Alert archive / Indiana / Tornado Warnings in 1986

Tornado Warning 12, NWS Indianapolis, IN

May 15, 1986Vanderburgh County, Warrick County, Indiana

NWS Indianapolis, IN issued this tornado warning at May 15, 1986, 5:40 PM CDT for Vanderburgh County, Warrick County, Indiana. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
May 15, 1986, 5:40 PM CDT (22:40 UTC)
Expired
May 15, 1986, 6:15 PM CDT
In force
35 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Vanderburgh County, IN, Warrick 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

Salem-Leckrone, IL (KSLO), launched 12:00Z, 10.7 hours before the alert went out and 144 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 12:00Z on 1986-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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 12:00Z on 1986-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 303 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
10 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
303 m²/s²
0-3 km storm-relative helicity
342 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 152241
TOREVV
INC163-173-152315-

BULLETIN...EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EVANSVILLE IN
ISSUED BY INDIANAPOLIS IN
540 PM EST THU MAY 15 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE
UNTIL 615 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

SOUTHWEST INDIANA... VANDERBURG AND WARRICK.

RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO NEAR EVANSVILLE AT 540PM EST. PERSONS IN THE PATH OF
THIS STORM SHOULD TAKE COVER IMMEDIATELY.
.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR
RELAY TO THE NATIONAL WEATHER SERVICE.
EDWARDS

The office that day

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

IssuedProductOfficeCountiesLasted
May 14, 7:15 PM CDTSevere Thunderstorm WarningINDGibson, Knox45 min
May 15, 2:00 PM CDTSevere Thunderstorm WarningINDVanderburgh30 min
May 15, 3:19 PM CDTSevere Thunderstorm WarningINDLawrence41 min
May 15, 4:16 PM CDTTornado WarningINDGibson, Pike44 min
May 15, 4:29 PM CDTTornado WarningINDPosey, Vanderburgh46 min
May 15, 4:31 PM CDTSevere Thunderstorm WarningINDMadison29 min
May 15, 5:05 PM CDTSevere Thunderstorm WarningINDRandolph, Wayne25 min
May 15, 5:23 PM CDTSevere Thunderstorm WarningINDUnion22 min
May 15, 6:15 PM CDTTornado WarningINDDubois45 min

Nearby

Tornado Warnings in Indiana, 1986Every tornado warning in 1986Tornadoes 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; the sounding from the Mesonet's radiosonde archive.