Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 200, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Dec 15, 2021, 9:09 PM CST for 9 counties in Missouri; Adams County, Pike County, Illinois. It was in force for 51 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 15, 2021, 9:09 PM CST (03:09 UTC)
- Expired
- Dec 15, 2021, 10:00 PM CST
- In force
- 51 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Adams County, IL, Pike County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Marion County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO
The radar
The St Louis radar (KLSX), 112 km from the middle of the area, began a volume at 03:09 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, 9:13 PM CST | TSTM WND GST 57 | 3 Ne Ashland, MO | COLUMBIA REGIONAL AIRPORT. |
| Dec 15, 9:35 PM CST | TSTM WND GST 46 | 1 Ese Vandiver, MO | MEXICO MEMORIAL 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
Davenport, (KDVN), launched 00:00Z, 3.2 hours before the alert went out and 273 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
- 229 J/kg
- Mixed-layer CIN
- -358 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 433 m²/s²
- 0-3 km storm-relative helicity
- 496 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
863
WUUS53 KLSX 160309
SVRLSX
ILC001-149-MOC007-019-027-051-127-137-139-163-173-160400-
/O.NEW.KLSX.SV.W.0200.211216T0309Z-211216T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
909 PM CST Wed Dec 15 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northwestern Pike County in west central Illinois...
Southern Adams County in west central Illinois...
Northwestern Cole County in central Missouri...
Ralls County in northeastern Missouri...
Southeastern Boone County in central Missouri...
Audrain County in central Missouri...
Northwestern Montgomery County in east central Missouri...
Southern Marion County in northeastern Missouri...
Northern Callaway County in central Missouri...
Eastern Monroe County in northeastern Missouri...
Northwestern Pike County in northeastern Missouri...
* Until 1000 PM CST.
* At 908 PM CST, severe thunderstorms were located along a line
extending from near Warren to near Ashland, 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...
Palmyra around 920 PM CST.
Hannibal around 925 PM CST.
Other locations in the path of these severe thunderstorms include
Fulton, Fall Creek, Payson, Williamsburg and Shamrock.
This includes the following highways...
Interstate 172 between exits 2 and 10.
Interstate 72 between exits 4 and 10.
Interstate 70 in Missouri between exits 131 and 161.
This also includes 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 3998 9096 3888 9162 3868 9241 3873 9240
3978 9178
TIME...MOT...LOC 0308Z 255DEG 46KT 3974 9172 3877 9230
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Elmore2 follow-up statements
203 WWUS53 KLSX 160326 SVSLSX Severe Weather Statement National Weather Service St Louis MO 926 PM CST Wed Dec 15 2021 MOC019-051-160335- /O.CAN.KLSX.SV.W.0200.000000T0000Z-211216T0400Z/ Cole MO-Boone MO- 926 PM CST Wed Dec 15 2021 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN COLE AND SOUTHEASTERN BOONE COUNTIES IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until midnight CST for west central Illinois...and central, northeastern and east central Missouri. LAT...LON 3998 9096 3888 9162 3874 9217 3984 9153 TIME...MOT...LOC 0325Z 255DEG 46KT 3979 9146 3882 9204 $$ ILC001-149-MOC007-027-127-137-139-163-173-160400- /O.CON.KLSX.SV.W.0200.000000T0000Z-211216T0400Z/ Pike IL-Adams IL-Ralls MO-Audrain MO-Montgomery MO-Marion MO- Callaway MO-Monroe MO-Pike MO- 926 PM CST Wed Dec 15 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CST FOR NORTHWESTERN PIKE AND SOUTHERN ADAMS COUNTIES IN WEST CENTRAL ILLINOIS...RALLS COUNTY IN NORTHEASTERN MISSOURI...EASTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...NORTHWESTERN MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...SOUTHEASTERN MARION COUNTY IN NORTHEASTERN MISSOURI...NORTHERN CALLAWAY COUNTY IN CENTRAL MISSOURI... SOUTHEASTERN MONROE AND NORTHWESTERN PIKE COUNTIES IN NORTHEASTERN MISSOURI... At 925 PM CST, severe thunderstorms were located along a line extending from near Palmyra to near Fulton, moving east at 55 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Hannibal, Palmyra, Fall Creek, Payson, Williamsburg and Shamrock. This includes the following highways... Interstate 172 between exits 2 and 10. Interstate 72 between exits 4 and 10. Interstate 70 in Missouri between exits 144 and 161. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3998 9096 3888 9162 3874 9217 3984 9153 TIME...MOT...LOC 0325Z 255DEG 46KT 3979 9146 3882 9204 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Elmore
981 WWUS53 KLSX 160336 SVSLSX Severe Weather Statement National Weather Service St Louis MO 936 PM CST Wed Dec 15 2021 MOC137-160346- /O.CAN.KLSX.SV.W.0200.000000T0000Z-211216T0400Z/ Monroe MO- 936 PM CST Wed Dec 15 2021 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONROE COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until midnight CST for west central Illinois...and central, northeastern and east central Missouri. LAT...LON 3998 9096 3888 9162 3878 9202 3988 9137 TIME...MOT...LOC 0336Z 255DEG 46KT 3982 9130 3885 9189 $$ ILC001-149-MOC007-027-127-139-163-173-160400- /O.CON.KLSX.SV.W.0200.000000T0000Z-211216T0400Z/ Pike IL-Adams IL-Ralls MO-Audrain MO-Montgomery MO-Marion MO- Callaway MO-Pike MO- 936 PM CST Wed Dec 15 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CST FOR NORTHWESTERN PIKE AND SOUTHERN ADAMS COUNTIES IN WEST CENTRAL ILLINOIS...RALLS COUNTY IN NORTHEASTERN MISSOURI...EASTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...NORTHWESTERN MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...SOUTHEASTERN MARION COUNTY IN NORTHEASTERN MISSOURI...NORTHEASTERN CALLAWAY COUNTY IN CENTRAL MISSOURI AND NORTHWESTERN PIKE COUNTIES IN NORTHEASTERN MISSOURI... At 936 PM CST, severe thunderstorms were located along a line extending from near Fall Creek to near Fulton, moving east at 55 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Hannibal, Fulton, Vandalia, Wellsville, Payson, New London, Fall Creek, Laddonia, Center, Frankford, Farber, Martinsburg, Curryville, Shamrock, Williamsburg, Spencerburg, Adams, Burton, Liberty and Hull. This includes the following highways... Interstate 172 between exits 2 and 10. Interstate 72 between exits 4 and 10. Interstate 70 in Missouri between exits 155 and 161. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3998 9096 3888 9162 3878 9202 3988 9137 TIME...MOT...LOC 0336Z 255DEG 46KT 3982 9130 3885 9189 TORNADO...POSSIBLE HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Elmore
The 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, 8:34 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Moniteau, Monroe, Ralls | 41 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, 2021Severe Thunderstorm Warnings in Illinois, 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.