Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 2, NWS Jacksonville, FL

February 16, 1998Alachua County, Florida

NWS Jacksonville, FL issued this tornado warning at Feb 16, 1998, 7:47 PM EST for Alachua County, Florida. It was in force for 43 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 16, 1998, 7:47 PM EST (00:47 UTC)
Expired
Feb 16, 1998, 8:30 PM EST
In force
43 min
Issued by
NWS Jacksonville, FL
Area
Whole counties

County Alachua County, FL

The watch it was issued in

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

IssuedProductOfficeLasted
Feb 16, 6:15 PM ESTTornado WatchSPC7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 0.8 hours before the alert went out and 111 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, Jacksonville, FL at 00:00Z on 1998-02-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 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, Jacksonville, FL at 00:00Z on 1998-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 square meters per square second.1939587897Sfc1 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
21 J/kg
Mixed-layer CIN
-263 J/kg
Mixed-layer LCL
859 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAX 170047 RRA
TORJAX
FLC001-170130-

BULLETIN
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
747 PM EST MON FEB 16 1998


THE NATIONAL WEATHER SERVICE IN JACKSONVILLE FL HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 830 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHERN FLORIDA

   ...NORTHWESTERN ALACHUA


AT 742 PM EST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
DEVELOPING TORNADO 9 MILES SOUTHWEST OF HIGH SPRINGS MOVING NORTH AT 55
MPH.

THIS STORM IS EXPECTED TO MOVE THROUGH HIGH SPRINGS BETWEEN 750 AND
755 PM.


THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN THE
PATH OF THIS TORNADO MOVE TO A PLACE OF SAFETY BELOW GROUND 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.

PLEASE TUNE TO YOUR LOCAL RADIO OR TELEVISION STATIONS... YOUR CABLE
TELEVISION OUTLET..z. OR NOAA WEATHER RADIO.

P. PETERSON.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 16, 8:06 PM ESTSevere Thunderstorm WarningJAXUnion29 min
Feb 16, 8:18 PM ESTSevere Thunderstorm WarningJAXBaker42 min
Feb 16, 8:31 PM ESTSevere Thunderstorm WarningJAXNassau44 min
Feb 16, 8:55 PM ESTSevere Thunderstorm WarningJAXSuwannee45 min
Feb 16, 9:23 PM ESTSevere Thunderstorm WarningJAXColumbia, Hamilton42 min
Feb 16, 10:57 PM ESTSevere Thunderstorm WarningJAXColumbia, Hamilton, Suwannee48 min
Feb 16, 11:32 PM ESTSevere Thunderstorm WarningJAXBaker48 min
Feb 16, 11:52 PM ESTSevere Thunderstorm WarningJAXNassau48 min
Feb 17, 12:38 AM ESTSevere Thunderstorm WarningJAXColumbia, Gilchrist, Suwannee32 min
Feb 17, 12:54 AM ESTSevere Thunderstorm WarningJAXBaker, Union31 min
Feb 17, 1:18 AM ESTSevere Thunderstorm WarningJAXDuval, Nassau47 min
Feb 17, 8:16 AM ESTFlash Flood WarningJAXColumbia, Hamilton, Suwannee6 hr
Feb 17, 8:16 AM ESTFlash Flood WarningJAXBaker, Duval, Nassau6 hr
Feb 17, 8:16 AM ESTFlash Flood WarningJAXUnion6 hr
Feb 17, 8:16 AM ESTFlash Flood WarningJAXClay6 hr
Feb 17, 2:25 PM ESTFlash Flood WarningJAXAlachua, Columbia, Gilchrist, Hamilton, Suwannee, Union6 hr
Feb 17, 2:25 PM ESTFlash Flood WarningJAXBradford, Clay, Flagler, Putnam, Saint Johns6 hr
Feb 17, 2:25 PM ESTFlash Flood WarningJAXBaker, Duval, Nassau6 hr
Feb 17, 4:15 PM ESTFlash Flood WarningJAXBaker, Clay, Duval, Nassau, Saint Johns6 hr
Feb 17, 4:15 PM ESTFlash Flood WarningJAXColumbia, Gilchrist, Hamilton, Suwannee6 hr
Feb 17, 4:15 PM ESTFlash Flood WarningJAXAlachua, Bradford, Putnam, Union6 hr
Feb 17, 4:15 PM ESTFlash Flood WarningJAXFlagler6 hr

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.