Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 185, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Dec 10, 2021, 6:42 PM CST for 4 counties in Missouri. It was in force for 48 min. 3 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, 6:42 PM CST (00:42 UTC)
- Expired
- Dec 10, 2021, 7:30 PM CST
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Crawford County, MO, Franklin County, MO, Gasconade County, MO, Osage County, MO
The radar
The St Louis radar (KLSX), 78 km from the middle of the area, began a volume at 00:46 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, 6:58 PM CST | TSTM WND DMG | 6 W Bland, MO | STRONG WINDS HAVE BROUGHT DOWN TREE BRANCHES. |
| Dec 10, 7:22 PM CST | TSTM WND DMG | 1 N Gerald, MO | FRANKLIN COUNTY DISPATCH REPORTED A TREE ACROSS HIGHWAY Y NORTH OF GERALD AT WHEELER ROAD. TIME ESTIMATED FROM RADAR. |
| Dec 10, 7:22 PM CST | TSTM WND DMG | 4 Sw Noser Mill, MO | LARGE TREE DOWN AT EVERGREEN LOOP AND 3 OAKS ROAD, SOUTH OF LESLIE. TIME ESTIMATED FROM RADAR. |
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
Springfield, MO (KSGF), launched 00:00Z, 0.7 hours before the alert went out and 262 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
- 637 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1113 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 344 m²/s²
- 0-3 km storm-relative helicity
- 300 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 8.4
The text
As transmitted.
696
WUUS53 KLSX 110042
SVRLSX
MOC055-071-073-151-110130-
/O.NEW.KLSX.SV.W.0185.211211T0042Z-211211T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
642 PM CST Fri Dec 10 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northwestern Crawford County in east central Missouri...
Western Franklin County in east central Missouri...
Southeastern Osage County in central Missouri...
Gasconade County in east central Missouri...
* Until 730 PM CST.
* At 642 PM CST, severe thunderstorms were located along a line
extending from near Swiss to 7 miles east of Vienna, moving
northeast at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Drake and Mount Sterling around 645 PM CST.
Swiss around 650 PM CST.
Belle around 655 PM CST.
Bland around 700 PM CST.
Other locations in the path of these severe thunderstorms include
Owensville, New Haven, Rosebud, Gerald and Beaufort.
This includes Interstate 44 in Missouri between exits 203 and 218.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 central and east central Missouri.
For your protection move to an interior room on the lowest floor of a
building.
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 central and east central Missouri.
&&
LAT...LON 3846 9175 3868 9128 3865 9123 3862 9123
3860 9113 3827 9114 3804 9132 3800 9152
3815 9153 3815 9164 3829 9165 3829 9183
TIME...MOT...LOC 0042Z 242DEG 34KT 3854 9156 3817 9182
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
BRC2 follow-up statements
101
WWUS53 KLSX 110100
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
700 PM CST Fri Dec 10 2021
MOC151-110110-
/O.CAN.KLSX.SV.W.0185.000000T0000Z-211211T0130Z/
Osage MO-
700 PM CST Fri Dec 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OSAGE COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1100 PM CST for east central
Missouri. A Tornado Watch also remains in effect until 1100 PM CST
for east central Missouri.
LAT...LON 3851 9164 3868 9128 3865 9123 3862 9123
3860 9113 3827 9114 3804 9132 3800 9152
3815 9153 3815 9164
TIME...MOT...LOC 0100Z 242DEG 34KT 3862 9138 3825 9164
$$
MOC055-071-073-110130-
/O.CON.KLSX.SV.W.0185.000000T0000Z-211211T0130Z/
Crawford MO-Franklin MO-Gasconade MO-
700 PM CST Fri Dec 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CST
FOR NORTHWESTERN CRAWFORD...WESTERN FRANKLIN AND GASCONADE
COUNTIES...
At 700 PM CST, severe thunderstorms were located along a line
extending from 6 miles northeast of Swiss to near Bland, moving
northeast at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
New Haven, Rosebud, Gerald and Beaufort.
This includes Interstate 44 in Missouri between exits 203 and 218.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 east central Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3851 9164 3868 9128 3865 9123 3862 9123
3860 9113 3827 9114 3804 9132 3800 9152
3815 9153 3815 9164
TIME...MOT...LOC 0100Z 242DEG 34KT 3862 9138 3825 9164
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
19179
WWUS53 KLSX 110119
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
719 PM CST Fri Dec 10 2021
MOC055-071-073-110130-
/O.CON.KLSX.SV.W.0185.000000T0000Z-211211T0130Z/
Crawford MO-Franklin MO-Gasconade MO-
719 PM CST Fri Dec 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CST
FOR NORTHWESTERN CRAWFORD...WESTERN FRANKLIN AND SOUTHEASTERN
GASCONADE COUNTIES...
At 719 PM CST, severe thunderstorms were located along a line
extending from near Treloar to near Owensville, moving northeast at
40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Sullivan, Cuba, Owensville, New Haven, Bourbon, Gerald, Rosebud,
Leasburg, Beaufort, Leslie, St. Cloud, Noser Mill, Japan, Lyon and
Oak Hill.
This includes Interstate 44 in Missouri between exits 203 and 218.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CST for east central
Missouri. A Tornado Watch also remains in effect until 1100 PM CST
for east central Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3863 9137 3868 9128 3865 9123 3862 9123
3860 9113 3827 9114 3804 9132 3800 9152
3815 9153 3815 9164
TIME...MOT...LOC 0119Z 242DEG 34KT 3869 9120 3833 9146
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
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 | 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, 7:35 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
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.