Alert archive / Illinois / Tornado Warnings in 1986

Tornado Warning 17, NWS Lincoln, IL

September 28, 1986Boone County, Ogle County, Winnebago County, Illinois

NWS Lincoln, IL issued this tornado warning at Sep 28, 1986, 6:00 PM CDT for Boone County, Ogle County, Winnebago County, Illinois. It was in force for 60 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: Sep 28, 1986, 6:00 PM CDT (23:00 UTC)
Expired: Sep 28, 1986, 7:00 PM CDT
In force: 60 min
Issued by: NWS Lincoln, IL
Area: Whole counties

Counties Boone County, IL, Ogle County, IL, Winnebago 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

Time	Report	Where	Remark
Sep 28, 6:15 PM CDT	Tornado F0	Winnebago, IL
Sep 28, 6:50 PM CDT	Thunderstorm Wind 0	Ogle, 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, 11.0 hours before the alert went out and 179 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: 2727 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 720 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 117 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 282300
TORRFD
ILC203-007-141-290000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE ROCKFORD IL
600 PM CDT SUN SEP 28 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 700 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

NORTH CENTRAL ILLINOIS...EXTREME WINNEBAGO...EXTREME BOONE AND 
 EXTREME OGLE

 AT 550 PM CDT A FUNNEL CLOUD WAS OBSERVED IN THE EASTERN PART OF
 WINNBEAGO COUNTY. THIS FUNNEL CLOUD WAS OCCURRING IN A STRONG
 LINE OF THUNDERSTORMS THAT IS MOVING THROUGH WINNEBAGO OGLE AND
 AND LEE COUNTIES.

 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.. FARM MACHINERY AND MOBILE HOMES FOR A REINFORCED
 BUILDING. IF OUT-OF-DOORS GO TO A REINFORCED SHELTER OR A DITCH..
 CULVERT OR RAVINE.  THIS IS A SERIOUS SITUATION.. YOUR LIFE MAY
 DEPEND UPON HOW QUICKLY YOU RESPOND TO THIS TORNADO WARNING!

 ATTN:ISP DIST 1,16
 DRAUS

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

Special weather statement, Sep 28, 1:38 PM CDT, 4 hours 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
135 PM CDT SUN SEP 28 1986

...THUNDERSTORMS DEVELOPING...

RADAR ONCE AGAIN INDICATES THUNDERSTORMS DEVELOPING OVER WEST
CENTRAL ILLINOIS.  THE SCATTERED AREA OF SHOWERS AND THUNDERSTORMS
EXTENDED FROM JUST WEST OF FARMINGTON... ABOUT 30 WEST OF PEORIA..
THROUGH MACOMB TO JUST EAST AND SOUTH OF QUINCY.

THE SHOWERS AND THUNDERSTORMS SHOULD MOVE TOWARD THE NORTHEAST AT
ABOUT 25 MILES AN HOUR.

STARK

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 28, 4:39 PM CDT	Severe Thunderstorm Warning	ILX	Stark	66 min
Sep 28, 4:39 PM CDT	Severe Thunderstorm Warning	ILX	Putnam	51 min
Sep 28, 5:14 PM CDT	Severe Thunderstorm Warning	ILX	Boone, Winnebago	61 min
Sep 28, 5:20 PM CDT	Severe Thunderstorm Warning	ILX	Stephenson	55 min

Nearby

Tornado Warnings in Illinois, 1986 Every tornado warning in 1986 Tornadoes 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.