Alert archive / Indiana / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 169, NWS Indianapolis, IN

November 15, 1989Boone County, Clinton County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Nov 15, 1989, 9:43 AM EST for Boone County, Clinton County, Indiana. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
Nov 15, 1989, 9:43 AM EST (14:43 UTC)
Expired
Nov 15, 1989, 10:15 AM EST
In force
32 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Boone County, IN, Clinton 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 12:00Z, 2.7 hours before the alert went out and 196 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 12:00Z on 1989-11-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 138 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 12:00Z on 1989-11-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 241 square meters per square second.19395878Sfc1 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
138 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
555 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
241 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.0

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
Nov 15, 8:45 AM ESTSevere Thunderstorm WarningINDVigo45 min
Nov 15, 9:08 AM ESTSevere Thunderstorm WarningINDClay, Parke37 min
Nov 15, 9:26 AM ESTSevere Thunderstorm WarningINDPutnam49 min
Nov 15, 9:31 AM ESTSevere Thunderstorm WarningINDCarroll, Tippecanoe29 min
Nov 15, 11:00 AM ESTSevere Thunderstorm WarningINDDelaware30 min
Nov 15, 12:37 PM ESTSevere Thunderstorm WarningINDDubois53 min
Nov 15, 1:07 PM ESTSevere Thunderstorm WarningINDRandolph, Wayne38 min
Nov 15, 5:29 PM ESTSevere Thunderstorm WarningINDMonroe42 min
Nov 15, 7:50 AM ESTSevere Thunderstorm WarningINDJasper40 min

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; the sounding from the Mesonet's radiosonde archive.