Alert archive / Indiana / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 98, NWS Indianapolis, IN

July 9, 1990Marion County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 9, 1990, 7:58 PM EST for Marion County, Indiana. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
Jul 9, 1990, 7:58 PM EST (00:58 UTC)
Expired
Jul 9, 1990, 8:30 PM EST
In force
32 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Marion County, IN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 1.0 hours before the alert went out and 166 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, Dayton/James M C, OH at 00:00Z on 1990-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 732 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dayton/James M C, OH at 00:00Z on 1990-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
732 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
696 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 100100
SVRIND
INC097-100130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
758 PM EST MON JUL 9 1990
 
THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  830 PM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN CENTRAL INDIANA
          ...NORTHERN MARION
 
AT 755 PM EST...NATIONAL WEATHER SERVICE RADAR SHOWED A SEVERE
THUNDERSTORM IN NORTHERN MARION COUNTY MOVING SLOWLY THROUGH THE
NORTHERN INDIANAPOLIS METROPOLITAN AREA. PEOPLE IN THE NORTHERN
INDIANAPOLIS METRO AREA SHOULD MOVE INDOORS IMMEDIATELY. COUNTY
SHERIFFS HAVE REPORTED HIGH WINDS AND SOME TREES DOWN ON THE NORTH
SIDE.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
MPD
N

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, Jul 9, 6:06 PM EST, 1 hour 52 minutes before
INZALL>-100200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
605 PM EST MON JUL 9 1990

A SEVERE THUUNDERSTORM WATCH IS NO LONGER IN EFFECT FOR THAT PART OF
INDIANA NORTH OF A LINE FROM 10 MILES NORTH OF LAFAYETTE TO 10 MILES
NORTH OF FORT WAYNE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR CENTRAL INDIANA
UNTIL 900 PM EST. THE WATCH AREA IS SOUTH OF A LINE FROM 10 MILES
NORTH OF LAFAYETTE TO 10 MILES NORTH OF FOR3T WAYNE AND NORTH OF A
LINE FROM TERRE HAUTE TO 40 MILES SOUTH OF RICHMOND.

MPD
Local storm report, Jul 9, 6:13 PM EST, 1 hour 45 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
613 PM EST MON JUL 9 1990

510 PM EST  TREES, LIGHTPOLES, AND POWER LINES DOWN NEAR LYNN IN
            SOUTHERN RANDOLPH COUNTY. A TRANSFORMER EXPLOD7ED WHEN
            A POLE FELL, AND A FALLEN POWER LINE SET FIRE TO A TREE.
            REPORT FROM THE RANDOLPH COUNTY POLICE.

MPD
Special weather statement, Jul 9, 6:34 PM EST, 1 hour 24 minutes before
INZ009-100030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
631 PM EST MON JUL 9 1990

THE SEVERE THUNDERSTORM WARNING FOR BOONE COUNTY HAS EXPIRED.

AT 625 PM EST VERY STRONG THUNDERSTORMS WERE STILL OVER PORTIONS OF
BOONE COUNTY. BRIEF PERIODS OF VERY HEAVY RAIN COULD STILL CAUSE LOCAL
FLOODING OF SMALL STREAMS AND STREETS.

OTHER STRONG THUNDERSTORMS WERE IN CENTRAL INDIANA FROM NEAR
INDIANAPOLIS WEST TO CENTRAL HENDRICKZS COUNTY AND THEN NORTH TO AROUND
LAFAYETTE. STRONG THUNDERSTORMS WERE ALSO MOVING INTO WESTERN HAMILTON
COUNTY.

PRICE
Special weather statement, Jul 9, 6:54 PM EST, 1 hour 4 minutes before
INZ005-007-009-010>-100100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
650 PM EST MON JUL 9 1990

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL INDIANA UNTIL
900 PM EST. THE WATCH AREA IS SOUTH OF A LINE FROM 10 MILES NORTH OF
LAFAYETTE TO 10 MILES NORTH OF FORT WAYNE...AND NORTH OF A LINE FROM
TERRE HAUTE TO 40 MILES SOUTH OF RICHMOND.

AT 645 PM EST VERY STRONG THUNDERSTORMS WERE FROM ABOUT 10 MILES SOUTH
OF LAFAYETTE SOUTHEAST TO 20 MILES NORTHWEST OF INDIANAPOLIS AND THEN
TO 25 MILES NORTH OF INDIANAPOLIS...THIS IS IN NORTHERN MONTGOMERY...
BOONE...SOUTHERN CLINTON...HAMILTON...AND WESTERN MADISON COUNTIES.

AT 647 PM EST THE BOONE COUNTY SHERIFFS OFFICE REPORTED VERY HEAVY RAIN
IN LEBANON.

SCATTERED SHOWERS AND THUNDERSTORMS WERE ALSO BETWEEN INDIANAPOLIS AND
TERRE HAUTE.
.
PRICE
Special weather statement, Jul 9, 7:29 PM EST, 29 minutes before
INZALL>-100200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
726 PM EST MON JUL 9 1990

THE SEVERE THUUNDERSTORM WATCH IS NO LONGER IN EFFECT FOR THAT PART
OF INDIANA NORTH OF A LINE FROM LAFAYETTE TO MUNCIE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR CENTRAL INDIANA
UNTIL 900 PM EST. THE WATCH AREA IS SOUTH OF A LINE FROM LAFAYETTE
TO MUNCIE AND NORTH OF A LINE FROM TERRE HAUTE TO 40 MILES SOUTH OF
RICHMOND.

AT 724 PM EST STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER
PARTS OF MONTGOMERY AND BOONE COUNTIES.

STRONG THUNDERSTORMS WERE ALSO MOVING OUT OF EAST CENTRAL ILLINOIS
INTO WARREN COUNTY.

PRICE
Special weather statement, Jul 9, 7:46 PM EST, 12 minutes before
INZ009>-100142-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
742 PM EST MON JUL 9 1990

AT 738 PM EST THE PUBLIC REPORTED WINDS ESTIMATED AT AROUND 50 MILES
AN HOUR ALONG WITH VERY HEAVY RAIN AND SOME POWER OUTAGES FROM 56TH
STREET TO 79TH STREET IN NORTHERN MARION COUNTY.

AT 739 PM EST AMATEUR RADIO OPERATORS REPORTED WINDS ESTIMATED AT
AROUND 50 MILES AN HOUR ALONG 79TH STREET IN NORTHEAST INDIANAPOLIS
AND POWER OUTAGES IN THAT AREA ALSO.

PRICE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 7:06 PM ESTFlash Flood WarningINDMontgomery3 hr
Jul 9, 7:55 PM ESTSevere Thunderstorm WarningINDFountain, Montgomery50 min
Jul 9, 8:29 PM ESTSevere Thunderstorm WarningINDMontgomery46 min
Jul 9, 8:51 PM ESTSevere Thunderstorm WarningINDBenton54 min
Jul 9, 10:19 PM ESTFlash Flood WarningINDMontgomery3 hr
Jul 9, 10:50 PM ESTFlash Flood WarningINDFountain2 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 1990Every severe thunderstorm warning in 1990

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.