Alert archive / Illinois / Tornado Warnings in 2017

Tornado Warning 14, NWS Lincoln, IL

May 10, 2017Macon County, Piatt County, Illinois

NWS Lincoln, IL issued this tornado warning at May 10, 2017, 7:43 PM CDT for Macon County, Piatt County, Illinois. It was in force for 32 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: May 10, 2017, 7:43 PM CDT (00:43 UTC)
Expired: May 10, 2017, 8:15 PM CDT
In force: 32 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Macon County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 60 km from the middle of the area, began a volume at 00:46 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

Time	Report	Where	Remark
May 10, 7:50 PM CDT	TSTM WND DMG	2 S Argenta, IL	SEVERAL PINE TREES SNAPPED NEAR ARGENTA EXIT FROM I 72 AT MILE MARKER 150.

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.

Issued	Product	Office	Lasted
May 10, 12:59 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 10, 7:07 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 29 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: 442 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1634 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

As transmitted.

642 
WFUS53 KILX 110043
TORILX
ILC115-147-110115-
/O.NEW.KILX.TO.W.0014.170511T0043Z-170511T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
743 PM CDT WED MAY 10 2017

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Southern Piatt County in central Illinois...
  Northeastern Macon County in central Illinois...

* Until 815 PM CDT
    
* At 743 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Oreana, or 7 miles north of Decatur, moving east
  at 40 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

* This dangerous storm will be near...
  Cerro Gordo around 755 PM CDT. 
  Bement and Hammond around 810 PM CDT. 
  Atwood around 815 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Cisco,
Milmine, La Place, Oakley and Ivesdale.

This includes Interstate 72 between mile markers 137 and 158.
 
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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3979 8846 3979 8868 3988 8903 4005 8898
      4005 8893 4000 8846
TIME...MOT...LOC 0043Z 283DEG 36KT 3996 8891 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Barker

4 follow-up statements

763 
WWUS53 KILX 110050
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
750 PM CDT WED MAY 10 2017

ILC115-147-110115-
/O.CON.KILX.TO.W.0014.000000T0000Z-170511T0115Z/
Piatt-Macon-
750 PM CDT WED MAY 10 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR SOUTHERN
PIATT AND NORTHEASTERN MACON COUNTIES...
    
At 750 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Argenta, or 10 miles northeast of Decatur, moving
east at 45 mph.

HAZARD...TORNADO. 

SOURCE...Radar indicated rotation. 

IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

This dangerous storm will be near...
  Cerro Gordo around 755 PM CDT. 
  Bement and Hammond around 805 PM CDT. 
  Atwood around 815 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Milmine, Cisco, Ivesdale and Oakley.

This includes Interstate 72 between mile markers 146 and 154.
 
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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3979 8846 3979 8868 3995 8893 4002 8893
      4000 8846
TIME...MOT...LOC 0050Z 281DEG 39KT 3995 8879 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Barker

075 
WWUS53 KILX 110056
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
756 PM CDT WED MAY 10 2017

ILC115-110106-
/O.CAN.KILX.TO.W.0014.000000T0000Z-170511T0115Z/
Macon-
756 PM CDT WED MAY 10 2017

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

A severe thunderstorm watch remains in effect until midnight CDT for
central and east central Illinois.

LAT...LON 3979 8846 3985 8861 3989 8874 4001 8874
      4000 8846
TIME...MOT...LOC 0056Z 281DEG 39KT 3994 8871 

$$

ILC147-110115-
/O.CON.KILX.TO.W.0014.000000T0000Z-170511T0115Z/
Piatt-
756 PM CDT WED MAY 10 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR SOUTHERN
PIATT COUNTY...
    
At 756 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Cerro Gordo, or 9 miles southwest of Monticello,
moving east at 45 mph.

HAZARD...TORNADO. 

SOURCE...Radar indicated rotation. 

IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

This dangerous storm will be near...
  Bement around 805 PM CDT. 
  Atwood around 815 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Milmine, Ivesdale and Cisco.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3979 8846 3985 8861 3989 8874 4001 8874
      4000 8846
TIME...MOT...LOC 0056Z 281DEG 39KT 3994 8871 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Barker

446 
WWUS53 KILX 110104
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
804 PM CDT WED MAY 10 2017

ILC147-110115-
/O.CON.KILX.TO.W.0014.000000T0000Z-170511T0115Z/
Piatt-
804 PM CDT WED MAY 10 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN PIATT COUNTY...
    
At 803 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Bement, or near Monticello, moving east at 45 mph.

HAZARD...TORNADO. 

SOURCE...Radar indicated rotation. 

IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

This tornadic thunderstorm will remain over mainly rural areas of
southeastern Piatt County, including the following locations:
Ivesdale.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3987 8846 3991 8863 4000 8863 4000 8846
TIME...MOT...LOC 0103Z 279DEG 38KT 3993 8859 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Barker

474 
WWUS53 KILX 110114
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
814 PM CDT WED MAY 10 2017

ILC147-110124-
/O.EXP.KILX.TO.W.0014.000000T0000Z-170511T0115Z/
Piatt-
814 PM CDT WED MAY 10 2017

...THE TORNADO WARNING FOR SOUTHEASTERN PIATT COUNTY WILL EXPIRE AT
815 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

A severe thunderstorm watch remains in effect until midnight CDT for
central and east central Illinois.

LAT...LON 3987 8846 3991 8863 4000 8863 4000 8846
TIME...MOT...LOC 0114Z 283DEG 36KT 3991 8847 

$$

Barker

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:36 PM CDT	Special Weather Statement	ILX	Christian, DeWitt, McLean, Macon, Piatt	39 min
May 10, 8:31 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Douglas	17 min
May 10, 10:22 PM CDT	Special Weather Statement	ILX	Jasper	38 min
May 10, 10:55 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence, Richland	65 min
May 10, 11:22 PM CDT	Flash Flood Warning	ILX	Clay, Crawford, Effingham, Jasper, Lawrence, Richland	3 hr
May 11, 12:34 AM CDT	Flash Flood Warning	ILX	Clay, Lawrence, Richland	3 hr
May 11, 2:18 AM CDT	Areal Flood Warning	ILX	Clay, Crawford, Effingham, Jasper, Lawrence, Richland	12 hr
May 11, 3:58 AM CDT	River Flood Warning	ILX	Crawford, Jasper	17 hr
May 11, 2:16 PM CDT	Areal Flood Warning	ILX	Richland	6 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.