Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 271, NWS Lincoln, IL

August 23, 2000McLean County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Aug 23, 2000, 6:54 PM CDT for McLean County, Illinois. It was in force for 66 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
Aug 23, 2000, 6:54 PM CDT (23:54 UTC)
Expired
Aug 23, 2000, 8:00 PM CDT
In force
66 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County McLean County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.9 hours before the alert went out and 43 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 12:00Z on 2000-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1455 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2000-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 309 square meters per square second.193958Sfc1 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
1455 J/kg
Mixed-layer CIN
-172 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
309 m²/s²
0-3 km storm-relative helicity
206 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 232355
SVRSPI
ILC113-240100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
654 PM CDT WED AUG 23 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 800 PM CDT

* AT 653 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM OVER BLOOMINGTON/NORMAL...MOVING SOUTHEAST
  AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BLOOMINGTON/NORMAL
  HEYWORTH
  DOWNS
  LE ROY

THIS STORM HAS PRODUCED STRUCTURAL DAMAGE...LARGE HAIL..FREQUENT 
LIGHTNING...AND VERY HEAVY RAIN. TAKE SHELTER IN A STURDY BUILDING 
AND STAY AWAY FROM WINDOWS.

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

LAT...LON 4055 8893 4%050 8928 4029 8926 4029 8862

HEDGES

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 8:42 PM CDTSevere Thunderstorm WarningILXScott63 min
Aug 22, 9:19 PM CDTSevere Thunderstorm WarningILXMorgan41 min
Aug 22, 10:29 PM CDTSevere Thunderstorm WarningILXChristian31 min
Aug 22, 10:52 PM CDTSevere Thunderstorm WarningILXShelby38 min
Aug 22, 11:48 PM CDTSevere Thunderstorm WarningILXClay, Effingham42 min
Aug 23, 3:07 AM CDTSevere Thunderstorm WarningILXMcLean38 min
Aug 23, 6:00 PM CDTSevere Thunderstorm WarningILXMcLean, Woodford60 min
Aug 23, 6:23 PM CDTSevere Thunderstorm WarningILXTazewell52 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2000Every 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; the sounding from the Mesonet's radiosonde archive.