Severe WX December 10 & 11, 2021 Severe Threat

[Taylor Campbell]

The worst hit just north of the most populated portion, but a row of houses along the roadway and big buildings might have got smacked.

Very bad news for what may be a violent tornado.

 

[Jacob]

Embedded supercell coming up on the western side of St Louis is ramping up quickly

This storm is going to be extremely close to the KLSX radar

 

[TornadoFan]

It's still looking extremely strong on radar.

 

[TH2002]

Massive debris ball appeared as it hit Leachville.

 

[akt1985]

The tornado-warned storm that hit Leachville has been extended almost to Dyersburg, Tennessee.

 

[Jetstream]

Cell getting its act together west of STL Mo.

 

[Tennie]

Radar-confirmed tornado on the cell coming toward St. Louis!

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

$$

19

 

[warneagle]

Still an extremely strong velocity signature and TDS. It's gonna be a really close call for Hornersville.

 

[Taylor Campbell]

The Vilonia storm didn’t wrap up, but new circulation further south near Little Rock Air Force Base just got tornado warned.

 

[SilentShadow87]

Looks like Hornersville's about to get hit.

 

[Austin Dawg]

The tornado-warned storm that hit Leachville has been extended almost to Dyersburg, Tennessee.

That cell's all by itself with nothing to keep it from continuing to strengthen and continuing to recycle

 

[warneagle]

KAIT says spotters continue to confirm wedge tornado.

 

[OHWX97]

Approaching KLSX and the St. Louis metro area... holy cow.

 

[warneagle]

Tornado warnings near Branson, MO and Fayetteville, AR as well, back closer to the front.

 

[akt1985]

Saint Louis has been a magnet for tornadoes since the late 19th Century.

 

[TH2002]

The cell is not letting up much as it's crossing into the boot of Missouri...

 

[TornadoFan]

You hate to see this.

 

[cincywx]

Mesoscale Discussion 1992
NWS Storm Prediction Center Norman OK
0741 PM CST Fri Dec 10 2021

Areas affected...Northeast Arkansas...southern Missouri...northwest
Tennessee...and southwest Kentucky.

Concerning...Tornado Watch 552...

Valid 110141Z - 110245Z

The severe weather threat for Tornado Watch 552 continues.

SUMMARY...A strong to potentially violent tornado is ongoing in far
northeastern Arkansas and is expected to persist.

DISCUSSION...A mature and very strong supercell in northeast
Arkansas is currently producing a very strong to potentially violent
tornado. The downstream airmass remains very favorable with
dewpoints near 70, strengthening/backing surface flow, and 0-1 km
SRH in excess of 400 m2/s2 per KNQA VWP. This is yielding STP around
5. Given the favorable downstream environment with no convection to
disrupt this storm, expect the significant tornado threat to
continue for at least a few more hours as this discrete, long-track
supercell continues northeast.

 

[warneagle]

New tornado watch for east-central IL and west-central IN, including Peoria and Indianapolis.

 

[TH2002]

I'm thinking if this holds together we could have another Tri-State Tornado.