Weather Service Report


742 
FXUS66 KSTO 260423
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
923 PM PDT MON JUL 25 2016

.SYNOPSIS... 
Daytime highs will be well above normal through Friday. Cooler
next weekend.

&&

.DISCUSSION...
Temperatures have been running cooler this evening for most
interior locations. The marine layer is below 1000 feet deep 
and wont have much impact on the interior the next several days.
The Bay Area temperatures have been trending warmer this evening
so expect temperatures to warm faster during the morning hours
after most of the interior valley cools off into the 60s tonight.

Tomorrow and Wednesday is when the high pressure from the
Southwest begins to build over our area and temperatures will
likely range from 103 to 111 degrees throughout the valley. The
hottest temperatures will be over the Northern Sacramento valley.
Wednesday's and Thursday's records are not as high as Tuesday's
records so temperatures could be nearing record heat both those 
days.

We will have to keep an eye out for some possible monsoonal
moisture working it way northward later in the week and impacting
parts of the Sierra Nevada. Mainly from about Wednesday on is
when we could see some possible thunderstorms this far north.

&&

.EXTENDED DISCUSSION (Friday THROUGH Monday)

One last very hot day expected Friday as strong high pressure rules. 
Model differences remain for the weekend but ECMWF has started to
shift toward GFS and GEM solutions with troughing developing, just
toward the end of the weekend instead of by Saturday. Weakening
ridge may serve to draw monsoon moisture northward from the
desert with a few thunderstorms possible across the high Sierra on
Friday and Saturday afternoon. Regardless of timing or strength of
troughing, some cooling is expected across the region and
temperatures may fall back down toward normal levels by Sunday.

CEO

&&

.AVIATION...

VFR conditions next 24 hours. Winds generally below 10 knots.

&&

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

$$

Return to Home page


Western Regional Climate Center, wrcc@dri.edu