PM EST

* AT 345 PM EST THE PUBLIC REPORTED A FUNNEL CLOUD WEST OF U.S. 441
  AT BOYNTON BEACH BOULEVARD. IT APPARENTLY TOUCHED DOWN BRIEFLY WITH
  LITTLE OR NO REPORTED DAMAGE. CONDITIONS REMAIN FAVORABLE FOR THE
  FORMATION OF ADDITIONAL FUNNEL CLOUDS... A FEW BECOMING TORNADOES
  AND TOUCHING DOWN BRIEFLY... WITHIN THE NEXT HOUR OR SO. THE
  THUNDERSTORMS WERE MOVING NORTH AT ABOUT 20 MPH.


IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS UNDER
STURDY FURNITURE IN AN INTERIOR ROOM ON THE LOWEST FLOOR. USE
PILLOWS TO PROTECT YOUR HEAD. AVOID WINDOWS. A MOBILE HOME IS NOT A
SAFE REFUGE FROM A TORNADO. MOVE TO A MORE SUBSTANTIAL BUILDING. DO
NOT TRY TO OUTRUN A TORNADO IN YOUR VEHICLE.





&

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 4, 4:39 PM EST	Tornado Warning	MFL	Monroe	46 min
Nov 4, 5:24 PM EST	Tornado Warning	MFL	Monroe	46 min
Nov 4, 6:08 PM EST	Tornado Warning	MFL	Monroe	32 min
Nov 4, 6:41 PM EST	Tornado Warning	MFL	Monroe	34 min
Nov 4, 6:53 PM EST	Tornado Warning	MFL	Miami-Dade	47 min

Nearby

Tornado Warnings in Florida, 1998 Every tornado warning in 1998 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.