Alert archive / Illinois / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 7, NWS Lincoln, IL

February 28, 2017Shelby County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Feb 28, 2017, 6:27 PM CST for Shelby County, Illinois. It was in force for 28 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: Feb 28, 2017, 6:27 PM CST (00:27 UTC)
Expired: Feb 28, 2017, 6:55 PM CST
In force: 28 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Shelby County, IL

The radar

The Lincoln radar (KILX), 98 km from the middle of the area, began a volume at 00:28 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
Feb 28, 6:45 PM CST	HAIL 1.75	Shelbyville, 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.

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, 0.5 hours before the alert went out and 89 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.

338 
WUUS53 KILX 010027
SVRILX
ILC173-010115-
/O.NEW.KILX.SV.W.0007.170301T0027Z-170301T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
627 PM CST TUE FEB 28 2017

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Shelby County in central Illinois...

* Until 715 PM CST

* At 626 PM CST, a severe thunderstorm was located near Ramsey, or 12
  miles southeast of Nokomis, moving northeast at 70 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Shelbyville, Windsor, Cowden, Tower Hill, Strasburg, Herrick,
  Clarksburg, Oconee, Trowbridge, Mode, Eagle Creek State Park and
  Wolf Creek State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted, act quickly and move to a
place of safety inside a sturdy structure such as a basement or small
interior room.

&&

A tornado watch remains in effect until 1000 PM CST for east central
and central Illinois.

LAT...LON 3922 8914 3931 8914 3934 8910 3935 8902
      3947 8889 3952 8865 3947 8858 3945 8858
      3945 8852 3944 8847 3932 8848 3922 8882
TIME...MOT...LOC 0026Z 237DEG 62KT 3920 8909 

HAIL...1.00IN
WIND...60MPH
 
$$

Shimon

3 follow-up statements

472 
WWUS53 KILX 010043
SVSILX

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

ILC173-010115-
/O.CON.KILX.SV.W.0007.000000T0000Z-170301T0115Z/
Shelby-
643 PM CST TUE FEB 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CST
FOR SOUTHEASTERN SHELBY COUNTY...

At 642 PM CST, a severe thunderstorm was located over Shelbyville,
moving northeast at 55 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Shelbyville, Windsor, Tower Hill, Strasburg, Clarksburg, Trowbridge,
Mode, Eagle Creek State Park and Wolf Creek State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Lincoln.

&&

A tornado watch remains in effect until 1000 PM CST for central and
east central Illinois.

LAT...LON 3930 8891 3939 8896 3947 8889 3952 8865
      3947 8858 3945 8858 3945 8852 3944 8847
      3932 8848 3923 8882
TIME...MOT...LOC 0042Z 237DEG 63KT 3937 8879 

HAIL...1.00IN
WIND...60MPH
 
$$

Shimon

106 
WWUS53 KILX 010052
SVSILX

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

ILC173-010115-
/O.CON.KILX.SV.W.0007.000000T0000Z-170301T0115Z/
Shelby-
652 PM CST TUE FEB 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CST
FOR EAST CENTRAL SHELBY COUNTY...

At 652 PM CST, a severe thunderstorm was located over Windsor, or 8
miles south of Sullivan, moving northeast at 70 mph.

HAZARD...Golf ball size hail. 

SOURCE...Trained weather spotters. 

IMPACT...People and animals outdoors will be injured. Expect damage 
         to roofs, siding, windows, and vehicles. 

Locations impacted include...
Windsor, Eagle Creek State Park and Wolf Creek State Park. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Lincoln.

&&

A tornado watch remains in effect until 1000 PM CST for central and
east central Illinois.

LAT...LON 3943 8873 3946 8876 3952 8865 3947 8858
      3945 8858 3945 8852 3944 8847 3935 8864
TIME...MOT...LOC 0052Z 242DEG 61KT 3948 8860 

HAIL...1.75IN
WIND...<50MPH
 
$$

Shimon

122 
WWUS53 KILX 010055
SVSILX

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

ILC173-010105-
/O.CAN.KILX.SV.W.0007.000000T0000Z-170301T0115Z/
Shelby-
655 PM CST TUE FEB 28 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SHELBY COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

A tornado watch remains in effect until 1000 PM CST for central and
east central Illinois.

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

LAT...LON 3943 8873 3946 8876 3952 8865 3947 8858
      3945 8858 3945 8852 3944 8847 3935 8864
TIME...MOT...LOC 0054Z 237DEG 62KT 3951 8854 

$$

Shimon

The office that day

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

Issued	Product	Office	Counties	Lasted
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, 8:34 PM CST	Tornado Warning	ILX	Clay, Richland	41 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

Severe Thunderstorm Warnings in Illinois, 2017 Every severe thunderstorm warning 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.