Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 15, NWS Lincoln, IL

October 7, 2018Champaign County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 7, 2018, 5:37 PM CDT for Champaign County, Illinois. It was in force for 23 min. 1 report 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: Oct 7, 2018, 5:37 PM CDT (22:37 UTC)
Expired: Oct 7, 2018, 6:00 PM CDT
In force: 23 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), 87 km from the middle of the area, began a volume at 22:38 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
Oct 7, 5:55 PM CDT	FUNNEL CLOUD	2 N Fisher, IL

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, 10.6 hours before the alert went out and 31 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.

766 
WFUS53 KILX 072237
TORILX
ILC019-072300-
/O.NEW.KILX.TO.W.0015.181007T2237Z-181007T2300Z/

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

The National Weather Service in Lincoln has issued a

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

* Until 600 PM CDT.
    
* At 537 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Fisher, or 9 miles south of Gibson City, moving
  northeast at 15 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Fisher around 550 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Foosland.

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 4040 8816 4026 8841 4031 8846 4035 8846
      4040 8841
TIME...MOT...LOC 2237Z 226DEG 14KT 4033 8843 

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

$$

SB

1 follow-up statement

065 
WWUS53 KILX 072304
SVSILX

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

ILC019-072314-
/O.EXP.KILX.TO.W.0015.000000T0000Z-181007T2300Z/
Champaign-
604 PM CDT SUN OCT 7 2018

...THE TORNADO WARNING FOR NORTHWESTERN CHAMPAIGN COUNTY HAS
EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.  However heavy 
rain is still possible with this thunderstorm. A tornado warning 
remains in effect for nearby locations.

LAT...LON 4040 8816 4026 8841 4031 8846 4035 8846
      4040 8841
TIME...MOT...LOC 2304Z 226DEG 14KT 4040 8833 

$$

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, 5:59 PM CDT	Tornado Warning	ILX	Champaign	18 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.