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Somerset, Kentucky 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Somerset KY
National Weather Service Forecast for: Somerset KY
Issued by: National Weather Service Jackson, KY
Updated: 3:59 pm EDT Mar 30, 2025
 
Tonight

Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Some of the storms could produce heavy rainfall.  Low around 57. South wind 10 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Chance
T-storms then
Heavy Rain
Monday

Monday: Showers and thunderstorms likely.  Cloudy, with a temperature falling to around 57 by 3pm. Southwest wind 7 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 17 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

Monday
Night
Monday Night: Mostly cloudy, with a low around 37. North wind 3 to 8 mph.
Mostly Cloudy

Tuesday

Tuesday: Areas of frost before 9am.  Otherwise, mostly sunny, with a high near 65. East wind 3 to 5 mph.
Areas Frost
then Sunny

Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 50. East wind around 6 mph.
Partly Cloudy

Wednesday

Wednesday: Partly sunny, with a high near 81. Windy.
Partly Sunny
and Windy

Wednesday
Night
Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 66. Breezy.  Chance of precipitation is 30%.
Chance
Showers and
Breezy
Thursday

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Chance
T-storms then
Showers
Likely
Thursday
Night
Thursday Night: Showers and possibly a thunderstorm.  Low around 61. Chance of precipitation is 80%.
Showers

Lo 57 °F Hi 62 °F Lo 37 °F Hi 65 °F Lo 50 °F Hi 81 °F Lo 66 °F Hi 79 °F Lo 61 °F

Hazardous Weather Outlook
 

Tonight
 
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Some of the storms could produce heavy rainfall. Low around 57. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday
 
Showers and thunderstorms likely. Cloudy, with a temperature falling to around 57 by 3pm. Southwest wind 7 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
 
Mostly cloudy, with a low around 37. North wind 3 to 8 mph.
Tuesday
 
Areas of frost before 9am. Otherwise, mostly sunny, with a high near 65. East wind 3 to 5 mph.
Tuesday Night
 
Partly cloudy, with a low around 50. East wind around 6 mph.
Wednesday
 
Partly sunny, with a high near 81. Windy.
Wednesday Night
 
A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 66. Breezy. Chance of precipitation is 30%.
Thursday
 
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Thursday Night
 
Showers and possibly a thunderstorm. Low around 61. Chance of precipitation is 80%.
Friday
 
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 73. Chance of precipitation is 80%.
Friday Night
 
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Saturday
 
Showers and possibly a thunderstorm. High near 72. Chance of precipitation is 80%.
Saturday Night
 
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Sunday
 
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.

 

Forecast from NOAA-NWS for Somerset KY.

Weather Forecast Discussion
904
FXUS63 KJKL 302015
AFDJKL

AREA FORECAST DISCUSSION
National Weather Service Jackson KY
415 PM EDT Sun Mar 30 2025

.KEY MESSAGES...

- Multiple rounds of showers, and some thunderstorms, are expected
  into Monday. The greatest coverage for the area as a whole will
  be from tonight into early Monday morning.

- There is an Slight to Enhanced Risk of severe thunderstorms
  this evening into early Monday. Damaging winds are the main
  threat, but an isolated tornado or two can not be ruled out.

- After briefly cooler temperatures Monday night into Tuesday,
  temperatures return to above normal levels Wednesday into next
  weekend.

- Parts of eastern Kentucky may see another round of strong to
  severe storms Wednesday night.

- There is a strong signal for repeated rounds of heavy rain and
  thunderstorms for the middle to latter parts of next week
  across parts of the lower and middle Ohio River Valley. It is
  unclear at this time how much of an increased flooding potential
  extends into eastern Kentucky.

&&

.SHORT TERM...(This evening through Monday night)
Issued at 415 PM EDT SUN MAR 30 2025

19Z sfc analysis shows a decent pressure gradient between low
pressure now entering the western portions of the Ohio Valley and
high pressure east of the Appalachians. This is supporting breezy
south to southwest winds of 10 to 15 mph with gusts up to 25 mph
across eastern Kentucky as well as propping up temperatures
despite the multiple layers of clouds. It is also helping to surge
more moisture into the boundary layer providing the fuel for
storms this evening and overnight. Currently, readings are topping
out in the low to mid 70s most places while the dewpoints have
breached the lower 60s west and are up to the mid 50s in the far
east. On radar, scattered activity of mostly showers continue
through the area while the biggest storms are pounding locations
just northwest of the state closer to the sfc low and its
developing, east-bound cold front.

The models, and their individual ensemble suites, are coming into
better agreement aloft through the short term portion of the
forecast. They all depict weak energy in mid-level southwest flow
passing through eastern Kentucky into the evening. This is before
the approach of a stronger trough at 5h punches into the Ohio
Valley with a core of energy that will strafe northern parts of
the state into the first half of the night. This initial trough
will send 5h height falls through eastern Kentucky after midnight
while fast southwest mid level flow continues. The trailing
impulses will then settle the larger trough through the state on
Monday - helped along by the placement of the right entrance
region of a strong 3h jet streak over our area from the winds in
the upper atmosphere racing southwest to northeast through the
Ohio Valley and eastern Great Lakes - along with another decent
wave of energy crossing the JKL CWA by 00Z Tuesday. This happens
in the fast mid level flow that becomes more zonal through the
night with ample lingering packets of energy to pass overhead.
The, now smaller, model spread aloft supported using the NBM as
the starting point for the forecast grids through the period. Did
make some adjustments mainly to incorporate the newest CAMs
guidance into the PoP and thunder grids through the first half of
the period.

Sensible weather features mainly scattered activity around eastern
Kentucky until later in the evening until the kinematics aloft
moves closer to our area. This will likely allow some of the
instability from the daytime heating to fade, but wind fields will
only get better for organized storms through the evening. The sfc
trough out ahead of a late arriving cold front is expected to
create a QLCS of storms that will drop southeast through eastern
Kentucky late this evening into the late night hours. We will
continue to need to monitor any discrete cells out ahead of this
line for rotation and potential tornados - especially in the
locations west of the I-75 and northwest of I-64 where the latest
HRRR runs suggest a couple of updraft helicity swaths are
possible from west to east through those areas this evening. The
main severe threat for the bulk of the area arrives with the
linear storms toward late evening in the northwest and spreading
southeast during the night. Potentially damaging wind gusts and a
possibility for spin-up, brief, tornados will accompany the
stronger storms in the line. Generally lighter and steadier
showers follow into dawn, held up a bit by a wave moving along the
front, for most places before ending from northwest to southeast
during the morning and into early afternoon on Monday. This will
also bring cooler conditions for the afternoon on westerly winds.
The cooling continue into the night where if we would see clearing
some frost may be possible - generally just for locations west of
I-75.

The changes to the NBM starting point consisted primarily of
adjusting the PoPs per CAMs timing and placement through Monday
afternoon. Did not deviate too far from the NBM for temperatures
and dewpoints given the higher moisture content through the bulk
of the period followed by steady CAA.

.LONG TERM...(Tuesday through Sunday)
Issued at 304 PM EDT SUN MAR 30 2025

Tuesday morning, patchy frost may be present mainly west of the I-75
corridor. Otherwise, high pressure builds into the area through the
day, with dry conditions remaining across Eastern Kentucky up until
Wednesday morning.

Cold air advection will continue through Tuesday, keeping
temperatures seasonable, in the upper 50s to mid 60s from north to
south. During the day, a large scale 500-mb trough deepens over
western CONUS. From this an upper level low ejects out of The
Rockies into the Upper Great Lakes. Winds will likely veer, becoming
southerly through Wednesday. Eastern Kentucky will be in the warm
sector out ahead of the next approaching system mentioned above.
This will lead to continued warm air advecting in and temperatures
returning to 10-15 degrees above normal, in the upper 70s to low
80s. Clouds will increase through the day with a chance of off and
on showers through the day. Heading into the afternoon and evening
the attached cold front is modeled to extend from the Ohio Valley
down through the Mid and Lower Mississippi Valleys. Shower and
thunderstorm chances exist for the state, with the SPC having
Eastern Kentucky under a 15% a risk of severe weather. Breezy
conditions are possible Wednesday, with the NBM guidance showing
gusts around 30 mph. LREF 00Z ensemble data continues to have mean
wind gust of 40 mph, with the general spread between the 25th and
75th percentile being 35-45 mph. We`ll continue to monitor this
threat.

Deterministic models and ensembles have the front late Wednesday
becoming rather stationary over Kentucky and surrounding states
through Saturday. With precipitable water consistently modeled
between 1 and 1.5 inches each day, flooding could be a possibility.
The WPC has highlighted this threat with placing a portion of the
area under a marginal risk for excessive rainfall. For Thursday,
showers and thunderstorms continue across Eastern Kentucky. With the
lack of a progressing front and persistent rain, the WPC has put the
area under a slight risk and marginal risk for excessive rainfall.
Current guidance has this stationary boundary further west across
Western and Central Kentucky, and surrounding areas, which is why
that area is in a moderate risk for excessive rainfall. Temperatures
will likely remain 10-15 degrees above the climatological averages,
in the upper 70s to low 80s.

During the day Thursday, an area of low pressure rides the lee side
of a ridge, into the deep trough over Western CONUS. While being
slow to propagate downstream, it will eventually be what moves the
stationary front away from the state, later Sunday or Monday. With
winds currently expected to veer Saturday into Sunday from a
southwest wind to a northwest wind, cold air advection may temper
temperatures Sunday, rising into the low 60s to upper 60s going
north to south.

&&

.AVIATION...(For the 18Z TAFS through 18Z Monday afternoon)
ISSUED AT 150 PM EDT SUN MAR 30 2025

Mainly VFR conditions with scattered shower activity to start the
cycle will gradually give way to showers of increasing intensity,
as well as a few thunderstorms into evening. The most intense
showers and thunderstorms will be capable of producing strong
winds primarily between 00Z this evening and 06Z Monday. These
showers and storms will also likely cause reductions to IFR
conditions or lower for CIGs, and briefly, visibility. Low CIGs
and diminished visibilities continue from showers through Monday
morning ahead of the main cold frontal passage.

Winds will generally be southerly at 10 kts or so to begin the
period with periodic gusts as high as 20 kts through the evening -
outside of any storms. We still see the potential for stronger and
more erratic winds late this evening and into the overnight with
the more intense thunderstorm activity, though sustained non-
thunderstorm winds will generally be around 5 to 7 kts or less
after 00Z and through the rest of the night. The main cold front
will pass during the day, Monday, and switch wind direction to the
west at 5 to 10 kts. Times of LLWS will be possible through the
night, as well, but the signal was not strong enough to carry as
prevailing in the TAFs, at this time.

&&

.JKL WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...GREIF
LONG TERM...GINNICK
AVIATION...CMC/GREIF
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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