Alert archive / Missouri / Tornado Warnings in 2021
Tornado Warning 49, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Dec 10, 2021, 7:35 PM CST for 6 counties in Missouri; Calhoun County, Jersey County, Illinois. It was in force for 40 min. 20 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, 7:35 PM CST (01:35 UTC)
- Expired
- Dec 10, 2021, 8:15 PM CST
- In force
- 40 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 0.75 in
Counties Calhoun County, IL, Jersey County, IL, Franklin County, MO, Jefferson County, MO, Lincoln County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 5 km from the middle of the area, began a volume at 01:35 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, 7:35 PM CST | TSTM WND DMG | 3 Nnw Moselle, MO | NUMEROUS DAMAGED TREES, INCLUDING ONE LARGE TREE THAT WAS UPROOTED, DAMAGE TO A CARPORT, SOME ROOF DAMAGE. PHOTOS PROVIDED FOR CARPORT, TREE DAMAGE. |
| Dec 10, 7:36 PM CST | TSTM WND DMG | 4 Nne Stanton, MO | FRANKLIN COUNTY DISPATCH REPORTED A LARGE TREE BLOCKING THE ROADWAY ALONG ST. LOUIS INN ROAD WSW OF ST. CLAIR. TIME ESTIMATED FROM RADAR. |
| Dec 10, 7:38 PM CST | TSTM WND DMG | 1 Sw Union, MO | FRANKLIN COUNTY DISPATCH REPORTED POWER LINES DOWN AT KOELLING AVENUE AND WEST SPRINGFIELD AVENUE IN SW UNION. TIME ESTIMATED FROM RADAR. |
| Dec 10, 7:38 PM CST | TSTM WND DMG | 3 N Saint Clair, MO | FRANKLIN COUNTY DISPATCH REPORTED A TREE DOWN ON HWY 47 AT EASTVIEW DRIVE SOUTH OF UNION. TIME ESTIMATED FROM RADAR. |
| Dec 10, 7:40 PM CST | TSTM WND DMG | 1 Nw Defiance, MO | BUILDING COLLAPSE AS WELL AS REPORTS OF MULTIPLE HOMES DAMAGED AND DEBRIS IN THE AREA. |
| Dec 10, 7:40 PM CST | TORNADO | 1 Nw Defiance, MO | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 NW DEFIANCE. BUILDING COLLAPSE AS WELL AS REPORTS OF MULTIPLE HOMES DAMAGED AND DEBRIS IN THE AREA. |
| Dec 10, 7:40 PM CST | TORNADO | 2 W Defiance, MO | SIGNIFICANT DAMAGE TO HOME AT HIGHWAY F AND STUB ROAD. |
| Dec 10, 7:44 PM CST | TSTM WND DMG | 3 Nnw Moselle, MO | FRANKLIN COUNTY DISPATCH REPORTED POWER LINES DOWN AT DENMARK ROAD AT FAIRWAY DRIVE. TIME ESTIMATED FROM RADAR. |
| Dec 10, 7:45 PM CST | TORNADO | 1 Nne Defiance, MO | *** 1 FATAL, 2 INJ *** SIGNIFICANT STRUCTURE DAMAGE IN DEFIANCE. ONE CONFIRMED FATALITY AND 2 INJURIES. |
| Dec 10, 7:47 PM CST | TSTM WND DMG | 2 Nw Pacific, MO | FRANKLIN COUNTY DISPATCH REPORTED A TREE DOWN ON THORNTON ROAD AT SKYLINE DRIVE. TIME ESTIMATED FROM RADAR. |
| Dec 10, 7:50 PM CST | TSTM WND DMG | 2 Ssw Weldon Spring, MO | REPORT OF APPROXIMATELY 20 VEHICLES WITH DEBRIS DAMAGE ON EASTBOUND 64 EAST OF BOONE BRIDGE. |
| Dec 10, 7:50 PM CST | TORNADO | 2 Ssw Weldon Spring, MO | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 SSW WELDON SPRING. REPORT OF APPROXIMATELY 20 VEHICLES WITH DEBRIS DAMAGE ON EASTBOUND 64 EAST OF BOONE BRIDGE. |
| Dec 10, 7:53 PM CST | TSTM WND DMG | 1 Ese Gray Summit, MO | FRANKLIN COUNTY DISPATCH REPORTED A TREE OVER HOGAN ROAD IN PACIFIC. TIME ESTIMATED FROM RADAR. |
| Dec 10, 7:55 PM CST | NON-TSTM WND GST 45 | 2 E Chesterfield, MO | WINDS REPORTED AT 45 MPH IN CHESTERFIELD. |
| Dec 10, 7:56 PM CST | TSTM WND GST 70 | 4 W Chesterfield, MO | ST. LOUIS/SPIRIT,MO (SUS) ASOS REPORTS GUST OF 61.0 KNOTS FROM SW @ 0156Z KSUS 110156Z 22028G61KT 1/2SM R08R/2800VP6000FT +RA FG SQ SCT026 BKN070 OVC100 17/16 A2947 RMK AO2 PK WND 22048/0155 LTG DSNT ALQDS PRESRR P0009 T01670156. |
| Dec 10, 8:00 PM CST | HAIL 1 | 1 E Ballwin, MO | QUARTER SIZED HAIL REPORTED IN BALLWIN. |
| Dec 10, 8:02 PM CST | TSTM WND GST 68 | 3 E Kampville, MO | ST. CHARLES,MO (SET) ASOS REPORTS GUST OF 59.0 KNOTS FROM W @ 0202Z KSET 110205Z AUTO 28026G59KT 3/4SM +TSRA BR BKN029 BKN070 OVC090 17/15 A2945 RMK AO2 PK WND 28059/0202 WSHFT 0151 LTG DSNT ALQDS P0025 T01720150. |
| Dec 10, 8:04 PM CST | TSTM WND DMG | 1 Nw Creve Coeur, MO | LARGE TREE UPROOTED, FELL ON TO APARTMENT BUILDING. |
| Dec 10, 8:09 PM CST | TSTM WND DMG | Jerseyville, IL | JERSEY COUNTY DISPATCH REPORTED A METAL SIGN AND TREE LIMB DOWN ACROSS THE ROAD AT STATE HWY 16 IN JERSEYVILLE. TIME ESTIMATED USING RADAR. |
| Dec 10, 8:20 PM CST | TSTM WND DMG | 3 Ssw Weldon Spring, MO | FENCE BLOWN DOWN NEAR CHESTERFIELD MALL. |
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, 3:07 PM CST | Tornado Watch | SPC | 11 hr |
| Dec 10, 5:17 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.6 hours before the alert went out and 236 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.
040
WFUS53 KLSX 110135
TORLSX
ILC013-083-MOC071-099-113-183-189-219-110215-
/O.NEW.KLSX.TO.W.0049.211211T0135Z-211211T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
735 PM CST Fri Dec 10 2021
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southeastern Calhoun County in southwestern Illinois...
Southwestern Jersey County in southwestern Illinois...
St. Charles County in east central Missouri...
Northwestern Jefferson County in east central Missouri...
Southeastern Lincoln County in east central Missouri...
Eastern Franklin County in east central Missouri...
St. Louis County in east central Missouri...
Southeastern Warren County in east central Missouri...
* Until 815 PM CST.
* At 734 PM CST, a tornado producing storm was located over Augusta,
moving east at 50 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
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 tornadic storm will be near...
Defiance around 745 PM CST.
Wildwood, Spirit of St. Louis Airport and Weldon Spring Heights
around 750 PM CST.
Other locations in the path of this tornadic thunderstorm include St.
Peters, Ballwin, Ellisville, Weldon Spring, Cottleville, Clarkson
Valley, Winchester, Chesterfield, Manchester, Town and Country,
Harvester, Kirkwood, Maryland Heights, Ladue, Des Peres, Frontenac,
Warson Woods, Crystal Lake Park, Huntleigh, Westwood, Country Life
Acres, University City, Creve Coeur, Overland, Clayton, St. Ann,
Bridgeton, Richmond Heights, Brentwood, Maplewood, Olivette,
Florissant, Hazelwood, Berkeley, Bel-Ridge, Kinloch, Pagedale and
Bel-Nor.
This also includes Babler Memorial State Park, Route 66 State Park,
Castlewood State Park, First Missouri State Capitol Historic Site,
Robertsville State Park, and Pere Marquette State Park.
This includes the following highways...
Interstate 44 in Missouri between exits 239 and 277.
Interstate 70 in Missouri between exits 200 and 231.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. 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 3855 9033 3828 9115 3884 9102 3901 9069
3913 9030
TIME...MOT...LOC 0134Z 252DEG 43KT 3860 9090
TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN
$$
191 follow-up statement
449
WWUS53 KLSX 110201
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
801 PM CST Fri Dec 10 2021
MOC071-099-113-219-110210-
/O.CAN.KLSX.TO.W.0049.000000T0000Z-211211T0215Z/
Jefferson MO-Lincoln MO-Franklin MO-Warren MO-
801 PM CST Fri Dec 10 2021
...THE TORNADO WARNING FOR NORTHWESTERN JEFFERSON...SOUTHEASTERN
LINCOLN...EASTERN FRANKLIN AND SOUTHEASTERN WARREN COUNTIES IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1100 PM CST for east central
Missouri. A Tornado Watch also remains in effect until 1100 PM CST
for southwestern Illinois...and east central Missouri.
LAT...LON 3855 9033 3848 9074 3892 9071 3892 9069
3893 9070 3894 9066 3901 9069 3913 9030
TIME...MOT...LOC 0200Z 243DEG 53KT 3874 9050
$$
ILC013-083-MOC183-189-110215-
/O.CON.KLSX.TO.W.0049.000000T0000Z-211211T0215Z/
Calhoun IL-Jersey IL-St. Charles MO-St. Louis MO-
801 PM CST Fri Dec 10 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CST FOR
SOUTHEASTERN CALHOUN...SOUTHWESTERN JERSEY...NORTH CENTRAL ST.
CHARLES AND ST. LOUIS COUNTIES...
At 800 PM CST, a confirmed tornado was located over Maryland Heights,
moving northeast at 60 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
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...
University City, Overland, St. Ann, Bridgeton, Olivette, St. John,
Lambert-St. Louis International Airport, Breckenridge Hills,
Hanley Hills, Vinita Park, Florissant, Hazelwood, Berkeley,
Woodson Terrace, Bel-Ridge, Kinloch and Bel-Nor.
This also includes Babler Memorial State Park, Route 66 State Park,
Castlewood State Park, First Missouri State Capitol Historic Site,
and Pere Marquette State Park.
This includes the following highways...
Interstate 44 in Missouri between exits 261 and 265, and between
exits 269 and 277.
Interstate 70 in Missouri between exits 217 and 231.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. 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 3855 9033 3848 9074 3892 9071 3892 9069
3893 9070 3894 9066 3901 9069 3913 9030
TIME...MOT...LOC 0200Z 243DEG 53KT 3874 9050
TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN
$$
19The 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, 7:00 PM CST | Tornado Warning | LSX | Gasconade, Lincoln, Montgomery, Pike, Warren | 45 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, 7:49 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 |
| Dec 10, 7:16 PM CST | Tornado Warning | LSX | Pike | 14 min |
| Dec 10, 7:36 PM CST | Tornado Warning | LSX | Pike | 21 min |
| Dec 10, 8:33 PM CST | Tornado Warning | LSX | Bond, Madison | 42 min |
| Dec 10, 8:37 PM CST | Tornado Warning | LSX | Macoupin, Madison | 17 min |
| Dec 10, 8:44 PM CST | Tornado Warning | LSX | Fayette, Macoupin, Madison, Montgomery | 46 min |
| Dec 10, 8:56 PM CST | Tornado Warning | LSX | Bond, Fayette, Montgomery | 34 min |
| Dec 10, 10:18 PM CST | Severe Thunderstorm Warning | LSX | Bond, Fayette, Macoupin, Madison, Montgomery | 57 min |
| Dec 10, 10:26 PM CST | Tornado Warning | LSX | Bond, Fayette, Montgomery | 49 min |
| Dec 10, 10:51 PM CST | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair, Washington | 39 min |
| Dec 10, 11:02 PM CST | Tornado Warning | LSX | Fayette | 29 min |
| Dec 10, 11:10 PM CST | Tornado Warning | LSX | Clinton, Marion, Washington | 50 min |
Nearby
Tornado Warnings in Missouri, 2021Tornado 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.