Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 14, NWS Lincoln, IL

October 7, 2018DeWitt County, McLean County, Piatt County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 7, 2018, 5:04 PM CDT for DeWitt County, McLean County, Piatt County, Illinois. It was in force for 26 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, 5:04 PM CDT (22:04 UTC)
Expired: Oct 7, 2018, 5:30 PM CDT
In force: 26 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties DeWitt County, IL, McLean County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 68 km from the middle of the area, began a volume at 22:09 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, 10.1 hours before the alert went out and 16 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.

343 
WFUS53 KILX 072204
TORILX
ILC039-113-147-072230-
/O.NEW.KILX.TO.W.0014.181007T2204Z-181007T2230Z/

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

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Northeastern Piatt County in central Illinois...
  Northeastern De Witt County in central Illinois...
  Southeastern McLean County in central Illinois...

* Until 530 PM CDT.
    
* At 503 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Farmer City, or 17 miles north of Monticello,
  moving northeast at 20 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 tornadic thunderstorm will remain over mainly rural areas of
  northeastern Piatt...northeastern De Witt and southeastern McLean
  Counties, including the following locations... Bellflower.

This includes Interstate 74 between mile markers 157 and 162.
 
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 4022 8861 4026 8867 4038 8856 4038 8846
      4028 8846
TIME...MOT...LOC 2203Z 232DEG 19KT 4027 8860 

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

$$

SB

2 follow-up statements

958 
WWUS53 KILX 072218
SVSILX

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

ILC039-147-072227-
/O.CAN.KILX.TO.W.0014.000000T0000Z-181007T2230Z/
Piatt-De Witt-
518 PM CDT SUN OCT 7 2018

...THE TORNADO WARNING FOR NORTHEASTERN PIATT AND NORTHEASTERN DE
WITT COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 4029 8864 4038 8856 4038 8846 4029 8846
TIME...MOT...LOC 2217Z 232DEG 19KT 4032 8852 

$$

ILC113-072230-
/O.CON.KILX.TO.W.0014.000000T0000Z-181007T2230Z/
McLean-
518 PM CDT SUN OCT 7 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
SOUTHEASTERN MCLEAN COUNTY...
    
At 517 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles north of Mansfield, or 12 miles southwest of
Gibson City, moving northeast at 20 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.

Locations impacted include...
Bellflower.

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 4029 8864 4038 8856 4038 8846 4029 8846
TIME...MOT...LOC 2217Z 232DEG 19KT 4032 8852 

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

$$

SB

892 
WWUS53 KILX 072233
SVSILX

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

ILC113-072241-
/O.EXP.KILX.TO.W.0014.000000T0000Z-181007T2230Z/
McLean-
533 PM CDT SUN OCT 7 2018

...THE TORNADO WARNING FOR SOUTHEASTERN MCLEAN COUNTY HAS EXPIRED...
    
The tornado threat has diminished and the Tornado Warning has been 
expired. However, damaging winds remain likely and a Severe 
Thunderstorm Warning remains in effect for the area.  However heavy 
rain is still possible with this thunderstorm.

Remember, a Severe Thunderstorm Warning still remains in effect for
southeast McLean and northwest Champaign counties.

LAT...LON 4029 8864 4038 8856 4038 8846 4029 8846
TIME...MOT...LOC 2231Z 232DEG 19KT 4036 8845 

$$

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, 5:11 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.