Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 6, NWS Lincoln, IL

June 19, 2018Knox County, Stark County, Illinois

NWS Lincoln, IL issued this tornado warning at Jun 19, 2018, 3:14 PM CDT for Knox County, Stark County, Illinois. It was in force for 20 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: Jun 19, 2018, 3:14 PM CDT (20:14 UTC)
Expired: Jun 19, 2018, 3:34 PM CDT
In force: 20 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Knox County, IL, Stark County, IL

The radar

The Quad Cities radar (KDVN), 86 km from the middle of the area, began a volume at 20:18 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
Jun 19, 3:15 PM CDT	TSTM WND DMG	West Jersey, IL	ROAD SIGN BENT, CORN FLATTED. RELAYED VIA WMBD-TV.

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

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.2 hours before the alert went out and 83 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: 762 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 7 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

921 
WFUS53 KILX 192014
TORILX
ILC095-175-192045-
/O.NEW.KILX.TO.W.0006.180619T2014Z-180619T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
314 PM CDT TUE JUN 19 2018

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Southwestern Stark County in north central Illinois...
  East central Knox County in west central Illinois...

* Until 345 PM CDT
    
* At 313 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Elmore, or 17 miles south of Kewanee, moving east
  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...
  La Fayette around 325 PM CDT. 
  West Jersey around 330 PM CDT. 
  Toulon around 340 PM CDT. 
  Wyoming around 345 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Duncan.

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 4112 8978 4098 8975 4097 8992 4097 8998
      4096 8999 4096 9004 4111 9003
TIME...MOT...LOC 2013Z 254DEG 17KT 4100 9001 

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

$$

Miller

1 follow-up statement

258 
WWUS53 KILX 192034
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
334 PM CDT TUE JUN 19 2018

ILC095-175-192043-
/O.CAN.KILX.TO.W.0006.000000T0000Z-180619T2045Z/
Stark-Knox-
334 PM CDT TUE JUN 19 2018

...THE TORNADO WARNING FOR SOUTHWESTERN STARK AND EAST CENTRAL KNOX
COUNTIES IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been 
cancelled. However gusty winds are still possible with this 
thunderstorm in southern Stark County.

Remember, a Severe Thunderstorm Warning still remains in effect for 
southern Stark County until 415 pm CDT.

LAT...LON 4112 8978 4098 8975 4097 8992 4097 8998
      4096 8999 4096 9004 4111 9003
TIME...MOT...LOC 2031Z 254DEG 17KT 4103 8989 

$$

Miller

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 2:58 PM CDT	Severe Thunderstorm Warning	ILX	Stark	47 min
Jun 19, 3:32 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Peoria, Stark	43 min
Jun 19, 4:07 PM CDT	Special Weather Statement	ILX	Marshall, Woodford	38 min
Jun 19, 5:39 PM CDT	Special Weather Statement	ILX	Christian, Macon, Piatt	51 min
Jun 19, 5:56 PM CDT	Special Weather Statement	ILX	Champaign	64 min
Jun 19, 6:32 PM CDT	Special Weather Statement	ILX	Champaign, Douglas, Moultrie, Shelby, Vermilion	43 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.