Alert archive / Indiana / Tornado Warnings in 1997

Tornado Warning 8, NWS Indianapolis, IN

April 30, 1997Johnson County, Indiana

NWS Indianapolis, IN issued this tornado warning at Apr 30, 1997, 7:08 PM EST for Johnson County, Indiana. It was in force for 37 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 30, 1997, 7:08 PM EST (00:08 UTC)
Expired: Apr 30, 1997, 7:45 PM EST
In force: 37 min
Issued by: NWS Indianapolis, IN
Area: Whole counties

County Johnson County, IN

The radar

The Indianapolis radar (KIND), 29 km from the middle of the area, began a volume at 00:10 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

Time	Report	Where	Remark
Apr 30, 7:20 PM EST	Thunderstorm Wind	Greenwood, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 30, 5:30 PM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.1 hours before the alert went out and 198 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: 5 J/kg
Mixed-layer CIN: -452 J/kg
Mixed-layer LCL: 1959 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 321 m²/s²
0-3 km storm-relative helicity: 540 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 010010 RRA
TORIND
INC081-010045-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
708 PM EST WED APR 30 1997
 
THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  745 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL INDIANA
 
   ...JOHNSON COUNTY
 
JUST AFTER 700 A POSSIBLE TORNADO WAS REPORTED NEAR PROVIDENCE...OR 20
MILES SOUTH OF INDIANAPOLIS. THE THUNDERSTORM WAS MOVING NORTHEAST AT 40
MPH TOWARD THE TOWN OF WHITELAND.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER 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.
 
CS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:11 PM EST	Severe Thunderstorm Warning	IND	Bartholomew, Shelby	34 min
Apr 30, 7:16 PM EST	Severe Thunderstorm Warning	IND	Lawrence, Martin	29 min
Apr 30, 7:16 PM EST	Severe Thunderstorm Warning	IND	Monroe	29 min
Apr 30, 7:36 PM EST	Severe Thunderstorm Warning	IND	Decatur, Hancock, Henry, Rush	54 min

Nearby

Tornado Warnings in Indiana, 1997 Every tornado warning in 1997 Tornadoes in 1997

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.