Alert archive / Missouri / Tornado Warnings in 2021
Tornado Warning 43, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Dec 10, 2021, 7:00 PM CST for 5 counties in Missouri. 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
- Dec 10, 2021, 7:00 PM CST (01:00 UTC)
- Expired
- Dec 10, 2021, 7:45 PM CST
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Gasconade County, MO, Lincoln County, MO, Montgomery County, MO, Pike County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 41 km from the middle of the area, began a volume at 01:03 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 |
|---|---|---|---|
| Dec 10, 7:40 PM CST | TSTM WND DMG | Winfield, MO | LINCOLN COUNTY DISPATCH REPORTED STREET LIGHTS WERE BLOWN OVER AT 2 LOCATIONS IN WINFIELD. TIME ESTIMATED USING RADAR. |
| Dec 10, 7:40 PM CST | TSTM WND DMG | Winfield, MO | MULTIPLE STREET LIGHTS BLOWN OUT ACROSS THE CITY. |
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 |
|---|---|---|---|
| Dec 10, 5:17 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.0 hours before the alert went out and 261 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
- 119 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 341 m²/s²
- 0-3 km storm-relative helicity
- 357 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
299
WFUS53 KLSX 110100
TORLSX
MOC073-113-139-163-219-110145-
/O.NEW.KLSX.TO.W.0043.211211T0100Z-211211T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
700 PM CST Fri Dec 10 2021
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Lincoln County in east central Missouri...
Southern Montgomery County in east central Missouri...
Central Warren County in east central Missouri...
Southeastern Pike County in northeastern Missouri...
Northeastern Gasconade County in east central Missouri...
* Until 745 PM CST.
* At 700 PM CST, a severe thunderstorm capable of producing a tornado
was located over Hermann, 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...
Jonesburg around 710 PM CST.
Warrenton and Truesdale around 720 PM CST.
Other locations in the path of this tornadic thunderstorm include
Wright City, Troy, Moscow Mills, Fountain N' Lakes and Winfield.
This also includes Deutschheim Historic Site and Cuivre River State
Park.
This includes Interstate 70 in Missouri between exits 179 and 200.
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 3899 9069 3889 9090 3889 9095 3885 9096
3869 9129 3871 9131 3870 9137 3865 9137
3858 9150 3876 9160 3934 9085
TIME...MOT...LOC 0100Z 239DEG 58KT 3870 9145
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Britt2 follow-up statements
993
WWUS53 KLSX 110118
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
718 PM CST Fri Dec 10 2021
MOC073-110127-
/O.CAN.KLSX.TO.W.0043.000000T0000Z-211211T0145Z/
Gasconade MO-
718 PM CST Fri Dec 10 2021
...THE TORNADO WARNING FOR NORTHEASTERN GASCONADE COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1100 PM CST for northeastern
and east central Missouri.
LAT...LON 3899 9069 3889 9090 3889 9095 3885 9096
3869 9129 3871 9131 3883 9132 3900 9129
3934 9085
TIME...MOT...LOC 0117Z 235DEG 61KT 3888 9116
$$
MOC113-139-163-219-110145-
/O.CON.KLSX.TO.W.0043.000000T0000Z-211211T0145Z/
Lincoln MO-Montgomery MO-Warren MO-Pike MO-
718 PM CST Fri Dec 10 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CST FOR
LINCOLN...EAST CENTRAL MONTGOMERY...NORTHEASTERN WARREN COUNTIES IN
EAST CENTRAL MISSOURI AND SOUTHEASTERN PIKE COUNTIES IN NORTHEASTERN
MISSOURI...
At 717 PM CST, a severe thunderstorm capable of producing a tornado
was located near Warrenton, moving northeast at 70 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...
Troy, Moscow Mills, Davis, Fountain N' Lakes, Winfield and
Elsberry.
This also includes Cuivre River State Park.
This includes Interstate 70 in Missouri between exits 183 and 200.
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.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 3899 9069 3889 9090 3889 9095 3885 9096
3869 9129 3871 9131 3883 9132 3900 9129
3934 9085
TIME...MOT...LOC 0117Z 235DEG 61KT 3888 9116
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Britt555
WWUS53 KLSX 110144
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
744 PM CST Fri Dec 10 2021
MOC113-139-163-219-110154-
/O.EXP.KLSX.TO.W.0043.000000T0000Z-211211T0145Z/
Lincoln MO-Montgomery MO-Warren MO-Pike MO-
744 PM CST Fri Dec 10 2021
...THE TORNADO WARNING FOR LINCOLN...EAST CENTRAL MONTGOMERY...
NORTHEASTERN WARREN COUNTIES IN EAST CENTRAL MISSOURI AND
SOUTHEASTERN PIKE COUNTIES IN NORTHEASTERN MISSOURI WILL EXPIRE AT
745 PM CST...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning will be allowed to
expire.
A Tornado Watch remains in effect until 1100 PM CST for northeastern
and east central Missouri.
LAT...LON 3899 9069 3889 9090 3889 9095 3885 9096
3869 9129 3871 9131 3883 9132 3900 9129
3934 9085
TIME...MOT...LOC 0144Z 239DEG 58KT 3910 9069
$$
BrittThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 10, 6:13 PM CST | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau | 47 min |
| Dec 10, 6:18 PM CST | Severe Thunderstorm Warning | LSX | Cole, Osage | 42 min |
| Dec 10, 6:27 PM CST | Tornado Warning | LSX | Audrain, Callaway | 34 min |
| Dec 10, 6:30 PM CST | Tornado Warning | LSX | Callaway, Cole, Gasconade, Montgomery, Osage | 45 min |
| Dec 10, 6:42 PM CST | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Osage | 48 min |
| Dec 10, 6:42 PM CST | Tornado Warning | LSX | Pike | 48 min |
| Dec 10, 6:49 PM CST | Tornado Warning | LSX | Franklin, Gasconade, Osage, Warren | 41 min |
| Dec 10, 6:50 PM CST | Tornado Warning | LSX | Audrain, Callaway, Montgomery, Pike, Ralls | 40 min |
| Dec 10, 7:02 PM CST | Tornado Warning | LSX | Crawford, Franklin, Gasconade | 43 min |
| Dec 10, 7:11 PM CST | Tornado Warning | LSX | Lincoln, Montgomery, Pike | 49 min |
| Dec 10, 7:16 PM CST | Tornado Warning | LSX | Franklin, Lincoln, Saint Charles, Warren | 44 min |
| Dec 10, 7:30 PM CST | Tornado Warning | LSX | Lincoln | 45 min |
| Dec 10, 7:35 PM CST | Tornado Warning | LSX | Franklin, Jefferson, Lincoln, Saint Charles, Saint Louis, Warren | 40 min |
| Dec 10, 7:49 PM CST | Severe Thunderstorm Warning | LSX | Crawford, Washington | 26 min |
| Dec 10, 8:06 PM CST | Tornado Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 39 min |
| Dec 10, 8:10 PM CST | Severe Thunderstorm Warning | LSX | Franklin | 35 min |
| Dec 10, 8:29 PM CST | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis, City of Saint Louis | 30 min |
| Dec 10, 8:34 PM CST | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Osage | 41 min |
| Dec 10, 8:47 PM CST | Tornado Warning | LSX | Franklin, Gasconade, Warren | 43 min |
| Dec 10, 9:07 PM CST | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Lincoln, Saint Charles, Saint Louis, Warren and 1 more | 38 min |
| Dec 10, 9:39 PM CST | Tornado Warning | LSX | Saint Charles, Saint Louis | 51 min |
| Dec 10, 10:00 PM CST | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 45 min |
| Dec 10, 10:05 PM CST | Severe Thunderstorm Warning | LSX | City of Saint Louis | 25 min |
| Dec 10, 10:14 PM CST | Tornado Warning | LSX | Iron, Madison, Reynolds | 46 min |
| Dec 10, 10:19 PM CST | Severe Thunderstorm Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois | 41 min |
| Dec 10, 10:26 PM CST | Severe Thunderstorm Warning | LSX | Reynolds | 20 min |
| Dec 10, 10:55 PM CST | Severe Thunderstorm Warning | LSX | Madison | 18 min |
Nearby
Tornado 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.