Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 6, NWS Lincoln, IL

March 27, 2021Clark County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Mar 27, 2021, 8:50 PM CDT for Clark County, Illinois. It was in force for 40 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
Mar 27, 2021, 8:50 PM CDT (01:50 UTC)
Expired
Mar 27, 2021, 9:30 PM CDT
In force
40 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Possible
Hail
0.88 in
Wind
60.0 mph

County Clark County, IL

The radar

The Evansville,IN radar (KVWX), 116 km from the middle of the area, began a volume at 01:49 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
Mar 27, 9:00 PM CDTTSTM WND DMG3 Sw Dennison, ILSEMI-TRUCK BLOWN OVER ON I-70 MILE MARKER 150. NO INJURIES REPORTED.
Mar 27, 9:00 PM CDTTSTM WND DMG4 S Clarksville, ILSEMI-TRUCK BLOWN OVER ON I-70 MILE MARKER 141. NO INJURIES REPORTED.

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
Mar 27, 4:44 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.8 hours before the alert went out and 125 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 2021-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2021-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
933 m above ground
0-6 km bulk shear
86 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

630 
WUUS53 KILX 280150
SVRILX
ILC023-280230-
/O.NEW.KILX.SV.W.0006.210328T0150Z-210328T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
850 PM CDT Sat Mar 27 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Clark County in east central Illinois...

* Until 930 PM CDT.

* At 850 PM CDT, a severe thunderstorm was located over Casey, or 12
  miles east of Toledo, moving east at 40 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Marshall, Casey, Martinsville, Westfield, Clarksville, Dennison,
  West Union, Darwin, Orange and Lincoln Trail State Park.

This includes Interstate 70 between mile markers 127 and 154.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3936 8753 3934 8758 3932 8759 3931 8762
      3930 8760 3928 8761 3925 8759 3925 8757
      3920 8758 3918 8762 3917 8801 3947 8801
      3947 8753
TIME...MOT...LOC 0150Z 268DEG 36KT 3929 8801 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
 
$$

Shimon
2 follow-up statements
703 
WWUS53 KILX 280206
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
906 PM CDT Sat Mar 27 2021

ILC023-280230-
/O.CON.KILX.SV.W.0006.000000T0000Z-210328T0230Z/
Clark-
906 PM CDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR CLARK COUNTY...

At 905 PM CDT, a severe thunderstorm was located over Martinsville,
or 12 miles southwest of Marshall, moving east at 30 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Marshall, Casey, Martinsville, Westfield, Clarksville, Dennison, West
Union, Darwin, Orange and Lincoln Trail State Park.

This includes Interstate 70 between mile markers 127 and 154.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3936 8753 3934 8758 3932 8759 3931 8762
      3930 8760 3928 8761 3925 8759 3925 8757
      3920 8758 3918 8762 3917 8801 3947 8801
      3947 8753
TIME...MOT...LOC 0205Z 264DEG 27KT 3930 8789 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
 
$$

Shimon
893 
WWUS53 KILX 280219
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
919 PM CDT Sat Mar 27 2021

ILC023-280230-
/O.CON.KILX.SV.W.0006.000000T0000Z-210328T0230Z/
Clark-
919 PM CDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR CLARK COUNTY...

At 919 PM CDT, a severe thunderstorm was located 7 miles east of
Martinsville, or 7 miles southwest of Marshall, moving east at 35
mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Marshall, Martinsville, Clarksville, Dennison, West Union, Darwin,
Orange and Lincoln Trail State Park.

This includes Interstate 70 between mile markers 136 and 154.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3936 8753 3934 8758 3932 8759 3931 8762
      3930 8760 3928 8761 3925 8759 3925 8757
      3920 8758 3918 8762 3917 8796 3947 8782
      3947 8753
TIME...MOT...LOC 0219Z 268DEG 30KT 3930 8776 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
 
$$

Shimon

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 27, 7:25 PM CDTSpecial Weather StatementILXEdgar50 min
Mar 27, 8:06 PM CDTSevere Thunderstorm WarningILXColes, Cumberland, Shelby54 min
Mar 27, 8:16 PM CDTTornado WarningILXColes, Cumberland, Shelby44 min
Mar 27, 8:20 PM CDTSevere Thunderstorm WarningILXClay, Effingham, Jasper55 min
Mar 27, 9:02 PM CDTSevere Thunderstorm WarningILXClay, Crawford, Jasper, Lawrence, Richland58 min
Mar 27, 9:27 PM CDTSevere Thunderstorm WarningILXClark, Edgar21 min
Mar 28, 3:39 AM CDTRiver Flood WarningILXClay, Richland41 hr

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.