Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 69, NWS Lincoln, IL

June 29, 2021Vermilion County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 29, 2021, 1:58 PM CDT for Vermilion County, Illinois. It was in force for 47 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
Jun 29, 2021, 1:58 PM CDT (18:58 UTC)
Expired
Jun 29, 2021, 2:45 PM CDT
In force
47 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Vermilion County, IL

The radar

The Indianapolis radar (KIND), 123 km from the middle of the area, began a volume at 18:59 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.0 hours before the alert went out and 81 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 12:00Z on 2021-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1224 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 12:00Z on 2021-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.1939Sfc1 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
1224 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

910 
WUUS53 KILX 291858
SVRILX
ILC183-291945-
/O.NEW.KILX.SV.W.0069.210629T1858Z-210629T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
158 PM CDT Tue Jun 29 2021

The National Weather Service in Lincoln has issued a

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

* Until 245 PM CDT.

* At 158 PM CDT, a severe thunderstorm was located near Allerton, or
  18 miles southwest of Danville, moving northeast at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Fairmount around 215 PM CDT.

Other locations in the path of this severe thunderstorm include
Muncie, Georgetown, Catlin, Oakwood, Danville, Westville, Tilton and
Belgium.

This includes Interstate 74 between mile markers 198 and 219.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

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

&&

LAT...LON 3988 8757 3987 8757 3987 8761 3988 8762
      3988 8793 3994 8794 4018 8794 4043 8753
      3988 8754
TIME...MOT...LOC 1858Z 236DEG 16KT 3997 8789 

HAIL...<.75IN
WIND...60MPH
 
$$

25
3 follow-up statements
757 
WWUS53 KILX 291917
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
217 PM CDT Tue Jun 29 2021

ILC183-291945-
/O.CON.KILX.SV.W.0069.000000T0000Z-210629T1945Z/
Vermilion-
217 PM CDT Tue Jun 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR SOUTHERN VERMILION COUNTY...

At 217 PM CDT, a severe thunderstorm was located near Catlin, or 10
miles southwest of Danville, moving northeast at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
  Georgetown, Catlin, Oakwood, Westville, Belgium, Danville and 
  Tilton.

This includes Interstate 74 between mile markers 204 and 219.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

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

&&

LAT...LON 3988 8757 3987 8757 3987 8761 3988 8762
      3988 8793 4021 8779 4043 8753 3988 8754
TIME...MOT...LOC 1917Z 235DEG 18KT 4004 8776 

HAIL...<.75IN
WIND...60MPH
 
$$

25
725 
WWUS53 KILX 291932
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
232 PM CDT Tue Jun 29 2021

ILC183-291945-
/O.CON.KILX.SV.W.0069.000000T0000Z-210629T1945Z/
Vermilion-
232 PM CDT Tue Jun 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR EAST CENTRAL VERMILION COUNTY...

At 232 PM CDT, a severe thunderstorm was located near Oakwood, 
moving northeast at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Danville, Oakwood, Bismarck, Vermilion County Airport, Alvin and
Kickapoo State Park.

This includes Interstate 74 between mile markers 207 and 211.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

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

&&

LAT...LON 4009 8778 4021 8779 4043 8753 4014 8754
TIME...MOT...LOC 1932Z 223DEG 19KT 4016 8771 

HAIL...<.75IN
WIND...60MPH
 
$$

25
952 
WWUS53 KILX 291944
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
244 PM CDT Tue Jun 29 2021

ILC183-291953-
/O.EXP.KILX.SV.W.0069.000000T0000Z-210629T1945Z/
Vermilion-
244 PM CDT Tue Jun 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL VERMILION COUNTY
WILL EXPIRE AT 245 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

Remember, a Severe Thunderstorm Warning still remains in effect for
northern Vermilion County until 330 PM CDT.

LAT...LON 4009 8778 4021 8779 4043 8753 4014 8754
TIME...MOT...LOC 1943Z 236DEG 16KT 4018 8767 

$$

25

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 7:58 PM CDTRiver Flood WarningILXVermilion13 hr
Jun 28, 9:49 PM CDTRiver Flood WarningILXMcLean, Tazewell, Woodford12 hr
Jun 29, 10:43 AM CDTRiver Flood WarningILXPeoria, Tazewell, Woodford21 days
Jun 29, 2:41 PM CDTSevere Thunderstorm WarningILXVermilion38 min
Jun 29, 5:31 PM CDTSpecial Weather StatementILXMcLean44 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.