Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 199, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Dec 15, 2021, 8:34 PM CST for 6 counties in Missouri. It was in force for 41 min. 7 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 15, 2021, 8:34 PM CST (02:34 UTC)
- Expired
- Dec 15, 2021, 9:15 PM CST
- In force
- 41 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Moniteau County, MO, Monroe County, MO, Ralls County, MO
The radar
The St Louis radar (KLSX), 144 km from the middle of the area, began a volume at 02:36 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 15, 8:44 PM CST | TSTM WND DMG | 1 Ne Harrisburg, MO | TREE BLOWN DOWN ONTO ROUTE F AT INTERSECTION WITH STIDHAM ROAD. |
| Dec 15, 8:53 PM CST | TSTM WND DMG | 7 Wsw Hallsville, MO | TEN INCH DIAMETER TREE BLOWN OVER ONTO OLD HIGHWAY 63 NEAR DRIPPING SPRINGS ROAD. |
| Dec 15, 8:59 PM CST | TSTM WND DMG | 1 Nw Columbia, MO | POWER LINES DOWN AT PROVIDENCE AND WILKES. |
| Dec 15, 8:59 PM CST | TSTM WND DMG | 4 S Columbia, MO | SEVERAL TREES BLOWN DOWN ACROSS OLD PLANK ROAD NEAR INTERSECTION WITH ROUTE K. THE TREES ARE OVER A FOOT IN DIAMETER. |
| Dec 15, 9:00 PM CST | TSTM WND DMG | Columbia, MO | STREET LIGHT SNAPPED AND BLOCKING ROADWAY AT 7TH AND CHERRY. |
| Dec 15, 9:06 PM CST | TSTM WND DMG | 7 Ese Columbia, MO | TREE WAS BLOWN OVER ONTO ROADWAY AT INTERSECTION OF HIGHWAY WW AND S. RANGELINE ROAD. |
| Dec 15, 9:13 PM CST | TSTM WND GST 57 | 3 Ne Ashland, MO | COLUMBIA REGIONAL AIRPORT. |
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 15, 6:00 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 2.6 hours before the alert went out and 280 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
- 9 J/kg
- Mixed-layer CIN
- -387 J/kg
- Mixed-layer LCL
- 1246 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 310 m²/s²
- 0-3 km storm-relative helicity
- 677 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
631
WUUS53 KLSX 160234
SVRLSX
MOC007-019-027-135-137-173-160315-
/O.NEW.KLSX.SV.W.0199.211216T0234Z-211216T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
834 PM CST Wed Dec 15 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northwestern Ralls County in northeastern Missouri...
Boone County in central Missouri...
Western Audrain County in central Missouri...
Northwestern Callaway County in central Missouri...
Monroe County in northeastern Missouri...
Central Moniteau County in central Missouri...
* Until 915 PM CST.
* At 834 PM CST, severe thunderstorms were located along a line
extending from near Higbee to near Tipton, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Madison around 850 PM CST.
Other locations in the path of these severe thunderstorms include
Jamestown, Paris, Easley, Ashland and Columbia Regional Airport.
This includes Interstate 70 in Missouri between exits 115 and 148.
This also includes Rock Bridge State Park, Finger Lakes State Park,
Union Covered Bridge Historic Site, Jewell Cemetery Historic Site,
and Mark Twain Lake Recreational Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3869 9284 3868 9262 3892 9250 3899 9257
3924 9243 3925 9231 3955 9230 3966 9184
3966 9172 3969 9171 3968 9153 3967 9153
3881 9200 3872 9235 3874 9239 3871 9240
3860 9284
TIME...MOT...LOC 0234Z 248DEG 46KT 3934 9242 3869 9277
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Elmore2 follow-up statements
816
WWUS53 KLSX 160251
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
851 PM CST Wed Dec 15 2021
MOC007-019-027-135-137-173-160315-
/O.CON.KLSX.SV.W.0199.000000T0000Z-211216T0315Z/
Ralls MO-Boone MO-Audrain MO-Callaway MO-Monroe MO-Moniteau MO-
851 PM CST Wed Dec 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CST
FOR NORTHWESTERN RALLS...BOONE...WESTERN AUDRAIN...NORTHWESTERN
CALLAWAY...MONROE AND NORTHEASTERN MONITEAU COUNTIES...
At 851 PM CST, severe thunderstorms were located along a line
extending from near Madison to near Jamestown, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Madison, Granville, Ashland, Paris, Columbia Regional Airport,
Fulton, Monroe City, Auxvasse and Rensselaer.
This also includes Rock Bridge State Park, Finger Lakes State Park,
Union Covered Bridge Historic Site, Jewell Cemetery Historic Site,
and Mark Twain Lake Recreational Area.
This includes Interstate 70 in Missouri between exits 115 and 148.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3868 9262 3892 9250 3899 9257 3924 9243
3925 9231 3955 9230 3966 9184 3966 9172
3969 9171 3968 9153 3967 9153 3881 9200
3872 9235 3874 9239 3871 9240
TIME...MOT...LOC 0251Z 248DEG 46KT 3941 9218 3877 9253
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Elmore852
WWUS53 KLSX 160302
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
902 PM CST Wed Dec 15 2021
MOC007-019-027-135-137-173-160315-
/O.CON.KLSX.SV.W.0199.000000T0000Z-211216T0315Z/
Ralls MO-Boone MO-Audrain MO-Callaway MO-Monroe MO-Moniteau MO-
902 PM CST Wed Dec 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CST
FOR NORTHWESTERN RALLS...EASTERN BOONE...CENTRAL AUDRAIN...
NORTHWESTERN CALLAWAY...MONROE AND EAST CENTRAL MONITEAU COUNTIES...
At 902 PM CST, severe thunderstorms were located along a line
extending from Paris to near Easley, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Columbia, Fulton, Mexico, Centralia, Ashland, Monroe City, Paris,
Santa Fe, Columbia Regional Airport, Hallsville, Auxvasse, Perry,
Rensselaer, Easley, Murry, Kingdom City, Vandiver, Stoutsville, The
Landing and Hatton.
This also includes Rock Bridge State Park, Union Covered Bridge
Historic Site, Jewell Cemetery Historic Site, and Mark Twain Lake
Recreational Area.
This includes Interstate 70 in Missouri between exits 126 and 148.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3870 9246 3888 9238 3923 9222 3961 9204
3966 9184 3966 9172 3969 9171 3968 9153
3967 9153 3881 9200 3872 9235 3874 9239
3871 9240
TIME...MOT...LOC 0302Z 248DEG 48KT 3947 9199 3882 9233
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
ElmoreThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 15, 8:01 PM CST | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Monroe, Ralls, Shelby | 44 min |
| Dec 15, 9:09 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Cole, Marion, Monroe and 3 more | 51 min |
| Dec 15, 9:22 PM CST | Severe Thunderstorm Warning | LSX | Marion | 53 min |
| Dec 15, 9:48 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Lincoln, Montgomery, Pike, Ralls | 42 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 2021Every severe thunderstorm warning 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.