Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 231045
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
345 AM PDT Mon Oct 23 2017

.SYNOPSIS...
Dry and warm weather this week. Locally breezy northerly winds
into Tuesday.

&&

.DISCUSSION...
Clear skies across interior NorCal under strengthening high
pressure. Surface pressure gradients have continued to increase
since Sunday (MFR-SAC now nearly 9 mbs and RNO-SAC around 6.5 mbs)
resulting in some locally breezy north to east winds across the
northern Sacramento Valley and surrounding terrain, and across the
northern Sierra. Current temperatures are running around 5-10
degrees milder compared to 24 hours ago with breezier locales in
the Sacramento Valley running 15-25 degrees warmer!

Northerly breezes spread south and are expected to peak in the
Central Valley today (likely below wind advisory criteria), but
remain breezy on Tuesday. Gusty northeast winds across the
foothills and northern Sierra are expected to peak tonight and
early Tuesday with some local gusts around 40 mph possible.
Lighter winds expected by mid-week.

Record or near record warm temperatures will be possible across
the Central Valley the next few days as highs top out in the mid
80s to lower 90s (around 15 degrees above average for late
October). Some minor cooling will be possible after mid-week as
the ridge retrogrades slightly in response to a system moving
through the PacNW into the Rockies.

&&

.EXTENDED DISCUSSION (Friday THROUGH Monday)
Strong upper high centered over the area Friday will gradually
weaken to ridge and shift over the Great Basin through the weekend
into early next week. This will result in continued dry weather
with above normal temperatures. High temperatures on Friday will
be around 10 degrees above normal, trending down to about 3 to 5
degrees above normal by next Monday.

&&

.AVIATION...
AMS warms tda as high pres blds ovr fcst area. VFR conds ovr Intr
NorCal nxt 24 hrs. In Cntrl Vy, areas Nly sfc wnd gsts up to arnd
25 kts poss til arnd 01z Tue. In fthls/mtns, lcl N to E sfc wnd
gsts up to 35 kts poss til 18z Tue.

&&

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

&&

$$



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