Area Forecast Discussion
Issued by NWS Sacramento, CA

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FXUS66 KSTO 181007

Area Forecast Discussion
National Weather Service Sacramento CA
307 AM PDT Thu Apr 18 2019

Dry and warmer today. Some light precipitation possible across
Norcal late Friday through Saturday. Isolated thunderstorms
possible with high snow levels. Dry and warm again Sunday through
mid week.


High pressure ridge over the west coast will bring fair skies and
more warming today. Daytime highs should max out from 10 to 15
degrees above normal for this time of year. Upper ridge axis
shifts east of the state on Friday as a weak upper trough
approaches the coast. Daytime highs will cool a bit but still come
in well above normal. The northern coast range may even see a
little precipitation by late in the day. As the upper through
swings across the north state Friday evening through Saturday,
light precipitation will be possible mainly north of interstate
80. Enough instability is indicated with this system passage that
combined with daytime surface heating will bring a threat of
thunderstorms both Friday evening and Saturday afternoon. Daytime
highs Saturday will drop back down to around normal.

Upper ridge pushes back in over the west coast bringing an end to
any precipitation threat by Sunday morning. Daytime highs push
quickly back up again to well above normal Sunday afternoon with
fair skies going into next week.



High pressure is expected to build over the region allowing for
warm and dry conditions. Chances for precip seem to be bouncing
around at this point, with the latest guidance showing showers and
potentially even some thunderstorms developing next weekend for
the Cascades and northern mountains.



Quiet weather continues for northern California with VFR
conditions and generally light winds forecast for the next 24



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