Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 16, NWS Lincoln, IL

October 7, 2018Champaign County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 7, 2018, 5:59 PM CDT for Champaign County, Illinois. It was in force for 18 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: Oct 7, 2018, 5:59 PM CDT (22:59 UTC)
Expired: Oct 7, 2018, 6:17 PM CDT
In force: 18 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Champaign County, IL

The radar

The Lincoln radar (KILX), 93 km from the middle of the area, began a volume at 23:03 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, 11.0 hours before the alert went out and 36 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: 470 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

776 
WFUS53 KILX 072259
TORILX
ILC019-072330-
/O.NEW.KILX.TO.W.0016.181007T2259Z-181007T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
559 PM CDT SUN OCT 7 2018

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  North central Champaign County in east central Illinois...

* Until 630 PM CDT.

* At 559 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Fisher, or 7 miles south of Gibson City, moving
  northeast at 15 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Weather spotters reported funnel cloud.

  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 tornadic thunderstorm will remain over mainly rural areas of
  north central Champaign County.

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 4033 8819 4032 8835 4039 8838 4040 8837
      4040 8818
TIME...MOT...LOC 2259Z 244DEG 12KT 4036 8833 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

SB

1 follow-up statement

631 
WWUS53 KILX 072317
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
617 PM CDT SUN OCT 7 2018

ILC019-072326-
/O.CAN.KILX.TO.W.0016.000000T0000Z-181007T2330Z/
Champaign-
617 PM CDT SUN OCT 7 2018

...THE TORNADO WARNING FOR NORTH CENTRAL CHAMPAIGN COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has 
been cancelled. A Severe thunderstorm, with the possibility of a 
tornado developing, remains in effect for Ford County.

LAT...LON 4033 8819 4032 8835 4039 8838 4040 8837
      4040 8818
TIME...MOT...LOC 2315Z 244DEG 12KT 4039 8826 

$$

SB

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 7, 3:04 PM CDT	Flash Flood Watch	ILX	Fulton, Knox, Marshall, Mason, Peoria, Schuyler and 3 more	12 hr
Oct 7, 3:32 PM CDT	Special Weather Statement	ILX	Sangamon	28 min
Oct 7, 4:11 PM CDT	Special Weather Statement	ILX	Cass, DeWitt, Logan, McLean, Mason, Menard and 3 more	64 min
Oct 7, 4:45 PM CDT	Special Weather Statement	ILX	McLean	45 min
Oct 7, 5:04 PM CDT	Tornado Warning	ILX	DeWitt, McLean, Piatt	26 min
Oct 7, 5:11 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Sangamon	34 min
Oct 7, 5:28 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, McLean	47 min
Oct 7, 5:37 PM CDT	Tornado Warning	ILX	Champaign	23 min
Oct 7, 6:23 PM CDT	Special Weather Statement	ILX	DeWitt	37 min

Nearby

Tornado Warnings in Illinois, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.