Alert archive / Illinois / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 67, NWS Lincoln, IL

July 31, 1986Peoria County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 31, 1986, 7:58 PM CDT for Peoria County, Illinois. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1986, 7:58 PM CDT (00:58 UTC)
Expired
Jul 31, 1986, 9:00 PM CDT
In force
62 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Peoria County, IL

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

Peoria Regional, IL (KPIA), launched 00:00Z, 1.0 hours before the alert went out and 19 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, Peoria Regional, IL at 00:00Z on 1986-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2956 joules per kilogram.LCLEL10008507005003002001001 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, Peoria Regional, IL at 00:00Z on 1986-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
2956 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
701 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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 KPIA 010058
SVRPIA
ILC143-010200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEORIA IL
758 PM CDT THU JUL 31 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 900 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

CENTRAL ILLINOIS...CENTRAL AND SOUTHERN PEORIA

AT 750 PM CDT THE PUBLIC REPORTED A SEVERE THUNDERSTORM OVER
KICKAPOO MOVING SLOWLY SOUTH.

THREE QUARTER INCH HAIL...FREQUENT LIGHTNING AND HEAVY RAIN
WAS ASSOCIATED WITH THIS STORM.

COMMUNITIES IN THE DIRECT PATH OF THIS STORM ARE ELMWOOD
AND WEST PEORIA.

 REMEMBER A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN
 EXCESS OF 60 MPH...LARGE HAIL#...DEADLY LIGHTNING...AND HEAVY RAIN
 THAT CAN QUICKLY FLOOD A LOW LYING AREA.

ATTN ISP 8,14

STUMETZ

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 31, 4:35 PM CDT, 3 hours 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
435 PM CDT THU JUL 31 1986

AT 430 PM RADAR INDICATED A VERY HEAVY THUNDERSTORM IN WEST CENTRAL
ILLINOIS OVER LOMAX OR ABOUT 20 MILES SOUTHEAST OF BURLINGTON IOWA.
THIS STORM WAS MOVING SOUTHEAST 20 MPH.

AT 430 PM THE HENDERSON COUNTY CIVIL DEFENSE REPORTED HEAVY HAIL..
GUSTY SURFACE WINDS..AND FREQUENT LIGHTNING WITH THIS STORM.

STUMETZ
Special weather statement, Jul 31, 7:45 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
745 PM CDT THU JUL 31 1986

AT 735 PM CDT RADAR INDICATED A VERY HEAVY THUNDERSTORM OVER
THE NORTHWEST CORNER OF PEORIA COUNTY NEAR BRIMFIELD OR 25 MILES
NORTHWEST OF PEORIA MOVING SLOWLY SOUTH.

AT 740 PM THE PUBLIC REPORTED ONE QUARTER INCH HAIL..WIND SPEEDS
BETWEEN 30 TO 40 MPH...HEAVY RAINFALL AND FREQUENT LIGHTNING OVER
JUBILLE STATE PARK WITH THIS STORM.

STUMETZ

Nearby

Severe Thunderstorm Warnings in Illinois, 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; the sounding from the Mesonet's radiosonde archive.