Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 17, NWS Lincoln, IL

December 1, 2018Cass County, Morgan County, Scott County, Illinois

NWS Lincoln, IL issued this tornado warning at Dec 1, 2018, 2:49 PM CST for Cass County, Morgan County, Scott County, Illinois. It was in force for 41 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
Dec 1, 2018, 2:49 PM CST (20:49 UTC)
Expired
Dec 1, 2018, 3:30 PM CST
In force
41 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Cass County, IL, Morgan County, IL, Scott County, IL

The radar

The Lincoln radar (KILX), 109 km from the middle of the area, began a volume at 20:51 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

TimeReportWhereRemark
Dec 1, 3:03 PM CSTFUNNEL CLOUDMeredosia, IL

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

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

Lincoln, IL (KILX), launched 12:00Z, 8.8 hours before the alert went out and 170 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 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.LCLEL10008507005003002001001 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 12:00Z on 2018-12-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 529 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
430 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
529 m²/s²
0-3 km storm-relative helicity
658 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

493 
WFUS53 KILX 012049
TORILX
ILC017-137-171-012130-
/O.NEW.KILX.TO.W.0017.181201T2049Z-181201T2130Z/

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

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Northwestern Scott County in west central Illinois...
  Southwestern Cass County in west central Illinois...
  Northwestern Morgan County in west central Illinois...

* Until 330 PM CST.
    
* At 249 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Naples, or 13 miles northwest of Winchester,
  moving northeast at 35 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...
  Meredosia around 255 PM CST.
  Beardstown around 325 PM CST.

Other locations impacted by this tornadic thunderstorm include La
Grange.

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 3983 9057 3987 9059 3989 9058 3990 9056
      3992 9054 3994 9054 3998 9051 3998 9040
      3975 9060 3976 9061 3978 9061
TIME...MOT...LOC 2049Z 203DEG 29KT 3978 9062 

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

$$

Barnes
2 follow-up statements
487 
WWUS53 KILX 012104
SVSILX

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

ILC171-012114-
/O.CAN.KILX.TO.W.0017.000000T0000Z-181201T2130Z/
Scott-
304 PM CST SAT DEC 1 2018

...THE TORNADO WARNING FOR NORTHWESTERN SCOTT COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 PM CST for west central
Illinois.

LAT...LON 3987 9059 3989 9058 3990 9056 3992 9054
      3994 9054 3998 9051 3998 9040 3984 9052
      3986 9058
TIME...MOT...LOC 2104Z 206DEG 28KT 3988 9055 

$$

ILC017-137-012130-
/O.CON.KILX.TO.W.0017.000000T0000Z-181201T2130Z/
Cass-Morgan-
304 PM CST SAT DEC 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CST FOR
SOUTHWESTERN CASS AND NORTHWESTERN MORGAN COUNTIES...
    
At 304 PM CST, a severe thunderstorm capable of producing a tornado
was located near Meredosia, or 10 miles southwest of Beardstown,
moving northeast at 30 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...
  Beardstown around 325 PM CST.

Other locations impacted by this tornadic thunderstorm include La
Grange.

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 3987 9059 3989 9058 3990 9056 3992 9054
      3994 9054 3998 9051 3998 9040 3984 9052
      3986 9058
TIME...MOT...LOC 2104Z 206DEG 28KT 3988 9055 

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

$$

Barnes
766 
WWUS53 KILX 012115
SVSILX

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

ILC137-012124-
/O.CAN.KILX.TO.W.0017.000000T0000Z-181201T2130Z/
Morgan-
315 PM CST SAT DEC 1 2018

...THE TORNADO WARNING FOR NORTHWESTERN MORGAN COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 700 PM CST for west central
Illinois.

LAT...LON 3990 9056 3992 9054 3994 9054 3998 9051
      3998 9040 3989 9048
TIME...MOT...LOC 2114Z 207DEG 25KT 3993 9050 

$$

ILC017-012130-
/O.CON.KILX.TO.W.0017.000000T0000Z-181201T2130Z/
Cass-
315 PM CST SAT DEC 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CST FOR
SOUTHWESTERN CASS COUNTY...
    
At 314 PM CST, a severe thunderstorm capable of producing a tornado
was located east of La Grange, moving northeast at 30 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...
  Beardstown around 330 PM CST.

Other locations impacted by this tornadic thunderstorm include La
Grange.

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 3990 9056 3992 9054 3994 9054 3998 9051
      3998 9040 3989 9048
TIME...MOT...LOC 2114Z 207DEG 25KT 3993 9050 

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

$$

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, 2:58 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, 3:57 PM CSTTornado WarningILXKnox, Peoria38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.