Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 10, NWS Lincoln, IL

August 6, 2018Champaign County, Illinois

NWS Lincoln, IL issued this tornado warning at Aug 6, 2018, 7:57 PM CDT for Champaign County, Illinois. It was in force for 22 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: Aug 6, 2018, 7:57 PM CDT (00:57 UTC)
Expired: Aug 6, 2018, 8:19 PM CDT
In force: 22 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Champaign County, IL

The radar

The Lincoln radar (KILX), 113 km from the middle of the area, began a volume at 00:57 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 00:00Z, 1.0 hours before the alert went out and 51 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: 3036 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1284 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 11.4

Open this sounding in Storm Lab

The text

As transmitted.

934 
WFUS53 KILX 070057
TORILX
ILC019-070130-
/O.NEW.KILX.TO.W.0010.180807T0057Z-180807T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
757 PM CDT MON AUG 6 2018

The National Weather Service in Lincoln has issued a

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

* Until 830 PM CDT.

* At 756 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near St. Joseph, or 8 miles south of Rantoul, moving
  east at 25 mph.

  HAZARD...Tornado.

  SOURCE...Weather spotters reported funnel cloud.

  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...
  St. Joseph around 805 PM CDT.
  Ogden around 815 PM CDT.

Other locations impacted by this tornadic thunderstorm include Royal
and Flatville.

This includes Interstate 74 between mile markers 184 and 197.
 
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 8794 4005 8794 4010 8820 4028 8818
      4029 8793 4023 8793
TIME...MOT...LOC 0056Z 275DEG 20KT 4019 8810 

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

$$

Bak

2 follow-up statements

508 
WWUS53 KILX 070107
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
807 PM CDT MON AUG 6 2018

ILC019-070130-
/O.CON.KILX.TO.W.0010.000000T0000Z-180807T0130Z/
Champaign-
807 PM CDT MON AUG 6 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR EAST
CENTRAL CHAMPAIGN COUNTY...
        
At 807 PM CDT, a severe thunderstorm capable of producing a tornado
was located near St. Joseph, or 10 miles southeast of Rantoul, moving
east at 25 mph.

HAZARD...Tornado.

SOURCE...Weather spotters reported a funnel cloud.

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...
  Ogden around 815 PM CDT.

Other locations impacted by this tornadic thunderstorm include Royal
and Flatville.

This includes Interstate 74 between mile markers 194 and 197.
 
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 8794 4005 8794 4017 8809 4025 8807
      4029 8793 4023 8793
TIME...MOT...LOC 0107Z 275DEG 20KT 4018 8802 

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

$$

Bak

277 
WWUS53 KILX 070119
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
819 PM CDT MON AUG 6 2018

ILC019-070127-
/O.CAN.KILX.TO.W.0010.000000T0000Z-180807T0130Z/
Champaign-
819 PM CDT MON AUG 6 2018

...THE TORNADO WARNING FOR EAST CENTRAL CHAMPAIGN COUNTY 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.

Remember, a Severe Thunderstorm Warning still remains in effect for 
extreme east central Champaign County until 845 PM.

LAT...LON 4022 8794 4005 8794 4017 8809 4025 8807
      4029 8793 4023 8793
TIME...MOT...LOC 0117Z 275DEG 20KT 4017 8794 

$$

Bak

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 7:06 PM CDT	Special Weather Statement	ILX	Vermilion	39 min
Aug 6, 7:22 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	30 min
Aug 6, 7:39 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	43 min
Aug 6, 10:14 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	46 min
Aug 6, 10:17 PM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	3 hr
Aug 6, 10:30 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	15 min
Aug 6, 10:46 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	44 min
Aug 7, 12:35 AM CDT	Severe Thunderstorm Warning	ILX	Cass, Fulton, Mason, Peoria, Schuyler, Tazewell	40 min
Aug 7, 1:15 AM CDT	Areal Flood Advisory	ILX	Champaign, Vermilion	3 hr
Aug 7, 1:20 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Logan, Mason, Menard, Tazewell	40 min
Aug 7, 1:35 AM CDT	Severe Thunderstorm Warning	ILX	Logan, McLean, Tazewell	40 min
Aug 7, 1:41 AM CDT	Tornado Warning	ILX	Logan, Mason	34 min
Aug 7, 2:13 AM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, McLean, Macon	15 min
Aug 7, 3:03 AM CDT	Severe Thunderstorm Warning	ILX	Morgan, Sangamon	42 min
Aug 7, 3:47 AM CDT	Special Weather Statement	ILX	Macon	43 min
Aug 7, 4:12 AM CDT	Areal Flood Advisory	ILX	Champaign, Vermilion	3 hr

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.