Alert archive / Illinois / Tornado Warnings in 2021
Tornado Warning 31, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Oct 24, 2021, 9:00 PM CDT for 4 counties in Illinois. It was in force for 45 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 24, 2021, 9:00 PM CDT (02:00 UTC)
- Expired
- Oct 24, 2021, 9:45 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Clinton County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 114 km from the middle of the area, began a volume at 02:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 24, 9:41 PM CDT | TSTM WND DMG | New Minden, IL | WIND BLEW CAR OFF ROAD. |
| Oct 24, 9:54 PM CDT | TORNADO | 2 Nw Richview, IL | TREES UPROOTED AND SNAPPED NEAR I-64 AT MILE MARKER 59.5. LARGE TREE ON RESIDENCE ON CHESTNUT ROAD. BARN ROOF RIPPED OFF. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 24, 5:44 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 2.0 hours before the alert went out and 221 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
- 3 J/kg
- Mixed-layer CIN
- -286 J/kg
- Mixed-layer LCL
- 585 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 371 m²/s²
- 0-3 km storm-relative helicity
- 467 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.1
The text
As transmitted.
372
WFUS53 KLSX 250200
TORLSX
ILC027-157-163-189-250245-
/O.NEW.KLSX.TO.W.0031.211025T0200Z-211025T0245Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
900 PM CDT Sun Oct 24 2021
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southeastern Clinton County in south central Illinois...
Washington County in south central Illinois...
Northeastern Randolph County in southwestern Illinois...
Southeastern St. Clair County in southwestern Illinois...
* Until 945 PM CDT.
* At 900 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Marissa, moving northeast at 45 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Coulterville around 905 PM CDT.
Lively Grove around 910 PM CDT.
Okawville around 920 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Nashville.
This includes Interstate 64 in Illinois between exits 41 and 50.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3828 8920 3821 8949 3822 8959 3819 8959
3815 8977 3832 8982 3865 8918
TIME...MOT...LOC 0200Z 240DEG 39KT 3825 8975
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Glass2 follow-up statements
962
WWUS53 KLSX 250219
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
919 PM CDT Sun Oct 24 2021
ILC157-163-250229-
/O.CAN.KLSX.TO.W.0031.000000T0000Z-211025T0245Z/
Randolph IL-St. Clair IL-
919 PM CDT Sun Oct 24 2021
...THE TORNADO WARNING FOR NORTHEASTERN RANDOLPH AND SOUTHEASTERN ST.
CLAIR COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 100 AM CDT for south central
Illinois.
LAT...LON 3831 8920 3825 8944 3824 8951 3825 8957
3827 8962 3842 8957 3865 8918
TIME...MOT...LOC 0219Z 247DEG 41KT 3831 8951
$$
ILC027-189-250245-
/O.CON.KLSX.TO.W.0031.000000T0000Z-211025T0245Z/
Clinton IL-Washington IL-
919 PM CDT Sun Oct 24 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR
SOUTHEASTERN CLINTON AND CENTRAL WASHINGTON COUNTIES...
At 919 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lively Grove, moving east at 45 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Nashville.
This includes Interstate 64 in Illinois between exits 41 and 50.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3831 8920 3825 8944 3824 8951 3825 8957
3827 8962 3842 8957 3865 8918
TIME...MOT...LOC 0219Z 247DEG 41KT 3831 8951
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Glass474
WWUS53 KLSX 250243
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
943 PM CDT Sun Oct 24 2021
ILC027-189-250253-
/O.EXP.KLSX.TO.W.0031.000000T0000Z-211025T0245Z/
Clinton IL-Washington IL-
943 PM CDT Sun Oct 24 2021
...THE TORNADO WARNING FOR SOUTHEASTERN CLINTON AND CENTRAL
WASHINGTON COUNTIES WILL EXPIRE AT 945 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 100 AM CDT for south central
Illinois.
LAT...LON 3831 8920 3825 8944 3824 8951 3825 8957
3827 8962 3842 8957 3865 8918
TIME...MOT...LOC 0243Z 240DEG 39KT 3844 8922
$$
GlassThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 24, 7:39 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 51 min |
| Oct 24, 7:59 PM CDT | River Flood Warning | LSX | Brown | 33 hr |
| Oct 24, 8:03 PM CDT | Tornado Warning | LSX | Monroe, Randolph | 42 min |
| Oct 24, 8:27 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 48 min |
| Oct 24, 8:34 PM CDT | Tornado Warning | LSX | Randolph | 41 min |
| Oct 24, 9:08 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 54 min |
| Oct 24, 9:08 PM CDT | Tornado Warning | LSX | Randolph | 40 min |
| Oct 24, 9:15 PM CDT | Tornado Warning | LSX | Randolph | 19 min |
| Oct 24, 9:33 PM CDT | Tornado Warning | LSX | Saint Clair | 30 min |
| Oct 24, 9:48 PM CDT | Tornado Warning | LSX | Bond, Clinton, Madison | 42 min |
| Oct 24, 9:58 PM CDT | Tornado Warning | LSX | Marion, Washington | 16 min |
| Oct 24, 10:13 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion | 62 min |
| Oct 24, 10:40 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 26 min |
Nearby
Tornado Warnings in Illinois, 2021Every tornado warning in 2021Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.