Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 158, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 26, 2021, 5:28 PM CDT for Marion County, Missouri; Adams County, Illinois. It was in force for 25 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, 5:28 PM CDT (22:28 UTC)
- Expired
- Aug 26, 2021, 5:53 PM CDT
- In force
- 25 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Adams County, IL, Marion County, MO
The radar
The St Louis radar (KLSX), 146 km from the middle of the area, began a volume at 22:27 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
Davenport, (KDVN), launched 12:00Z, 10.5 hours before the alert went out and 202 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
- 458 J/kg
- Mixed-layer CIN
- -249 J/kg
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
333
WUUS53 KLSX 262228
SVRLSX
ILC001-MOC127-262315-
/O.NEW.KLSX.SV.W.0158.210826T2228Z-210826T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
528 PM CDT Thu Aug 26 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Southwestern Adams County in west central Illinois...
Northeastern Marion County in northeastern Missouri...
* Until 615 PM CDT.
* At 528 PM CDT, a severe thunderstorm was located over Quincy,
moving southeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Payson.
This includes Interstate 172 between exits 10 and 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3985 9109 3976 9144 3994 9154 3995 9144
3998 9146 4007 9122
TIME...MOT...LOC 2228Z 335DEG 8KT 3993 9141
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
191 follow-up statement
111
WWUS53 KLSX 262253
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
553 PM CDT Thu Aug 26 2021
ILC001-MOC127-262303-
/O.CAN.KLSX.SV.W.0158.000000T0000Z-210826T2315Z/
Adams IL-Marion MO-
553 PM CDT Thu Aug 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ADAMS AND
NORTHEASTERN MARION COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with this thunderstorm.
LAT...LON 3985 9109 3976 9144 3994 9154 3995 9144
3998 9146 4007 9122
TIME...MOT...LOC 2251Z 335DEG 8KT 3988 9138
$$
19The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 2:25 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis | 50 min |
| 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, 5:34 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Monroe | 41 min |
| Aug 26, 2:04 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 41 min |
| Aug 26, 2:45 PM CDT | Flash Flood Warning | LSX | Montgomery | 4 hr |
| Aug 26, 4:38 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 52 min |
| Aug 26, 5:57 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 48 min |
| Aug 26, 6:54 PM CDT | Areal Flood Advisory | LSX | Bond | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.