Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 151, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 23, 2021, 4:01 PM CDT for Lincoln County, Saint Charles County, Warren County, Missouri. It was in force for 17 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
- Aug 23, 2021, 4:01 PM CDT (21:01 UTC)
- Expired
- Aug 23, 2021, 4:18 PM CDT
- In force
- 17 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Lincoln County, MO, Saint Charles County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 33 km from the middle of the area, began a volume at 21:00 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.0 hours before the alert went out and 255 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1261 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
987 WUUS53 KLSX 232101 SVRLSX MOC113-183-219-232130- /O.NEW.KLSX.SV.W.0151.210823T2101Z-210823T2130Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service St Louis MO 401 PM CDT Mon Aug 23 2021 The National Weather Service in St Louis has issued a * Severe Thunderstorm Warning for... West central St. Charles County in east central Missouri... South central Lincoln County in east central Missouri... East central Warren County in east central Missouri... * Until 430 PM CDT. * At 400 PM CDT, a severe thunderstorm was located over Wright City, moving east at 10 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Wentzville, Warrenton, Wright City, Moscow Mills, Truesdale, Innsbrook, Flint Hill and Foristell. This includes Interstate 70 in Missouri between exits 199 and 203. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3877 9113 3894 9108 3892 9085 3873 9092 TIME...MOT...LOC 2100Z 282DEG 10KT 3885 9100 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Byrd
1 follow-up statement
688
WWUS53 KLSX 232118
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
418 PM CDT Mon Aug 23 2021
MOC113-183-219-232127-
/O.CAN.KLSX.SV.W.0151.000000T0000Z-210823T2130Z/
St. Charles MO-Lincoln MO-Warren MO-
418 PM CDT Mon Aug 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL ST. CHARLES...
SOUTH CENTRAL LINCOLN AND EAST CENTRAL WARREN COUNTIES IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with this thunderstorm.
LAT...LON 3877 9113 3894 9108 3892 9085 3873 9092
TIME...MOT...LOC 2115Z 282DEG 10KT 3884 9094
$$
ByrdThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 3:05 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 25 min |
| Aug 23, 3:33 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 27 min |
| Aug 23, 6:04 PM CDT | Areal Flood Advisory | LSX | Sainte Genevieve | 3 hr |
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.