Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 54, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 27, 2021, 2:31 PM CDT for Clinton County, Fayette County, Marion County, Illinois. It was in force for 44 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
- May 27, 2021, 2:31 PM CDT (19:31 UTC)
- Expired
- May 27, 2021, 3:15 PM CDT
- In force
- 44 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Clinton County, IL, Fayette County, IL, Marion County, IL
The radar
The Evansville,IN radar (KVWX), 124 km from the middle of the area, began a volume at 19:31 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 |
|---|---|---|---|
| May 27, 11:26 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 7.5 hours before the alert went out and 166 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
- 1679 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
924
WUUS53 KLSX 271931
SVRLSX
ILC027-051-121-272015-
/O.NEW.KLSX.SV.W.0054.210527T1931Z-210527T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
231 PM CDT Thu May 27 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northeastern Clinton County in south central Illinois...
Marion County in south central Illinois...
Southern Fayette County in south central Illinois...
* Until 315 PM CDT.
* At 231 PM CDT, severe thunderstorms were located along a line
extending from near Brownstown to 6 miles west of Kinmundy to near
Carlyle, moving east at 30 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...
Kinmundy and Boulder around 245 PM CDT.
Farina and Omega around 250 PM CDT.
Other locations in the path of these severe thunderstorms include
Centralia, Wamac, Central City, Stephen Forbes Station, Sandoval,
Fairman, Odin and Salem.
This includes the following highways...
Interstate 70 in Illinois between exits 61 and 68.
Interstate 57 in Illinois between exits 109 and 135.
This also includes Carlyle Lake Recreational Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3847 8914 3850 8915 3851 8922 3863 8947
3881 8913 3898 8917 3899 8881 3891 8881
3891 8869 3848 8870
TIME...MOT...LOC 1931Z 266DEG 24KT 3896 8901 3880 8897 3859 8935
HAIL...0.88IN
WIND...60MPH
$$
MRM2 follow-up statements
314
WWUS53 KLSX 271950
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
250 PM CDT Thu May 27 2021
ILC027-051-121-272015-
/O.CON.KLSX.SV.W.0054.000000T0000Z-210527T2015Z/
Clinton IL-Marion IL-Fayette IL-
250 PM CDT Thu May 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR NORTHEASTERN CLINTON...MARION AND SOUTHEASTERN FAYETTE
COUNTIES...
At 250 PM CDT, severe thunderstorms were located along a line
extending from near Edgewood to Omega to near Shattuc, moving east at
30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Kinmundy, Omega, Stephen Forbes Station, Centralia, Odin and
Salem.
This also includes Carlyle Lake Recreational Area.
This includes Interstate 57 in Illinois between exits 109 and 135.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3854 8928 3872 8929 3881 8913 3895 8881
3891 8881 3891 8869 3848 8870 3847 8914
3850 8915 3851 8922
TIME...MOT...LOC 1950Z 271DEG 27KT 3893 8872 3870 8879 3864 8924
TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
$$
MRM218
WWUS53 KLSX 272012
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
312 PM CDT Thu May 27 2021
ILC027-051-121-272022-
/O.EXP.KLSX.SV.W.0054.000000T0000Z-210527T2015Z/
Clinton IL-Marion IL-Fayette IL-
312 PM CDT Thu May 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLINTON...MARION
AND SOUTHEASTERN FAYETTE COUNTIES WILL EXPIRE AT 315 PM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
south central Illinois.
LAT...LON 3854 8928 3872 8929 3881 8913 3895 8881
3891 8881 3891 8869 3848 8870 3847 8914
3850 8915 3851 8922
TIME...MOT...LOC 2012Z 266DEG 24KT 3894 8855 3871 8862 3865 8907
$$
CarneyThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 11:13 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey | 47 min |
| May 27, 11:32 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 43 min |
| May 27, 11:50 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison, Saint Clair | 55 min |
| May 27, 12:07 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin, Montgomery | 38 min |
| May 27, 12:26 PM CDT | Tornado Warning | LSX | Macoupin, Madison | 34 min |
| May 27, 12:39 PM CDT | Areal Flood Advisory | LSX | Calhoun, Madison | 3 hr |
| May 27, 12:56 PM CDT | Tornado Warning | LSX | Bond, Macoupin, Madison, Montgomery | 28 min |
| May 27, 2:16 PM CDT | Areal Flood Advisory | LSX | Bond, Fayette | 3 hr |
| May 27, 2:46 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 29 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.