Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 37, NWS Lincoln, IL

June 18, 2021Christian County, Sangamon County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 18, 2021, 8:43 PM CDT for Christian County, Sangamon County, Illinois. It was in force for 47 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
Jun 18, 2021, 8:43 PM CDT (01:43 UTC)
Expired
Jun 18, 2021, 9:30 PM CDT
In force
47 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Christian County, IL, Sangamon County, IL

The radar

The Lincoln radar (KILX), 47 km from the middle of the area, began a volume at 01:45 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, 8:54 PM CDTHAIL 0.751 S Grandview, ILESTIMATED PEA TO PENNY SIZE HAIL.

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 00:00Z, 1.7 hours before the alert went out and 95 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, Lincoln, IL at 00:00Z on 2021-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2124 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, Lincoln, IL at 00:00Z on 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 square meters per square second.193958Sfc1 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
2124 J/kg
Mixed-layer CIN
-145 J/kg
Mixed-layer LCL
1616 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.0

Open this sounding in Storm Lab

The text

As transmitted.

094 
WUUS53 KILX 190143
SVRILX
ILC021-167-190230-
/O.NEW.KILX.SV.W.0037.210619T0143Z-210619T0230Z/

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

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Northwestern Christian County in central Illinois...
  Central Sangamon County in central Illinois...

* Until 930 PM CDT.

* At 843 PM CDT, a severe thunderstorm was located over Springfield,
  moving east at 35 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.

* This severe thunderstorm will be near...
  Rochester and Riverton around 855 PM CDT.

Other locations in the path of this severe thunderstorm include
Mechanicsburg.

This includes the following highways...
 Interstate 55 between mile markers 93 and 103.
 Interstate 72 between mile markers 99 and 121.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3979 8985 3989 8976 3990 8928 3964 8929
      3972 8958 3975 8966
TIME...MOT...LOC 0143Z 279DEG 29KT 3982 8966 

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

Deubelbeiss
2 follow-up statements
032 
WWUS53 KILX 190209
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
909 PM CDT Fri Jun 18 2021

ILC021-167-190230-
/O.CON.KILX.SV.W.0037.000000T0000Z-210619T0230Z/
Christian-Sangamon-
909 PM CDT Fri Jun 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR NORTHWESTERN CHRISTIAN AND NORTHEASTERN SANGAMON COUNTIES...

At 908 PM CDT, a severe thunderstorm was located over Mechanicsburg,
or 12 miles east of Springfield, moving east at 35 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.

This severe thunderstorm will remain over mainly rural areas of
northwestern Christian and northeastern Sangamon Counties, including
the following locations... Dawson, Roby, Berry, Clear Lake, Southern
View, Grandview and Buffalo.

This includes the following highways...
 Interstate 55 between mile markers 93 and 99.
 Interstate 72 between mile markers 99 and 121.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3982 8963 3987 8951 3990 8928 3964 8929
      3972 8958 3975 8966
TIME...MOT...LOC 0208Z 280DEG 29KT 3977 8940 

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

Deubelbeiss
106 
WWUS53 KILX 190224
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
924 PM CDT Fri Jun 18 2021

ILC021-167-190234-
/O.EXP.KILX.SV.W.0037.000000T0000Z-210619T0230Z/
Christian-Sangamon-
924 PM CDT Fri Jun 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHRISTIAN AND
NORTHEASTERN SANGAMON COUNTIES WILL EXPIRE AT 930 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

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

LAT...LON 3982 8963 3987 8951 3990 8928 3964 8929
      3972 8958 3975 8966
TIME...MOT...LOC 0224Z 279DEG 29KT 3975 8925 

$$

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, 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 18, 11:57 PM CDTTornado WarningILXFulton, Knox33 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

Severe Thunderstorm Warnings in Illinois, 2021Every 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.