Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 159, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 26, 2021, 5:34 PM CDT for Audrain County, Monroe County, Missouri. It was in force for 41 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, 5:34 PM CDT (22:34 UTC)
- Expired
- Aug 26, 2021, 6:15 PM CDT
- In force
- 41 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Audrain County, MO, Monroe County, MO
The radar
The St Louis radar (KLSX), 120 km from the middle of the area, began a volume at 22:37 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, 10.6 hours before the alert went out and 276 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.
887
WUUS53 KLSX 262234
SVRLSX
MOC007-137-262315-
/O.NEW.KLSX.SV.W.0159.210826T2234Z-210826T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
534 PM CDT Thu Aug 26 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
North central Audrain County in central Missouri...
Southeastern Monroe County in northeastern Missouri...
* Until 615 PM CDT.
* At 534 PM CDT, a severe thunderstorm was located near Santa Fe,
moving southeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will remain over mainly rural areas of
north central Audrain and southeastern Monroe Counties, including
the following locations... Rush Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3948 9194 3944 9175 3937 9172 3932 9172
3932 9169 3930 9168 3913 9174 3921 9197
TIME...MOT...LOC 2234Z 304DEG 9KT 3930 9179
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
191 follow-up statement
396
WWUS53 KLSX 262305
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
605 PM CDT Thu Aug 26 2021
MOC007-137-262315-
/O.EXP.KLSX.SV.W.0159.000000T0000Z-210826T2315Z/
Audrain MO-Monroe MO-
605 PM CDT Thu Aug 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL AUDRAIN AND
SOUTHEASTERN MONROE COUNTIES WILL EXPIRE AT 615 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3948 9194 3944 9175 3937 9172 3932 9172
3932 9169 3930 9168 3913 9174 3921 9197
TIME...MOT...LOC 2305Z 304DEG 9KT 3926 9171
$$
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, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 25 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.