Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 137, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 31, 2021, 5:15 PM CDT for Iron County, Reynolds County, Missouri. It was in force for 21 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
- Jul 31, 2021, 5:15 PM CDT (22:15 UTC)
- Expired
- Jul 31, 2021, 5:36 PM CDT
- In force
- 21 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Iron County, MO, Reynolds County, MO
The radar
The St Louis radar (KLSX), 131 km from the middle of the area, began a volume at 22:15 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
Springfield, MO (KSGF), launched 12:00Z, 10.3 hours before the alert went out and 267 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
- 1314 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1358 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
329
WUUS53 KLSX 312215
SVRLSX
MOC093-179-312300-
/O.NEW.KLSX.SV.W.0137.210731T2215Z-210731T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
515 PM CDT Sat Jul 31 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Central Iron County in southeastern Missouri...
Northeastern Reynolds County in southeastern Missouri...
* Until 600 PM CDT.
* At 515 PM CDT, a severe thunderstorm was located near Oates, moving
southeast at 15 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...
Glover.
This also includes Johnsons Shut-Ins State Park and Taum Sauk
Mountain State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3751 9108 3768 9099 3760 9058 3735 9071
TIME...MOT...LOC 2215Z 294DEG 13KT 3757 9096
HAIL...1.00IN
WIND...60MPH
$$
Carney2 follow-up statements
989
WWUS53 KLSX 312226
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
526 PM CDT Sat Jul 31 2021
MOC093-179-312300-
/O.CON.KLSX.SV.W.0137.000000T0000Z-210731T2300Z/
Iron MO-Reynolds MO-
526 PM CDT Sat Jul 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR CENTRAL IRON AND NORTHEASTERN REYNOLDS COUNTIES...
At 526 PM CDT, a severe thunderstorm was located near Oates, moving
east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Ironton, Arcadia, Glover, Oates, Sabula, Chloride, Hogan, Lesterville
and Black.
This also includes Johnsons Shut-Ins State Park and Taum Sauk
Mountain State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3751 9108 3768 9099 3760 9058 3735 9071
TIME...MOT...LOC 2226Z 287DEG 16KT 3757 9097
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
Carney449
WWUS53 KLSX 312236
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
536 PM CDT Sat Jul 31 2021
MOC093-179-312246-
/O.CAN.KLSX.SV.W.0137.000000T0000Z-210731T2300Z/
Iron MO-Reynolds MO-
536 PM CDT Sat Jul 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL IRON AND NORTHEASTERN
REYNOLDS 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.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
St Louis.
LAT...LON 3751 9108 3768 9099 3760 9058 3735 9071
TIME...MOT...LOC 2234Z 294DEG 13KT 3755 9093
$$
CarneyThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 5:34 AM CDT | Areal Flood Advisory | LSX | Knox, Lewis | 3 hr |
| Jul 31, 6:51 AM CDT | Areal Flood Advisory | LSX | Marion, Shelby | 3 hr |
| Jul 31, 7:39 AM CDT | Flash Flood Warning | LSX | Marion | 3 hr |
| Jul 31, 9:49 AM CDT | River Flood Warning | LSX | Marion | 18 hr |
| Jul 31, 9:50 AM CDT | River Flood Warning | LSX | Marion | 3 days |
| Jul 31, 3:05 PM CDT | River Flood Warning | LSX | Lewis | 49 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.