Area Forecast Discussion
Issued by NWS Sacramento, CA

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000
FXUS66 KSTO 211724
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1024 AM PDT THU JUL 21 2016

.SYNOPSIS...
Daytime temperatures remaining a little below normal today then
near normal on Friday. Temperatures a few to several degrees
above normal this weekend through the coming week. No
precipitation expected through the next 7 days.

&&

.DISCUSSION...
Northern California remains under dry southwest flow aloft
between an upper low centered off the Norcal coast and strong high
pressure over the central US. Marine layer about the same depth as
24 hours ago at around 1000 feet with stratus hugging the coast
and locally moving inland. Delta breeze is about the same as
Wednesday morning as well. Temperatures Wednesday afternoon ran on
the order of a few degrees warmer and this trend has carried into
the early morning hours today with temperatures running a little
warmer than yesterday morning. Overall airmass warms just a bit
today but daytime highs should still come in a little below normal
for mid July. Offshore upper low lifts into the Pacific northwest
by this afternoon so Delta influenced areas could see a slight
cooling today if the resulting increased delta breeze comes early
enough. Once the upper trough axis shifts east of the CWA on
Friday the warm up begins as high pressure over the central U.S.
pushes back westward. Highs on Friday are expected to warm to
around normal under upper ridging and substance with more warming
over the weekend as the airmass warms each day. Highs Saturday and
Sunday are expected to come in a few to several degrees above
normal but still well below record territory during this
climatically warmest part of the year. No convection,
precipitation or even much in the way of cloud cover expected
through the short term period under stable conditions.

&&

.EXTENDED DISCUSSION (Monday THROUGH Thursday)

Upper ridging gradually builds over Interior NorCal Monday
through Thursday bringing dry weather with warming temperatures
to upwards of 10 plus degrees above normal. Triple digit heat
expected through most of the Central Valley with highs in the 80s
to 90s for the foothills and mountains.

&&

.AVIATION...


VFR conditions are expected at the terminals for the next 24
hours. An passing upper level trough of low pressure passing to
the north will bring some occasional gusty conditions mainly for
the north Sacramento Valley and northern Sierra. Light wind shifts
can also be expected through the period.

&&

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

$$



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