Alert archive / Illinois / Tornado Warnings in 2017

Tornado Warning 4, NWS Lincoln, IL

February 28, 2017Clay County, Richland County, Illinois

NWS Lincoln, IL issued this tornado warning at Feb 28, 2017, 8:34 PM CST for Clay County, Richland County, Illinois. It was in force for 41 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: Feb 28, 2017, 8:34 PM CST (02:34 UTC)
Expired: Feb 28, 2017, 9:15 PM CST
In force: 41 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Clay County, IL, Richland County, IL

The radar

The Evansville,IN radar (KVWX), 61 km from the middle of the area, began a volume at 02:36 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.

Issued	Product	Office	Lasted
Feb 28, 2:57 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.6 hours before the alert went out and 168 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: 687 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 887 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 395 m²/s²
0-3 km storm-relative helicity: 431 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 6.7

Open this sounding in Storm Lab

The text

As transmitted.

666 
WFUS53 KILX 010234
TORILX
ILC025-159-010315-
/O.NEW.KILX.TO.W.0004.170301T0234Z-170301T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
834 PM CST TUE FEB 28 2017

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Richland County in southeastern Illinois...
  Southeastern Clay County in south central Illinois...

* Until 915 PM CST
    
* At 834 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Schnell, or 10 miles southwest of Olney, moving
  east 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...
  Olney and Calhoun around 855 PM CST. 
  Claremont around 900 PM CST. 

Other locations impacted by this tornadic thunderstorm include Olney
Noble Airport and Berryville.

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 3861 8838 3869 8840 3885 8791 3860 8791
TIME...MOT...LOC 0234Z 256DEG 29KT 3867 8827 

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

$$

Shimon

2 follow-up statements

298 
WWUS53 KILX 010242
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
842 PM CST TUE FEB 28 2017

ILC025-010251-
/O.CAN.KILX.TO.W.0004.000000T0000Z-170301T0315Z/
Clay-
842 PM CST TUE FEB 28 2017

...THE TORNADO WARNING FOR SOUTHEASTERN CLAY 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 1000 PM CST for southeastern
Illinois.

LAT...LON 3863 8826 3872 8827 3885 8791 3866 8791
TIME...MOT...LOC 0241Z 256DEG 29KT 3869 8819 

$$

ILC159-010315-
/O.CON.KILX.TO.W.0004.000000T0000Z-170301T0315Z/
Richland-
842 PM CST TUE FEB 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CST FOR CENTRAL
RICHLAND COUNTY...
    
At 841 PM CST, a severe thunderstorm capable of producing a tornado
was located over Noble, or near Olney, moving east 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...
  Olney and Calhoun around 855 PM CST. 
  Claremont around 905 PM CST. 

Other locations impacted by this tornadic thunderstorm include Olney
Noble Airport.

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 3863 8826 3872 8827 3885 8791 3866 8791
TIME...MOT...LOC 0241Z 256DEG 29KT 3869 8819 

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

$$

Shimon

949 
WWUS53 KILX 010310
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
910 PM CST TUE FEB 28 2017

ILC159-010319-
/O.EXP.KILX.TO.W.0004.000000T0000Z-170301T0315Z/
Richland-
910 PM CST TUE FEB 28 2017

...THE TORNADO WARNING FOR CENTRAL RICHLAND COUNTY WILL EXPIRE AT 915
PM CST...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 1000 PM CST for southeastern
Illinois.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Lincoln.

LAT...LON 3863 8826 3872 8827 3885 8791 3866 8791
TIME...MOT...LOC 0309Z 256DEG 29KT 3874 8792 

$$

Shimon

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 6:27 PM CST	Severe Thunderstorm Warning	ILX	Shelby	28 min
Feb 28, 6:54 PM CST	Severe Thunderstorm Warning	ILX	Coles, Douglas, Moultrie	10 min
Feb 28, 7:38 PM CST	Severe Thunderstorm Warning	ILX	Clay, Jasper, Richland	67 min
Feb 28, 8:00 PM CST	Special Weather Statement	ILX	Marshall	30 min
Feb 28, 9:04 PM CST	Tornado Warning	ILX	Crawford, Lawrence, Richland	41 min
Feb 28, 9:29 PM CST	Tornado Warning	ILX	Cass, Schuyler	23 min
Feb 28, 9:50 PM CST	Special Weather Statement	ILX	Marshall, Peoria, Tazewell, Woodford	40 min
Feb 28, 10:32 PM CST	Special Weather Statement	ILX	McLean	28 min
Feb 28, 10:44 PM CST	Severe Thunderstorm Warning	ILX	McLean	46 min
Feb 28, 11:33 PM CST	Special Weather Statement	ILX	DeWitt, Piatt	57 min
Mar 1, 12:21 AM CST	Special Weather Statement	ILX	Champaign, Vermilion	54 min
Mar 1, 12:55 AM CST	Special Weather Statement	ILX	Coles, Douglas, Edgar, Moultrie	65 min
Mar 1, 2:27 AM CST	Special Weather Statement	ILX	Effingham, Jasper	48 min

Nearby

Tornado Warnings in Illinois, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.