Alert archive / Indiana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 25, NWS Louisville, KY

May 7, 1986Orange County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at May 7, 1986, 7:40 PM EST for Orange County, Indiana. It was in force for 30 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
May 7, 1986, 7:40 PM EST (00:40 UTC)
Expired
May 7, 1986, 8:10 PM EST
In force
30 min
Issued by
NWS Louisville, KY
Area
Whole counties

County Orange 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
May 7, 8:00 PM ESTThunderstorm Wind 0Orange, 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

Salem-Leckrone, IL (KSLO), launched 00:00Z, 0.7 hours before the alert went out and 209 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, Salem-Leckrone, IL at 00:00Z on 1986-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1778 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, Salem-Leckrone, IL at 00:00Z on 1986-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 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
1778 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1705 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
69 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 Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 8:10 PM ESTSevere Thunderstorm WarningLMKHenry, Oldham, Trimble35 min
May 7, 8:10 PM ESTSevere Thunderstorm WarningLMKJefferson, Shelby35 min
May 7, 8:30 PM ESTSevere Thunderstorm WarningLMKAnderson, Bullitt, Nelson, Spencer45 min
May 7, 8:30 PM ESTSevere Thunderstorm WarningLMKFranklin45 min
May 7, 8:30 PM ESTSevere Thunderstorm WarningLMKWashington45 min
May 7, 9:17 PM ESTSevere Thunderstorm WarningLMKHardin, Larue, Nelson, Washington43 min
May 7, 8:10 PM ESTSevere Thunderstorm WarningLMKCrawford35 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1986Every severe thunderstorm warning in 1986

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.