Area Forecast Discussion
Issued by NWS Sacramento, CA

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000
FXUS66 KSTO 201552
AFDSTO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
852 AM PDT Wed Aug 20 2014

.Synopsis...
Near to slightly cooler than normal temperatures expected through
the weekend and into early next week. A slight chance of thunderstorms
will be possible over the Sierra Nevada to the south of Lake Tahoe
late today.

&&

.Discussion...
Low clouds through the Delta and into the Valley and foothills
this morning with moderate onshore flow and a marine layer around
2500 ft (on the Fort Ord Profiler). Cloudy skies this morning near
the Delta and along the East side of Sacramento to the lower
portions of the Motherlode from around Auburn and South to around
San Andreas. The low clouds are expected to break up by noon.
Temperatures today will be similar to a little cooler than yesterday
with high temperatures in the low 80s to low 90s in the Valley and
mid 60s to mid 80s in the mountains. The low that moved down the
west coast is currently off the coast of Southern California.
The Sierra, south of Tahoe may see some wrap around for a slight
chance of thunderstorms this afternoon and early evening.
Temperatures will warm up a little tomorrow as the low moves off to
the southeast and High pressure over the Eastern Pacific nudges
into Northern California brings weaker onshore flow and not as
deep of a marine layer. A trough drops down into the Pacific
Northwest on Friday and shifts to the east over the weekend
leaving Northern California generally in Northwesterly flow aloft
between the ridge over the Eastern Pacific and trough over the
Western U.S. Temperatures will stay around to a little below
normal for the weekend. No precipitation is expected Friday into
the weekend.
&&

.Extended Discussion (Sunday through Wednesday)

By late this week, the upper low will have shifted to southern
California and into Arizona. Dry northwesterly flow will be
present over Northern California. Expect benign weather and near
normal temperatures to continue this weekend and into early next
week.

Dang


&&

.Aviation...

Mainly VFR conditions the next 24 hours across interior Northern
California. Areas of marine stratus moving into the Delta with
patchy stratus inland into the southern Sacramento valley through
about 18z for possible MVFR/IFR ceilings across Sacramento TAF
sites. Isolated Thunderstorms possible Sierra crest south of Tahoe
this afternoon and evening. South to west winds 10-15 kt except
near the delta southwest winds 15-25 knots.


&&

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

$$







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