Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 30, NWS Lincoln, IL

June 12, 2021Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 12, 2021, 5:56 PM CDT for Champaign County, Vermilion County, Illinois. It was in force for 33 min. 2 reports 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: Jun 12, 2021, 5:56 PM CDT (22:56 UTC)
Expired: Jun 12, 2021, 6:29 PM CDT
In force: 33 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Champaign County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 131 km from the middle of the area, began a volume at 22:57 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.

What was reported inside it

Time	Report	Where	Remark
Jun 12, 6:00 PM CDT	TSTM WND DMG	1 Nw Rankin, IL	TIME ESTIMATED FROM RADAR.
Jun 12, 6:00 PM CDT	TSTM WND DMG	Rankin, IL	RELAYED VIA BROADCAST MEDIA. SMALL GRAIN BIN WRAPPED AROUND TELEPHONE POLE. TIME ESTIMATED BASED ON RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.9 hours before the alert went out and 70 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.

165 
WUUS53 KILX 122256
SVRILX
ILC019-183-130000-
/O.NEW.KILX.SV.W.0030.210612T2256Z-210613T0000Z/

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

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Northern Vermilion County in east central Illinois...
  Northeastern Champaign County in east central Illinois...

* Until 700 PM CDT.

* At 555 PM CDT, a severe thunderstorm was located near Buckley, or 7
  miles northeast of Paxton, moving southeast at 20 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Trained weather spotters.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings. Power outages are likely.

* This severe thunderstorm will be near...
  Rankin around 615 PM CDT.

Other locations in the path of this severe thunderstorm include
Rossville and Potomac.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This is a DANGEROUS SITUATION. This storm is producing widespread 
wind damage across southern Iroquois County. SEEK SHELTER NOW inside 
a sturdy structure and stay away from windows!

&&

LAT...LON 4017 8794 4040 8807 4040 8794 4049 8793
      4049 8766 4037 8753 4036 8753
TIME...MOT...LOC 2255Z 320DEG 17KT 4053 8800 

HAIL...1.00IN
WIND...70MPH
 
$$

Shimon

1 follow-up statement

486 
WWUS53 KILX 122329
SVSILX

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

ILC019-183-122338-
/O.CAN.KILX.SV.W.0030.000000T0000Z-210613T0000Z/
Vermilion-Champaign-
629 PM CDT Sat Jun 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN VERMILION AND
NORTHEASTERN CHAMPAIGN COUNTIES IS CANCELLED...
                
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 has been cancelled.  However heavy rain 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 4017 8794 4040 8807 4040 8794 4049 8793
      4049 8766 4037 8753 4036 8753
TIME...MOT...LOC 2327Z 320DEG 17KT 4041 8787 

$$

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, 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, 6:37 PM CDT	Severe Thunderstorm Warning	ILX	Piatt	38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.