Alert archive / Indiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 10, NWS Indianapolis, IN

April 15, 1998Morgan County, Putnam County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 15, 1998, 3:04 PM EST for Morgan County, Putnam County, Indiana. It was in force for 46 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
Apr 15, 1998, 3:04 PM EST (20:04 UTC)
Expired
Apr 15, 1998, 3:50 PM EST
In force
46 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Morgan County, IN, Putnam County, IN

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.1 hours before the alert went out and 179 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 1998-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1998-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 459 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
927 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
459 m²/s²
0-3 km storm-relative helicity
751 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.

632 
WUUS1 KIND 152014
SVRIND
INC109-133-152050-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
304 PM EST WED APR 15 1998

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MORGAN COUNTY IN CENTRAL INDIANA
  SOUTHEASTERN PUTNAM COUNTY IN WEST CENTRAL INDIANA

* UNTIL 350 PM EST

* AT 300 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CLOVERDALE...40 MILES SOUTHWEST OF
INDIANAPOLIS.
  .. MOVING EAST 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EMINENCE 320 PM
  MOVROVIA 330 PM

THIS STORM HAS A HISTORY OF LARGE HAIL. GO INSIDE A STURDY BUILDING
AND STAY AWAY FROM WINDOWS  GOLFBALL SIZE HAIL REPORTED NEAR
CLOVERDALE AT 255 PM
&
DS

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, Apr 15, 10:53 AM EST, 4 hours 11 minutes before
INZ003>009-012>018-020>049-051>057-060>065-067>072-151700-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1050 AM EST TUE APR 14 1998

...MODERATE RISK FOR SEVERE STORMS LATE THIS AFTERNOON AND TONIGHT IN
SOUTH AND CENTRAL INDIANA WITH A SLIGHT RISK IN THE NORTH...

SEVERE STORMS ARE POSSIBLE THROUGHOUT INDIANA LATE THIS AFTERNOON AND
OVERNIGHT.  THE GREATEST THREAT FOR SEVERE WEATHER WILL BE OVER THE
SOUTH TWO THIRDS OF INDIANA.  THE MAIN TIME FRAME FOR SEVERE WEATHER
WILL BEGIN LATE THIS AFTERNOON AND CONTINUE THROUGH THE NIGHT.
DAMAGING HAIL...DAMAGING WINDS AND TORNADOES WILL BE POSSIBLE.

A WARM FRONT WILL MOVE NORTHEAST ACROSS INDIANA TODAY PRODUCING SHOWERS
AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN. THE BIG STORMS MOST LIKELY TO
PRODUCE SEVERE WEATHER ARE NOT EXPECTED BEFORE LATE AFTERNOON AND WILL
BE BEHIND THE WARM FRONT IN THE WARMEST AND MOST UNSTABLE AIR.

SPOTTER ACTIVATION IS LIKELY LATE THIS AFTERNOONN AND THROUGH THE NIGHT.
TUCEK

Nearby

Severe Thunderstorm Warnings in Indiana, 1998Every severe thunderstorm warning 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.