Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 123, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 9, 2021, 10:32 PM CDT for Monroe County, Shelby County, Missouri. It was in force for 23 min. 1 report 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, 10:32 PM CDT (03:32 UTC)
- Expired
- Jul 9, 2021, 10:55 PM CDT
- In force
- 23 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Monroe County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 166 km from the middle of the area, began a volume at 03:33 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, 10:41 PM CDT | TSTM WND DMG | Paris, MO | DISPATCH REPORTS NUMEROUS TREES DOWN IN THE WESTERN PORTION OF THE COUNTY, INCLUDING IN PARIS. TIME ESTIMATED FROM RADAR. |
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
Davenport, (KDVN), launched 00:00Z, 3.5 hours before the alert went out and 261 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
- 1111 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
878
WUUS53 KLSX 100332
SVRLSX
MOC137-205-100415-
/O.NEW.KLSX.SV.W.0123.210710T0332Z-210710T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1032 PM CDT Fri Jul 9 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Southwestern Shelby County in northeastern Missouri...
Central Monroe County in northeastern Missouri...
* Until 1115 PM CDT.
* At 1032 PM CDT, a severe thunderstorm was located over Maud, moving
southeast at 25 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...
Maud around 1035 PM CDT.
Woodlawn around 1040 PM CDT.
Shelbina around 1045 PM CDT.
Other locations in the path of this severe thunderstorm include
Granville and Paris.
This also includes Union Covered Bridge Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 200 AM CDT for northeastern
Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3978 9230 3980 9229 3958 9174 3935 9213
3957 9230
TIME...MOT...LOC 0332Z 303DEG 20KT 3966 9220
HAIL...1.00IN
WIND...60MPH
$$
Elmore2 follow-up statements
422
WWUS53 KLSX 100347
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1047 PM CDT Fri Jul 9 2021
MOC137-205-100415-
/O.CON.KLSX.SV.W.0123.000000T0000Z-210710T0415Z/
Shelby MO-Monroe MO-
1047 PM CDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR SOUTHWESTERN SHELBY AND CENTRAL MONROE COUNTIES...
At 1047 PM CDT, a severe thunderstorm was located near Granville,
moving southeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Granville and Paris.
This also includes Union Covered Bridge Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 200 AM CDT for northeastern
Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3978 9230 3980 9229 3958 9174 3935 9213
3957 9230
TIME...MOT...LOC 0347Z 303DEG 20KT 3961 9211
HAIL...1.00IN
WIND...60MPH
$$
Elmore540
WWUS53 KLSX 100355
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1055 PM CDT Fri Jul 9 2021
MOC137-205-100405-
/O.CAN.KLSX.SV.W.0123.000000T0000Z-210710T0415Z/
Shelby MO-Monroe MO-
1055 PM CDT Fri Jul 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SHELBY AND
CENTRAL MONROE 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.
A Tornado Watch remains in effect until 200 AM CDT for northeastern
Missouri.
LAT...LON 3978 9230 3980 9229 3958 9174 3935 9213
3957 9230
TIME...MOT...LOC 0354Z 303DEG 20KT 3958 9206
$$
ElmoreThe 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, 10:45 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Lincoln, Montgomery, Pike, Warren | 45 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.