Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 113, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Oct 11, 2021, 5:03 PM CDT for 5 counties in Illinois. It was in force for 42 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 11, 2021, 5:03 PM CDT (22:03 UTC)
- Expired
- Oct 11, 2021, 5:45 PM CDT
- In force
- 42 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties DeWitt County, IL, Logan County, IL, Macon County, IL, McLean County, IL, Piatt County, IL
The radar
The Lincoln radar (KILX), 40 km from the middle of the area, began a volume at 22:04 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 11, 3:10 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 29 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.
- Mixed-layer CAPE
- 287 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 867 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.3
The text
As transmitted.
436 WUUS53 KILX 112203 SVRILX ILC039-107-113-115-147-112245- /O.NEW.KILX.SV.W.0113.211011T2203Z-211011T2245Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Lincoln IL 503 PM CDT Mon Oct 11 2021 The National Weather Service in Lincoln has issued a * Severe Thunderstorm Warning for... Northeastern Logan County in central Illinois... Northwestern Piatt County in central Illinois... De Witt County in central Illinois... South central McLean County in central Illinois... Northwestern Macon County in central Illinois... * Until 545 PM CDT. * At 503 PM CDT, severe thunderstorms were located along a line extending from McLean to Kenney, moving east at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Severe thunderstorms will be near... Clinton around 520 PM CDT. Other locations in the path of these severe thunderstorms include Heyworth, Downs and Le Roy. This includes the following highways... Interstate 55 between mile markers 140 and 145. Interstate 74 between mile markers 142 and 155. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 900 PM CDT for central Illinois. Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until 900 PM CDT for central Illinois. && LAT...LON 4043 8874 4018 8865 4004 8915 4031 8923 TIME...MOT...LOC 2203Z 257DEG 29KT 4031 8919 4009 8911 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Shimon
2 follow-up statements
798 WWUS53 KILX 112219 SVSILX Severe Weather Statement National Weather Service Lincoln IL 519 PM CDT Mon Oct 11 2021 ILC107-115-112228- /O.CAN.KILX.SV.W.0113.000000T0000Z-211011T2245Z/ Logan-Macon- 519 PM CDT Mon Oct 11 2021 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LOGAN AND NORTHWESTERN MACON COUNTIES IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Tornado Watch remains in effect until 900 PM CDT for central Illinois. LAT...LON 4043 8874 4018 8865 4007 8905 4034 8909 TIME...MOT...LOC 2218Z 258DEG 31KT 4033 8901 4011 8893 $$ ILC039-113-147-112245- /O.CON.KILX.SV.W.0113.000000T0000Z-211011T2245Z/ Piatt-De Witt-McLean- 519 PM CDT Mon Oct 11 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR NORTHWESTERN PIATT...CENTRAL DE WITT AND SOUTH CENTRAL MCLEAN COUNTIES... At 518 PM CDT, severe thunderstorms were located along a line extending from near Heyworth to near Clinton, moving east at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Downs and Le Roy. This includes Interstate 74 between mile markers 143 and 155. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 900 PM CDT for central Illinois. Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4043 8874 4018 8865 4007 8905 4034 8909 TIME...MOT...LOC 2218Z 258DEG 31KT 4033 8901 4011 8893 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Shimon
122 WWUS53 KILX 112234 RRA SVSILX Severe Weather Statement National Weather Service Lincoln IL 534 PM CDT Mon Oct 11 2021 ILC039-113-147-112245- /O.CON.KILX.SV.W.0113.000000T0000Z-211011T2245Z/ Piatt-De Witt-McLean- 534 PM CDT Mon Oct 11 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR NORTHWESTERN PIATT...NORTHEASTERN DE WITT AND SOUTH CENTRAL MCLEAN COUNTIES... At 534 PM CDT, severe thunderstorms were located along a line extending from near Downs to Weldon, moving east at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Le Roy, Downs and De Witt. This includes Interstate 74 between mile markers 143 and 155. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 900 PM CDT for central Illinois. Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4043 8874 4018 8865 4013 8882 4039 8890 TIME...MOT...LOC 2234Z 257DEG 29KT 4036 8886 4014 8878 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Shimon
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 12:00 PM CDT | Special Weather Statement | ILX | Morgan | 30 min |
| Oct 11, 12:55 PM CDT | Special Weather Statement | ILX | Sangamon | 35 min |
| Oct 11, 2:08 PM CDT | Special Weather Statement | ILX | Schuyler, Scott | 37 min |
| Oct 11, 2:27 PM CDT | Special Weather Statement | ILX | Crawford, Lawrence, Richland | 33 min |
| Oct 11, 2:50 PM CDT | Tornado Warning | ILX | Morgan | 25 min |
| Oct 11, 3:12 PM CDT | Tornado Warning | ILX | Morgan, Sangamon | 33 min |
| Oct 11, 3:32 PM CDT | Tornado Warning | ILX | Cass, Menard, Morgan, Sangamon | 30 min |
| Oct 11, 3:50 PM CDT | Tornado Warning | ILX | Fulton, Mason, Tazewell | 25 min |
| Oct 11, 4:21 PM CDT | Tornado Warning | ILX | Logan, Mason | 24 min |
| Oct 11, 4:47 PM CDT | Tornado Warning | ILX | Marshall, Woodford | 28 min |
| Oct 11, 4:56 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, Macon, Piatt | 49 min |
| Oct 11, 5:14 PM CDT | Severe Thunderstorm Warning | ILX | McLean, Woodford | 61 min |
| Oct 11, 5:38 PM CDT | Tornado Warning | ILX | Woodford | 20 min |
| Oct 11, 5:42 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, DeWitt, Douglas, McLean, Macon, Piatt | 63 min |
| Oct 11, 6:52 PM CDT | Special Weather Statement | ILX | Champaign, Douglas, Vermilion | 83 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.