Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 154, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 26, 2021, 2:25 PM CDT for Saint Louis County, Missouri. It was in force for 50 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 26, 2021, 2:25 PM CDT (19:25 UTC)
- Expired
- Aug 26, 2021, 3:15 PM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Saint Louis County, MO
The radar
The St Louis radar (KLSX), 39 km from the middle of the area, began a volume at 19:27 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, 7.4 hours before the alert went out and 210 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
- 1067 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 954 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.6
The text
As transmitted.
837
WUUS53 KLSX 261925
SVRLSX
MOC189-262015-
/O.NEW.KLSX.SV.W.0154.210826T1925Z-210826T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
225 PM CDT Thu Aug 26 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northeastern St. Louis County in east central Missouri...
* Until 315 PM CDT.
* At 224 PM CDT, a severe thunderstorm was located over Ferguson,
moving southwest at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Hazelwood, Berkeley, Normandy, Cool Valley, Kinloch, Pasadena
Hills, Pasadena Park and Bellerive around 230 PM CDT.
Bel-Ridge, Hillsdale, Wellston, Bel-Nor, Velda City, Velda Village
Hills, Greendale, Beverly Hills, Uplands Park and Glen Echo Park
around 235 PM CDT.
St. Ann, Bridgeton, St. John, Woodson Terrace, Lambert-St. Louis
International Airport, Pagedale, Hanley Hills, Charlack and
Edmundson around 240 PM CDT.
Other locations in the path of this severe thunderstorm include
University City, Breckenridge Hills, Vinita Park, Sycamore Hills,
Vinita Terrace, Overland, Clayton, Champ, Maryland Heights and
Olivette.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3880 9014 3877 9017 3877 9018 3876 9019
3873 9023 3871 9026 3868 9028 3864 9033
3875 9046 3887 9030
TIME...MOT...LOC 1924Z 049DEG 12KT 3875 9029
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Glass1 follow-up statement
738
WWUS53 KLSX 261942
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
242 PM CDT Thu Aug 26 2021
MOC189-262015-
/O.CON.KLSX.SV.W.0154.000000T0000Z-210826T2015Z/
St. Louis MO-
242 PM CDT Thu Aug 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR NORTHEASTERN ST. LOUIS COUNTY...
At 242 PM CDT, a severe thunderstorm was located over Bel-Ridge,
moving southwest at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
University City, Overland, Champ, Clayton and Olivette.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3880 9014 3877 9017 3877 9018 3876 9019
3873 9023 3871 9026 3868 9028 3864 9033
3875 9046 3884 9024
TIME...MOT...LOC 1942Z 039DEG 13KT 3871 9032
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GlassThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 3:10 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis | 50 min |
| Aug 26, 3:46 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Warren | 44 min |
| Aug 26, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 25 min |
| Aug 26, 5:34 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Monroe | 41 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.