FXUS66 KSTO 141030
Area Forecast Discussion
National Weather Service Sacramento CA
330 AM PDT Tue Aug 14 2018
Not as hot through mid-week. Highs trend upwards late this week
reaching around 5-10 degrees above average by the weekend. Smoke
impacts from wildfires may increase again this week.
Clear skies across the region early this morning except for a few
clouds lifting up from the south ahead of a weak vort presently
over SoCal. The marine layer is around 1500 ft deep and stratus is
extending further inland than early Monday. Current temperatures
are mostly a little cooler compared to 24 hours ago and range from
the mid 40s in the cooler mountain valleys to the upper 50s to
around 70 across the Central Valley.
Not a whole lot of change in the weather is expected across
interior NorCal the next several days as the region remains
between a weak trough off the coast and strong high pressure over
the Southwest. A few showers or thunderstorms will be possible
over the northern Sierra today into this evening as the vort lifts
to the north, but the main threat is expected to be east of the
crest. Temperatures will remain seasonably hot. The Delta Breeze
will continue to moderate temperatures into the Sacramento region.
High pressure forecast to strengthen toward the end of the weak as
the trough finally lifts out. This will result in a warming trend
heading into the weekend.
.EXTENDED DISCUSSION (Saturday THROUGH Tuesday)
Upper ridging moves through Interior NorCal over the weekend with
high temperatures warming to about 4 to 7 degrees above normal.
Upper low then progged to move across Oregon Monday into Tuesday
with associated upper troughing over the CWA. This will result in
minor cooling with increased onshore flow. Highs remain several
degrees above normal with breezy conditions expected in the Delta
and over higher terrain in the afternoon into evening hours. Dry
weather persists through the extended forecast period.
Lcl MVFR/IFR conds in HZ/FU fm fires conts nxt 24 hrs with lcl
MVFR/IFR conds in ST vcnty of Delta til arnd 19z. Lcl SWly sfc wnd
gsts to 30 kts vcnty of Delta. Lcl Wly sfc wnd gsts to 25 kts
poss ovr hyr mtn trrn and isold tstm nr Siernev crest btwn 21z-
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