Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 61, NWS Lincoln, IL

June 25, 20214 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 25, 2021, 8:49 PM CDT for 4 counties in Illinois. It was in force for 41 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 25, 2021, 8:49 PM CDT (01:49 UTC)
Expired
Jun 25, 2021, 9:30 PM CDT
In force
41 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties DeWitt County, IL, Macon County, IL, McLean County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 47 km from the middle of the area, began a volume at 01:50 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.

IssuedProductOfficeLasted
Jun 25, 5:06 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.8 hours before the alert went out and 16 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 2021-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1254 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
1254 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
910 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
0.7
Supercell composite
6.6

Open this sounding in Storm Lab

The text

As transmitted.

420 
WUUS53 KILX 260149
SVRILX
ILC039-113-115-147-260230-
/O.NEW.KILX.SV.W.0061.210626T0149Z-210626T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
849 PM CDT Fri Jun 25 2021

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Central Piatt County in central Illinois...
  De Witt County in central Illinois...
  South central McLean County in central Illinois...
  Northern Macon County in central Illinois...

* Until 930 PM CDT.

* At 849 PM CDT, severe thunderstorms were located along a line
  extending from near Le Roy to Clinton to near Kenney, moving
  southeast at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Le Roy around 855 PM CDT.
  Farmer City around 905 PM CDT.

Other locations in the path of these severe thunderstorms include
Warrensburg, Maroa, Weldon, Mansfield, De Land, Monticello, Argenta
and Oreana.

This includes the following highways...
 Interstate 72 between mile markers 149 and 167.
 Interstate 74 between mile markers 151 and 166.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Lincoln.

&&

LAT...LON 4028 8847 3995 8859 3993 8914 4012 8914
      4017 8903 4038 8867
TIME...MOT...LOC 0149Z 299DEG 21KT 4031 8874 4014 8895 4009 8913 

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

Auten
1 follow-up statement
883 
WWUS53 KILX 260223
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
923 PM CDT Fri Jun 25 2021

ILC039-113-115-147-260233-
/O.EXP.KILX.SV.W.0061.000000T0000Z-210626T0230Z/
Piatt-De Witt-McLean-Macon-
923 PM CDT Fri Jun 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PIATT...DE WITT...
SOUTH CENTRAL MCLEAN AND NORTHERN MACON COUNTIES WILL EXPIRE AT 930
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.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
central Illinois.

LAT...LON 4028 8847 3995 8859 3993 8914 4012 8914
      4017 8903 4038 8867
TIME...MOT...LOC 0223Z 299DEG 21KT 4022 8852 4005 8873 4000 8891 

$$

Auten

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 7:21 PM CDTSevere Thunderstorm WarningILXLogan, Mason, Tazewell39 min
Jun 25, 7:33 PM CDTSpecial Weather StatementILXMcLean42 min
Jun 25, 7:38 PM CDTSevere Thunderstorm WarningILXMorgan, Scott67 min
Jun 25, 7:53 PM CDTSevere Thunderstorm WarningILXDeWitt, Logan, McLean, Tazewell67 min
Jun 25, 8:16 PM CDTSevere Thunderstorm WarningILXCass, Menard, Morgan, Sangamon44 min
Jun 25, 8:29 PM CDTTornado WarningILXMcLean30 min
Jun 25, 8:54 PM CDTFlash Flood WarningILXDeWitt, Logan, McLean, Mason, Tazewell6 hr
Jun 25, 9:05 PM CDTSevere Thunderstorm WarningILXLogan, Mason, Menard, Tazewell25 min
Jun 25, 9:47 PM CDTFlash Flood WarningILXMorgan, Scott6 hr
Jun 25, 9:59 PM CDTFlash Flood WarningILXDeWitt, McLean, Piatt5 hr
Jun 25, 10:18 PM CDTSevere Thunderstorm WarningILXChampaign, Coles, DeWitt, Douglas, Macon, Moultrie and 1 more27 min
Jun 26, 2:34 AM CDTAreal Flood WarningILXDeWitt, Logan, McLean, Mason, Piatt, Tazewell61 hr
Jun 26, 6:03 AM CDTRiver Flood WarningILXPiatt8 days
Jun 26, 9:44 AM CDTRiver Flood WarningILXMason, Menard4 days
Jun 26, 12:21 PM CDTTornado WarningILXMcLean24 min
Jun 26, 1:24 PM CDTTornado WarningILXMorgan, Scott36 min
Jun 26, 1:53 PM CDTTornado WarningILXMorgan37 min
Jun 26, 2:17 PM CDTTornado WarningILXMorgan, Sangamon28 min
Jun 26, 2:38 PM CDTTornado WarningILXMcLean, Woodford37 min
Jun 26, 3:12 PM CDTTornado WarningILXMcLean33 min
Jun 26, 3:19 PM CDTTornado WarningILXLogan, Sangamon26 min
Jun 26, 3:25 PM CDTFlash Flood WarningILXDeWitt, Logan, McLean, Macon, Mason, Menard and 3 more4 hr
Jun 26, 3:33 PM CDTSevere Thunderstorm WarningILXLogan27 min
Jun 26, 3:37 PM CDTTornado WarningILXMcLean23 min
Jun 26, 3:39 PM CDTTornado WarningILXLogan, Sangamon36 min
Jun 26, 4:04 PM CDTTornado WarningILXDeWitt26 min
Jun 26, 4:43 PM CDTSevere Thunderstorm WarningILXChampaign, DeWitt, McLean, Piatt32 min
Jun 26, 5:16 PM CDTSevere Thunderstorm WarningILXChampaign, DeWitt, McLean, Piatt44 min
Jun 26, 5:47 PM CDTTornado WarningILXDouglas, Moultrie, Piatt43 min
Jun 26, 5:50 PM CDTSevere Thunderstorm WarningILXVermilion40 min
Jun 26, 6:03 PM CDTTornado WarningILXChampaign, Douglas27 min
Jun 26, 6:24 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas, Edgar, Vermilion81 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.