Somerset, Kentucky 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

017
FXUS63 KJKL 211140
AFDJKL

AREA FORECAST DISCUSSION
National Weather Service Jackson KY
740 AM EDT Tue Apr 21 2026

.KEY MESSAGES...

- A warming trend will begin today and last through Friday

- The next expectation of area wide rain is not until the weekend.

&&

.SHORT TERM...(Today through Wednesday)
Issued at 740 AM EDT TUE APR 21 2026

Early this morning, an upper level trough is departing to our
east while ridging slowly approaches from the west. In between,
our upper level flow is from the WNW. A weak wave rippling through
the flow is supporting a cold front currently over the upper
Midwest. Ahead of the front, our low level flow will pick up out
of the southwest today and start a significant warming trend.
Moisture will be slower to increase, with flow off the gulf
looping around us well to the west before it gets drawn in ahead
of the front. The front will make some progress southeastward
through Wednesday, but as ridging aloft approaches and the flow
becomes much weaker, the front will lose momentum. Showers and
thunderstorms are expected to develop near the front to our north.
They could make it into our northeastern counties on Wednesday,
but are more likely further north, closer to the stalling
boundary.

.LONG TERM...(Wednesday night through Monday)
Issued at 740 AM EDT TUE APR 21 2026

The aforementioned frontal boundary in the short term segment will
be stalled in IN and OH at the start of the period and will begin
a northward retreat Wednesday night. Upper level ridging arriving
from the west will result in warm and dry weather for the local
area into the day Friday. A series of shortwave troughs coming
out of a degrading western CONUS longwave trough will then eat
away at the ridge. Low level moisture should also finally creep
higher as surface ridging/high pressure over the southeast CONUS
weakens and shifts offshore. The combination of waves aloft,
lowering geopotential heights, and increasing low level moisture
should finally allow for rainfall for most of the area, with the
most likely time being Friday night into Saturday.

&&

.AVIATION...(For the 12Z TAFS through 12Z Wednesday morning)
ISSUED AT 740 AM EDT TUE APR 21 2026

VFR conditions will persist through the period. Southwesterly
winds will gust near 20 kts west of the foothills this afternoon.

&&

.JKL WATCHES/WARNINGS/ADVISORIES...
Frost Advisory until 9 AM EDT this morning for KYZ044-050-051-
058>060-069-080-085.

Freeze Warning until 9 AM EDT this morning for KYZ052-086>088-
104-106>120.

&&

$$

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