Alert archive / Indiana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 56, NWS Indianapolis, IN

May 15, 1986Vanderburgh County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at May 15, 1986, 2:00 PM CDT for Vanderburgh County, Indiana. It was in force for 30 min. 2 reports 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 15, 1986, 2:00 PM CDT (19:00 UTC)
Expired: May 15, 1986, 2:30 PM CDT
In force: 30 min
Issued by: NWS Indianapolis, IN
Area: Whole counties

County Vanderburgh 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

Time	Report	Where	Remark
May 15, 2:15 PM CDT	Thunderstorm Wind 52	Vanderburgh, IN
May 15, 2:15 PM CDT	Thunderstorm Wind 52	Vanderburgh, 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 12:00Z, 7.0 hours before the alert went out and 134 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 KEVV 151900
SVREVV
INC163-151930-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EVANSVILLE IN
200 PM CDT THU MAY 15 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 230 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

SOUTHWEST INDIANA...VANDERBURGH

WEATHER RADAR INDICATED A VERY STRONG THUNDERSTORM 15 MILES
WEST OF EVANSVILLE..MOVING TO THE NORTHEAST AT 40 TO 45 MPH.
DAMAGE TO TREES AND A GARAGE HAVE BEEN REPORTED.

IF THREATENING WEATHER APPROACHES GO TO A SAFE PLACE IMMEDIATELY.
TO REPORT SEVERE WEATHER CONTACT THE NEAREST LAW ENFORCEMENT AGENCY
AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

WILLIAMS

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, May 15, 10:31 AM CDT, 3 hours 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1033 AM EST THU MAY 15 1986

ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE OVER CENTRAL AND SOUTHERN
INDIANA LATE THIS AFTERNOON AND EARLY TONIGHT.
HENDRICKSON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 7:15 PM CDT	Severe Thunderstorm Warning	IND	Gibson, Knox	45 min
May 15, 3:19 PM CDT	Severe Thunderstorm Warning	IND	Lawrence	41 min
May 15, 4:16 PM CDT	Tornado Warning	IND	Gibson, Pike	44 min
May 15, 4:29 PM CDT	Tornado Warning	IND	Posey, Vanderburgh	46 min
May 15, 4:31 PM CDT	Severe Thunderstorm Warning	IND	Madison	29 min
May 15, 5:05 PM CDT	Severe Thunderstorm Warning	IND	Randolph, Wayne	25 min
May 15, 5:23 PM CDT	Severe Thunderstorm Warning	IND	Union	22 min
May 15, 5:40 PM CDT	Tornado Warning	IND	Vanderburgh, Warrick	35 min
May 15, 6:15 PM CDT	Tornado Warning	IND	Dubois	45 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1986 Every 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.