Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 22, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 7, 2021, 3:06 PM CDT for Moniteau County, Missouri. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 7, 2021, 3:06 PM CDT (20:06 UTC)
- Expired
- Apr 7, 2021, 3:45 PM CDT
- In force
- 39 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Moniteau County, MO
The radar
The Pleasant Hill radar (KEAX), 135 km from the middle of the area, began a volume at 20:08 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 7, 12:02 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.1 hours before the alert went out and 214 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
- 790 J/kg
- Mixed-layer CIN
- -275 J/kg
- Mixed-layer LCL
- 767 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
510
WUUS53 KLSX 072006
SVRLSX
MOC135-072045-
/O.NEW.KLSX.SV.W.0022.210407T2006Z-210407T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
306 PM CDT Wed Apr 7 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Southwestern Moniteau County in central Missouri...
* Until 345 PM CDT.
* At 306 PM CDT, severe thunderstorms were located along a line
extending from 7 miles southeast of Otterville to near Laurie,
moving north at 55 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Tipton, Clarksburg and Latham.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3869 9284 3868 9262 3870 9261 3844 9263
3860 9284
TIME...MOT...LOC 2006Z 201DEG 49KT 3860 9294 3815 9290
HAIL...1.00IN
WIND...60MPH
$$
MRM2 follow-up statements
920
WWUS53 KLSX 072020
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
320 PM CDT Wed Apr 7 2021
MOC135-072045-
/O.CON.KLSX.SV.W.0022.000000T0000Z-210407T2045Z/
Moniteau MO-
320 PM CDT Wed Apr 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR SOUTHWESTERN MONITEAU COUNTY...
At 320 PM CDT, severe thunderstorms were located along a line
extending from near Bunceton to near Versailles, moving north at 70
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Tipton, Clarksburg and Latham.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3869 9284 3868 9262 3870 9261 3844 9263
3860 9284
TIME...MOT...LOC 2020Z 192DEG 62KT 3881 9286 3836 9282
HAIL...1.00IN
WIND...60MPH
$$
MRM555
WWUS53 KLSX 072036
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
336 PM CDT Wed Apr 7 2021
MOC135-072046-
/O.EXP.KLSX.SV.W.0022.000000T0000Z-210407T2045Z/
Moniteau MO-
336 PM CDT Wed Apr 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MONITEAU COUNTY
WILL EXPIRE AT 345 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
central Missouri.
LAT...LON 3869 9284 3868 9262 3870 9261 3844 9263
3860 9284
TIME...MOT...LOC 2036Z 270DEG 49KT 3887 9265 3842 9261
$$
MRMThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 4:04 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau, Osage | 26 min |
| Apr 7, 4:27 PM CDT | Areal Flood Advisory | LSX | Boone, Cole, Moniteau | 3 hr |
| Apr 7, 5:09 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Monroe, Ralls, Shelby | 19 min |
| Apr 7, 5:37 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Francois, Washington | 68 min |
| Apr 7, 6:27 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 49 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.