Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 290448
AFDSTO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
848 PM PST Wed Jan 28 2015

.Synopsis...
Dry weather expected into the weekend with night and morning
valley fog and above normal temperatures. Some breezy wind
possible Friday into Saturday. Mostly dry weather likely to
continue into early next week.

&&

.Discussion...
A weak disturbance will move through the region on Thursday. Some
mid to high level clouds will pass through the region tonight into
early Thursday. No precipitation is expected from this weak wave.
Some patches of fog may form tonight but it is not expected to be
widespread at this time.

A high pressure ridge will begin to build over the region late
Friday and Saturday and will keep the interior dry with less
cloud cover. Patches of night and morning fog will be possible
for both those days in the valley. Temperatures will remain above
normal and even warm a bit for those days. Some of the warmer
interior locations for the northern in of the valley and foothills
could warm up into the mid to upper 70s. Sacramento region
southward within the valley should stay in the mid to upper 60s.

Weak winds may allow for some more valley fog formation
Sunday morning. The ridge will remain in place for California
as a low pressure area moves into the Pacific Northwest Sunday and
Sunday night. A few showers may occur across the far northern part
of the state but for most of California will mainly be dry during
this time period.

&&

.Extended Discussion (Sunday through Wednesday)

Ridge flattens Sunday into Monday with the potential for some
disturbances moving through. This will bring a threat of
precipitation to interior Northern California, especially on
Monday. A few models now suggesting more amplitude in ridge which
would lead to a farther north storm track and lower precip
chances. If this trend continues precip chances will need to be
lowered in the next few forecast packages. No significant
precipitation is expected through the extended. High pressure
ridge builds over the Eastern Pacific Tuesday then moves over the
west coast on Wednesday bringing drier weather. Fog and low clouds
are expected in the morning in the Valley. Beyond the
extended...long range models indicate a possible pattern change to
wetter weather beginning around Feb 7th. Stay tuned.

&&

.Aviation...

Predominant VFR conditions across interior NorCal. Expect some
MVFR with local LIFR conditions to develop south of KMYV between
6Z-18z. Generally light winds continue across Valley TAF sites.

&&

.STO Watches/Warnings/Advisories...
None.
&&

$$







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