Alert archive / Indiana / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 3, NWS Indianapolis, IN

March 15, 1987Spencer County, Vanderburgh County, Warrick County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 15, 1987, 4:04 PM CST for Spencer County, Vanderburgh County, Warrick County, Indiana. It was in force for 41 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: Mar 15, 1987, 4:04 PM CST (22:04 UTC)
Expired: Mar 15, 1987, 4:45 PM CST
In force: 41 min
Issued by: NWS Indianapolis, IN
Area: Whole counties

Counties Spencer County, IN, 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.

What was reported inside it

Time	Report	Where	Remark
Mar 15, 4:09 PM CST	Hail 2.75	Warrick, IN
Mar 15, 4:34 PM CST	Hail 0.75	Spencer, 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, 10.1 hours before the alert went out and 156 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1496 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 194 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 152204
SVREVV
INC147-163-173-152245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EVANSVILLE IN
404 PM CST SUN MAR 15 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 445 PM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTHWEST INDIANA...SOUTHERN SPENCER...EASTERN VANDERBURGH AND 
 SOUTHERN WARRICK

AT 358 PM CST A SEVERE THUNDERSTORM WAS JUST EAST OF DOWNTOWN
EVANSVILLE MOVING TOWARDS THE EAST SOUTHEAST AT 30 MILES
AN HOUR.  GOLF BALL SIZE HAIL AND STRONG WINDS HAVE BEEN
REPORTED WITH THIS SEVERE THUNDERSTORM.

IF YOU ARE CAUGHT OUTSIDE SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

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.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 15, 3:29 PM CST	Severe Thunderstorm Warning	IND	Posey, Vanderburgh	31 min
Mar 15, 3:29 PM CST	Severe Thunderstorm Warning	IND	Warrick	31 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1987 Every severe thunderstorm warning in 1987

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.