Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 46, NWS Lincoln, IL

April 20, 2000Logan County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 20, 2000, 8:31 AM CDT for Logan County, Illinois. It was in force for 44 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, 8:31 AM CDT (13:31 UTC)
Expired: Apr 20, 2000, 9:15 AM CDT
In force: 44 min
Issued by: NWS Lincoln, IL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Logan County, IL

What was reported inside it

Time	Report	Where	Remark
Apr 20, 9:00 AM CDT	Tornado F0	Lincoln, IL	A tornado touched down briefly in a field 4 miles southwest of Lincoln. No damage was reported.

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, 1.5 hours before the alert went out and 68 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 
WUUS53 KILX 201332
SVRSPI
ILC107-201415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
831 AM CDT THU APR 20 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LOGAN COUNTY IN CENTRAL ILLINOIS

* UNTIL 915 AM CDT

* AT 831 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LINCOLN...MOVING NORTHEAST AT 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LINCOLN
  ATLANTA

LARGE HAIL IN EXCESS OF 2 INCHES WILL ACCOMPANY THIS DANGEROUS STORM.
MOVE INDOORS AND STAY AWAY FROM WINDOWS. ABANDON CARS AND MOBILE
HOMES IF YOU ARE IN THE WARNED AREA.

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

LAT...LON 4016 8955 4004 8941 4027 8916 4031 8931

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, 8:37 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, 9:06 AM CDT	Tornado Warning	ILX	DeWitt, Logan, Macon	39 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

Severe Thunderstorm Warnings in Illinois, 2000 Every severe thunderstorm warning 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.