Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 43, NWS Lincoln, IL

June 18, 2021Fulton County, Knox County, Peoria County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 18, 2021, 11:47 PM CDT for Fulton County, Knox County, Peoria County, Illinois. It was in force for 43 min. 16 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 18, 2021, 11:47 PM CDT (04:47 UTC)
Expired: Jun 19, 2021, 12:30 AM CDT
In force: 43 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 70.0 mph

Counties Fulton County, IL, Knox County, IL, Peoria County, IL

The radar

The Lincoln radar (KILX), 92 km from the middle of the area, began a volume at 04:50 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 18, 11:48 PM CDT	TSTM WND DMG	2 E Abingdon, IL	DELAYED REPORT. POWER POLES BROKEN. TIME ESTIMATED FROM RADAR.
Jun 18, 11:50 PM CDT	TSTM WND DMG	3 E London Mills, IL	REPORT OF NUMEROUS TREES SNAPPED, GRAIN ELEVATORS SEVERELY DAMAGED, AND POWERLINES BLOWN DOWN. ESTIMATED 80 MPH WINDS BASED ON DAMAGE.
Jun 18, 11:50 PM CDT	TSTM WND DMG	4 N Abingdon, IL	DOWNED POWER LINES AND TREES SNAPPED ON ROUTE 41.
Jun 18, 11:50 PM CDT	TORNADO	3 Sw Delong, IL	THIS TORNADO MAINLY DAMAGED TREES, CROPS, POWER POLES/LINES. THERE WAS ALSO SIGNIFICANT DAMAGE TO FARM OUTBUILDINGS AND DEBRIS WAS THROWN HALF A MILE. THE TORNADO ENDED 3 WNW OF MIDDLE GROVE AT 1205 AM. PATH LENGTH WAS 10.4 MILES. WIDTH WAS 250 YARDS. PEAK WIN
Jun 18, 11:52 PM CDT	TSTM WND DMG	4 E London Mills, IL	REPORT OF FARM EQUIPMENT BUILDINGS DAMAGED AND POWERLINES BLOWN INTO FIELD.
Jun 18, 11:59 PM CDT	TSTM WND DMG	1 Ne London Mills, IL	DELAYED REPORT. TREE TRUNKS SNAPPED AND POWER LINES DOWN. TIME ESTIMATED FROM RADAR.
Jun 19, 12:00 AM CDT	TSTM WND DMG	3 Wnw Middle Grove, IL	DELAYED REPORT. TREE TRUNKS SNAPPED. TIME ESTIMATED BASED ON RADAR.
Jun 19, 12:00 AM CDT	TSTM WND DMG	Fairview, IL	TREES DOWN. TIME ESTIMATED BY RADAR.
Jun 19, 12:00 AM CDT	TSTM WND GST 90	3 E Saint Augustine, IL
Jun 19, 12:05 AM CDT	TSTM WND DMG	3 Sse Fairview, IL	DELAYED REPORT. LARGE BRANCHES BROKEN. TIME ESTIMATED FROM RADAR.
Jun 19, 12:06 AM CDT	TSTM WND DMG	4 Sw Norris, IL	POWER LINE AND POWER POLES BROKEN OFF.
Jun 19, 12:10 AM CDT	TSTM WND DMG	1 W Canton, IL	ROOF AND SIDING DAMAGE. TIME ESTIMATED BY RADAR.
Jun 19, 12:10 AM CDT	TSTM WND DMG	Canton, IL	TREES AND POWER LINES DOWN ALONG ROUTE 9 WEST OF CANTON. TIME ESTIMATED BY RADAR.
Jun 19, 12:10 AM CDT	TSTM WND DMG	Canton, IL	LOTS OF TREES DOWN ON NORTH SIDE OF CANTON. REPORT RELAYED BY BROADCAST MEDIA. TIME ESTIMATED BY RADAR.
Jun 19, 12:10 AM CDT	HAIL 0.88	Canton, IL	PEA TO PENNY SIZE HAIL. REPORT RELAYED BY BROADCAST MEDIA. TIME ESTIMATED BY RADAR.
Jun 19, 12:11 AM CDT	TSTM WND DMG	1 Sse Norris, IL	DELAYED REPORT. TREE TRUNK SNAPPED. TIME ESTIMATED FROM RADAR.

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
Jun 18, 9:20 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.8 hours before the alert went out and 105 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: 4 J/kg
Mixed-layer CIN: -335 J/kg
Mixed-layer LCL: 2572 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

416 
WUUS53 KILX 190447
SVRILX
ILC057-095-143-190530-
/O.NEW.KILX.SV.W.0043.210619T0447Z-210619T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
1147 PM CDT Fri Jun 18 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Northern Fulton County in west central Illinois...
  Southern Knox County in west central Illinois...
  West central Peoria County in central Illinois...

* Until 1230 AM CDT.

* At 1147 PM CDT, a severe thunderstorm was located near London
  Mills, or 13 miles south of Galesburg, moving southeast at 30 mph.

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

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  London Mills and Maquon around 1155 PM CDT.

Other locations in the path of this severe thunderstorm include
Fairview, Farmington and Canton.

This includes Interstate 74 between mile markers 50 and 84.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4078 8967 4037 9027 4056 9045 4084 9045
      4096 9026
TIME...MOT...LOC 0447Z 306DEG 27KT 4077 9031 

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

Deubelbeiss

1 follow-up statement

903 
WWUS53 KILX 190529
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1229 AM CDT Sat Jun 19 2021

ILC057-095-143-190539-
/O.EXP.KILX.SV.W.0043.000000T0000Z-210619T0530Z/
Fulton-Knox-Peoria-
1229 AM CDT Sat Jun 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN FULTON...SOUTHERN
KNOX AND WEST CENTRAL PEORIA COUNTIES WILL EXPIRE AT 1230 AM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
central and west central Illinois.

LAT...LON 4078 8967 4037 9027 4056 9045 4084 9045
      4096 9026
TIME...MOT...LOC 0529Z 306DEG 27KT 4059 8998 

$$

Deubelbeiss

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 7:15 PM CDT	Special Weather Statement	ILX	Crawford	30 min
Jun 18, 7:52 PM CDT	Special Weather Statement	ILX	Morgan	23 min
Jun 18, 8:08 PM CDT	Special Weather Statement	ILX	Sangamon	52 min
Jun 18, 8:22 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	38 min
Jun 18, 8:43 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Sangamon	47 min
Jun 18, 9:13 PM CDT	Special Weather Statement	ILX	Clark	32 min
Jun 18, 9:44 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Cumberland	46 min
Jun 18, 10:24 PM CDT	Severe Thunderstorm Warning	ILX	Knox, Peoria	36 min
Jun 18, 10:32 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford	25 min
Jun 18, 11:06 PM CDT	Severe Thunderstorm Warning	ILX	Knox	39 min
Jun 18, 11:29 PM CDT	Severe Thunderstorm Warning	ILX	Clark	46 min
Jun 18, 11:57 PM CDT	Tornado Warning	ILX	Fulton, Knox	33 min
Jun 19, 12:13 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason, Peoria, Tazewell	47 min
Jun 19, 12:26 AM CDT	Flash Flood Warning	ILX	Clark	6 hr
Jun 19, 12:28 AM CDT	Flash Flood Warning	ILX	Fulton, Knox	5 hr
Jun 19, 12:52 AM CDT	Severe Thunderstorm Warning	ILX	Logan, McLean, Mason, Tazewell	38 min
Jun 19, 1:19 AM CDT	Severe Thunderstorm Warning	ILX	Logan, McLean, Tazewell	41 min
Jun 19, 1:23 AM CDT	Severe Thunderstorm Warning	ILX	McLean	52 min
Jun 19, 1:53 AM CDT	Flash Flood Warning	ILX	Coles, Douglas, Edgar	5 hr
Jun 19, 1:59 AM CDT	Severe Thunderstorm Warning	ILX	Edgar	46 min
Jun 19, 2:19 AM CDT	Severe Thunderstorm Warning	ILX	McLean	41 min
Jun 19, 3:29 AM CDT	Flash Flood Warning	ILX	Champaign, Douglas, Edgar, Vermilion	3 hr
Jun 19, 3:37 AM CDT	Special Weather Statement	ILX	Champaign, Douglas, Edgar, Vermilion	53 min
Jun 19, 7:06 AM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon, Sangamon	24 min
Jun 19, 7:29 AM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon, Shelby	31 min
Jun 19, 10:19 AM CDT	Severe Thunderstorm Warning	ILX	Morgan, Sangamon	41 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.