Alert archive / Illinois / Tornado Warnings in 2021
Tornado Warning 21, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Oct 24, 2021, 5:17 PM CDT for Calhoun County, Greene County, Pike County, Illinois; Pike County, Missouri. It was in force for 43 min. 1 report 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, 5:17 PM CDT (22:17 UTC)
- Expired
- Oct 24, 2021, 6:00 PM CDT
- In force
- 43 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Calhoun County, IL, Greene County, IL, Pike County, IL, Pike County, MO
The radar
The St Louis radar (KLSX), 100 km from the middle of the area, began a volume at 22:19 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, 5:23 PM CDT | TSTM WND DMG | 1 Nne Pike, IL | AT LEAST 10 MEDIUM TO SMALL SIZED TREES UPROOTED NEAR HIGHWAY 54. |
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, 2:06 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.3 hours before the alert went out and 226 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
- 972 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
625
WFUS53 KLSX 242217
TORLSX
ILC013-061-149-MOC163-242300-
/O.NEW.KLSX.TO.W.0021.211024T2217Z-211024T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
517 PM CDT Sun Oct 24 2021
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Northwestern Calhoun County in southwestern Illinois...
Northwestern Greene County in southwestern Illinois...
Southeastern Pike County in west central Illinois...
Central Pike County in northeastern Missouri...
* Until 600 PM CDT.
* At 517 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Louisiana, moving northeast at 65 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...
Pleasant Hill around 525 PM CDT.
Pittsfield around 535 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Griggsville.
This includes Interstate 72 near exit 35.
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 3973 9063 3972 9064 3969 9065 3964 9061
3962 9061 3954 9057 3952 9058 3952 9057
3940 9057 3935 9115 3950 9119 3976 9061
TIME...MOT...LOC 2217Z 236DEG 58KT 3945 9108
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Glass4 follow-up statements
581
WWUS53 KLSX 242229
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
529 PM CDT Sun Oct 24 2021
ILC013-061-242238-
/O.CAN.KLSX.TO.W.0021.000000T0000Z-211024T2300Z/
Calhoun IL-Greene IL-
529 PM CDT Sun Oct 24 2021
...THE TORNADO WARNING FOR NORTHWESTERN CALHOUN AND NORTHWESTERN
GREENE COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for west central
Illinois...and northeastern Missouri.
LAT...LON 3973 9063 3972 9064 3969 9065 3964 9061
3962 9061 3954 9057 3953 9058 3950 9062
3944 9064 3942 9112 3955 9107 3976 9061
TIME...MOT...LOC 2228Z 237DEG 50KT 3953 9091
$$
ILC149-MOC163-242300-
/O.CON.KLSX.TO.W.0021.000000T0000Z-211024T2300Z/
Pike IL-Pike MO-
529 PM CDT Sun Oct 24 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHEASTERN PIKE COUNTY IN WEST CENTRAL ILLINOIS AND NORTH CENTRAL
PIKE COUNTIES IN NORTHEASTERN MISSOURI...
At 528 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Atlas, moving northeast at 55 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...
Pittsfield and Griggsville.
This includes Interstate 72 near exit 35.
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 3973 9063 3972 9064 3969 9065 3964 9061
3962 9061 3954 9057 3953 9058 3950 9062
3944 9064 3942 9112 3955 9107 3976 9061
TIME...MOT...LOC 2228Z 237DEG 50KT 3953 9091
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Glass727
WWUS53 KLSX 242235
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
535 PM CDT Sun Oct 24 2021
MOC163-242244-
/O.CAN.KLSX.TO.W.0021.000000T0000Z-211024T2300Z/
Pike MO-
535 PM CDT Sun Oct 24 2021
...THE TORNADO WARNING FOR NORTH CENTRAL PIKE COUNTY IN NORTHEASTERN
MISSOURI IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for west central
Illinois.
LAT...LON 3973 9063 3972 9064 3969 9065 3964 9061
3962 9061 3956 9058 3954 9066 3949 9080
3945 9101 3956 9105 3976 9061
TIME...MOT...LOC 2234Z 245DEG 33KT 3957 9083
$$
ILC149-242300-
/O.CON.KLSX.TO.W.0021.000000T0000Z-211024T2300Z/
Pike IL-
535 PM CDT Sun Oct 24 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHEASTERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
At 534 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Pittsfield, moving northeast at 40 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...
Pittsfield, Griggsville, Atlas, Independence, Martinsburg, Milton,
Detroit, Florence, Time, Valley City, New Hartford, Summer Hill and
Rockport.
This includes Interstate 72 near exit 35.
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 3973 9063 3972 9064 3969 9065 3964 9061
3962 9061 3956 9058 3954 9066 3949 9080
3945 9101 3956 9105 3976 9061
TIME...MOT...LOC 2234Z 245DEG 33KT 3957 9083
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Glass906
WWUS53 KLSX 242242
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
542 PM CDT Sun Oct 24 2021
ILC149-242300-
/O.CON.KLSX.TO.W.0021.000000T0000Z-211024T2300Z/
Pike IL-
542 PM CDT Sun Oct 24 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHEASTERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
At 542 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Pittsfield, moving northeast at 60 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Pittsfield, Griggsville, Independence, Martinsburg, Milton, Detroit,
Florence, Time and Valley City.
This includes Interstate 72 near exit 35.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3973 9063 3972 9064 3969 9065 3964 9061
3962 9061 3956 9058 3954 9066 3949 9080
3948 9084 3962 9092 3976 9061
TIME...MOT...LOC 2242Z 239DEG 53KT 3962 9069
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Glass829
WWUS53 KLSX 242259
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
559 PM CDT Sun Oct 24 2021
ILC149-242308-
/O.EXP.KLSX.TO.W.0021.000000T0000Z-211024T2300Z/
Pike IL-
559 PM CDT Sun Oct 24 2021
...THE TORNADO WARNING FOR SOUTHEASTERN PIKE COUNTY IN WEST CENTRAL
ILLINOIS WILL EXPIRE AT 600 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1000 PM CDT for west central
Illinois.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
St Louis.
LAT...LON 3973 9063 3972 9064 3969 9065 3964 9061
3962 9061 3956 9058 3954 9066 3949 9080
3948 9084 3962 9092 3976 9061
TIME...MOT...LOC 2258Z 236DEG 58KT 3976 9042
$$
GlassThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 24, 4:17 AM CDT | Areal Flood Advisory | LSX | Adams, Brown | 6 hr |
| Oct 24, 4:58 AM CDT | Flash Flood Warning | LSX | Adams | 2 hr |
| Oct 24, 4:03 PM CDT | Flash Flood Warning | LSX | Adams, Brown | 4 hr |
| Oct 24, 4:49 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 41 min |
| Oct 24, 5:14 PM CDT | Flash Flood Warning | LSX | Brown, Pike | 4 hr |
| Oct 24, 9:49 AM CDT | River Flood Warning | LSX | Marion | 23 hr |
| Oct 24, 5:03 PM CDT | River Flood Warning | LSX | Marion | 38 hr |
| Oct 24, 5:27 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Moniteau | 48 min |
| Oct 24, 6:36 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Montgomery, Ralls | 39 min |
| Oct 24, 6:37 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 38 min |
Nearby
Tornado Warnings in Illinois, 2021Tornado Warnings in Missouri, 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.