Alert archive / Indiana / Tornado Warnings in 1998

Tornado Warning 41, NWS Northern Indiana

June 12, 1998Cass County, Indiana

NWS Northern Indiana issued this tornado warning at Jun 12, 1998, 4:42 PM EST for Cass County, Indiana. It was in force for 33 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: Jun 12, 1998, 4:42 PM EST (21:42 UTC)
Expired: Jun 12, 1998, 5:15 PM EST
In force: 33 min
Issued by: NWS Northern Indiana
Area: Whole counties

County Cass County, IN

The radar

The Northern Indiana radar (KIWX), 86 km from the middle of the area, began a volume at 21:46 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 12, 2:45 PM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.7 hours before the alert went out and 202 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: 538 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1016 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

710 
WFUS53 KIWX 122141 RRA
TORFWA
INC017-122215-

BULLETIN- EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
442 PM EST FRI JUN 12 1998

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* TORNADO WARNING FOR...
  CASS COUNTY IN NORTH CENTRAL INDIANA

* UNTIL 515 PM EST

* AT 441 PM EST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A DEVELOPING TORNADO 9 MILES WEST OF LOGANSPORT OR 2 MILES NORTH
  OF LAKE CICOTT MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN THE PATH OF THIS TORNADO ARE...
  GEORGETOWN
  LOGANSPORT
  ANOKA
  ADAMSBORO

THIS IS A DANGEROUS STORM ACT QUICKLY. SEEK SHELTER IN AN
INTERIOR ROOM ON THE LOWEST FLOOR AWAY FROM WINDOWS.

MES/JM

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 7:09 PM EST	Tornado Warning	IWX	Grant	46 min
Jun 11, 7:32 PM EST	Tornado Warning	IWX	Kosciusko	28 min
Jun 11, 7:44 PM EST	Tornado Warning	IWX	Elkhart	31 min
Jun 11, 7:54 PM EST	Tornado Warning	IWX	Grant	46 min
Jun 11, 7:59 PM EST	Tornado Warning	IWX	Grant, Huntington	51 min
Jun 11, 8:15 PM EST	Tornado Warning	IWX	Blackford	35 min
Jun 11, 9:33 PM EST	Severe Thunderstorm Warning	IWX	Adams, Wells	37 min
Jun 12, 2:55 PM EST	Severe Thunderstorm Warning	IWX	Marshall	35 min
Jun 12, 3:24 PM EST	Severe Thunderstorm Warning	IWX	Kosciusko	51 min
Jun 12, 3:28 PM EST	Tornado Warning	IWX	DeKalb, Steuben	47 min
Jun 12, 3:30 PM EST	Tornado Warning	IWX	Marshall	50 min
Jun 12, 3:52 PM EST	Severe Thunderstorm Warning	IWX	Whitley	33 min
Jun 12, 4:05 PM EST	Severe Thunderstorm Warning	IWX	LaGrange	50 min
Jun 12, 4:08 PM EST	Severe Thunderstorm Warning	IWX	Noble	32 min
Jun 12, 4:10 PM EST	Tornado Warning	IWX	Allen, Whitley	50 min
Jun 12, 4:16 PM EST	Severe Thunderstorm Warning	IWX	Kosciusko	34 min
Jun 12, 4:23 PM EST	Tornado Warning	IWX	Marshall, Starke	47 min
Jun 12, 4:26 PM EST	Severe Thunderstorm Warning	IWX	Saint Joseph	34 min
Jun 12, 4:37 PM EST	Tornado Warning	IWX	Whitley	33 min
Jun 12, 4:48 PM EST	Tornado Warning	IWX	Elkhart	32 min
Jun 12, 5:01 PM EST	Tornado Warning	IWX	White	34 min
Jun 12, 5:04 PM EST	Tornado Warning	IWX	Allen	36 min
Jun 12, 5:08 PM EST	Tornado Warning	IWX	LaGrange	32 min
Jun 12, 5:43 PM EST	Severe Thunderstorm Warning	IWX	Allen	32 min

Nearby

Tornado Warnings in Indiana, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.