Flash Flood Warning 47, NWS Louisville, KY

Area Forecast Discussion
National Weather Service Louisville KY
321 AM EDT Mon Jun 22 2026

.KEY MESSAGES...

* Scattered showers and storms linger through the late morning into
  the evening hours. An additional 0.25-0.75" of rain is expected
  through KY, with isolated 1-3" in the SE CWA.

* Lingering rain showers will return for the later half of the week
  into the weekend.

* Upper level ridging will move into the region bringing warm and
  dry conditions to end the weekend.

&&

.SHORT TERM /THROUGH TONIGHT/...
Issued at 320 AM EDT Mon Jun 22 2026

=====Monday-Monday Night=====

Storms continue to press east across the area being aided by enough
low to mid level shear to sustain them. Because of this, these cells
continue cycling and forming weak mid to low level rotation through
the night and will continue over the next few hours. Our saving
grace it seems is a stable layer at the surface keeping this
rotation elevated. Small hail, gusty winds, frequent lightning and
heavy downpours remains the main threat from any severe weather. As
the night progresses, our focus turns into a flash flooding threat.

Much of these storms are tracking over the same areas, creating
flooded roadways in isolated western counties. Similar localized
impacts will continue as these storms continue trekking east. SW
Indiana counties along with Meade and Breckinridge counties have
seen 2-4+ inches tonight, with more rounds of rain incoming. Flash
Flood Warning exists for those specific counties and should these
storms sustain themselves long enough as they track east, more of
these products being issued can't be ruled out. PWATs remain
elevated in the 1.6-1.8" range, so heavy downpours and training
storms will continue into the early morning hours.

Eventually, the shear at low to mid levels will exit towards our
northeast by sunrise, allowing any remaining storms to weaken with
additional nocturnal cooling. The low pressure creating these storms
will follow a jet streak towards the northeast as well, dragging a
slowly moving cold front behind it. As a result, clouds, showers,
and a few storms will linger and be spotty in coverage this morning.
PWATs will remain elevated as we will keep the same humid air mass
in place in time for diurnally driven showers and storms to return
by late morning into the afternoon hours. HREF mean SBCAPE values
are somewhat modest ranging 1000-1250 J/kg tomorrow afternoon, and
with little shear in place, the main severe threat will likely be
gusty winds, lightning and heavy downpours.

The severe risk is somewhat limited by the lack of shear overhead
tomorrow afternoon, though the flash flooding threat will need to be
monitored for tomorrow afternoon. Current HREF 3hr PMM data keeps
the highest chances of >1+" rates east of our CWA, though a Flood
Watch may be needed towards some of our SE counties depending on the
amount of rain that falls from the current storms this morning. The
main concern would be isolated areas of flash flooding from training
storms somewhat similar to Sunday's event. Monday's rainfall totals
range near 0.25" along and SE of the Ohio River with lesser values
in southern Indiana. Higher totals of 0.5-0.75" are expected (50-
75%) in a SW-NE oriented line from Monroe to Franklin County along
the orientation of the incoming cold front. Localized pockets of 1-
3" are possible in training storms which will be monitored for
flash flooding threats as the evening hours draw closer.

As the day progresses, the cold front will sweep through shifting
winds from the NW, dropping PWATs, and pushing rain out of the CWA
towards the SE by the evening hours. Highs before the cold front
arrives will be in the mid 70s in the NW to low 80s in the SE.
Clouds linger until late tomorrow night as temperatures cool into
the low 60s. Areas of patchy fog may develop Monday night into
Tuesday morning, though chances remain low (~20%) and all depends on
how quickly the cold front can clear clouds away before sunrise
Tuesday morning.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
Issued at 320 AM EDT Mon Jun 22 2026

As surface high pressure continues over the region, a dry Tuesday
with maximum temperatures in the low 80s is expected. Maximum
temperatures will gradually increase through the middle part of the
week with highs in the mid to upper 80s by Thursday.

The next chance for precip will come on Thursday as zonal flow will
bring a shortwave disturbance east into the region. Additionally, a
weak surface low will also develop in the Great Lakes region causing
a cold front to stretch through central IL and central MO. Lingering
rain showers will basically persist from Thursday evening into
Saturday while both features move through. The highest amounts of
QPF are along and north of the Ohio River as this is where the ample
moisture axis lies. The heaviest wave of rain currently looks to
move into the area overnight Thursday into Friday morning. By Sunday
morning upper level ridging will move in bringing drier and warmer
weather conditions. Some areas in the CWA may even see 90
degrees for Sunday and into early next week.

&&

.AVIATION /06Z TAFS THROUGH 12Z TUESDAY/...
Issued at 148 AM EDT Mon Jun 22 2026

VFR to MVFR conditions will continue through the overnight and early
morning hours. Scattered showers mixed with storms will linger
through the morning as well. Visibilities will mostly remain high
though may briefly dip below 6SM at times with passing storms.
Ceilings should remain in low end VFR to high end MVFR through the
morning hours, except for passing storms as well. An approaching
cold front will slowly move through, shifting winds from S to the
WNW by late in the TAF period. BWG/LEX has the highest chance of
seeing showers and storms through the night and into tomorrow,
though the timing is uncertain. Otherwise, winds gust out of the SW
near 20kts with the passing rain before winds shift WNW late in the
TAF period. VFR conditions should prevail tomorrow from late morning
through the afternoon.

&&

.LMK WATCHES/WARNINGS/ADVISORIES...
KY...Flood Watch from 8 AM EDT /7 AM CDT/ this morning to noon EDT
     /11 AM CDT/ today for KYZ023>043-045>049-053>057.
IN...Flood Watch until noon EDT /11 AM CDT/ today for INZ076>079-
     083-084-089>092.

&&

SHORT TERM...BKF
LONG TERM...CAL
AVIATION...BKF

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Preliminary Local Storm Report
National Weather Service Louisville KY
520 AM EDT Mon Jun 22 2026

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

0935 PM     Tstm Wnd Dmg     2 E Holland             38.25N 87.00W
06/21/2026                   Dubois             IN   911 Call Center

            Electric lines/ pole down across the road at
            West 900 South and South 500 West.

&&

CAL

Preliminary Local Storm Report
National Weather Service Louisville KY
523 AM EDT Mon Jun 22 2026

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

0959 PM     Tstm Wnd Dmg     2 NW Salem              38.62N 86.12W
06/21/2026                   Washington         IN   911 Call Center

            Trees down at N Highland Rd and W Cox Ferry
            Rd.

&&

CAL

Preliminary Local Storm Report
National Weather Service Louisville KY
529 AM EDT Mon Jun 22 2026

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

0340 AM     Tstm Wnd Dmg     Bardstown               37.81N 85.46W
06/22/2026                   Nelson             KY   911 Call Center

            Large tree down in roadway (too large to
            move) at Bloomfield Rd and Gaffney Ln.

&&

CAL

Preliminary Local Storm Report
National Weather Service Louisville KY
531 AM EDT Mon Jun 22 2026

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

0340 AM     Flood            Bardstown               37.81N 85.46W
06/22/2026                   Nelson             KY   911 Call Center

            Roadway shut down due to flooding
            (Bloomfield Road and Gaffney Lane).

&&

CAL

Preliminary Local Storm Report
National Weather Service Louisville KY
535 AM EDT Mon Jun 22 2026

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

0110 AM     Tstm Wnd Dmg     2 SSW Chaplin           37.88N 85.23W
06/22/2026                   Nelson             KY   911 Call Center

            Large tree down blocking 1 side of the
            roadway on Old Tunnell Mill Rd.

&&

CAL