Alert archive / Illinois / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 21, NWS Lincoln, IL

April 8, 2020Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 8, 2020, 6:08 PM CDT for Champaign County, Vermilion County, Illinois. It was in force for 52 min. 11 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: Apr 8, 2020, 6:08 PM CDT (23:08 UTC)
Expired: Apr 8, 2020, 7:00 PM CDT
In force: 52 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Champaign County, IL, Vermilion County, IL

The radar

The Indianapolis radar (KIND), 126 km from the middle of the area, began a volume at 23:09 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
Apr 8, 6:12 PM CDT	TSTM WND GST 69	2 Se Urbana, IL	.
Apr 8, 6:12 PM CDT	TSTM WND GST 69	2 Se Urbana, IL
Apr 8, 6:30 PM CDT	TSTM WND GST 60	Danville, IL
Apr 8, 6:32 PM CDT	TSTM WND DMG	2 E Danville, IL	REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF.
Apr 8, 6:33 PM CDT	TSTM WND DMG	Danville, IL	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM DANVILLE. COUNTY EMERGENCY MANAGER REPORTED THAT LAW ENFORCEMENT REPORTED TREE DOWN IN DANVILLE ON BOWMAN AND MAY STREET.
Apr 8, 6:33 PM CDT	TSTM WND DMG	Danville, IL	COUNTY EMERGENCY MANAGER REPORTED THAT LAW ENFORCEMENT REPORTED TREE DOWN IN DANVILLE ON BOWMAN AND MAY STREET.
Apr 8, 6:34 PM CDT	TSTM WND DMG	Danville, IL	MULTIPLE REPORTS OF ROOFS BEING BLOWN OFF BUILDINGS IN DANVILLE, ON BENSYL AND EMERSON AND 100 BLOCK OF NORTH WALNUT.
Apr 8, 6:40 PM CDT	TSTM WND DMG	Oakwood, IL	WOODEN FENCE BLOWN OVER. TIME ESTIMATED.
Apr 8, 6:50 PM CDT	TSTM WND DMG	Westville, IL	SEMI BLOWN OVER ON HIGHWAY 1 ON SOUTH END OF TOWN.
Apr 8, 6:50 PM CDT	TSTM WND GST 61	4 S Danville, IL	WIND GUST RECORDED AT COUNTY EMERGENCY MANAGEMENT OFFICE.
Apr 8, 6:51 PM CDT	NON-TSTM WND GST 57	Willard Airport, IL	GRADIENT WINDS BEHIND STORMS.

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
Apr 8, 3:08 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.1 hours before the alert went out and 78 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: 21 J/kg
Mixed-layer CIN: -291 J/kg
Mixed-layer LCL: 1264 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -105 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

629 
WUUS53 KILX 082308
SVRILX
ILC019-183-090000-
/O.NEW.KILX.SV.W.0021.200408T2308Z-200409T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
608 PM CDT Wed Apr 8 2020

The National Weather Service in Lincoln has issued a

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

* Until 700 PM CDT.

* At 608 PM CDT, a severe thunderstorm was located near St. Joseph,
  or 9 miles southeast of Rantoul, moving east at 55 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Champaign, Danville, Rantoul, Urbana, Savoy, St. Joseph,
  Georgetown, Tolono, Westville, Tilton, Catlin, Oakwood, Philo,
  Sidney, Homer, Ridge Farm, Ogden, Fairmount, Sidell and Fithian.

This includes Interstate 74 between mile markers 183 and 220.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3988 8757 3987 8757 3987 8761 3988 8762
      3988 8768 4002 8831 4030 8812 4027 8753
      3988 8754
TIME...MOT...LOC 2308Z 276DEG 47KT 4020 8802 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

37

2 follow-up statements

822 
WWUS53 KILX 082338
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
638 PM CDT Wed Apr 8 2020

ILC019-082347-
/O.CAN.KILX.SV.W.0021.000000T0000Z-200409T0000Z/
Champaign-
638 PM CDT Wed Apr 8 2020

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHAMPAIGN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

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

LAT...LON 3988 8757 3987 8757 3987 8761 3988 8762
      3988 8768 3994 8791 4027 8777 4027 8753
      3988 8754
TIME...MOT...LOC 2337Z 276DEG 47KT 4016 8751 

$$

ILC183-090000-
/O.CON.KILX.SV.W.0021.000000T0000Z-200409T0000Z/
Vermilion-
638 PM CDT Wed Apr 8 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR SOUTHERN VERMILION COUNTY...

At 637 PM CDT, a severe thunderstorm was located near Danville,
moving east at 55 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Danville, Georgetown, Westville, Tilton, Catlin, Oakwood, Ridge Farm,
Fairmount, Sidell, Belgium, Bismarck, Indianola, Jamaica, Vermilion
County Airport and Kickapoo State Park.

This includes Interstate 74 between mile markers 204 and 220.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3988 8757 3987 8757 3987 8761 3988 8762
      3988 8768 3994 8791 4027 8777 4027 8753
      3988 8754
TIME...MOT...LOC 2337Z 276DEG 47KT 4016 8751 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

37

243 
WWUS53 KILX 082351
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
651 PM CDT Wed Apr 8 2020

ILC183-090001-
/O.EXP.KILX.SV.W.0021.000000T0000Z-200409T0000Z/
Vermilion-
651 PM CDT Wed Apr 8 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN VERMILION COUNTY WILL
EXPIRE AT 700 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

LAT...LON 3988 8757 3987 8757 3987 8761 3988 8762
      3988 8768 3994 8791 4027 8777 4027 8753
      3988 8754
TIME...MOT...LOC 2351Z 276DEG 47KT 4014 8729 

$$

37

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 10:48 PM CDT	Severe Thunderstorm Warning	ILX	Knox	24 min
Apr 8, 3:53 PM CDT	Severe Thunderstorm Warning	ILX	Knox, Peoria, Stark	52 min
Apr 8, 4:02 PM CDT	Severe Thunderstorm Warning	ILX	Fulton	43 min
Apr 8, 4:08 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox, Peoria	30 min
Apr 8, 4:34 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Mason, Menard, Morgan, Sangamon	41 min
Apr 8, 4:40 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Logan, Mason, Menard, Tazewell	50 min
Apr 8, 5:07 PM CDT	Special Weather Statement	ILX	McLean	38 min
Apr 8, 5:10 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Logan, Macon, Menard, Sangamon	50 min
Apr 8, 5:16 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, McLean, Macon, Menard, Piatt	44 min
Apr 8, 5:27 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Menard, Morgan, Sangamon	33 min
Apr 8, 5:29 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Morgan, Sangamon, Scott	31 min
Apr 8, 5:56 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Christian, Douglas, Macon, Moultrie, Piatt and 2 more	49 min
Apr 8, 6:33 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Clay, Coles, Crawford, Cumberland, Douglas and 5 more	42 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2020 Every severe thunderstorm warning in 2020

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.