Alert archive / Indiana / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 149, NWS Indianapolis, IN

August 31, 1989Cass County, White County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 31, 1989, 9:23 PM EST for Cass County, White County, Indiana. It was in force for 37 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
Aug 31, 1989, 9:23 PM EST (02:23 UTC)
Expired
Aug 31, 1989, 10:00 PM EST
In force
37 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Cass County, IN, White 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

TimeReportWhereRemark
Aug 31, 9:31 PM ESTThunderstorm Wind 0White, 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 00:00Z, 2.4 hours before the alert went out and 225 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 1989-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 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, Dayton/James M C, OH at 00:00Z on 1989-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
19 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
1648 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 10:36 PM ESTSevere Thunderstorm WarningINDBenton39 min
Sep 1, 5:56 AM ESTFlash Flood WarningINDDelaware, Madison2 hr
Sep 1, 5:56 AM ESTSevere Thunderstorm WarningINDDelaware, Madison64 min
Sep 1, 6:14 AM ESTSevere Thunderstorm WarningINDRandolph46 min
Sep 1, 8:02 AM ESTFlash Flood WarningINDWhite118 min
Sep 1, 9:38 AM ESTFlash Flood WarningINDBrown2 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 1989Every severe thunderstorm warning in 1989

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.