Alert archive / Illinois / Tornado Warnings in 1986

Tornado Warning 15, NWS Lincoln, IL

September 24, 1986Peoria County, Woodford County, Illinois

NWS Lincoln, IL issued this tornado warning at Sep 24, 1986, 5:33 PM CDT for Peoria County, Woodford County, Illinois. It was in force for 57 min. 1 report 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
Sep 24, 1986, 5:33 PM CDT (22:33 UTC)
Expired
Sep 24, 1986, 6:30 PM CDT
In force
57 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Peoria County, IL, Woodford County, IL

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

TimeReportWhereRemark
Sep 24, 6:15 PM CDTTornado F2Woodford, IL

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

Peoria Regional, IL (KPIA), launched 12:00Z, 10.6 hours before the alert went out and 16 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 1986-09-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 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 1986-09-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.193958Sfc1 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
8 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
688 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
101 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 242233
TORPIA
ILC143-203-242330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE PEORIA IL
533 PM CDT WED SEP 24 1986

THE NATIONAL WEATHER SERVICE HA

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Sep 24, 11:47 AM CDT, 5 hours 46 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
1130 AM CDT WED SEP 24 1986

DELAYED STORM REPORTS FOR FRI SEP 19 1986

TIME              EVENT
400 PM CDT ...... MUCH FLOODING OF STREETS AND UNDERPASSES IN
                  CHAMPAIGN ILLINOIS. 2 FEET OF WATER IN SOME AREAS.
                  REPORTED BY CHAMPAIGN COUNTY SHERIFF.

408 PM CDT ...... MOBILE HOME OVERTURNED BY WINDS NEAR DANVILLE ILLINOIS.
                  REPORTED BY VERMILION COUNTY EMERGENCY SERVICES
                  AND DISASTER AGENCY.

HUGHES

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 24, 6:43 PM CDTTornado WarningILXMarshall, Woodford62 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.