Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 12, NWS Lincoln, IL

May 3, 20215 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 3, 2021, 4:43 PM CDT for 5 counties in Illinois. It was in force for 47 min. 7 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: May 3, 2021, 4:43 PM CDT (21:43 UTC)
Expired: May 3, 2021, 5:30 PM CDT
In force: 47 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.5 in
Wind: 60.0 mph

Counties Cass County, IL, Menard County, IL, Morgan County, IL, Sangamon County, IL, Schuyler County, IL

The radar

The Lincoln radar (KILX), 91 km from the middle of the area, began a volume at 21:47 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
May 3, 4:55 PM CDT	HAIL 1.5	3 Sse Bluff Springs, IL
May 3, 4:57 PM CDT	TORNADO	3 Ene Arenzville, IL	DELAYED REPORT FOR MAY 3: BASED ON A VIDEO FROM A STORM CHASER, A TORNADO OCCURRED MAINLY IN FIELDS ALONG CRUM ROAD. THE TORNADO CROSSED CRUM ROAD AND LASTED 2-3 MINUTES. THERE WERE NO REPORTS OF DAMAGE TO THE NEARBY FARMSTEADS.
May 3, 5:04 PM CDT	HAIL 1.5	Virginia, IL	RELAYED BY BROADCAST MEDIA. DAMAGE TO CARS.
May 3, 5:05 PM CDT	TORNADO	3 S Virginia, IL	ON GROUND IN OPEN FIELD. DIME SIZED HAIL.
May 3, 5:15 PM CDT	HAIL 1	4 Wsw Newmansville, IL	RELAYED BY ASHLAND FIRE.
May 3, 5:27 PM CDT	TORNADO	2 Wnw Pleasant Plains, IL
May 3, 5:27 PM CDT	TORNADO	2 Wnw Pleasant Plains, IL	CORRECTION TO PREVIOUS REPORT OF TORNADO 3 N ASHLAND.

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
May 3, 2:47 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.7 hours before the alert went out and 153 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 460 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

619 
WUUS53 KILX 032143
SVRILX
ILC017-129-137-167-169-032230-
/O.NEW.KILX.SV.W.0012.210503T2143Z-210503T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
443 PM CDT Mon May 3 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Southwestern Menard County in central Illinois...
  West central Sangamon County in central Illinois...
  Cass County in west central Illinois...
  Southeastern Schuyler County in west central Illinois...
  Northeastern Morgan County in west central Illinois...

* Until 530 PM CDT.

* At 442 PM CDT, a severe thunderstorm was located near Arenzville,
  or near Beardstown, moving east at 35 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Beardstown, Virginia, Ashland, Bluff Springs, Tallula, Arenzville,
  Literberry, Philadelphia, Newmansville, Prentice and Sinclair.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3996 9052 3997 9051 3998 9052 4000 9051
      4006 8993 3975 8993 3988 9055
TIME...MOT...LOC 2142Z 270DEG 32KT 3993 9042 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

37

1 follow-up statement

075 
WWUS53 KILX 032233
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
533 PM CDT Mon May 3 2021

ILC017-129-137-167-169-032242-
/O.EXP.KILX.SV.W.0012.000000T0000Z-210503T2230Z/
Menard-Sangamon-Cass-Schuyler-Morgan-
533 PM CDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MENARD...WEST
CENTRAL SANGAMON...CASS...SOUTHEASTERN SCHUYLER AND NORTHEASTERN
MORGAN COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.  However a severe 
thunderstorm with a confirmed tornado continues to the east of the 
warned area.

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

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Lincoln.

LAT...LON 3996 9052 3997 9051 3998 9052 4000 9051
      4006 8993 3975 8993 3988 9055
TIME...MOT...LOC 2232Z 270DEG 32KT 3993 8986 

$$

37

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 3:31 PM CDT	Special Weather Statement	ILX	Knox	29 min
May 3, 3:59 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Morgan, Schuyler	46 min
May 3, 4:10 PM CDT	Special Weather Statement	ILX	Schuyler	35 min
May 3, 4:30 PM CDT	Special Weather Statement	ILX	Fulton	30 min
May 3, 4:50 PM CDT	Tornado Warning	ILX	Cass, Morgan	25 min
May 3, 5:00 PM CDT	Special Weather Statement	ILX	Mason, Menard	30 min
May 3, 5:08 PM CDT	Tornado Warning	ILX	Cass, Menard, Morgan, Sangamon	37 min
May 3, 5:17 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Logan, Mason, Menard	43 min
May 3, 5:25 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	33 min
May 3, 5:30 PM CDT	Tornado Warning Tornado observed	ILX	Menard, Sangamon	30 min
May 3, 5:52 PM CDT	Tornado Warning	ILX	Logan, Menard, Sangamon	23 min
May 3, 6:02 PM CDT	Special Weather Statement	ILX	Logan	43 min
May 3, 6:16 PM CDT	Tornado Warning Tornado observed	ILX	Christian, Logan, Macon, Sangamon	29 min
May 3, 6:37 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon, Sangamon	53 min
May 3, 6:42 PM CDT	Tornado Warning Tornado observed	ILX	Macon	33 min
May 3, 6:54 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Sangamon	51 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.