Alert archive / Indiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 11, NWS Indianapolis, IN

April 15, 1998Greene County, Monroe County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 15, 1998, 7:32 PM EST for Greene County, Monroe County, Indiana. It was in force for 63 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 15, 1998, 7:32 PM EST (00:32 UTC)
Expired
Apr 15, 1998, 8:35 PM EST
In force
63 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Greene County, IN, Monroe County, IN

What was reported inside it

TimeReportWhereRemark
Apr 15, 7:38 PM ESTHail 0.75Bloomfield, 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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 197 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 00:00Z on 1998-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 426 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1998-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939587897Sfc1 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
426 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
919 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 160032 RRA
SVRIND
INC055-105-160135-

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

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GREENE COUNTY IN SOUTHWESTERN INDIANA
  MONROE COUNTY IN SOUTH CENTRAL INDIANA

* UNTIL 835 PM EST

* SEVERE THUNDERSTORM WILL BE NEAR-
  ELLETTSVILLE AROUND 755 PM EST
  BLOOMINGTON AROUND 800 PM EST

* AT 728 PM EST...SEVERE THUNDERSTORMS WERE INDICATED 29 MILES
SOUTHWEST OF BLOOMINGTON OR 5 MILES SOUTHWEST OF BLOOMFIELD... BY
NATIONAL WEATHER SERVICE DOPPLER RADAR... MOVING NORTHEAST 35 MPH.

DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

WHEN THUNDERSTORMS ARE OCCURRING... PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR
ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS
PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

JAS

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, 7:19 PM EST, 13 minutes before
INZ061-062-160230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
719 PM EST WED APR 15 1998

STRONG THUNDERSTORMS HAVE DEVELOPED IN SOUTHWEST INDIANA. AT 710PM
EST. THE STORMS HAVE DEVELOPED IN SOUTHERN GREENE COUNTY. THESE
STORMS MAY BE PRODUCING SMALL HAIL...BRIEF HEAVY DOWNPOURS AND GUSTY
WINDS. THE STORMS WILL BE NEAR SALSBERRY BY 730 PM AND BLOOMINGTON
SHORTLY AFTER 800PM.

HAINES
Special weather statement, Apr 15, 7:19 PM EST, 13 minutes before
INZ061-062-160230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
719 PM EST WED APR 15 1998

STRONG THUNDERSTORMS HAVE DEVELOPED IN SOUTHWEST INDIANA. AT 710PM
EST. THE STORMS HAVE DEVELOPED IN SOUTHERN GREENE COUNTY. THESE
STORMS MAY BE PRODUCING SMALL HAIL...BRIEF HEAVY DOWNPOURS AND GUSTY
WINDS. THE STORMS WILL BE NEAR SALSBERRY BY 730 PM AND BLOOMINGTON
SHORTLY AFTER 800PM.

HAINES

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 8:55 PM ESTTornado WarningINDLawrence, Martin50 min
Apr 15, 9:47 PM ESTFlash Flood WarningINDDaviess, Greene, Knox, Martin, Monroe3 hr
Apr 15, 9:47 PM ESTFlash Flood WarningINDBrown3 hr
Apr 15, 10:09 PM ESTFlash Flood WarningINDBartholomew, Decatur, Jackson, Jennings4 hr
Apr 15, 10:09 PM ESTFlash Flood WarningINDLawrence4 hr
Apr 16, 12:23 AM ESTSevere Thunderstorm WarningINDLawrence32 min
Apr 16, 12:46 AM ESTFlash Flood WarningINDDaviess, Greene, Knox4 hr
Apr 16, 12:46 AM ESTFlash Flood WarningINDBrown, Monroe4 hr
Apr 16, 12:46 AM ESTFlash Flood WarningINDMartin4 hr
Apr 16, 12:51 AM ESTSevere Thunderstorm WarningINDJackson49 min
Apr 16, 12:59 AM ESTFlash Flood WarningINDJackson, Lawrence4 hr
Apr 16, 12:59 AM ESTFlash Flood WarningINDBartholomew, Decatur, Jennings4 hr
Apr 16, 1:34 AM ESTSevere Thunderstorm WarningINDJennings46 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.