Alert archive / Illinois / Tornado Warnings in 2001

Tornado Warning 2, NWS Chicago, IL

April 9, 2001Livingston County, Illinois

NWS Chicago, IL issued this tornado warning at Apr 9, 2001, 7:29 PM CDT for Livingston County, Illinois. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 9, 2001, 7:29 PM CDT (00:29 UTC)
Expired
Apr 9, 2001, 8:00 PM CDT
In force
31 min
Issued by
NWS Chicago, IL
Area
Whole counties

County Livingston County, IL

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 9, 6:15 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 83 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, Lincoln, IL at 00:00Z on 2001-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1891 joules per kilogram.LCLEL10008507005003002001001 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, Lincoln, IL at 00:00Z on 2001-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.1939587897Sfc1 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
1891 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
2017 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLOT 100030
TORCHI
ILC105-100100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHICAGO IL
729 PM CDT MON APR 9 2001

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

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

* UNTIL 800 PM CDT

* AT 729 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 3 MILES NORTH OF LONG
  POINT...OR ABOUT 6 MILES SOUTHWEST OF STREATOR...MOVING EAST AT 30
  MPH. THIS STORM COULD PRODUCE A TORNADO AT ANY TIME.

* THE TORNADO WILL BE NEAR
  CORNELL AND MANVILLE AROUND 740 PM CDT
  ODELL AROUND 800 PM CDT

IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR CLOSET...
BATHROOM...OR HALLWAY ON THE LOWEST FLOOR.STAY AWAY FROM WINDOWS.
ABANDON AUTOMOBILES AND MOBILE HOMES FOR STURDY SHELTER. AS A LAST
RESORT LIE FLAT IN A DITCH OR LOW SPOT. DO NOT GO UNDER BRIDGES.

KAPLAN

NNNN0

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 7:01 PM CDTTornado WarningLOTLaSalle, Livingston29 min
Apr 9, 10:12 PM CDTSevere Thunderstorm WarningLOTIroquois33 min
Apr 10, 12:54 AM CDTSevere Thunderstorm WarningLOTLivingston36 min

Nearby

Tornado Warnings in Illinois, 2001Every tornado warning in 2001Tornadoes in 2001

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.