Alert archive / Illinois / Tornado Warnings in 2023

Tornado Warning 9, NWS Lincoln, IL

January 3, 2023Macon County, Piatt County, Illinois

NWS Lincoln, IL issued this tornado warning at Jan 3, 2023, 6:19 PM CST for Macon County, Piatt County, Illinois. It was in force for 26 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
Jan 3, 2023, 6:19 PM CST (00:19 UTC)
Expired
Jan 3, 2023, 6:45 PM CST
In force
26 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Macon County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 56 km from the middle of the area, began a volume at 00:22 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 00:00Z, 0.3 hours before the alert went out and 20 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2023-01-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 438 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2023-01-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
438 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
860 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted.

731 
WFUS53 KILX 040019
TORILX
ILC115-147-040045-
/O.NEW.KILX.TO.W.0009.230104T0019Z-230104T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
619 PM CST Tue Jan 3 2023

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Central Piatt County in central Illinois...
  Eastern Macon County in central Illinois...

* Until 645 PM CST.
    
* At 618 PM CST, a severe thunderstorm capable of producing a 
  tornado was located near Argenta in northeast Macon County, moving 
  northeast at 35 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...
  Monticello and De Land.

This includes Interstate 72 between mile markers 150 and 168.
 
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 3992 8881 3996 8884 4016 8862 4001 8847
TIME...MOT...LOC 0018Z 232DEG 29KT 3996 8879 

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

$$

37
2 follow-up statements
475 
WWUS53 KILX 040029
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
629 PM CST Tue Jan 3 2023

ILC115-040037-
/O.CAN.KILX.TO.W.0009.000000T0000Z-230104T0045Z/
Macon-
629 PM CST Tue Jan 3 2023

...THE TORNADO WARNING FOR EASTERN MACON 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 3996 8873 4002 8874 4016 8862 4001 8847
TIME...MOT...LOC 0027Z 232DEG 29KT 4001 8871 

$$

ILC147-040045-
/O.CON.KILX.TO.W.0009.000000T0000Z-230104T0045Z/
Piatt-
629 PM CST Tue Jan 3 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CST FOR CENTRAL
PIATT COUNTY...
    
At 627 PM CST, a severe thunderstorm capable of producing a tornado 
was located near Cisco, or 7 miles west of Monticello, moving 
northeast at 35 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...
Monticello, De Land and Cisco. 

This includes Interstate 72 between mile markers 157 and 168.
 
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 3996 8873 4002 8874 4016 8862 4001 8847
TIME...MOT...LOC 0027Z 232DEG 29KT 4001 8871 

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

$$

37
334 
WWUS53 KILX 040038
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
638 PM CST Tue Jan 3 2023

ILC147-040048-
/O.EXP.KILX.TO.W.0009.000000T0000Z-230104T0045Z/
Piatt-
638 PM CST Tue Jan 3 2023

...THE TORNADO WARNING FOR CENTRAL PIATT COUNTY WILL EXPIRE AT 645 PM
CST...
                
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.

LAT...LON 3996 8873 4002 8874 4016 8862 4001 8847
TIME...MOT...LOC 0038Z 232DEG 29KT 4006 8863 

$$

37

Nearby

Tornado Warnings in Illinois, 2023Every tornado warning in 2023Tornadoes in 2023

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.