Alert archive / Indiana / Tornado Warnings in 1998

Tornado Warning 8, NWS Indianapolis, IN

April 8, 1998Jackson County, Indiana

NWS Indianapolis, IN issued this tornado warning at Apr 8, 1998, 7:46 PM EST for Jackson County, Indiana. It was in force for 34 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
Apr 8, 1998, 7:46 PM EST (00:46 UTC)
Expired
Apr 8, 1998, 8:20 PM EST
In force
34 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Jackson County, IN

What was reported inside it

TimeReportWhereRemark
Apr 8, 7:59 PM ESTHail 1.75Medora, IN

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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.8 hours before the alert went out and 201 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, Cncnati-Daytn, OH at 00:00Z on 1998-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 149 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, Cncnati-Daytn, OH at 00:00Z on 1998-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897117136156Sfc1 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
149 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1572 m above ground
0-6 km bulk shear
85 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 090046 RRA
TORIND
INC071-090120-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTED
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
746 PM EST WED APR 8 1998

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 820 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTH CENTRAL INDIANA

   ...JACKSON COUNTY

RADAR INDICATED A POSSIBLE TORNADO 20 MILES SOUTHEAST OF BEDFORD...
NEAR MEDORA IN SOUTHWEST JACKSON COUN:TY. THE STORM WAS MOVING
NORTHEAST AT 30 MPH.

IF YOU ARE CAUGHT OUTSIDE... SEEK SAFETY IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT... SEEK REFUGE IN A CULVERT... DITCH OR
LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

SLL

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 8, 8:29 PM ESTSevere Thunderstorm WarningINDRush36 min
Apr 8, 9:13 PM ESTSevere Thunderstorm WarningINDRandolph32 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.