Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 230941

Area Forecast Discussion
National Weather Service Sacramento CA
241 AM PDT FRI SEP 23 2016

Dry through the middle of next week. Breezy north winds through
the weekend. Slightly below normal temperatures today then well
above normal over the weekend and into next week. Cooling to near
normal by the end of the week.


Flat high pressure over the region will bring dry conditions and
warmer temperatures today. The upper low which brought isolated
thunderstorms to the Sierra on Thursday has shifted eastward and
northerly flow has developed behind. A weak frontal system moving
into the Pacific Northwest will bring some clouds across the
northern CWA today but warmer airmass will still bring daytime
highs up to just a bit below normal. Upper ridge amplifies over
the west coast on Saturday bringing a warm up to several degrees
above normal. A moderate northerly surface gradient with some
upper support will bring breezy north winds through the weekend
but nothing too significant. Building ridge brings even more
warming on Sunday with daytime highs forecast to come in around 10
degrees above normal. Upper ridge axis shifts inland on Monday.
This will bring a more onshore flow to the area along with a
leveling off of daytime highs.


Strong high pressure forecast to weaken and shift east as deeper
troughing pushes into the West Coast towards the end of the week.
Dry weather expected with main impact for Interior NorCal being a
cooling trend with increasing onshore flow. High temperatures
expected to return around average.


NWly flow alf as upr low movs E and EPAC upr rdg blds inld. VFR
conds ovr Intr NorCal nxt 24 hrs.

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