Alert archive / Indiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 68, NWS Indianapolis, IN

August 25, 1997Daviess County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 25, 1997, 12:50 AM EST for Daviess County, Indiana. It was in force for 30 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: Aug 25, 1997, 12:50 AM EST (05:50 UTC)
Expired: Aug 25, 1997, 1:20 AM EST
In force: 30 min
Issued by: NWS Indianapolis, IN
Area: Whole counties

County Daviess County, IN

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.8 hours before the alert went out and 208 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: 1758 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 969 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 349 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 13.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 250552 RRA
SVRIND
INC027-250620-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1250 AM EST MON AUG 25 1997
 
THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  120 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST INDIANA
 
   ...DAVIESS COUNTY
 
AT 1250 AM EST RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES NORTHEAST
OF VINCENNES OR JUST NORTHWEST OF PLAINVILLE. THE STORM WAS MOVING
SOUTHEAST AT 30 MPH. SOME STORMS IN THE PATH OF THIS STORM INCLUDE
PLAINVILLE...EPSOM AND CORNETTSVILLE.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
JEH/ELSON

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

Local storm report, Aug 24, 8:23 PM EST, 4 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
823 PM EST SUN AUG 24 1997

TIME(EST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0721 PM    3 E MARTINSVILLE          IN   1.75 INCH HAIL
08/24/97   MORGAN

0721 PM    2 N MARTINSVILLE          IN   1.75 INCH HAIL
08/24/97   MORGAN

0730 PM    TRAFALGAR                 IN   2.75 INCH HAIL
08/24/97   JOHNSON

0730 PM    MORGANTOWN                IN   2.00 INCH HAIL
08/24/97   MORGAN

LASHLEY

Special weather statement, Aug 24, 9:04 PM EST, 3 hours 46 minutes before

INZ051-052-060-061-069-070-250300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
904 PM EST SUN AUG 24 1997

...THUNDERSTORMS WERE OVER WEST CENTRAL INDIANA...

STRONG STORMS WERE NEAR WORTHINGTON...25 MILES WEST OF BLOOMINGTON.
THEY WERE MOVING SOUTHEAST 45 MPH AND SHOULD BE JUST WEST OF BEDFORD
BETWEEN 930 AND 1000 PM.

OTHER STORMS WERE 15 MILES WEST OF TERRE HAUTE AND MOVING SOUTHEAST.
THEY SHOULD BE NEAR JASONVILLE BETWEEN 930 AND 1000 PM.

THUNDERSTORMS WILL HAVE DANGEROUS LIGHTNING AND BRIEF HEAVY RAINFALL.
HAIL IS POSSIBLE.

DS

Special weather statement, Aug 24, 9:05 PM EST, 3 hours 45 minutes before

INZ051-052-060-061-069-070-250300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
904 PM EST SUN AUG 24 1997

...THUNDERSTORMS WERE OVER WEST CENTRAL INDIANA...

STRONG STORMS WERE NEAR WORTHINGTON...25 MILES WEST OF BLOOMINGTON.
THEY WERE MOVING SOUTHEAST 45 MPH AND SHOULD BE JUST WEST OF BEDFORD
BETWEEN 930 AND 1000 PM.

OTHER STORMS WERE 15 MILES WEST OF TERRE HAUTE AND MOVING SOUTHEAST.
THEY SHOULD BE NEAR JASONVILLE BETWhEEN 930 AND 1000 PM.

THUNDERSTORMS WILL HAVE DANGEROUS LIGHTNING AND BRIEF HEAVY RAINFALL.
HAIL IS POSSIBLE.

DS

Local storm report, Aug 24, 11:12 PM EST, 1 hour 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
823 PM EST SUN AUG 24 1997

TIME(EST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0721 PM    3 E MARTINSVILLE          IN   1.75 INCH HAIL
08/24/97   MORGAN

0721 PM    2 N MARTINSVILLE          IN   1.75 INCH HAIL
08/24/97   MORGAN

0730 PM    TRAFALGAR                 IN   2.75 INCH HAIL
08/24/97   JOHNSON

0730 PM    MORvGANTOWN                IN   2.00 INCH HAIL
08/24/97   MORGAN

LASHLEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 7:14 PM EST	Severe Thunderstorm Warning	IND	Morgan	31 min
Aug 24, 7:25 PM EST	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Johnson	50 min
Aug 24, 9:15 PM EST	Severe Thunderstorm Warning	IND	Vigo	30 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1997 Every 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; the sounding from the Mesonet's radiosonde archive.