Alert archive / Illinois / Tornado Warnings in 2002

Tornado Warning 3, NWS Chicago, IL

June 4, 2002Livingston County, Illinois

NWS Chicago, IL issued this tornado warning at Jun 4, 2002, 3:17 PM CDT for Livingston County, Illinois. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 4, 2002, 3:17 PM CDT (20:17 UTC)
Expired: Jun 4, 2002, 3:45 PM CDT
In force: 28 min
Issued by: NWS Chicago, IL
Area: Counties, with a storm outline in the text

County Livingston County, IL

The radar

The Chicago radar (KLOT), 79 km from the middle of the area, began a volume at 20:19 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.3 hours before the alert went out and 98 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: 1332 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1268 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

168 
WFUS53 KLOT 042017
TORCHI
ILC105-042045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHICAGO IL
316 PM CDT TUE JUN 4 2002

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN LIVINGSTON COUNTY IN CENTRAL ILLINOIS

* UNTIL 345 PM CDT

* AT 316 PM CDT...A TRAINED SPOTTER REPORTED A TORNADO...AND RADAR
  INDICATED ROTATION NEAR MANVILLE...OR 5 MILES NORTHWEST OF CORNELL 
  AND ABOUT 6 MILES SOUTH OF STREATOR...MOVING EAST AT 30 MPH.

GO TO THE BASEMENT AND SEEK SHELTER UNDER THE STAIRS OR UNDER A HEAVY
PIECE OF FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN
INTERIOR CLOSET...BATHROOM...OR HALLWAY ON THE LOWEST FLOOR. STAY
AWAY FROM WINDOWS.

LAT...LON 4110 8890 4094 8891 4093 8827 4110 8828

RATZER

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 7:46 PM CDT	Severe Thunderstorm Warning	LOT	DeKalb, Kane, Kendall, Lee, Ogle	44 min
Jun 3, 7:59 PM CDT	Special Marine Warning	LOT		2 hr
Jun 3, 7:59 PM CDT	Special Marine Warning	LOT		2 hr
Jun 3, 7:59 PM CDT	Special Marine Warning	LOT		2 hr
Jun 3, 8:25 PM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage, Kane, Kendall, Will	50 min
Jun 4, 5:37 AM CDT	Flash Flood Warning	LOT	Ogle	3 hr
Jun 4, 7:03 AM CDT	Flash Flood Warning	LOT	Lee	3 hr
Jun 4, 1:01 PM CDT	Severe Thunderstorm Warning	LOT	DeKalb, Kane, Kendall, LaSalle	44 min
Jun 4, 1:22 PM CDT	Severe Thunderstorm Warning	LOT	DuPage, Will	38 min
Jun 4, 1:37 PM CDT	Severe Thunderstorm Warning	LOT	Cook	38 min
Jun 4, 1:44 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, LaSalle	46 min
Jun 4, 1:45 PM CDT	Special Marine Warning	LOT		60 min
Jun 4, 1:45 PM CDT	Special Marine Warning	LOT		60 min
Jun 4, 1:45 PM CDT	Special Marine Warning	LOT		60 min
Jun 4, 2:28 PM CDT	Severe Thunderstorm Warning	LOT	LaSalle, Livingston	47 min
Jun 4, 2:35 PM CDT	Tornado Warning	LOT	LaSalle, Livingston	40 min
Jun 4, 4:04 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, Livingston	26 min
Jun 4, 6:07 PM CDT	Severe Thunderstorm Warning	LOT	Livingston	23 min

Nearby

Tornado Warnings in Illinois, 2002 Every tornado warning in 2002 Tornadoes in 2002

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; radar from the NEXRAD Level II archive.