Alert archive / Indiana / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 128, NWS Indianapolis, IN

July 8, 1991Cass County, White County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 8, 1991, 1:11 AM EST for Cass County, White County, Indiana. It was in force for 49 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
Jul 8, 1991, 1:11 AM EST (06:11 UTC)
Expired
Jul 8, 1991, 2:00 AM EST
In force
49 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Cass County, IN, White County, IN

What was reported inside it

TimeReportWhereRemark
Jul 8, 1:40 AM ESTThunderstorm Wind 0Cass, 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, 6.2 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 1991-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2675 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 1991-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
2675 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1471 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

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.

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 7, 7:27 PM EST, 5 hours 44 minutes before
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Special weather statement, Jul 7, 8:45 PM EST, 4 hours 26 minutes before
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Special weather statement, Jul 7, 9:29 PM EST, 3 hours 42 minutes before
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Special weather statement, Jul 7, 10:07 PM EST, 3 hours 4 minutes before
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Special weather statement, Jul 7, 11:08 PM EST, 2 hours 3 minutes before
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Special weather statement, Jul 8, 12:23 AM EST, 48 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 7:53 PM ESTSevere Thunderstorm WarningINDJasper, Newton37 min
Jul 7, 8:18 PM ESTSevere Thunderstorm WarningINDPulaski42 min
Jul 7, 8:28 PM ESTSevere Thunderstorm WarningINDJasper, White32 min
Jul 7, 9:37 PM ESTSevere Thunderstorm WarningINDLaPorte53 min
Jul 7, 10:23 PM ESTSevere Thunderstorm WarningINDMarshall52 min
Jul 7, 10:33 PM ESTSevere Thunderstorm WarningINDLaPorte42 min
Jul 7, 11:03 PM ESTSevere Thunderstorm WarningINDKosciusko42 min
Jul 7, 11:21 PM ESTSevere Thunderstorm WarningINDMarshall69 min
Jul 7, 11:21 PM ESTSevere Thunderstorm WarningINDLaPorte69 min
Jul 7, 11:50 PM ESTSevere Thunderstorm WarningINDKosciusko40 min
Jul 8, 12:15 AM ESTSevere Thunderstorm WarningINDStarke45 min
Jul 8, 12:26 AM ESTSevere Thunderstorm WarningINDPulaski49 min
Jul 8, 12:51 AM ESTSevere Thunderstorm WarningINDFulton54 min
Jul 8, 1:17 AM ESTSevere Thunderstorm WarningINDPulaski28 min
Jul 8, 2:24 AM ESTSevere Thunderstorm WarningINDClinton, Tipton51 min
Jul 8, 4:24 AM ESTSevere Thunderstorm WarningINDRush36 min
Jul 8, 2:19 PM ESTSevere Thunderstorm WarningINDDecatur41 min
Jul 8, 2:33 PM ESTSevere Thunderstorm WarningINDJennings27 min
Jul 8, 2:45 PM ESTSevere Thunderstorm WarningINDLawrence30 min
Jul 8, 4:08 PM ESTSevere Thunderstorm WarningINDPerry37 min
Jul 8, 4:49 PM ESTSevere Thunderstorm WarningINDPerry26 min
Jul 8, 5:50 PM ESTSevere Thunderstorm WarningINDSpencer40 min
Jul 8, 6:54 PM ESTSevere Thunderstorm WarningINDGrayson, Ohio51 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1991Every severe thunderstorm warning in 1991

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.