Alert archive / Illinois / Tornado Warnings in 2000

Tornado Warning 1, NWS Lincoln, IL

April 20, 2000DeWitt County, Logan County, Macon County, Illinois

NWS Lincoln, IL issued this tornado warning at Apr 20, 2000, 9:06 AM CDT for DeWitt County, Logan County, Macon County, Illinois. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Apr 20, 2000, 9:06 AM CDT (14:06 UTC)
Expired: Apr 20, 2000, 9:45 AM CDT
In force: 39 min
Issued by: NWS Lincoln, IL
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties DeWitt County, IL, Logan County, IL, Macon County, IL

What was reported inside it

Time	Report	Where	Remark
Apr 20, 9:30 AM CDT	Hail 0.75	Clinton, 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 20, 4:15 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 2.1 hours before the alert went out and 50 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: 595 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 873 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KILX 201407
TORSPI
ILC039-107-115-201445-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
906 AM CDT THU APR 20 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  DE WITT COUNTY IN CENTRAL ILLINOIS
  MACON COUNTY IN CENTRAL ILLINOIS
  LOGAN COUNTY IN CENTRAL ILLINOIS

* UNTIL 945 AM CDT

* AT 906 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 4 MILES SOUTHWEST OF LATHAM...OR ABOUT 16 MILES
  WEST OF DECATUR...MOVING NORTHEAST AT 45 MPH. 

* THE TORNADO IS EXPECTED TO BE NEAR...
  MOUNT PULASKI
  LATHAM
  CHESTNUT
  BEASON
  KENNEY
  WAYNESVILLE
  CLINTON
  WAPELLA

THIS IS A DANGEROUS SITUATION. THE TORNADO IS LIKELY OBSCURED BY RAIN
AND MAY NOT BE VISIBLE. IF YOU ARE IN THE WARNED AREA...GO TO A
BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR. DO NOT REMAIN IN YOUR
CAR OR MOBILE HOME.

REPORT SEVERE WEATHER OR ANY STORM DAMAGE TO YOUR NEAREST LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. YOUR
REPORT COULD HELP SAVE LIVES. STAY TUNED FOR LATER STATEMENTS.

&

LAT...LON 3993 8941 3992 8921 4022 8874 4028 8911

KETCHAM 
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 9:06 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Schuyler	54 min
Apr 19, 9:06 PM CDT	Severe Thunderstorm Warning	ILX	Morgan	54 min
Apr 19, 9:39 PM CDT	Severe Thunderstorm Warning	ILX	Fulton	51 min
Apr 19, 10:24 PM CDT	Severe Thunderstorm Warning	ILX	Peoria	51 min
Apr 19, 11:10 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason	50 min
Apr 20, 1:34 AM CDT	Severe Thunderstorm Warning	ILX	Knox	41 min
Apr 20, 2:03 AM CDT	Severe Thunderstorm Warning	ILX	Stark	42 min
Apr 20, 4:49 AM CDT	Severe Thunderstorm Warning	ILX	Cass, Morgan, Schuyler	56 min
Apr 20, 4:49 AM CDT	Severe Thunderstorm Warning	ILX	Scott	56 min
Apr 20, 4:56 AM CDT	Severe Thunderstorm Warning	ILX	Knox	49 min
Apr 20, 5:21 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason	54 min
Apr 20, 5:21 AM CDT	Severe Thunderstorm Warning	ILX	Menard, Sangamon	54 min
Apr 20, 5:33 AM CDT	Severe Thunderstorm Warning	ILX	Stark	27 min
Apr 20, 5:47 AM CDT	Severe Thunderstorm Warning	ILX	Logan, Peoria, Tazewell	43 min
Apr 20, 6:02 AM CDT	Severe Thunderstorm Warning	ILX	Marshall, Woodford	43 min
Apr 20, 6:02 AM CDT	Severe Thunderstorm Warning	ILX	McLean	43 min
Apr 20, 6:13 AM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Macon	47 min
Apr 20, 7:48 AM CDT	Severe Thunderstorm Warning	ILX	Morgan, Sangamon	42 min
Apr 20, 8:27 AM CDT	Severe Thunderstorm Warning	ILX	Sangamon	48 min
Apr 20, 8:31 AM CDT	Severe Thunderstorm Warning	ILX	Logan	44 min
Apr 20, 8:37 AM CDT	Severe Thunderstorm Warning	ILX	DeWitt, McLean	53 min
Apr 20, 9:05 AM CDT	Severe Thunderstorm Warning	ILX	Christian	40 min
Apr 20, 9:30 AM CDT	Tornado Warning	ILX	McLean	60 min
Apr 20, 9:33 AM CDT	Tornado Warning	ILX	Piatt	42 min
Apr 20, 9:34 AM CDT	Severe Thunderstorm Warning	ILX	Moultrie, Shelby	56 min
Apr 20, 9:45 AM CDT	Tornado Warning	ILX	DeWitt	30 min
Apr 20, 10:04 AM CDT	Tornado Warning	ILX	Champaign	56 min
Apr 20, 10:23 AM CDT	Tornado Warning	ILX	Moultrie, Shelby	52 min
Apr 20, 10:39 AM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham	51 min
Apr 20, 10:47 AM CDT	Tornado Warning	ILX	Champaign, Douglas	58 min
Apr 20, 10:51 AM CDT	Tornado Warning	ILX	Coles	39 min
Apr 20, 11:11 AM CDT	Tornado Warning	ILX	Cumberland	49 min
Apr 20, 11:27 AM CDT	Tornado Warning	ILX	Jasper	48 min
Apr 20, 11:40 AM CDT	Tornado Warning	ILX	Clark	50 min
Apr 20, 11:58 AM CDT	Tornado Warning	ILX	Edgar	32 min
Apr 20, 12:37 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence, Richland	38 min

Nearby

Tornado Warnings in Illinois, 2000 Every tornado warning in 2000 Tornadoes in 2000

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.