Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 21, NWS Lincoln, IL

December 1, 2018Knox County, Peoria County, Illinois

NWS Lincoln, IL issued this tornado warning at Dec 1, 2018, 3:57 PM CST for Knox County, Peoria County, Illinois. It was in force for 38 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
Dec 1, 2018, 3:57 PM CST (21:57 UTC)
Expired
Dec 1, 2018, 4:35 PM CST
In force
38 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Knox County, IL, Peoria County, IL

The radar

The Lincoln radar (KILX), 93 km from the middle of the area, began a volume at 21:59 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 1, 2:16 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.0 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-pSkew-T log-p diagram, Davenport, at 12:00Z on 2018-12-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Davenport, at 12:00Z on 2018-12-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 269 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
809 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
269 m²/s²
0-3 km storm-relative helicity
328 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

807 
WFUS53 KILX 012157
TORILX
ILC095-143-012245-
/O.NEW.KILX.TO.W.0021.181201T2157Z-181201T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
357 PM CST SAT DEC 1 2018

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Southeastern Knox County in west central Illinois...
  Northwestern Peoria County in central Illinois...

* Until 445 PM CST.
    
* At 357 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Yates City, or 13 miles north of Canton, moving
  north at 30 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...
  Yates City around 400 PM CST.
  Elmwood around 405 PM CST.
  Brimfield around 415 PM CST.
  Williamsfield and Laura around 420 PM CST.
  Elmore around 425 PM CST.

Other locations impacted by this tornadic thunderstorm include
Dahinda and Monica.

This includes Interstate 74 between mile markers 61 and 75.
 
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 4097 8975 4071 8992 4071 9011 4072 9013
      4098 9011
TIME...MOT...LOC 2157Z 195DEG 26KT 4075 9003 

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

$$

Barnes
2 follow-up statements
954 
WWUS53 KILX 012211
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
411 PM CST SAT DEC 1 2018

ILC095-143-012245-
/O.CON.KILX.TO.W.0021.000000T0000Z-181201T2245Z/
Knox-Peoria-
411 PM CST SAT DEC 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CST FOR
SOUTHEASTERN KNOX AND NORTHWESTERN PEORIA COUNTIES...
    
At 410 PM CST, a severe thunderstorm capable of producing a tornado
was located over Yates City, or 17 miles north of Canton, moving
north at 25 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...
  Brimfield around 420 PM CST.
  Williamsfield and Laura around 430 PM CST.
  Elmore around 435 PM CST.

Other locations impacted by this tornadic thunderstorm include
Dahinda and Monica.

This includes Interstate 74 between mile markers 61 and 76.
 
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 4078 8987 4079 9006 4079 9012 4098 9011
      4097 8975
TIME...MOT...LOC 2210Z 199DEG 21KT 4081 8999 

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

$$

Barnes
566 
WWUS53 KILX 012235
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
435 PM CST SAT DEC 1 2018

ILC095-143-012244-
/O.CAN.KILX.TO.W.0021.000000T0000Z-181201T2245Z/
Knox-Peoria-
435 PM CST SAT DEC 1 2018

...THE TORNADO WARNING FOR SOUTHEASTERN KNOX AND NORTHWESTERN PEORIA
COUNTIES 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 Tornado Watch remains in effect until 700 PM CST for central and
west central Illinois.

LAT...LON 4078 8987 4079 9006 4079 9012 4098 9011
      4097 8975
TIME...MOT...LOC 2232Z 195DEG 26KT 4098 8993 

$$

Barnes

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 30, 8:09 PM CSTDense Fog AdvisoryILXChampaign, DeWitt, McLean, Piatt, Vermilion, Woodford8 hr
Dec 1, 9:45 AM CSTRiver Flood WarningILXFulton, Knox3 days
Dec 1, 12:39 PM CSTDense Fog AdvisoryILXFulton, Knox, Stark4 hr
Dec 1, 2:21 PM CSTSevere Thunderstorm WarningILXSchuyler39 min
Dec 1, 2:49 PM CSTTornado WarningILXCass, Morgan, Scott41 min
Dec 1, 2:58 PM CSTSevere Thunderstorm WarningILXSchuyler14 min
Dec 1, 3:04 PM CSTTornado WarningILXSchuyler11 min
Dec 1, 3:24 PM CSTTornado WarningILXCass, Mason, Schuyler51 min
Dec 1, 3:47 PM CSTTornado WarningILXFulton, Mason, Schuyler43 min
Dec 1, 4:22 PM CSTTornado WarningILXFulton, Mason, Peoria, Tazewell38 min
Dec 1, 4:37 PM CSTTornado WarningILXChristian38 min
Dec 1, 4:39 PM CSTTornado WarningILXChristian51 min
Dec 1, 4:42 PM CSTTornado WarningILXMason48 min
Dec 1, 4:53 PM CSTTornado WarningILXFulton, Peoria37 min
Dec 1, 5:12 PM CSTTornado WarningILXMason, Tazewell48 min
Dec 1, 5:15 PM CSTSevere Thunderstorm WarningILXLogan, Menard, Sangamon45 min
Dec 1, 5:15 PM CSTTornado Warning EmergencyTornado observedCatastrophic damage threatILXChristian30 min
Dec 1, 5:29 PM CSTSevere Thunderstorm WarningILXPeoria46 min
Dec 1, 5:43 PM CSTTornado Warning Tornado observedConsiderable damage threatILXChristian, Macon32 min
Dec 1, 5:46 PM CSTSevere Thunderstorm WarningILXTazewell44 min
Dec 1, 5:54 PM CSTSevere Thunderstorm WarningILXLogan, Menard51 min

Nearby

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