Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 121, NWS Lincoln, IL

October 24, 2021Clay County, Effingham County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Oct 24, 2021, 10:57 PM CDT for Clay County, Effingham County, Illinois. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 24, 2021, 10:57 PM CDT (03:57 UTC)
Expired: Oct 24, 2021, 11:30 PM CDT
In force: 33 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.88 in
Wind: 60.0 mph

Counties Clay County, IL, Effingham County, IL

The radar

The Evansville,IN radar (KVWX), 104 km from the middle of the area, began a volume at 03:59 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 24, 5:44 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 4.0 hours before the alert went out and 135 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: 3 J/kg
Mixed-layer CIN: -286 J/kg
Mixed-layer LCL: 585 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 371 m²/s²
0-3 km storm-relative helicity: 467 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted.

649 
WUUS53 KILX 250357
SVRILX
ILC025-049-250430-
/O.NEW.KILX.SV.W.0121.211025T0357Z-211025T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
1057 PM CDT Sun Oct 24 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Northern Clay County in south central Illinois...
  Effingham County in south central Illinois...

* Until 1130 PM CDT.

* At 1057 PM CDT, severe thunderstorms were located along a line
  extending from near St. Elmo to Farina to near Omega, moving east
  at 50 mph.

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

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Altamont, Edgewood and Iola around 1105 PM CDT.
  Watson around 1115 PM CDT.

Other locations in the path of these severe thunderstorms include
Louisville, Bible Grove, Teutopolis, Dieterich, Montrose and Sailor
Springs.

This includes the following highways...
 Interstate 57 between mile markers 142 and 164.
 Interstate 70 between mile markers 79 and 104.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for south central,
southeastern and east central Illinois.

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

A Tornado Watch remains in effect until 100 AM CDT for south central,
southeastern and east central Illinois.

&&

LAT...LON 3891 8870 3891 8881 3908 8880 3918 8846
      3917 8836 3886 8836 3885 8834 3874 8835
      3874 8870
TIME...MOT...LOC 0357Z 256DEG 42KT 3897 8885 3885 8876 3868 8882 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Deubelbeiss

2 follow-up statements

335 
WWUS53 KILX 250414
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1114 PM CDT Sun Oct 24 2021

ILC025-049-250430-
/O.CON.KILX.SV.W.0121.000000T0000Z-211025T0430Z/
Clay-Effingham-
1114 PM CDT Sun Oct 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR NORTHERN CLAY AND EFFINGHAM COUNTIES...

At 1113 PM CDT, severe thunderstorms were located along a line
extending from near Watson to near Iola to 6 miles north of Xenia,
moving east at 50 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
  Bible Grove, Teutopolis, Dieterich, Sailor Springs and Montrose.

This includes the following highways...
 Interstate 57 between mile markers 142 and 164.
 Interstate 70 between mile markers 79 and 104.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 100 AM CDT for south central,
southeastern and east central Illinois.

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3891 8870 3891 8881 3908 8880 3918 8846
      3917 8836 3886 8836 3885 8834 3874 8835
      3874 8870
TIME...MOT...LOC 0413Z 256DEG 42KT 3901 8863 3889 8854 3872 8861 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Deubelbeiss

983 
WWUS53 KILX 250422
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1122 PM CDT Sun Oct 24 2021

ILC025-049-250431-
/O.EXP.KILX.SV.W.0121.000000T0000Z-211025T0430Z/
Clay-Effingham-
1122 PM CDT Sun Oct 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CLAY AND EFFINGHAM
COUNTIES WILL EXPIRE AT 1130 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with these thunderstorms.

A Tornado Watch remains in effect until 100 AM CDT for south central,
southeastern and east central Illinois.

LAT...LON 3891 8870 3891 8881 3908 8880 3918 8846
      3917 8836 3886 8836 3885 8834 3874 8835
      3874 8870
TIME...MOT...LOC 0421Z 256DEG 42KT 3903 8853 3891 8844 3874 8851 

$$

Deubelbeiss

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 24, 7:04 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, McLean, Macon, Menard, Sangamon and 1 more	41 min
Oct 24, 7:08 PM CDT	Flash Flood Warning	ILX	McLean, Tazewell, Woodford	3 hr
Oct 24, 7:38 PM CDT	Special Weather Statement	ILX	Vermilion	37 min
Oct 24, 7:48 PM CDT	Flash Flood Warning	ILX	McLean, Tazewell	3 hr
Oct 24, 7:58 PM CDT	Areal Flood Warning	ILX	Fulton, Schuyler	9 hr
Oct 24, 8:04 PM CDT	Special Weather Statement	ILX	Champaign, Vermilion	41 min
Oct 24, 8:06 PM CDT	Special Weather Statement	ILX	DeWitt, Piatt	39 min
Oct 24, 8:09 PM CDT	Special Weather Statement	ILX	Fulton	36 min
Oct 24, 8:32 PM CDT	River Flood Warning	ILX	Fulton, Knox	71 hr
Oct 24, 8:32 PM CDT	River Flood Warning	ILX	Fulton	35 hr
Oct 24, 8:37 PM CDT	River Flood Warning	ILX	McLean, Tazewell, Woodford	14 hr
Oct 24, 9:25 PM CDT	Special Weather Statement	ILX	Champaign, Vermilion	65 min
Oct 24, 9:51 PM CDT	Special Weather Statement	ILX	Christian	24 min
Oct 24, 9:57 PM CDT	Tornado Warning	ILX	Christian, Macon, Shelby	21 min
Oct 25, 3:18 AM CDT	Wind Advisory	ILX	Champaign, DeWitt, McLean, Piatt, Vermilion	10 hr
Oct 25, 11:48 AM CDT	River Flood Warning	ILX	Marshall, Putnam	47 hr
Oct 25, 11:50 AM CDT	River Flood Warning	ILX	Peoria, Tazewell, Woodford	12 days
Oct 25, 11:52 AM CDT	River Flood Warning	ILX	Cass, Fulton, Mason	21 days
Oct 25, 11:54 AM CDT	River Flood Warning	ILX	Brown, Cass, Morgan, Schuyler	22 days

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.