Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 96, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Aug 23, 2021, 1:47 PM CDT for Cass County, Morgan County, Illinois. It was in force for 43 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
- Aug 23, 2021, 1:47 PM CDT (18:47 UTC)
- Expired
- Aug 23, 2021, 2:30 PM CDT
- In force
- 43 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cass County, IL, Morgan County, IL
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 6.8 hours before the alert went out and 136 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1261 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
039
WUUS53 KILX 231847
SVRILX
ILC017-137-231930-
/O.NEW.KILX.SV.W.0096.210823T1847Z-210823T1930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
147 PM CDT Mon Aug 23 2021
The National Weather Service in Lincoln has issued a
* Severe Thunderstorm Warning for...
Southeastern Cass County in west central Illinois...
Northeastern Morgan County in west central Illinois...
* Until 230 PM CDT.
* At 147 PM CDT, a severe thunderstorm was located near Bluff
Springs, or near Virginia, moving southeast at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Virginia around 200 PM CDT.
Other locations in the path of this severe thunderstorm include
Literberry, Ashland and Alexander.
This includes Interstate 72 between mile markers 71 and 79.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4004 9031 3997 9000 3972 8999 3966 8996
3965 8997 3986 9048
TIME...MOT...LOC 1847Z 298DEG 22KT 3994 9032
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SB2 follow-up statements
000
WWUS53 KILX 231914
SVSILX
Severe Weather Statement
National Weather Service Lincoln IL
214 PM CDT Mon Aug 23 2021
ILC017-137-231930-
/O.CON.KILX.SV.W.0096.000000T0000Z-210823T1930Z/
Cass-Morgan-
214 PM CDT Mon Aug 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
FOR SOUTHEASTERN CASS AND NORTHEASTERN MORGAN COUNTIES...
At 214 PM CDT, a severe thunderstorm was located near Literberry, or
7 miles southeast of Virginia, moving southeast at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Ashland and Alexander.
This includes Interstate 72 between mile markers 71 and 79.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4001 9023 3993 9000 3972 8999 3966 8996
3965 8997 3980 9033
TIME...MOT...LOC 1914Z 298DEG 22KT 3986 9013
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SB876
WWUS53 KILX 231930
SVSILX
Severe Weather Statement
National Weather Service Lincoln IL
230 PM CDT Mon Aug 23 2021
ILC017-137-231940-
/O.EXP.KILX.SV.W.0096.000000T0000Z-210823T1930Z/
Cass-Morgan-
230 PM CDT Mon Aug 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CASS AND
NORTHEASTERN MORGAN COUNTIES HAS EXPIRED...
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 has been allowed to expire.
LAT...LON 4001 9023 3993 9000 3972 8999 3966 8996
3965 8997 3980 9033
TIME...MOT...LOC 1930Z 298DEG 22KT 3982 9003
$$
SBThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 3:51 AM CDT | Dense Fog Advisory | ILX | Champaign, Christian, Clark, Clay, Coles, Crawford and 15 more | 4 hr |
| Aug 23, 12:49 PM CDT | Special Weather Statement | ILX | Schuyler | 26 min |
| Aug 23, 1:08 PM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 37 min |
| Aug 23, 1:26 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Schuyler | 34 min |
| Aug 23, 2:29 PM CDT | Special Weather Statement | ILX | Sangamon | 46 min |
| Aug 23, 2:53 PM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 5 days |
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.