Alert archive / Indiana / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 21, NWS Northern Indiana

July 9, 1990Grant County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Jul 9, 1990, 3:14 PM EST for Grant County, Indiana. It was in force for 31 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: Jul 9, 1990, 3:14 PM EST (20:14 UTC)
Expired: Jul 9, 1990, 3:45 PM EST
In force: 31 min
Issued by: NWS Northern Indiana
Area: Whole counties

County Grant County, IN

The radar

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

What was reported inside it

Time	Report	Where	Remark
Jul 9, 3:35 PM EST	Thunderstorm Wind 0	Grant, IN
Jul 9, 3:35 PM EST	Thunderstorm Wind 0	Grant, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 8.2 hours before the alert went out and 141 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: 1078 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFWA 092014
SVRFWA
INC053-092045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FORT WAYNE IN
314 PM EST MON JUL 9 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 345 PM EST FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTHEAST PART OF INDIANA
      NORTHERN GRANT

AT 311 PM EST RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES WEST
OF MARION IN NORTHEAST INDIANA.

THIS THUNDERSTORM WAS MOVING EAST AT 35 MPH.

PEOPLE IN THE AREA AROUND THE CITY OF MARION INDIANA
ARE IN THE PATH OF THIS STORM SHOULD SEEK SHELTER IN A STRONG
BUILDING. DO NOT STAND NEAR WINDOWS. DO NOT USE TELEPHONES
UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD AVOID LOW WATER
CROSSINGS.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE
SHOULD MOVE TO SHELTER...PREFERABLY INSIDE A STRONG BUILDING. ONCE
IN#SIDE...STAY AWAY FROM WINDOWS.

MARSHALL

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 11:17 AM EST	Severe Thunderstorm Warning	IWX	Huntington, Wells	28 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1990 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.