Tornado Warning 61, NWS St. Louis, MO

574 
WWUS53 KLSX 172213
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
513 PM CDT Wed Jun 17 2026

ILC001-009-149-172245-
/O.CON.KLSX.TO.W.0061.000000T0000Z-260617T2245Z/
Adams IL-Brown IL-Pike IL-
513 PM CDT Wed Jun 17 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
SOUTHEASTERN ADAMS, SOUTHERN BROWN AND NORTHEASTERN PIKE COUNTIES IN
WEST CENTRAL ILLINOIS...

At 513 PM CDT, a severe thunderstorm capable of producing a tornado
was located 5 miles north of Beverly, or 12 miles southeast of Quincy
Regional Airport, moving east at 50 mph.

HAZARD...Tornado and half dollar size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows and vehicles will occur. Tree damage is
         likely.

This tornado will be near...
  Beverly around 515 PM CDT.

Other locations impacted by the tornado include Kingston, Fishhook,
Perry, Chambersburg and Versailles.

This includes the following State Parks...
Siloam Springs State Park and Ray Norbut State Fish and Wildlife
Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3980 9110 3993 9105 3990 9056 3987 9059
      3983 9057 3982 9058 3979 9060 3978 9061
      3976 9061 3973 9063 3972 9064 3970 9065
      3968 9064
TIME...MOT...LOC 2206Z 278DEG 42KT 3988 9109

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN

$$

Elmore

363 
WWUS53 KLSX 172227
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
527 PM CDT Wed Jun 17 2026

ILC001-172237-
/O.CAN.KLSX.TO.W.0061.000000T0000Z-260617T2245Z/
Adams IL-
527 PM CDT Wed Jun 17 2026

...TORNADO WARNING IS CANCELLED FOR SOUTHEASTERN ADAMS COUNTY...

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

A Tornado Watch remains in effect until 1000 PM CDT Wednesday for a
portion of west central Illinois.

&&

LAT...LON 3984 9089 3992 9089 3990 9056 3987 9059
      3983 9057 3982 9058 3979 9060 3978 9061
      3976 9061 3973 9063 3972 9064 3970 9065
      3968 9064 3975 9089
TIME...MOT...LOC 2213Z 278DEG 42KT 3987 9099

$$


ILC009-149-172245-
/O.CON.KLSX.TO.W.0061.000000T0000Z-260617T2245Z/
Brown IL-Pike IL-
527 PM CDT Wed Jun 17 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR SOUTHERN
BROWN AND NORTHEASTERN PIKE COUNTIES IN WEST CENTRAL ILLINOIS...

At 527 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles north of Griggsville, or 13 miles north of
Pittsfield, moving east at 50 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows and vehicles will occur. Tree damage is
         likely.

This tornado will be near...
  Griggsville around 535 PM CDT.

Other locations impacted by the tornado include Perry, Chambersburg,
Valley City and Versailles.

This includes the following State Parks...
Ray Norbut State Fish and Wildlife Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3984 9089 3992 9089 3990 9056 3987 9059
      3983 9057 3982 9058 3979 9060 3978 9061
      3976 9061 3973 9063 3972 9064 3970 9065
      3968 9064 3975 9089
TIME...MOT...LOC 2213Z 284DEG 42KT 3985 9099

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Elmore

183 
WWUS53 KLSX 172235
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
535 PM CDT Wed Jun 17 2026

ILC009-149-172245-
/O.CON.KLSX.TO.W.0061.000000T0000Z-260617T2245Z/
Brown IL-Pike IL-
535 PM CDT Wed Jun 17 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
SOUTHEASTERN BROWN AND NORTHEASTERN PIKE COUNTIES IN WEST CENTRAL
ILLINOIS...

At 535 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles northeast of Griggsville, or 14 miles northeast
of Pittsfield, moving east at 50 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without
         shelter. Mobile homes will be damaged or destroyed. Damage
         to roofs, windows and vehicles will occur. Tree damage is
         likely.

This tornadic storm will remain over mainly rural areas of
Southeastern Brown and Northeastern Pike Counties in west central
Illinois.

This includes the following State Parks...
Ray Norbut State Fish and Wildlife Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3973 9083 3991 9077 3990 9056 3987 9059
      3983 9057 3982 9058 3979 9060 3978 9061
      3976 9061 3973 9063 3972 9064 3970 9065
      3968 9064
TIME...MOT...LOC 2227Z 284DEG 42KT 3981 9078

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Elmore

704 
WWUS53 KLSX 172244 RRA
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
544 PM CDT Wed Jun 17 2026

ILC009-149-172254-
/O.EXP.KLSX.TO.W.0061.000000T0000Z-260617T2245Z/
Brown IL-Pike IL-
544 PM CDT Wed Jun 17 2026

...TORNADO WARNING WILL EXPIRE AT 545 PM CDT FOR SOUTHEASTERN BROWN
AND NORTHEASTERN PIKE COUNTIES IN WEST CENTRAL ILLINOIS...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 1000 PM CDT Wednesday for a
portion of west central Illinois.

&&

LAT...LON 3973 9083 3991 9077 3990 9056 3987 9059
      3983 9057 3982 9058 3979 9060 3978 9061
      3976 9061 3973 9063 3972 9064 3970 9065
      3968 9064
TIME...MOT...LOC 2235Z 284DEG 42KT 3978 9065

$$

Elmore

Area Forecast Discussion
National Weather Service Saint Louis MO
207 PM CDT Wed Jun 17 2026

.KEY MESSAGES...

- Severe thunderstorms move southeast across the region this
  evening, ending during the early overnight hours.

- Tonight's cold front brings cooler and drier conditions for the
  rest of the week. Rain chances return this weekend.

&&

.SHORT TERM...  (Through Late Thursday Night)
Issued at 206 PM CDT Wed Jun 17 2026

Strong southwest flow has brought in a warm, humid air mass just
ahead of an advancing cold front. This is leading to a rapidly
destabilizing environment this afternoon with thunderstorms expected
ahead of the front. Unusually strong wind shear will lead to strong
potential for storms to organize into supercells capable of large
hail, damaging winds, and tornadoes. Very high precipitable water
values near 2 inches suggest very heavy rainfall rates are likely,
though quick storm motions should minimize the duration in any one
location. Low level wind flow out of the southwest ahead of the
front minimizes the effective convergence along it, so storm
coverage may be initially isolated. In addition, shear vectors
oriented across the boundary suggest storms should remain more
discreet with less potential for a more organized cold pool driven
MCS. A locally greater tornado threat may exist in the vicinity of
the remnant outflow boundary laid down by this morning's storms
across Illinois. Near this boundary convergence will be stronger
along with the potential for locally greater low level wind shear.
Storm coverage is expected to decrease after sunset with the front
bringing in a drier and cooler air mass behind it.

Guidance consensus is that the front settles just south of our area
on Thursday, with lingering showers or thunderstorms similarly
staying just to our south. However, some of these could drift into
the southern periphery of our forecast area. Otherwise, additional
very light, low topped showers may develop behind the cold front as
low level lapse rates maximize tomorrow afternoon. However, an
inversion aloft will limit the depth of these showers, so the impact
will be quite minor from just a few sprinkles. Otherwise maximum
temperatures will be about 10F cooler on Thursday compared to today,
with dewpoints similarly lower by about 10F.

Kimble

&&

.LONG TERM...  (Friday through Next Wednesday)
Issued at 206 PM CDT Wed Jun 17 2026

The trough driving today's action digs out a rather broad low
amplitude trough over the eastern US for the rest of the week, with
similarly low amplitude ridging over the western US. This puts us in
northwesterly flow which favors subsidence aloft and surface high
pressure, although a few weak cold fronts can also occur. So our
forecast for the next several days favors cooler and drier
conditions.

As ridging gradually pushes east toward the Rocky Mountains,
moisture return begins across the Plains later this week. By
Saturday a shortwave trough rounding the top of the ridge triggers a
round of showers and storms in Nebraska and Kansas, the remnants of
which push ESE toward our area Saturday night. This represents our
next best chance of rain. Models vary on how the shortwave trough
and associated features progress, in part due to the convection
associated with it. If this shortwave is a bit slower and the
moisture return makes it northward into our area then we could
develop a local severe weather threat on Sunday. However, confidence
remains low on this due to variance in the guidance on the track and
timing of this wave. Either way, this Saturday night into Sunday
period represents our best chance of rain locally within this 7-day
forecast. Among the long range ensemble guidance, up to 40 percent
of members bring precipitable water values up above 2 inches, so a
locally heavy rain threat will exist. A flash flood threat could
materialize if mesoscale features can align to produce training or
prolonged thunderstorm activity. After Sunday's wave trends favor
drier and mild conditions again under renewed northwest flow.

Kimble

&&

.AVIATION...  (For the 18z TAFs through 18z Thursday Afternoon)
Issued at 1218 PM CDT Wed Jun 17 2026

Strong southwest winds are expected today with gusts occasionally
near 40KT in spots. Thunderstorms are expected to initiate early
this afternoon in northern Missouri, tracking southeast ahead of a
cold front. These storms could be locally severe. Winds shift to
the WNW and slacken behind the front this evening.

Kimble

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...Wind Advisory until 8 PM CDT this evening for Franklin MO-
     Gasconade MO-Jefferson MO-Lincoln MO-Madison MO-Saint
     Charles MO-Saint Francois MO-Saint Louis City MO-Saint
     Louis MO-Sainte Genevieve MO-Warren MO.

     Wind Advisory until 6 PM CDT this evening for Audrain MO-Boone
     MO-Callaway MO-Cole MO-Knox MO-Lewis MO-Marion MO-Moniteau
     MO-Monroe MO-Montgomery MO-Osage MO-Pike MO-Ralls MO-Shelby
     MO.

IL...Wind Advisory until 8 PM CDT this evening for Bond IL-Calhoun IL-
     Clinton IL-Fayette IL-Greene IL-Jersey IL-Macoupin IL-
     Madison IL-Marion IL-Monroe IL-Montgomery IL-Randolph IL-
     Saint Clair IL-Washington IL.

     Wind Advisory until 6 PM CDT this evening for Adams IL-Brown IL-
     Pike IL.

&&

WFO LSX