Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 126, NWS Lincoln, IL

December 10, 2021Champaign County, Piatt County, Vermilion County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Dec 10, 2021, 9:33 PM CST for Champaign County, Piatt County, Vermilion County, Illinois. It was in force for 42 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Dec 10, 2021, 9:33 PM CST (03:33 UTC)
Expired: Dec 10, 2021, 10:15 PM CST
In force: 42 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Champaign County, IL, Piatt County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 99 km from the middle of the area, began a volume at 03:32 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.

What was reported inside it

Time	Report	Where	Remark
Dec 10, 10:10 PM CST	TSTM WND DMG	Ogden, IL	MACHINE SHED DESTROYED.
Dec 10, 10:16 PM CST	TSTM WND GST 65	Sidney, IL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Dec 10, 7:47 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.6 hours before the alert went out and 38 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: 119 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 662 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 357 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

042 
WUUS53 KILX 110333
SVRILX
ILC019-147-183-110415-
/O.NEW.KILX.SV.W.0126.211211T0333Z-211211T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
933 PM CST Fri Dec 10 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Eastern Piatt County in central Illinois...
  Northwestern Vermilion County in east central Illinois...
  Champaign County in east central Illinois...

* Until 1015 PM CST.

* At 933 PM CST, severe thunderstorms were located along a line
  extending from near Fisher to near Bement, moving northeast at 75
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Rantoul around 940 PM CST.
  Bondville and Seymour around 945 PM CST.
  Champaign, Savoy, Tolono and Rankin around 950 PM CST.

Other locations in the path of these severe thunderstorms include
Urbana, Philo, Sidney, St. Joseph, Ogden and Potomac.

This includes the following highways...
 Interstate 57 between mile markers 222 and 257.
 Interstate 72 between mile markers 165 and 182.
 Interstate 74 between mile markers 164 and 200.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 AM CST for central and
east central Illinois.

For your protection move to an interior room on the lowest floor of a
building.

A Tornado Watch remains in effect until 200 AM CST for central and
east central Illinois.

&&

LAT...LON 4001 8798 3984 8865 4028 8853 4028 8846
      4040 8846 4040 8794 4049 8793 4049 8763
TIME...MOT...LOC 0333Z 243DEG 67KT 4038 8829 3992 8862 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Shimon

1 follow-up statement

147 
WWUS53 KILX 110403
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1003 PM CST Fri Dec 10 2021

ILC147-110413-
/O.CAN.KILX.SV.W.0126.000000T0000Z-211211T0415Z/
Piatt-
1003 PM CST Fri Dec 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PIATT COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 200 AM CST for east central
Illinois.

LAT...LON 4001 8798 3991 8844 4039 8820 4040 8794
      4049 8793 4049 8763
TIME...MOT...LOC 0403Z 250DEG 45KT 4038 8797 4000 8824 

$$

ILC019-183-110415-
/O.CON.KILX.SV.W.0126.000000T0000Z-211211T0415Z/
Vermilion-Champaign-
1003 PM CST Fri Dec 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CST
FOR NORTHWESTERN VERMILION AND CENTRAL CHAMPAIGN COUNTIES...

At 1003 PM CST, severe thunderstorms were located along a line
extending from near Gifford to Tolono, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
  Potomac, Rankin, St. Joseph, Homer, Hoopeston and Ogden.

This includes the following highways...
 Interstate 57 between mile markers 223 and 256.
 Interstate 72 between mile markers 181 and 182.
 Interstate 74 between mile markers 177 and 200.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 AM CST for east central
Illinois.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4001 8798 3991 8844 4039 8820 4040 8794
      4049 8793 4049 8763
TIME...MOT...LOC 0403Z 250DEG 45KT 4038 8797 4000 8824 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Shimon

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 10, 7:15 PM CST	Tornado Warning	ILX	Cass, Morgan, Scott	45 min
Dec 10, 7:54 PM CST	Tornado Warning Tornado observed	ILX	Cass, Mason, Menard	40 min
Dec 10, 8:05 PM CST	Tornado Warning	ILX	Mason, Tazewell	40 min
Dec 10, 8:20 PM CST	Severe Thunderstorm Warning	ILX	Christian, Sangamon	40 min
Dec 10, 8:28 PM CST	Tornado Warning	ILX	Logan, Mason, Tazewell	32 min
Dec 10, 8:32 PM CST	Severe Thunderstorm Warning	ILX	Logan, Sangamon	28 min
Dec 10, 8:38 PM CST	Tornado Warning	ILX	McLean, Woodford	22 min
Dec 10, 8:50 PM CST	Tornado Warning	ILX	McLean	12 min
Dec 10, 8:58 PM CST	Severe Thunderstorm Warning	ILX	DeWitt, McLean, Macon, Moultrie, Piatt, Sangamon	47 min
Dec 10, 9:09 PM CST	Severe Thunderstorm Warning	ILX	Christian, Macon, Moultrie, Piatt, Shelby	66 min
Dec 10, 9:23 PM CST	Tornado Warning Tornado observed	ILX	Shelby	36 min
Dec 10, 9:51 PM CST	Severe Thunderstorm Warning	ILX	Champaign, Coles, Cumberland, Douglas, Moultrie, Piatt and 1 more	54 min
Dec 10, 9:55 PM CST	Tornado Warning	ILX	Coles, Douglas, Moultrie	19 min
Dec 10, 9:58 PM CST	Tornado Warning Tornado observed	ILX	Coles, Douglas, Moultrie	32 min
Dec 10, 10:24 PM CST	Severe Thunderstorm Warning	ILX	Champaign, Clark, Coles, Douglas, Edgar, Vermilion	35 min
Dec 10, 10:26 PM CST	Tornado Warning Tornado observed	ILX	Coles, Douglas, Edgar, Vermilion	19 min
Dec 10, 10:56 PM CST	Severe Thunderstorm Warning	ILX	Coles, Cumberland, Effingham, Jasper, Moultrie, Shelby	49 min
Dec 10, 11:40 PM CST	Severe Thunderstorm Warning	ILX	Clark, Coles, Crawford, Cumberland, Edgar, Effingham and 2 more	65 min
Dec 11, 12:50 AM CST	Special Weather Statement	ILX	Lawrence	40 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.