Alert archive / Indiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 34, NWS Indianapolis, IN

June 21, 1997Boone County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 21, 1997, 5:03 PM EST for Boone County, Indiana. It was in force for 42 min. 2 reports 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
Jun 21, 1997, 5:03 PM EST (22:03 UTC)
Expired
Jun 21, 1997, 5:45 PM EST
In force
42 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Boone County, IN

What was reported inside it

TimeReportWhereRemark
Jun 21, 5:25 PM ESTThunderstorm WindMechanicsburg, INTrees blown down.
Jun 21, 5:30 PM ESTThunderstorm WindRosston, INTwo foot diameter tree blown down.

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

Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 182 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 12:00Z on 1997-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3170 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 1997-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 square meters per square second.193958Sfc1 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
3170 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
624 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
146 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.

737 
WUUS1 KIND 212204 RRA
SVRIND
INC011-212245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
503 PM EST SAT JUN 21 1997
 
THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL INDIANA
 
   ...BOONE COUNTY
 
AT 500 PM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM IN WESTERN BOONE
COUNTY...ABOUT 10 MILES WEST OF LEBANON. THIS STORM IS MOVING TO THE
EAST AROUND 30 MILES AN HOUR.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DONT USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 21, 12:32 PM EST, 4 hours 31 minutes before
INZ071-072-211830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1232 PM EST SAT JUN 21 1997

...HEAVY RAINFALL POSSIBLE OVER SOUTH CENTRAL INDIANA...

THUNDERSTORMS ABOUT 20 MILES WEST OF SEYMOUR AT 1220 PM WILL PRODUCE
HEAVY RAINFALL AND DANGEROUS LIGHTNING OVER PARTS OF JACKSON COUNTY.
RAINFALL OF ONE HALF OF AN INCH TO ONE INCH IN LESS THAN ONE HOUR IS
POSSIBLE. HAIL IS ALSO POSSIBLE FROM THOSE STORMS. THE STORMS WERE
MOVING EAST 15 MPH.

THUNDERSTORMS WILL BE SCATTERED OVER SOUTH CENTRAL INDIANA THROUGH
THE EARLY AFTERNOON.

DS
Special weather statement, Jun 21, 3:14 PM EST, 1 hour 49 minutes before
INZ003>009-012>018-020>031-035>037-043>046-051>053-060-061-212130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
314 PM EST SAT JUN 21 1997

...THUNDERSTORMS WERE DEVELOPING OVER NORTHWEST INDIANA...

THE THUNDERSTORMS WERE SCATTERED FROM JUST WEST OF SOUTH BEND TO WEST
OF LAFAYETTE AT 305 PM. THEY WILL MOVE TO NORTHEAST INDIANA BEFORE
500 PM. STORMS SHOULD END OVER THE NORTHWEST BEFORE 700 PM. THE
STORMS WILL HAVE DANGEROUS LIGHTNING. HEAVY RAINFALL...GUSTY WINDS
AND HAIL ARE POSSIBLE.

SCATTERED THUNDERSTORMS ARE LIKELY TO DEVELOP OVER WEST CENTRAL
INDIANA BEFORE 600 PM.

DS
Special weather statement, Jun 21, 3:51 PM EST, 1 hour 12 minutes before
INZ021-022-029-212200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
351 PM EST SAT JUN 21 1997

...THUNDERSTORMS WERE OVER NORTHWEST INDIANA...

THUNDERSTORMS WERE SCATTERED FROM AROUND SOUTH BEND TO JUST WEST OF
LAFAYETTE AT 350 PM. THE STORMS WERE MOVING EAST AND WILL BE INTO THE
LAFAYETTE AND LOGANSPORT AREAS BY 430 PM.

EXPECT DANGEROUS LIGHTNING AND BRIEF HEAVY RAINFALL WITH THESE
STORMS. HAIL AND GUSTY WINDS ARE POSSIBLE.

DS
Special weather statement, Jun 21, 3:52 PM EST, 1 hour 11 minutes before
INZ021-022-029-212200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
351 PM EST SAT JUN 21 1997

...THUNDERSTORMS WERE OVER NORTHWEST INDIANA...

THUNDERSTORMS WERE SCATTERED FROM AROUND SOUTH BEND TO JUST WEST OF
LAFAYETTE AT 350 PM. THE STORMS WERE MOVING EAST AND WILL BE INTO THE
LAFAYETTE AND LOGANSPORT AREAS BY 430 PM.

EXPECT DANGEROUS LIGHTNING AND BRIEF HEAVY RAINFALL WITH THESE
STORMS. HAIL AND GUSTY WINDS ARE POSSIBLE.

DS
Special weather statement, Jun 21, 4:45 PM EST, 18 minutes before
INZ028>031-035>040-043>047-212300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
445 PM EST SAT JUN 21 1997

...SEVERE THUNDERSTORM WARNING NO LONGER IN EFFECT FOR NORTHERN
FOUNTAIN COUNTY. THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN
TIPPECANOE COUNTY REMAINS IN EFFECT UNTIL 5 PM...

A STRONG THUNDERSTORM WAS INDICATED ON RADAR NEAR ROMNEY...10 MILES
SOUTH OF LAFAYETTE. THIS STORM WAS MOVING EAST TOWARD CLARKS HILL.
OTHER THUNDERSTORMS CONTINUED FROM ABOUT 10 MILES SOUTHWEST OF
COVINGTON...TO JUST SOUTH OF LAFAYETTE AND THEN TO SOUTH OF KOKOMO. .

THE STORMS ARE MOVING TO THE EAST AROUND 25 MILES AN HOUR.
EXPECT DANGEROUS LIGHTNING AND HEAVY RAINFALL WITH THESE STORMS. HAIL
AND GUSTY WINDS ARE POSSIBLE.

MES
Special weather statement, Jun 21, 4:46 PM EST, 17 minutes before
INZ028>031-035>040-043>047-212300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
445 PM EST SAT JUN 21 1997

...SEVERE THUNDERSTORM WARNING NO LONGER IN EFFECT FOR NORTHERN
FOUNTAIN COUNTY. THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN
TIPPECANOE COUNTY REMAINS IN EFFECT UNTIL 5 PM...

A STRONG THUNDERSTORM WAS INDICATED ON RADAR NEAR ROMNEY...10 MILES
SOUTH OF LAFAYETTE. THIS STORM WAS MOVING EAST TOWARD CLARKS HILL.
OTHER THUNDERSTORMS CONTINUED FROM ABOUT 10 MILES SOUTHWEST OF
COVINGTON...TO JUST SOUTH OF LAFAYETTE AND THEN TO SOUTH OF KOKOMO. .

THE STORMS ARE MOVING TO THE EAST AROUND 25 MILES AN HOUR.
EXPECT DANGEROUS LIGHTNING AND HEAVY RAINFALL WITH THESE STORMS. HAIL
AND GUSTY WINDS ARE POSSIBLE.

MES

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 4:11 PM ESTSevere Thunderstorm WarningINDFountain, Tippecanoe49 min
Jun 21, 4:50 PM ESTSevere Thunderstorm WarningINDMontgomery40 min
Jun 21, 5:48 PM ESTSevere Thunderstorm WarningINDClay, Putnam42 min
Jun 21, 6:15 PM ESTSevere Thunderstorm WarningINDDelaware45 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1997Every severe thunderstorm warning 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.