Somerset, Kentucky 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

413
FXUS63 KJKL 272216
AFDJKL

AREA FORECAST DISCUSSION
National Weather Service Jackson KY
616 PM EDT Sat Jun 27 2026

.KEY MESSAGES...

- Showers and thunderstorms will be prevalent through early
  Sunday, followed by much lower probabilities during most of the
  work week. Heavy rain may lead to flash flooding.

- Heat and humidity will become oppressive during the new week.

&&

.SHORT TERM...(This evening through Sunday night)
Issued at 615 PM EDT SAT JUN 27 2026

Convection which caused so much trouble during the day is long
gone and we are in a lull. However, the synoptic setup is still
similar to last night. There is modest zonal flow aloft with minor
ripples in it. We have a very moist air mass in place with PWs
near 2" and no meaningful cap. Although features are weak, that`s
all it`s taking to get convection going. However, weak features
which are somewhat mesoscale in nature are difficult for models to
handle. The end result is that there are models generating
training convection with heavy rainfall again tonight, but
without consistency for when/where. The general consensus is the
the part of the JKL forecast area most at risk is in the south.
That being the case, the Flood Watch is still set to expire this
evening in the north, but runs through the night in the south.
Depending on the model, there is some potential for heavy rainfall
to run into Sunday morning. Trends will need to be monitored to
see if another watch extension might be needed for some counties.

By Sunday morning upper level ridging will be building over the
Mississippi Valley and ending convection upstream. This ridging
builds east during the day and any lingering precip will taper off
in our area during the day and into the evening. Dry weather then
lasts through the rest of Sunday night, with the very strong upper
high anchored over KY by dawn on Monday.

.LONG TERM...(Monday through Saturday)
Issued at 353 PM EDT SAT JUN 27 2026

The extended period opens Monday morning with the area transitioning
from a fairly active pattern, into a quiet yet hot one through next
week. Analyzing modeled 500-mb heights, high pressure is positioned
over the Tennessee Valley, with the ridge axis extending further
north, through the Upper Great Lakes and into Southern Ontario.
Farther upstream to the west, a large scale trough positioned over
the Great Basin, features upper level disturbance over the Northern
Rockies.

Across Eastern Kentucky, isolated to scattered storm activity may
last through Monday afternoon, as a stationary front just north of
the forecast area, retrogrades back west as a cold front from being
on the lee side of the ridge axis. These generally remain under a
25% of occurrence, located in the Upper Cumberland or southern
portions of the Kentucky River Basins. With high pressure near or
over Kentucky, storm chances remain very isolated Tuesday and
Wednesday. Scattered storm chances return towards the end of the
week (Thursday and beyond), with a shortwave modeled to eject out of
the western trough towards the Ohio Valley. The result will be the
ridge flattening, leaving Eastern Kentucky more susceptible to
additional storm activity. The return of active weather looks
plausible heading into the nations 250th anniversary of independence.

With abundant clearing, light winds, and little forcing across the
area, patchy areas of river valley fog is expected to develop Monday
evening.

Temperatures will generally warm into the low to mid 90s during the
afternoons and cool into the upper 60s to lower 70s at night through
the extended period. Models depict dewpoints remaining elevated in
the upper 60s to mid 70s next week, leading to hot and muggy
conditions. Heat indices of 100-105F remain possible Monday trough
Friday next week.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
ISSUED AT 615 PM EDT SAT JUN 27 2026

Showers/thunderstorms were ongoing at the start of the period,
mainly over the southern part of the forecast area. Conditions
were largely MVFR and IFR, but there were some pockets of VFR
(mainly in the north, outside the precip). The precip has since
exited the area, leaving mainly VFR conditions with some pockets
of MVFR. However, another round of convection is ongoing over
western and central Kentucky and is heading east. The exact
evolution of this next round of convection is uncertain, but it is
likely to bring deteriorating conditions back to our area tonight,
with generally MVFR and IFR expected to return. This lasts into
Sunday, with perhaps some improvement near the end of the period.

&&

.JKL WATCHES/WARNINGS/ADVISORIES...
Flood Watch until 8 PM EDT this evening for KYZ044-050>052-059-
060-104-106.

Flood Watch through late tonight for KYZ058-068-069-079-080-
083>088-107>120.

&&

$$

SHORT TERM...HAL
LONG TERM...GINNICK
AVIATION...HAL