Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 124, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 9, 2021, 10:45 PM CDT for 6 counties in Missouri. It was in force for 45 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 9, 2021, 10:45 PM CDT (03:45 UTC)
- Expired
- Jul 9, 2021, 11:30 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Audrain County, MO, Callaway County, MO, Lincoln County, MO, Montgomery County, MO, Pike County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 95 km from the middle of the area, began a volume at 03:49 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 10:57 PM CDT | TSTM WND DMG | 1 W Mexico, MO | REPORT OF A 2 FOOT DIAMETER TREE BLOWN OVER AND BLOCKING CENTRAL ST. TIME ESTIMATED FROM RADAR. |
| Jul 9, 11:05 PM CDT | TSTM WND DMG | 1 Wnw Mexico, MO | 5 POWER POLES BLOWN OVER BY WIND. |
| Jul 9, 11:40 PM CDT | TSTM WND DMG | Hawk Point, MO | TREES DOWN WITH WINDS ESTIMATED TO BE NEAR 60 MPH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 9, 8:18 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 3.8 hours before the alert went out and 284 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
- 1282 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
471
WUUS53 KLSX 100345
SVRLSX
MOC007-027-113-139-163-219-100430-
/O.NEW.KLSX.SV.W.0124.210710T0345Z-210710T0430Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1045 PM CDT Fri Jul 9 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Western Lincoln County in east central Missouri...
Audrain County in central Missouri...
Montgomery County in east central Missouri...
Northeastern Callaway County in central Missouri...
Northeastern Warren County in east central Missouri...
Southwestern Pike County in northeastern Missouri...
* Until 1130 PM CDT.
* At 1044 PM CDT, a severe thunderstorm was located near Martinsburg,
moving southeast at 40 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters have reported wind damage with
this storm.
IMPACT...Expect considerable tree damage. Wind damage is also
likely to mobile homes, roofs, and outbuildings.
* This severe thunderstorm will be near...
Wellsville around 1055 PM CDT.
Buell around 1100 PM CDT.
Other locations in the path of this severe thunderstorm include
Montgomery City, Bellflower, Mineola, New Florence and Jonesburg.
This includes Interstate 70 in Missouri between exits 148 and 183.
This also includes Graham Cave State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 200 AM CDT for central,
northeastern and east central Missouri.
Prepare immediately for damaging winds. People outside should move
immediately to shelter inside a strong building. Stay away from
windows.
&&
LAT...LON 3930 9209 3928 9107 3884 9096 3885 9197
TIME...MOT...LOC 0344Z 330DEG 36KT 3916 9162
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
$$
Elmore1 follow-up statement
162 WWUS53 KLSX 100409 SVSLSX Severe Weather Statement National Weather Service St Louis MO 1109 PM CDT Fri Jul 9 2021 MOC007-027-113-139-163-219-100430- /O.CON.KLSX.SV.W.0124.000000T0000Z-210710T0430Z/ Lincoln MO-Audrain MO-Montgomery MO-Callaway MO-Warren MO-Pike MO- 1109 PM CDT Fri Jul 9 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR WESTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...SOUTHEASTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...NORTHEASTERN CALLAWAY COUNTY IN CENTRAL MISSOURI...NORTHEASTERN WARREN COUNTY IN EAST CENTRAL MISSOURI AND SOUTHWESTERN PIKE COUNTIES IN NORTHEASTERN MISSOURI... At 1109 PM CDT, a severe thunderstorm was located over New Florence, moving southeast at 40 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Trained weather spotters. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Jonesburg. This also includes Graham Cave State Park. This includes Interstate 70 in Missouri between exits 148 and 183. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 200 AM CDT for central, northeastern and east central Missouri. && LAT...LON 3908 9203 3927 9107 3884 9096 3885 9197 TIME...MOT...LOC 0409Z 330DEG 36KT 3894 9145 TORNADO...POSSIBLE HAIL...0.88IN WIND...60MPH $$ CVKING
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:21 PM CDT | Severe Thunderstorm Warning | LSX | Lewis, Marion | 39 min |
| Jul 9, 8:55 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Ralls | 50 min |
| Jul 9, 8:58 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 62 min |
| Jul 9, 9:00 PM CDT | Severe Thunderstorm Warning | LSX | Knox | 45 min |
| Jul 9, 9:08 PM CDT | Areal Flood Advisory | LSX | Lewis, Marion | 32 min |
| Jul 9, 9:10 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Shelby | 65 min |
| Jul 9, 9:14 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 48 min |
| Jul 9, 9:36 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Monroe, Pike, Ralls, Shelby | 54 min |
| Jul 9, 9:40 PM CDT | Flash Flood Warning | LSX | Lewis, Marion | 3 hr |
| Jul 9, 10:10 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Lincoln, Monroe, Pike, Ralls | 50 min |
| Jul 9, 10:32 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Shelby | 23 min |
| Jul 9, 11:08 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Franklin, Gasconade, Montgomery, Osage, Warren | 67 min |
| Jul 9, 11:10 PM CDT | River Flood Warning | LSX | Lewis | 5 days |
| Jul 9, 11:10 PM CDT | River Flood Warning | LSX | Lewis | 32 hr |
| Jul 9, 11:10 PM CDT | River Flood Warning | LSX | Marion | 4 days |
| Jul 9, 11:24 PM CDT | Areal Flood Advisory | LSX | Audrain, Marion, Monroe, Pike, Ralls, Shelby | 3 hr |
| Jul 9, 11:28 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Saint Charles, Warren | 47 min |
| Jul 9, 11:57 PM CDT | Areal Flood Advisory | LSX | Lincoln, Pike | 3 hr |
| Jul 9, 11:59 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Lincoln, Saint Charles, Saint Louis, Warren and 1 more | 61 min |
| Jul 10, 12:26 AM CDT | Areal Flood Advisory | LSX | Lincoln, Saint Charles | 3 hr |
| Jul 10, 12:41 AM CDT | Areal Flood Advisory | LSX | Saint Louis, City of Saint Louis | 3 hr |
| Jul 10, 12:42 AM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 63 min |
| Jul 10, 1:08 AM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois, Washington | 52 min |
| Jul 10, 1:49 AM CDT | River Flood Warning | LSX | Marion | 18 hr |
| Jul 10, 1:50 AM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison, Sainte Genevieve, Saint Francois, Washington | 40 min |
| Jul 10, 2:29 AM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison | 21 min |
| Jul 10, 6:14 AM CDT | River Flood Warning | LSX | Monroe | 4 days |
| Jul 10, 8:30 AM CDT | River Flood Warning | LSX | Lincoln | 3 days |
| Jul 10, 2:15 PM CDT | Areal Flood Advisory | LSX | Saint Charles, Saint Louis | 3 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.