Alert archive / Indiana / Tornado Warnings in 1998

Tornado Warning 9, NWS Indianapolis, IN

April 15, 1998Lawrence County, Martin County, Indiana

NWS Indianapolis, IN issued this tornado warning at Apr 15, 1998, 8:55 PM EST for Lawrence County, Martin County, Indiana. It was in force for 50 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 15, 1998, 8:55 PM EST (01:55 UTC)
Expired
Apr 15, 1998, 9:45 PM EST
In force
50 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Lawrence County, IN, Martin County, IN

The radar

The Louisville radar (KLVX), 108 km from the middle of the area, began a volume at 01:55 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.

What was reported inside it

TimeReportWhereRemark
Apr 15, 9:45 PM ESTThunderstorm WindMitchell, INThunderstorm winds caused damage to a barn and the roof of a garage.

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.

IssuedProductOfficeLasted
Apr 15, 8:45 PM ESTTornado WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.9 hours before the alert went out and 227 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.

672 
WFUS1 KIND 160156 RRA
TORIND
INC093-101-160245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
855 PM EST WED APR 15 1998

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN LAWRENCE COUNTY IN SOUTH CENTRAL INDIANA
  EASTERN MARTIN COUNTY IN SOUTHWESTERN INDIANA

* UNTIL 945 PM EST

* AT 853 PM EST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR SHOALS OR 40 MILES SOUTHWEST OF BLOOMINGTON... MOVING
  NORTHEAST AT 35 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  WILLIAMS BY 910 PM

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

KH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 7:32 PM ESTSevere Thunderstorm WarningINDGreene, Monroe63 min
Apr 15, 9:47 PM ESTFlash Flood WarningINDDaviess, Greene, Knox, Martin, Monroe3 hr
Apr 15, 9:47 PM ESTFlash Flood WarningINDBrown3 hr
Apr 15, 10:09 PM ESTFlash Flood WarningINDBartholomew, Decatur, Jackson, Jennings4 hr
Apr 15, 10:09 PM ESTFlash Flood WarningINDLawrence4 hr
Apr 16, 12:23 AM ESTSevere Thunderstorm WarningINDLawrence32 min
Apr 16, 12:46 AM ESTFlash Flood WarningINDDaviess, Greene, Knox4 hr
Apr 16, 12:46 AM ESTFlash Flood WarningINDBrown, Monroe4 hr
Apr 16, 12:46 AM ESTFlash Flood WarningINDMartin4 hr
Apr 16, 12:51 AM ESTSevere Thunderstorm WarningINDJackson49 min
Apr 16, 12:59 AM ESTFlash Flood WarningINDJackson, Lawrence4 hr
Apr 16, 12:59 AM ESTFlash Flood WarningINDBartholomew, Decatur, Jennings4 hr
Apr 16, 1:34 AM ESTSevere Thunderstorm WarningINDJennings46 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; radar from the NEXRAD Level II archive.