Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 32, NWS Lincoln, IL

June 12, 2021Piatt County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 12, 2021, 6:37 PM CDT for Piatt County, Illinois. It was in force for 38 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: Jun 12, 2021, 6:37 PM CDT (23:37 UTC)
Expired: Jun 12, 2021, 7:15 PM CDT
In force: 38 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Piatt County, IL

The radar

The Lincoln radar (KILX), 66 km from the middle of the area, began a volume at 23:39 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, 11.6 hours before the alert went out and 5 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: 897 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1584 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

376 
WUUS53 KILX 122337
SVRILX
ILC147-130015-
/O.NEW.KILX.SV.W.0032.210612T2337Z-210613T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
637 PM CDT Sat Jun 12 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Northeastern Piatt County in central Illinois...

* Until 715 PM CDT.

* At 636 PM CDT, a severe thunderstorm was located near De Land, or 9
  miles north of Monticello, moving southeast at 15 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Monticello and White Heath.

This includes Interstate 72 between mile markers 166 and 173.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 4009 8862 4016 8863 4021 8858 4018 8846
      3998 8847
TIME...MOT...LOC 2336Z 318DEG 14KT 4017 8858 

HAIL...1.25IN
WIND...60MPH
 
$$

Shimon

3 follow-up statements

726 
WWUS53 KILX 122348
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
648 PM CDT Sat Jun 12 2021

ILC147-130015-
/O.CON.KILX.SV.W.0032.000000T0000Z-210613T0015Z/
Piatt-
648 PM CDT Sat Jun 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR NORTHEASTERN PIATT COUNTY...

At 648 PM CDT, a severe thunderstorm was located over De Land, or
near Monticello, moving south at 15 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...
Monticello, White Heath, Galesville and Lodge. 

This includes Interstate 72 between mile markers 166 and 173.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4009 8862 4016 8863 4021 8858 4018 8846
      3998 8847
TIME...MOT...LOC 2348Z 338DEG 13KT 4012 8860 

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

Shimon

296 
WWUS53 KILX 130003
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
703 PM CDT Sat Jun 12 2021

ILC147-130015-
/O.CON.KILX.SV.W.0032.000000T0000Z-210613T0015Z/
Piatt-
703 PM CDT Sat Jun 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR EAST CENTRAL PIATT COUNTY...

At 702 PM CDT, a severe thunderstorm was located near White Heath, or
near Monticello, moving southeast at 15 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...
Monticello, White Heath and Lodge. 

This includes Interstate 72 between mile markers 166 and 173.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4015 8863 4015 8856 4012 8847 3998 8847
      4009 8862
TIME...MOT...LOC 0002Z 316DEG 12KT 4009 8856 

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

Shimon

652 
WWUS53 KILX 130010
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
710 PM CDT Sat Jun 12 2021

ILC147-130020-
/O.EXP.KILX.SV.W.0032.000000T0000Z-210613T0015Z/
Piatt-
710 PM CDT Sat Jun 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PIATT COUNTY WILL
EXPIRE AT 715 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
is still possible with this thunderstorm.

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

LAT...LON 4015 8863 4015 8856 4012 8847 3998 8847
      4009 8862
TIME...MOT...LOC 0010Z 318DEG 14KT 4007 8854 

$$

Shimon

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 3:00 PM CDT	Special Weather Statement	ILX	Clark	30 min
Jun 12, 5:06 PM CDT	Special Weather Statement	ILX	Cumberland	54 min
Jun 12, 5:56 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	33 min
Jun 12, 6:11 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	18 min
Jun 12, 6:21 PM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	78 min
Jun 12, 6:41 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Shelby	38 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2021 Every severe thunderstorm warning in 2021

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.