Alert archive / Illinois / Tornado Warnings in 2021

Tornado Warning 30, NWS Lincoln, IL

July 10, 2021Cass County, Mason County, Morgan County, Illinois

NWS Lincoln, IL issued this tornado warning at Jul 10, 2021, 2:08 PM CDT for Cass County, Mason County, Morgan County, Illinois. It was in force for 52 min. 3 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: Jul 10, 2021, 2:08 PM CDT (19:08 UTC)
Expired: Jul 10, 2021, 3:00 PM CDT
In force: 52 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Cass County, IL, Mason County, IL, Morgan County, IL

The radar

The Lincoln radar (KILX), 86 km from the middle of the area, began a volume at 19:07 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
Jul 10, 2:31 PM CDT	TORNADO	3 Wnw Virginia, IL	BRIEF TOUCHDOWN IN OPEN AREA.
Jul 10, 2:40 PM CDT	TORNADO	2 N Virginia, IL	BRIEF TOUCHDOWN.
Jul 10, 2:50 PM CDT	TSTM WND DMG	Chandlerville, IL	DELAYED REPORT. TREE BLOWN DOWN ACROSS ROAD.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.1 hours before the alert went out and 147 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: 952 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

592 
WFUS53 KILX 101908
TORILX
ILC017-125-137-102000-
/O.NEW.KILX.TO.W.0030.210710T1908Z-210710T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
208 PM CDT Sat Jul 10 2021

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Southeastern Cass County in west central Illinois...
  Southwestern Mason County in central Illinois...
  North central Morgan County in west central Illinois...

* Until 300 PM CDT.
    
* At 207 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Arenzville, or 8 miles south of Beardstown, moving
  northeast at 25 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Virginia and Chandlerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3985 9041 3991 9045 4007 9016 3990 9006
TIME...MOT...LOC 1907Z 237DEG 20KT 3990 9037 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Barnes

1 follow-up statement

095 
WWUS53 KILX 101923
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
223 PM CDT Sat Jul 10 2021

ILC137-101932-
/O.CAN.KILX.TO.W.0030.000000T0000Z-210710T2000Z/
Morgan-
223 PM CDT Sat Jul 10 2021

...THE TORNADO WARNING FOR NORTH CENTRAL MORGAN COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3990 9035 3995 9038 4007 9016 3994 9008
TIME...MOT...LOC 1922Z 235DEG 18KT 3994 9032 

$$

ILC017-125-102000-
/O.CON.KILX.TO.W.0030.000000T0000Z-210710T2000Z/
Cass-Mason-
223 PM CDT Sat Jul 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 PM CDT FOR CENTRAL
CASS AND SOUTHWESTERN MASON COUNTIES...
    
At 222 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Bluff Springs, moving northeast at 20 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Virginia and Chandlerville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3990 9035 3995 9038 4007 9016 3994 9008
TIME...MOT...LOC 1922Z 235DEG 18KT 3994 9032 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Barnes

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 8:03 PM CDT	Severe Thunderstorm Warning	ILX	Schuyler	57 min
Jul 9, 10:50 PM CDT	Special Weather Statement	ILX	Sangamon	25 min
Jul 9, 11:11 PM CDT	Areal Flood Advisory	ILX	Sangamon	115 min
Jul 9, 11:43 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Moultrie, Shelby	47 min
Jul 10, 1:18 AM CDT	Special Weather Statement	ILX	Clay, Richland	57 min
Jul 10, 9:27 AM CDT	River Flood Warning	ILX	Clay, Richland	11 days
Jul 10, 2:45 PM CDT	Tornado Warning	ILX	Cass, Mason, Menard	60 min
Jul 10, 2:53 PM CDT	Tornado Warning	ILX	Fulton, Mason	52 min
Jul 10, 3:38 PM CDT	Tornado Warning	ILX	Logan, Mason, Menard	37 min
Jul 10, 6:18 PM CDT	Flash Flood Warning	ILX	Clay	3 hr
Jul 10, 6:22 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Richland	53 min

Nearby

Tornado Warnings in Illinois, 2021 Every tornado warning in 2021 Tornadoes 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.