Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 176, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Oct 24, 2021, 7:39 PM CDT for 4 counties in Missouri; Monroe County, Illinois. It was in force for 51 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
- Oct 24, 2021, 7:39 PM CDT (00:39 UTC)
- Expired
- Oct 24, 2021, 8:30 PM CDT
- In force
- 51 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Monroe County, IL, Jefferson County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 78 km from the middle of the area, began a volume at 00:38 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 24, 2:06 PM CDT | Tornado Watch | SPC | 9 hr |
| Oct 24, 5:44 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 280 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
- 3 J/kg
- Mixed-layer CIN
- -286 J/kg
- Mixed-layer LCL
- 585 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 371 m²/s²
- 0-3 km storm-relative helicity
- 467 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.1
The text
As transmitted.
505
WUUS53 KLSX 250039
SVRLSX
ILC133-MOC099-186-187-221-250130-
/O.NEW.KLSX.SV.W.0176.211025T0039Z-211025T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
739 PM CDT Sun Oct 24 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Southwestern Monroe County in southwestern Illinois...
Southeastern Jefferson County in east central Missouri...
Northwestern Ste. Genevieve County in southeastern Missouri...
Southeastern Washington County in east central Missouri...
Northwestern St. Francois County in southeastern Missouri...
* Until 830 PM CDT.
* At 739 PM CDT, a severe thunderstorm was located near Irondale,
moving northeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Leadwood around 750 PM CDT.
Bonne Terre and Desloge around 755 PM CDT.
Other locations in the path of this severe thunderstorm include
Olympian Village.
This includes Interstate 55 in Missouri between exits 157 and 174.
This also includes St. Francois State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for east central
Missouri. A Tornado Watch also remains in effect until 100 AM CDT for
southwestern Illinois...and southeastern Missouri.
For your protection move to an interior room on the lowest floor of a
building.
A Tornado Watch remains in effect until 1000 PM CDT for east central
Missouri. A Tornado Watch also remains in effect until 100 AM CDT for
southwestern Illinois...and southeastern Missouri.
&&
LAT...LON 3798 9081 3826 9030 3810 9017 3809 9018
3809 9021 3807 9017 3807 9015 3803 9012
3776 9079
TIME...MOT...LOC 0039Z 234DEG 32KT 3788 9072
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Glass1 follow-up statement
138
WWUS53 KLSX 250052
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
752 PM CDT Sun Oct 24 2021
MOC221-250102-
/O.CAN.KLSX.SV.W.0176.000000T0000Z-211025T0130Z/
Washington MO-
752 PM CDT Sun Oct 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for east central
Missouri. A Tornado Watch also remains in effect until 100 AM CDT for
southwestern Illinois...and southeastern Missouri.
LAT...LON 3807 9064 3826 9030 3811 9017 3810 9017
3809 9021 3807 9017 3807 9015 3803 9012
3782 9064
TIME...MOT...LOC 0052Z 243DEG 32KT 3791 9056
$$
ILC133-MOC099-186-187-250130-
/O.CON.KLSX.SV.W.0176.000000T0000Z-211025T0130Z/
Monroe IL-Jefferson MO-Ste. Genevieve MO-St. Francois MO-
752 PM CDT Sun Oct 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR SOUTHWESTERN MONROE...SOUTHEASTERN JEFFERSON...NORTHWESTERN STE.
GENEVIEVE AND NORTHWESTERN ST. FRANCOIS COUNTIES...
At 752 PM CDT, a severe thunderstorm was located over Bonne Terre,
moving northeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Bloomsdale.
This also includes St. Francois State Park.
This includes Interstate 55 in Missouri between exits 157 and 174.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for east central
Missouri. A Tornado Watch also remains in effect until 100 AM CDT for
southwestern Illinois...and southeastern Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3807 9064 3826 9030 3811 9017 3810 9017
3809 9021 3807 9017 3807 9015 3803 9012
3782 9064
TIME...MOT...LOC 0052Z 243DEG 32KT 3791 9056
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 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 |
|---|---|---|---|---|
| Oct 24, 7:00 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 34 min |
| Oct 24, 7:03 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Warren | 42 min |
| Oct 24, 7:06 PM CDT | Tornado Warning | LSX | Reynolds | 39 min |
| Oct 24, 7:07 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Franklin, Gasconade, Montgomery, Osage, Warren | 38 min |
| Oct 24, 7:09 PM CDT | Tornado Warning | LSX | Crawford, Iron, Washington | 31 min |
| Oct 24, 7:37 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 38 min |
| Oct 24, 7:48 PM CDT | Tornado Warning | LSX | Iron, Madison, Reynolds, Saint Francois | 27 min |
| Oct 24, 8:03 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois | 42 min |
| Oct 24, 8:09 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois | 40 min |
| Oct 24, 8:10 PM CDT | Tornado Warning | LSX | Iron, Madison, Reynolds | 50 min |
| Oct 24, 8:23 PM CDT | Tornado Warning | LSX | Iron, Madison, Reynolds | 52 min |
| Oct 24, 8:34 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 41 min |
| Oct 24, 8:48 PM CDT | Tornado Warning | LSX | Madison, Saint Francois | 27 min |
| Oct 24, 9:08 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 54 min |
| Oct 24, 9:11 PM CDT | Tornado Warning | LSX | Iron, Madison | 49 min |
| Oct 24, 9:12 PM CDT | Flash Flood Warning | LSX | Iron, Madison | 4 hr |
| Oct 24, 9:37 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 36 min |
| Oct 24, 10:07 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 38 min |
| Oct 24, 10:12 PM CDT | Flash Flood Warning | LSX | Madison | 4 hr |
| Oct 24, 7:59 PM CDT | River Flood Warning | LSX | Brown | 33 hr |
| Oct 24, 8:27 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 48 min |
| Oct 24, 9:00 PM CDT | Tornado Warning | LSX | Clinton, Randolph, Saint Clair, Washington | 45 min |
| Oct 24, 9:08 PM CDT | Tornado Warning | LSX | Randolph | 40 min |
| Oct 24, 9:15 PM CDT | Tornado Warning | LSX | Randolph | 19 min |
| Oct 24, 9:33 PM CDT | Tornado Warning | LSX | Saint Clair | 30 min |
| Oct 24, 9:48 PM CDT | Tornado Warning | LSX | Bond, Clinton, Madison | 42 min |
| Oct 24, 9:58 PM CDT | Tornado Warning | LSX | Marion, Washington | 16 min |
| Oct 24, 10:13 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion | 62 min |
| Oct 24, 10:40 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 26 min |
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.