Tornado Warning 37, NWS Paducah, KY

Area Forecast Discussion
National Weather Service Paducah KY
1210 PM CDT Sun Jun 21 2026

.KEY MESSAGES...

- Showers and thunderstorms expected later today, especially
  tonight, lingering into Monday; localized flooding heavy
  rainfall and strong to severe storms will be possible.

- Cooler and mostly drier conditions return Tuesday, before
  scattered storms re-enter the forecast later in the week
  heading into next weekend.

&&

.DISCUSSION...
Issued at 1205 PM CDT Sun Jun 21 2026

The complex of storms marching across MO will push our
northern/western reaches this afternoon. MUCAPEs will be making
their way into 4 digits, despite incoming clouds retarding the
diurnal rise. Dew points already into the lower 70s across our
south will solidify their ground over the entirety of the FA
this pm. Bulk shear and lapse rates similarly improve with the
system's approach, so any PM storm does show strong-svr potential.
However, the track of this driving low looks primarily to be to
our north, and the main first threat looks to follow its track.

Our best best for more robust/widespread storms comes later,
into the 00z-06z time frame, as the 2ndary wave develops and
rides along the boundary. By then, the upper shear profiles have
peaked, and helicity picks up, at least along the boundary/in
the vicinity of the wave's track, which dives southeastward into
the lower Ohio Valley. Expect an all hazards severe mode with
this wave, and in addition, near 2" PW's with E-SAT's showing
10-30 year Return Intervals suggest an efficiency to heavy rain
producing storms that if they train/repeat over the same areas,
could enhance storm average forecast total signals of around an
inch, to localized totals 2-3x higher. We'll therefore continue
the Flood Watch in our peak threat areas north for now, with
collaborative efforts driving any southward expansion.

Storms linger along/in advance of the boundary into Monday as
it moves eastward and southward coincident with the low's track
up the Ohio valley, which ultimately winds pops down with
relatively cooler/drier air coming in its place by Tuesday. Pops
start to pick up again later in the week, esp into next weekend.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1205 PM CDT Sun Jun 21 2026

Storm chances increase thru the TAF forecast period, with
restrictions to CIGS/VSBYS increasing with pops. Peak
restrictions will be this evening/overnight, when stronger
storms may drive Instrument Flight Rules at times. South winds
shift to northwest upon system passage late tonight/early tmrw,
as low end MVFR to potentially IFR based CIGS prevail. They
should gradually disperse as pops complete their diminishing
from the forecast area thru the planning phase hours of the
forecast.

&&

.PAH WATCHES/WARNINGS/ADVISORIES...
IL...Lake Wind Advisory until 7 PM CDT this evening for ILZ075-081-
     085.
     Flood Watch from 1 PM CDT this afternoon through Monday
     morning for ILZ075>078-080>083.
MO...Lake Wind Advisory until 7 PM CDT this evening for MOZ100.
IN...Flood Watch from 1 PM CDT /2 PM EDT/ this afternoon through
     Monday morning for INZ081-082-085>088.
KY...Lake Wind Advisory until 7 PM CDT this evening for KYZ007>009-
     011-012.

&&

Hazardous Weather Outlook
National Weather Service Paducah KY
316 AM CDT Sun Jun 21 2026

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-221215-
Jefferson-Wayne IL-Edwards-Wabash-Perry IL-Franklin-Hamilton-
White-Jackson-Williamson-Saline-Gallatin-Union-Johnson-Pope-
Hardin-Alexander-Pulaski-Massac-Gibson-Pike-Posey-Vanderburgh-
Warrick-Spencer-Fulton-Hickman-Carlisle-Ballard-McCracken-Graves-
Livingston-Marshall-Calloway-Crittenden-Lyon-Trigg-Caldwell-
Union KY-Webster-Hopkins-Christian-Henderson-Daviess-McLean-
Muhlenberg-Todd-Perry MO-Bollinger-Cape Girardeau-Wayne MO-Carter-
Ripley-Butler-Stoddard-Scott-Mississippi-New Madrid-
316 AM CDT Sun Jun 21 2026 /416 AM EDT Sun Jun 21 2026/

This Hazardous Weather Outlook is for portions of southern
Illinois, southwest Indiana, western Kentucky, and southeast
Missouri.

.DAY ONE...Today and Tonight

Numerous thunderstorms are expected throughout the Quad State
today. Severe storms with damaging winds, large hail, and even a
few tornadoes will be possible this afternoon and evening. Heavy
rainfall will be a concern for the entire period.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are expected to continue through Monday mainly
across the south and southeast, with heavy rainfall the main
concern.

An isolated thunderstorm cannot be ruled out over southeast
Missouri Tuesday night and expanding across the area on Wednesday.
More scattered thunderstorm activity is possible Thursday
afternoon and into the overnight. Better chances of storms return
Friday and Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and evening.

Preliminary Local Storm Report
National Weather Service Paducah KY
152 PM CDT Sun Jun 21 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0151 PM     Hail             Anna                    37.46N 89.24W
06/21/2026  M0.25 Inch       Union              IL   Broadcast Media

            Pea sized hail and some pictures of apparent
            rotation/wall cloud near Anna 1:30-1:45 PM
            local time.

&&

Special Weather Statement
National Weather Service Paducah KY
157 PM CDT Sun Jun 21 2026

ILZ085-088-089-211930-
Union IL-Williamson IL-Johnson IL-
157 PM CDT Sun Jun 21 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN UNION...
NORTHWESTERN JOHNSON AND SOUTH CENTRAL WILLIAMSON COUNTIES THROUGH
230 PM CDT...

At 157 PM CDT, Doppler radar was tracking a strong thunderstorm near
Goreville, or 11 miles southwest of Marion, moving northeast at 30
mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Lake Of Egypt Area.

This includes the following highways...
 Interstate 24 in Illinois between Mile Markers 1 and 4.
 Interstate 57 in Illinois between Mile Markers 40 and 50.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 900 PM CDT for southern
Illinois.

&&

LAT...LON 3755 8904 3760 8910 3770 8897 3760 8883
TIME...MOT...LOC 1857Z 236DEG 26KT 3759 8903

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

ATL