Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 222102
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
202 PM PDT Sun Oct 22 2017

.SYNOPSIS...
Warming temperatures through early this week. Breezy north to
east wind tonight into Tuesday.

&&

.DISCUSSION...
A ridge will gradually build the next couple of days with a
warming trend each day and temperatures warming to between 10 to
15 degrees above normal for this time of year. Surface high
pressure will increase over Oregon and into the Great Basin
tonight into Monday. This will result in northerly flow in the
valley and northeast to east flow in the Mountains and foothills.
The strongest flow will be during the afternoons in the valley and
at night in the mountains and foothills. Winds dont look all that
strong with winds primarily in the 10 to 15 mph range at its peak
with some higher gusts for the valley. Locally stronger winds may
occur over the north and west side of the valley. The mountains
may locally get a little stronger than that with sustained winds
20 to 25 mph and local gusts up to 40 mph. By Tuesday the winds
will be easing up for most areas and becoming lighter.
Temperatures will become the warmest on Tuesday topping out in the
upper 80s to lower 90s for many valley locations.

The ridge will briefly start to get pushed to the southwest on
Wednesday by a weak system moving into the Pacific Northwest.
This system will end up moving through the Great Basin Wednesday
night and may increase northerly winds a bit by Thursday.
&&
.EXTENDED DISCUSSION (Thursday THROUGH Sunday)

Amplified upper ridging pattern will continue to dominate over
California through the extended period. As a result, dry
conditions will persist across the forecast area. A slider trough
is progged to weaken the ridge slightly, leading to a slight cool
down. However, daytime highs could still range 5-10 degrees above
seasonal normals. The mid-week system is now forecast to be
further to the east, so north winds don`t look as breezy for
Thursday.
&&

.AVIATION...

VFR conditions the next 24 hours across interior NorCal.
Northerly winds 10-15 kts develop thru the Central Valley 18Z-02Z
Monday. Gusts in the vicinity of KRBL and KRDD could range between
15-20kts, then decrease after 01z Monday.
&&

.STO WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$


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