Alert archive / Illinois / Tornado Warnings in 1986

Tornado Warning 1, NWS Lincoln, IL

May 15, 1986Lee County, Ogle County, Illinois

NWS Lincoln, IL issued this tornado warning at May 15, 1986, 3:32 PM CDT for Lee County, Ogle County, Illinois. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
May 15, 1986, 3:32 PM CDT (20:32 UTC)
Expired
May 15, 1986, 4:00 PM CDT
In force
28 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Lee County, IL, Ogle 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 12:00Z, 8.5 hours before the alert went out and 138 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 12:00Z on 1986-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 65 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, Peoria Regional, IL at 12:00Z on 1986-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 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
65 J/kg
Mixed-layer CIN
-131 J/kg
Mixed-layer LCL
905 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
27 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 KRFD 152032
TORRFD
ILC141-103-152100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE ROCKFORD IL
332 PM CDT THU MAY 15 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 400 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

NORTH CENTRAL ILLINOIS...SOUTH CENTRAL OGLE AND EXTREME NORTH 
 CENTRAL LEE

 AT 330 PM  CDT.. A TORNADO WAS TOUCHED DOWN NEAR DIXON ILLINOIS.
 OR ABOUT 40 MILES SOUTHWEST OF ROCKFORD ILLINOIS.  MOVEMENT WAS
 NORTHEAST AT 40 MPH.

 THE FOLLOWING COMMUNITIES WILL BE AFFECTED BY THIS TORNADO...
 ASHTON.. AND AREAS OF EXTREME SOUTH CENTRAL LEE CO.

 PERSON IN THE PATH OF THIS DANGEROUS STORM TAKE COVER IMMEDIATELY
 IN A BASEMENT OR SMALL CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR.
 ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING.  IF OUT-
 OF-DOORS GO TO A REINFORCED SHELTER OR A DITCH.. CULVERT OR RAVINE.

 ATTN:ISP DIST 18..2..16
 NAME

Nearby

Tornado Warnings in Illinois, 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.