Area Forecast Discussion
Issued by NWS Sacramento, CA
FXUS66 KSTO 280419
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
919 PM PDT Wed Aug 27 2014
High pressure will bring dry weather and slightly above normal
temperatures, with a weak trough by Friday bringing
increasing high clouds and cooler temperatures into the weekend.
Near normal temperatures and dry weather for next week.
.Discussion (Tonight through Saturday)...
High pressure remains over the interior. Some low clouds have
returned to the immediate coast this evening with some cooler
temperatures in the bay. The interior is running several degrees
warmer this evening and will eventually cool off into the low to
mid 60s for the valley and 40s and 50s for the mountain valleys.
A weak wave will pass well north of California on Thursday and
flatten the ridge a little but little change in temperatures is
expected when compared to todays highs.
On Friday a deeper low will develop over the west coast and some
high clouds from hurricane Marie may spread over parts of the
interior. The trough`s position is still trying to keep the high
clouds from spreading over the northern forecast area.
The trough will move just far enough east on Saturday to allow for
some light north winds to develop over the interior. Temperatures
in the morning should be cooler but the highs may only cool
slightly over Friday`s as a result of the northerly flow.
.Extended Discussion (Sunday through Wednesday)
Dry northwesterly flow aloft over Interior NorCal Sunday into
Monday as deep short wave system progresses across the middle
part of the U.S. and upper ridging persists in the EPAC.
Temperatures are expected to be near normal. Models then show
another significant pacific short wave approaching Tuesday, tracking
across the PacNW Wed. This will bring lowering heights over NorCal as
troughing aloft deepens, resulting in some cooling with increased
onshore flow midweek.
VFR conds over interior Northern California the next 24 hours.