Alert archive / Illinois / Tornado Warnings in 2021

Tornado Warning 33, NWS Lincoln, IL

July 10, 2021Logan County, Mason County, Menard County, Illinois

NWS Lincoln, IL issued this tornado warning at Jul 10, 2021, 3:38 PM CDT for Logan County, Mason County, Menard County, Illinois. It was in force for 37 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: Jul 10, 2021, 3:38 PM CDT (20:38 UTC)
Expired: Jul 10, 2021, 4:15 PM CDT
In force: 37 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Logan County, IL, Mason County, IL, Menard County, IL

The radar

The Lincoln radar (KILX), 34 km from the middle of the area, began a volume at 20:41 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, 8.6 hours before the alert went out and 97 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.

111 
WFUS53 KILX 102038
TORILX
ILC107-125-129-102115-
/O.NEW.KILX.TO.W.0033.210710T2038Z-210710T2115Z/

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

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Northeastern Menard County in central Illinois...
  West central Logan County in central Illinois...
  Southeastern Mason County in central Illinois...

* Until 415 PM CDT.
    
* At 337 PM CDT, a severe thunderstorm capable of producing a 
  tornado was located between Atterberry and Greenview, 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.

* This dangerous storm will be near...
  Greenview around 350 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Mason City, Middletown, and New Holland.

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 4004 8985 4013 8991 4031 8960 4011 8947
TIME...MOT...LOC 2037Z 243DEG 19KT 4010 8984 

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

$$

Barnes

1 follow-up statement

725 
WWUS53 KILX 102107
SVSILX

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

ILC107-125-129-102117-
/O.EXP.KILX.TO.W.0033.000000T0000Z-210710T2115Z/
Menard-Logan-Mason-
407 PM CDT Sat Jul 10 2021

...THE TORNADO WARNING FOR NORTHEASTERN MENARD...WEST CENTRAL LOGAN
AND SOUTHEASTERN MASON COUNTIES WILL EXPIRE AT 415 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 4004 8985 4013 8991 4031 8960 4011 8947
TIME...MOT...LOC 2107Z 243DEG 19KT 4017 8966 

$$

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, 2:08 PM CDT	Tornado Warning	ILX	Cass, Mason, Morgan	52 min
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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.