Area Forecast Discussion
Issued by NWS Sacramento, CA

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000
FXUS66 KSTO 280421
AFDSTO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
921 PM PDT Wed May 27 2015

.Synopsis...
Gradually warmer temperatures through the end of the week. Daytime
highs around 10 degrees above normal by Friday. Cooler early next
week with a slight chance of showers and thunderstorms over the
northern half of the Sacramento valley and surrounding mountains
as the tail end of a Pacific trough brushes through.

&&

.Discussion...
A decent delta breeze continues once again tonight. Marine layer
has been lowering so I don`t think much if any low clouds will
spread locally into the Sacramento region towards morning again.
The low clouds will likely only make it into the western end of
the delta tonight.

Tomorrow we will start to notice temperatures getting warmer...
warming up into the mid 80s to lower 90s in the valley...with
continued warming for Friday as a high pressure ridge builds over
the west coast. Isolated thunderstorms over higher terrain look
possible both days. We should continue to get delta breezes
through the end of the week to help cool off the interior each
night but low clouds will likely remain confined to the
Bay Area.

On Saturday the ridge will begin to shift to the east and a though
of low pressure will be off the west coast. Dry conditions should
prevail and the winds should become slightly stronger during the
day. Temperatures will likely be close to Friday`s highs but may
be slightly low in the delta and areas close to the delta.

&&

.Extended Discussion (Sunday through Wednesday)

A decent waves moves across Interior NorCal late Sunday into
Tuesday. Dynamics and moisture look limited with the main impact
appearing to be synoptic cooling with increased onshore flow.
Locally gusty southwest winds expected through the Delta and over
higher mountain terrain Sunday and Monday before shifting more
west-northwesterly Tuesday. Potential showers and thunderstorms
mainly over the mountains north of I-80 through this period. High
temperatures begin to warm midweek as upper troughing shifts east
and EPAC ridging builds inland.    JClapp

&&

.Aviation...

Mainly VFR conditions over the area through Thursday. Local
IFR/MVFR in the western Delta from marine stratus. Local gusts to
35 kt in Delta overnight into Thursday morning. A few
afternoon/early evening isolated showers possible over Lassen Park
and along the Sierra crest south of KTVL Thursday.


&&

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

$$







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