Alert archive / Illinois / Tornado Warnings in 1986

Tornado Warning 5, NWS Lincoln, IL

May 16, 1986Macon County, Sangamon County, Illinois

NWS Lincoln, IL issued this tornado warning at May 16, 1986, 5:29 PM CDT for Macon County, Sangamon County, Illinois. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
May 16, 1986, 5:29 PM CDT (22:29 UTC)
Expired
May 16, 1986, 6:00 PM CDT
In force
31 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Macon County, IL, Sangamon 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, 10.5 hours before the alert went out and 99 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 1986-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1986-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
812 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
73 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 KSPI 162229
TORSPI
ILC167-115-162300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
529 PM CDT FRI MAY 16 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 600 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

CENTRAL ILLINOIS...SANGAMON AND MACON

TORNADO ON THE GROUND 10 NORTH OF DECATUR ILLINOIS AT 520 PM CDT
NEAR FORSYTHE ILLINOI MOVING NORTHEAST.
ANOTHER TORNADO REPORTED ON THE GROUND 6 MILES WEST OF SPRINGFIELD
ILINOIS JUST NORTH OF CURRAN ILLINOIS AT 520 PM CDT.

TAKE COVER IMMEDIATELY.

IF THREATENING WEATHER APPROACHES..GO TO A SAFE PLACE IMMEDIATELY..
AND YOU SHOULD ASK THE NEAREST LA`W ENFORCEMENT TO RELAY YOUR SEVERE
WEATHER REPORT TO THE NATIONAL WEATHER SERVICE.

 ATTN ISP DIST...9 AND 10
 HUGHES

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 7:48 PM CDTTornado WarningILXColes27 min
May 15, 8:10 PM CDTTornado WarningILXEdgar35 min
May 15, 8:43 PM CDTTornado WarningILXEdgar32 min
May 16, 4:31 PM CDTSevere Thunderstorm WarningILXMacoupin, Morgan59 min
May 16, 5:09 PM CDTSevere Thunderstorm WarningILXMacon, Sangamon56 min
May 16, 5:54 PM CDTSevere Thunderstorm WarningILXChampaign, Piatt51 min
May 16, 6:24 PM CDTSevere Thunderstorm WarningILXDeWitt, Macon56 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; the sounding from the Mesonet's radiosonde archive.