Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 28, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 9, 2021, 5:04 PM CDT for Madison County, Missouri. It was in force for 28 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 9, 2021, 5:04 PM CDT (22:04 UTC)
- Expired
- Apr 9, 2021, 5:32 PM CDT
- In force
- 28 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
County Madison County, MO
The radar
The Paducah radar (KPAH), 145 km from the middle of the area, began a volume at 22:04 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
Little Rock, AR (KLZK), launched 12:00Z, 10.1 hours before the alert went out and 286 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
- 2139 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
833
WUUS53 KLSX 092204
SVRLSX
MOC123-092245-
/O.NEW.KLSX.SV.W.0028.210409T2204Z-210409T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
504 PM CDT Fri Apr 9 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Southern Madison County in southeastern Missouri...
* Until 545 PM CDT.
* At 503 PM CDT, a severe thunderstorm was located over Sam A. Baker
State Park, moving northeast at 30 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Marquand, Buckhorn and Saco.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3732 9055 3733 9055 3757 9041 3744 9014
3737 9015 3731 9022
TIME...MOT...LOC 2203Z 220DEG 25KT 3724 9050
HAIL...1.75IN
WIND...60MPH
$$
MRM2 follow-up statements
119
WWUS53 KLSX 092222
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
522 PM CDT Fri Apr 9 2021
MOC123-092245-
/O.CON.KLSX.SV.W.0028.000000T0000Z-210409T2245Z/
Madison MO-
522 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR SOUTHERN MADISON COUNTY IN SOUTHEASTERN MISSOURI...
At 522 PM CDT, a severe thunderstorm was located near Buckhorn,
moving northeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Law enforcement reported quarter sized hail in Wayne County.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Marquand, Buckhorn and Saco.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3732 9055 3733 9052 3753 9033 3744 9014
3737 9015 3731 9022
TIME...MOT...LOC 2222Z 230DEG 25KT 3732 9037
HAIL...1.00IN
WIND...60MPH
$$
MRM063
WWUS53 KLSX 092232
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
532 PM CDT Fri Apr 9 2021
MOC123-092242-
/O.CAN.KLSX.SV.W.0028.000000T0000Z-210409T2245Z/
Madison MO-
532 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MADISON COUNTY IN
SOUTHEASTERN MISSOURI 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.
LAT...LON 3732 9055 3733 9052 3753 9033 3744 9014
3737 9015 3731 9022
TIME...MOT...LOC 2229Z 220DEG 25KT 3738 9031
$$
MRMNearby
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.