Klamath Falls, Oregon 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

111
FXUS66 KMFR 030523
AFDMFR

Area Forecast Discussion
National Weather Service Medford OR
1023 PM PDT Wed Apr 2 2025

...Updated AVIATION discussion for 06Z TAFs...

.AVIATION...03/06Z TAFs...Light scattered showers continue but are
decreasing across the area tonight. VFR levels are expected to
prevail through most of the TAF period. Slight chances of
development remain for Roseburg and Klamath Falls. Guidance has
backed away from fog in the Umpqua Valley tonight, replacing that
outcome with a period of MVFR ceilings. Timing for possible fog in
Klamath Falls has also been included in the TAFs. Confidence in both
of these possibilities is slight to moderate at best, but they are
included in the absence of other activity. Anything that does
develop overnight should clear out before Thursday afternoon.

Other areas are expected to see VFR levels through Thursday. -TAD

&&

.PREV DISCUSSION... /Issued 500 PM PDT Wed Apr 2 2025/

DISCUSSION...A long wave upper trough is settling into the Great
Basin and moving slowly toward the Four Corners region. The PacNW
is currently on the back side of this upper trough with northerly
flow aloft. Some energy in the northerly flow aloft and
instability due to daytime heating is resulting in isolated to
scattered showers this afternoon, especially from the Cascades and
Siskiyous north and west, but also over Winter Rim and the
Warners. Some of these may contain brief gusty winds. An isolated
shower or two still could pop up outside those locations as well
through this evening. Coverage of showers should diminish
around/after sunset and cloud cover should also gradually break
up. While we`re getting out of the time of year for fog formation,
there is a 20-30% chance some forms in the west side valleys
toward morning. This is most likely in the Umpqua Basin, where low
level moisture is highest. Low temperatures tonight will be a bit
below normal. So, it`ll be chilly east of the Cascades with lows
largely in the 20s. West side valleys will bottom out in the 30s,
which could lead to patchy frost where it is clear long enough
(perhaps Illinois Valley).

High pressure offshore will build into the area on Thursday. There
is still just enough instability for a slight chance/isolated
rain/snow showers in far SE sections during Thursday afternoon,
but most areas will be dry and turn milder, though high
temperatures remain mostly below normal.

Chilly mornings and milder afternoons are expected Friday and
Saturday with a period of drying east winds Friday, which will
shift to southerly during Saturday. The warming trend continues
with high temperatures of 5-10F above normal west of the Cascades
Friday (near 70F west side valleys) and 10-15F above normal there
on Saturday (mid 70s). East side areas warm more gradually, but
still end up about 5-10F above normal on Saturday (generally
60-65F for highs).

Sunday will be a transition day as the next trough approaches the
coast. This will probably be the warmest day east of the Cascades,
but increasing cloud cover should result in slightly cooler
temperatures west of the Cascades. Expect an uptick in southerly
winds in the usual spots (along the coast, in the Shasta Valley
and over the East Side), but overall, just a breezy afternoon.
Rain chances increase along the coast and rain is likely there, if
if not late morning, then by afternoon. Most other areas escape
the day dry, but there is a chance of rain along I-5 (30-50%)
Sunday afternoon. A period of rain moves through most areas
Sunday night with snow levels around 7500 feet dropping to the
higher passes (5000 feet) by Monday morning. Post-frontal showers
continue Monday.

Flat ridging will build into the area Tuesday with the storm
track expected to shift far enough north to keep conditions dry,
except for the northwest part of the forecast area. Even then,
were only expecting a slight chance of rain. -Spilde


MARINE...Updated 200 PM Wednesday, April 2, 2025...Overall,
expect seas of 6 to 9 feet at 10 seconds with north to northwest
winds generally in the 10-20kt range into tonight. Northerly
winds increase once again on Thursday which will result in steep
short-period seas. We have issued a Small Craft Advisory out to
20 NM from shore off Cape Blanco, and extending to 60 NM from
shore off Pt. St. George. Then, another period of improving
conditions is expected Friday through Saturday. A building long
period (18-20 seconds) west swell is anticipated on Sunday, and
this will likely lead to steep seas once again. -Spilde

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...CA...None.

PACIFIC COASTAL WATERS...Small Craft Advisory from 11 AM Thursday to
     3 AM PDT Friday for PZZ356-376.

&&

$$