Alert archive / Illinois / Tornado Warnings in 2021

Tornado Warning 15, NWS Lincoln, IL

June 18, 2021Fulton County, Knox County, Illinois

NWS Lincoln, IL issued this tornado warning at Jun 18, 2021, 11:57 PM CDT for Fulton County, Knox County, Illinois. It was in force for 33 min. 5 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, 11:57 PM CDT (04:57 UTC)
Expired
Jun 19, 2021, 12:30 AM CDT
In force
33 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
2.5 in

Counties Fulton County, IL, Knox County, IL

The radar

The Lincoln radar (KILX), 91 km from the middle of the area, began a volume at 04:59 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

TimeReportWhereRemark
Jun 18, 11:59 PM CDTTSTM WND DMG1 Ne London Mills, ILDELAYED REPORT. TREE TRUNKS SNAPPED AND POWER LINES DOWN. TIME ESTIMATED FROM RADAR.
Jun 19, 12:00 AM CDTTSTM WND DMG3 Wnw Middle Grove, ILDELAYED REPORT. TREE TRUNKS SNAPPED. TIME ESTIMATED BASED ON RADAR.
Jun 19, 12:00 AM CDTTSTM WND DMGFairview, ILTREES DOWN. TIME ESTIMATED BY RADAR.
Jun 19, 12:00 AM CDTTSTM WND GST 903 E Saint Augustine, IL
Jun 19, 12:05 AM CDTTSTM WND DMG3 Sse Fairview, ILDELAYED REPORT. LARGE BRANCHES BROKEN. 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.

IssuedProductOfficeLasted
Jun 18, 9:20 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 5.0 hours before the alert went out and 106 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-pSkew-T log-p diagram, Davenport, at 00:00Z on 2021-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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.

344 
WFUS53 KILX 190457
TORILX
ILC057-095-190530-
/O.NEW.KILX.TO.W.0015.210619T0457Z-210619T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
1157 PM CDT Fri Jun 18 2021

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  North central Fulton County in west central Illinois...
  Southeastern Knox County in west central Illinois...

* Until 1230 AM CDT.
    
* At 1156 PM CDT, a severe thunderstorm capable of producing a
  tornado was located over London Mills, or 15 miles northwest of
  Canton, moving southeast at 30 mph.

  HAZARD...Tornado and tennis ball size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Fairview around 1210 AM CDT.
  Farmington around 1215 AM CDT.

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.

&&

LAT...LON 4075 8998 4065 8999 4053 9021 4073 9037
      4084 9020
TIME...MOT...LOC 0456Z 312DEG 25KT 4074 9023 

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

Deubelbeiss
2 follow-up statements
244 
WWUS53 KILX 190508
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1208 AM CDT Sat Jun 19 2021

ILC057-095-190530-
/O.CON.KILX.TO.W.0015.000000T0000Z-210619T0530Z/
Fulton-Knox-
1208 AM CDT Sat Jun 19 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT FOR NORTH
CENTRAL FULTON AND SOUTHEASTERN KNOX COUNTIES...
    
At 1207 AM CDT, a severe thunderstorm capable of producing a tornado 
was located near Fairview, or 10 miles northwest of Canton, moving 
southeast at 25 mph.

HAZARD...Tornado and tennis ball size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
  Farmington.

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.

&&

LAT...LON 4075 8998 4065 8999 4053 9021 4071 9031
      4078 9022
TIME...MOT...LOC 0507Z 314DEG 23KT 4069 9016 

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

Deubelbeiss
096 
WWUS53 KILX 190522
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1222 AM CDT Sat Jun 19 2021

ILC057-095-190530-
/O.EXP.KILX.TO.W.0015.000000T0000Z-210619T0530Z/
Fulton-Knox-
1222 AM CDT Sat Jun 19 2021

...THE TORNADO WARNING FOR NORTH CENTRAL FULTON AND SOUTHEASTERN KNOX
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 a severe 
thunderstorm warning remains in effect for portions of Fulton County 
and this storm is still capable of producing large hail, damaging 
winds and heavy rain.

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

LAT...LON 4075 8998 4065 8999 4053 9021 4071 9031
      4078 9022
TIME...MOT...LOC 0520Z 312DEG 25KT 4063 9008 

$$

Deubelbeiss

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:15 PM CDTSpecial Weather StatementILXCrawford30 min
Jun 18, 7:52 PM CDTSpecial Weather StatementILXMorgan23 min
Jun 18, 8:08 PM CDTSpecial Weather StatementILXSangamon52 min
Jun 18, 8:22 PM CDTSevere Thunderstorm WarningILXSangamon38 min
Jun 18, 8:43 PM CDTSevere Thunderstorm WarningILXChristian, Sangamon47 min
Jun 18, 9:13 PM CDTSpecial Weather StatementILXClark32 min
Jun 18, 9:44 PM CDTSevere Thunderstorm WarningILXClark, Cumberland46 min
Jun 18, 10:24 PM CDTSevere Thunderstorm WarningILXKnox, Peoria36 min
Jun 18, 10:32 PM CDTSevere Thunderstorm WarningILXClark, Crawford25 min
Jun 18, 11:06 PM CDTSevere Thunderstorm WarningILXKnox39 min
Jun 18, 11:29 PM CDTSevere Thunderstorm WarningILXClark46 min
Jun 18, 11:47 PM CDTSevere Thunderstorm WarningILXFulton, Knox, Peoria43 min
Jun 19, 12:13 AM CDTSevere Thunderstorm WarningILXFulton, Mason, Peoria, Tazewell47 min
Jun 19, 12:26 AM CDTFlash Flood WarningILXClark6 hr
Jun 19, 12:28 AM CDTFlash Flood WarningILXFulton, Knox5 hr
Jun 19, 12:52 AM CDTSevere Thunderstorm WarningILXLogan, McLean, Mason, Tazewell38 min
Jun 19, 1:19 AM CDTSevere Thunderstorm WarningILXLogan, McLean, Tazewell41 min
Jun 19, 1:23 AM CDTSevere Thunderstorm WarningILXMcLean52 min
Jun 19, 1:53 AM CDTFlash Flood WarningILXColes, Douglas, Edgar5 hr
Jun 19, 1:59 AM CDTSevere Thunderstorm WarningILXEdgar46 min
Jun 19, 2:19 AM CDTSevere Thunderstorm WarningILXMcLean41 min
Jun 19, 3:29 AM CDTFlash Flood WarningILXChampaign, Douglas, Edgar, Vermilion3 hr
Jun 19, 3:37 AM CDTSpecial Weather StatementILXChampaign, Douglas, Edgar, Vermilion53 min
Jun 19, 7:06 AM CDTSevere Thunderstorm WarningILXChristian, Macon, Sangamon24 min
Jun 19, 7:29 AM CDTSevere Thunderstorm WarningILXChristian, Macon, Shelby31 min
Jun 19, 10:19 AM CDTSevere Thunderstorm WarningILXMorgan, Sangamon41 min

Nearby

Tornado Warnings in Illinois, 2021Every tornado warning in 2021Tornadoes 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.