Alert archive / Indiana / Tornado Warnings in 1998

Tornado Warning 20, NWS Louisville, KY

April 16, 1998Dubois County, Indiana

NWS Louisville, KY issued this tornado warning at Apr 16, 1998, 12:26 AM EST for Dubois County, Indiana. It was in force for 34 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
Apr 16, 1998, 12:26 AM EST (05:26 UTC)
Expired
Apr 16, 1998, 1:00 AM EST
In force
34 min
Issued by
NWS Louisville, KY
Area
Whole counties

County Dubois County, IN

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 15, 8:45 PM ESTTornado WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.4 hours before the alert went out and 248 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, Lincoln, IL at 00:00Z on 1998-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 426 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, Lincoln, IL at 00:00Z on 1998-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
426 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
919 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

823 
WFUS1 KSDF 160524 RRA
TORSDF
INC037-160600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
126 AM EDT THU APR 16 1998

* TORNADO WARNING FOR
  DUBOIS COUNTY - SOUTH CENTRAL INDIANA

* UNTIL 100 AM EST (200 AM EDT)

* SOME LOCATIONS AFFECTED
  HOLLAND IMMEDIATELY
  MILLERSPORT BY 1240 AM EST
  JASPER BY 1250 AM EST

* AT 120 AM EDT WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO
NEAR MILLERSPORT...50 MILES WEST OF LOUISVILLE.

THIS IS A DANGEROUS STORM. SEEK SHELTER IMMEDIATELY IN A REINFORCED
BUILDING AND STAY AWAY FROM WINDOWS AND OFF THE TELEPHONE. AVOID
DOWNED POWER LINES.

A TORNADO WATCH IS ALSO IN EFFECT.  SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE NOTICE.

SCHOLZ/COX

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 15, 9:07 PM ESTTornado WarningLMKOrange43 min
Apr 16, 1:07 AM ESTTornado WarningLMKOrange23 min
Apr 16, 1:30 AM ESTSevere Thunderstorm WarningLMKCrawford30 min
Apr 16, 1:41 AM ESTSevere Thunderstorm WarningLMKHarrison, Washington34 min

Nearby

Tornado Warnings in Indiana, 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.