Severe Thunderstorm Warning 161, NWS St. Louis, MO

900 
WWUS53 KLSX 010938
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
438 AM CDT Mon Jun 1 2026

MOC007-027-073-139-151-219-011000-
/O.CON.KLSX.SV.W.0161.000000T0000Z-260601T1000Z/
Audrain MO-Callaway MO-Gasconade MO-Montgomery MO-Osage MO-Warren
MO-
438 AM CDT Mon Jun 1 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 5 AM CDT FOR
SOUTH CENTRAL AUDRAIN, SOUTHEASTERN CALLAWAY AND NORTHEASTERN OSAGE
COUNTIES IN CENTRAL MISSOURI AND NORTHERN GASCONADE, MONTGOMERY AND
WEST CENTRAL WARREN COUNTIES IN EAST CENTRAL MISSOURI...

At 438 AM CDT, severe thunderstorms were located along a line from
near Wellsville to 7 miles southeast of New Bloomfield, or along a
line from near Wellsville to 8 miles east of Holts Summit, moving
southeast at 30 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...
  Fulton, Martinsburg, Shamrock, Wellsville, Williamsburg, Montgomery
  City, Mokane, Mineola, Buell, Chamois, New Florence, Bellflower,
  Big Spring, High Hill, Rhineland, Gasconade, Jonesburg, Hermann,
  Swiss and Mount Sterling.

This includes the following State Parks...
Deutschheim Historic Site and Graham Cave State Park.

This includes Interstate 70 in Missouri between exits 155 and 183.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds and
large hail.

&&

LAT...LON 3879 9210 3894 9192 3913 9174 3913 9163
      3906 9127 3869 9129 3870 9131 3871 9132
      3871 9133 3870 9135 3870 9137 3855 9137
      3846 9164
TIME...MOT...LOC 0922Z 302DEG 26KT 3909 9165 3887 9187 3874 9210

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BAH

073 
WWUS53 KLSX 010944
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
444 AM CDT Mon Jun 1 2026

MOC007-027-073-139-151-219-011000-
/O.CON.KLSX.SV.W.0161.000000T0000Z-260601T1000Z/
Audrain MO-Callaway MO-Gasconade MO-Montgomery MO-Osage MO-Warren
MO-
444 AM CDT Mon Jun 1 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 5 AM CDT FOR
SOUTHEASTERN AUDRAIN, EASTERN CALLAWAY AND NORTHEASTERN OSAGE
COUNTIES IN CENTRAL MISSOURI AND NORTHERN GASCONADE, MONTGOMERY AND
WEST CENTRAL WARREN COUNTIES IN EAST CENTRAL MISSOURI...

At 444 AM CDT, severe thunderstorms were located along a line from
over Buell to 7 miles west of Chamois, or along a line from near
Montgomery City to 12 miles east of Holts Summit, moving southeast at
30 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...
  Martinsburg, Shamrock, Wellsville, Williamsburg, Montgomery City,
  Mokane, Buell, Mineola, Chamois, New Florence, Bellflower, Big
  Spring, Morrison, High Hill, Rhineland, Gasconade, Jonesburg,
  Hermann, Swiss and Mount Sterling.

This includes the following State Parks...
Deutschheim Historic Site and Graham Cave State Park.

This includes Interstate 70 in Missouri between exits 161 and 183.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds and
large hail.

&&

LAT...LON 3875 9204 3888 9183 3908 9170 3913 9163
      3906 9127 3869 9129 3869 9130 3871 9132
      3871 9133 3870 9135 3870 9137 3855 9137
      3846 9164
TIME...MOT...LOC 0938Z 302DEG 27KT 3902 9149 3880 9172 3867 9194

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BAH

472 
WWUS53 KLSX 010948
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
448 AM CDT Mon Jun 1 2026

MOC007-010958-
/O.CAN.KLSX.SV.W.0161.000000T0000Z-260601T1000Z/
Audrain MO-
448 AM CDT Mon Jun 1 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHEASTERN AUDRAIN
COUNTY...

The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 AM CDT for a
portion of central Missouri.

&&

LAT...LON 3870 9195 3884 9177 3906 9164 3906 9163
      3908 9163 3912 9161 3906 9127 3869 9129
      3870 9131 3871 9132 3871 9133 3870 9135
      3870 9137 3855 9137 3846 9164
TIME...MOT...LOC 0944Z 302DEG 27KT 3900 9144 3878 9167 3865 9189

$$


MOC027-073-139-151-219-011000-
/O.CON.KLSX.SV.W.0161.000000T0000Z-260601T1000Z/
Callaway MO-Gasconade MO-Montgomery MO-Osage MO-Warren MO-
448 AM CDT Mon Jun 1 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 5 AM CDT FOR
SOUTHEASTERN CALLAWAY AND NORTHEASTERN OSAGE COUNTIES IN CENTRAL
MISSOURI AND NORTHERN GASCONADE, MONTGOMERY AND WEST CENTRAL WARREN
COUNTIES IN EAST CENTRAL MISSOURI...

At 448 AM CDT, severe thunderstorms were located along a line from
near Bellflower to 6 miles southwest of Chamois, or along a line from
5 miles east of Montgomery City to 10 miles north of Linn, moving
southeast at 30 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...
  Wellsville, Williamsburg, Montgomery City, Mokane, Buell, Mineola,
  Chamois, New Florence, Americus, Bellflower, Big Spring, Morrison,
  High Hill, Rhineland, Gasconade, Jonesburg, McKittrick, Hermann,
  Swiss and Mount Sterling.

This includes the following State Parks...
Deutschheim Historic Site and Graham Cave State Park.

This includes Interstate 70 in Missouri between exits 161 and 183.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds and
large hail.

&&

LAT...LON 3870 9195 3884 9177 3906 9164 3906 9163
      3908 9163 3912 9161 3906 9127 3869 9129
      3870 9131 3871 9132 3871 9133 3870 9135
      3870 9137 3855 9137 3846 9164
TIME...MOT...LOC 0944Z 302DEG 27KT 3900 9144 3878 9167 3865 9189

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BAH

596 
WWUS53 KLSX 010955
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
455 AM CDT Mon Jun 1 2026

MOC027-073-139-151-219-011005-
/O.EXP.KLSX.SV.W.0161.000000T0000Z-260601T1000Z/
Callaway MO-Gasconade MO-Montgomery MO-Osage MO-Warren MO-
455 AM CDT Mon Jun 1 2026

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 5 AM CDT FOR
SOUTHEASTERN CALLAWAY AND NORTHEASTERN OSAGE COUNTIES IN CENTRAL
MISSOURI AND NORTHERN GASCONADE, MONTGOMERY AND WEST CENTRAL WARREN
COUNTIES IN EAST CENTRAL MISSOURI...

The Severe Thunderstorm Warning that was previously in effect has
been reissued for Montgomery, Osage, Gasconade, and Warren Counties
and is in effect until 545 AM CDT. Please refer to that bulletin for
the latest severe weather information.

A Severe Thunderstorm Watch remains in effect until 900 AM CDT for
portions of central and east central Missouri.

&&

LAT...LON 3870 9195 3884 9177 3906 9164 3906 9163
      3908 9163 3912 9161 3906 9127 3869 9129
      3870 9131 3871 9132 3871 9133 3870 9135
      3870 9137 3855 9137 3846 9164
TIME...MOT...LOC 0948Z 302DEG 27KT 3898 9141 3876 9163 3863 9186

$$

BAH

Area Forecast Discussion
National Weather Service Saint Louis MO
358 AM CDT Mon Jun 1 2026

.KEY MESSAGES...

- There will be two rounds of thunderstorms today, one early this morning
  and another over southeast Missouri and southwest Illinois this
  afternoon. Damaging winds, large hail, and heavy rainfall are
  possible with the strongest storms.

- Dry weather is expected Tuesday through Thursday before the
  chances for showers and thunderstorms returns later this week
  into next weekend.

&&

.SHORT TERM...  (Through Late Tuesday Afternoon)
Issued at 356 AM CDT Mon Jun 1 2026

Thunderstorms continue to show a gradual increase in intensity
and severity early this morning on the nose of a broad low level
jet across Missouri. There remains the potential for severe
thunderstorms the remainder of the morning as the thunderstorms
over central and western Missouri develop a cold pool which could
cause upscale growth across the CWA into a line segment bringing
some damaging winds and hail with the stronger storms given the
current 1000-2500 MLCAPES and effective shear of 30-40 knots. The
environment this morning also remains favorable for storm
producing heavy rainfall given the current PWATS and warm cloud
depths, particularly if they can train in any one location for
very long.

The CAMS including the HRRR have this first round of convection
moving through the CWA by around 9-10 am.  It will lay out of the
outflow boundary that will allow for additional shower and
thunderstorm development this afternoon.  RAP soundings from
Farmington this afternoon are showing MLCAPES between 2000-3000 J/kg
with around 30 knots of deep layer shear.  This should be sufficient
to to produce an isolated threat for damaging winds and large hail
into the early evening hours.

Drier weather is expected from mid evening on as the HREF is showing
the high building down the upper Midwest.  Highs today will recover
back into the 80s behind this morning's storms but should be a few
degrees cooler tomorrow with cold air advection.
Britt

&&

.LONG TERM...  (Tuesday Night through Sunday)
Issued at 356 AM CDT Mon Jun 1 2026

Dry weather is still expected Wednesday into Thursday as the upper
ridge moves south across the area.  As the ridge continues to move
to the south, the chance of showers and thunderstorms will return to
the area late this week into the weekend as moisture returns north
into the area ahead of western trough.  High temperatures are
expected to return into the mid to high 80s.

Britt

&&

.AVIATION...  (For the 06z TAFs through 06z Monday Night)
Issued at 1106 PM CDT Sun May 31 2026

The focus for impacts this period continues to be showers and
thunderstorms through this morning. The main corridor for these
showers and thunderstorms will stretch from near KCOU and KJEF
east-southeastward through KSUS, KSTL, and KCPS. KUIN has a low
chance of being grazed by this activity, though confidence in this
occurring is dwindling. Storms will be capable of heavy rainfall
that will reduce visibilities to MVFR and even IFR flight
categories, and there is a very low chance for gusty, erratic
winds and small hail at KCOU and KJEF. Showers and thunderstorms
will move south of the local terminals by mid morning, with
confidence high in VFR flight conditions through the remainder of
the day.

Elmore

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...None.
IL...None.
&&

WFO LSX