Alert archive / Illinois / Special Weather Statements in 2021

Special Weather Statement, NWS Lincoln, IL

October 11, 2021Champaign County, Douglas County, Vermilion County, Illinois

NWS Lincoln, IL issued this special weather statement at Oct 11, 2021, 6:52 PM CDT for Champaign County, Douglas County, Vermilion County, Illinois. It was in force for 83 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
Oct 11, 2021, 6:52 PM CDT (23:52 UTC)
Expired
Oct 11, 2021, 8:15 PM CDT
In force
83 min
Issued by
NWS Lincoln, IL
Hail
0.00 in
Wind
50

Counties Champaign County, IL, Douglas County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 113 km from the middle of the area, began a volume at 23:52 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, 11.9 hours before the alert went out and 51 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 2021-10-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 287 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2021-10-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 square meters per square second.19395878Sfc1 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
287 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
867 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
230 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

543 
WWUS83 KILX 112352
SPSILX

Special Weather Statement
National Weather Service Lincoln IL
652 PM CDT Mon Oct 11 2021
 
ILZ045-046-055>057-120115-
Douglas-Coles-Vermilion-Champaign-Edgar-
652 PM CDT Mon Oct 11 2021

...Strong thunderstorms will impact portions of northeastern Coles,
northern Edgar, Vermilion, eastern Champaign and eastern Douglas
Counties through 815 PM CDT...

At 652 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Rantoul to near Sidney to near Camargo.
Movement was east at 25 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Strong thunderstorms will be near...
  Sidney around 655 PM CDT.
  St. Joseph and Gifford around 700 PM CDT.
  Homer and Ogden around 710 PM CDT.

Other locations in the path of these storms include Newman, Rankin,
Fithian, Broadlands, Potomac, Fairmount, Brocton, Muncie, Oakwood,
Hume, Catlin and Sidell.

This includes the following highways...
 Interstate 57 between mile markers 204 and 218, and between mile
markers 243 and 257.
 Interstate 74 between mile markers 183 and 220.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

A Tornado Watch remains in effect until 900 PM CDT for east central
Illinois.

&&

LAT...LON 3968 8832 4004 8823 4040 8822 4040 8794
      4049 8793 4049 8753 3969 8754
TIME...MOT...LOC 2352Z 260DEG 22KT 4036 8810 4007 8810 3977 8819 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

$$

Shimon

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 12:00 PM CDTSpecial Weather StatementILXMorgan30 min
Oct 11, 12:55 PM CDTSpecial Weather StatementILXSangamon35 min
Oct 11, 2:08 PM CDTSpecial Weather StatementILXSchuyler, Scott37 min
Oct 11, 2:27 PM CDTSpecial Weather StatementILXCrawford, Lawrence, Richland33 min
Oct 11, 2:50 PM CDTTornado Warning Tornado observedILXMorgan25 min
Oct 11, 3:12 PM CDTTornado WarningILXMorgan, Sangamon33 min
Oct 11, 3:32 PM CDTTornado Warning Tornado observedILXCass, Menard, Morgan, Sangamon30 min
Oct 11, 3:50 PM CDTTornado Warning Tornado observedILXFulton, Mason, Tazewell25 min
Oct 11, 4:21 PM CDTTornado WarningILXLogan, Mason24 min
Oct 11, 4:47 PM CDTTornado Warning Tornado observedILXMarshall, Woodford28 min
Oct 11, 4:56 PM CDTSevere Thunderstorm WarningILXDeWitt, Logan, Macon, Piatt49 min
Oct 11, 5:03 PM CDTSevere Thunderstorm WarningILXDeWitt, Logan, McLean, Macon, Piatt42 min
Oct 11, 5:14 PM CDTSevere Thunderstorm WarningILXMcLean, Woodford61 min
Oct 11, 5:38 PM CDTTornado WarningILXWoodford20 min
Oct 11, 5:42 PM CDTSevere Thunderstorm WarningILXChampaign, DeWitt, Douglas, McLean, Macon, Piatt63 min

Nearby

Special Weather Statements in Illinois, 2021Every special weather statement in 2021

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.