Las Lomas, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

648
FXUS66 KMTR 161047
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
347 AM PDT Wed Jul 16 2025

...New SHORT TERM, LONG TERM, MARINE...

.KEY MESSAGES...
Updated at 347 AM PDT Wed Jul 16 2025

 - Below seasonal temperatures continue through Thursday before a
   slight warming trend begins Friday into the weekend.

 - Localized elevated fire weather threat continues across the
   higher elevations.|

&&

.SHORT TERM...
Issued at 347 AM PDT Wed Jul 16 2025
(Today and tonight)

The marine layer is around 2000 feet this morning, with stratus
blanketing the a good portion of the Bay Area and Central Coast.
Stratus is attempting to sneak into some of the valleys of the South
Bay and interior portion of the East Bay, but it`s progress seems to
have halted based on satellite imagery. For those under the blanket,
fog and patchy drizzle will be possible through the early morning
hours. By mid to late morning, you guessed it, stratus should begin
to retreat to the coast leading to sunny skies for the interior.
High temperatures for today will be below normal, with interior Bay
Area highs in the mid 70s to mid 80s while coastal or stratus
influenced areas are closer to the mid 50s to low 70s. For the
Central Coast, interior highs will range from the mid 70s to low 90s
and in the low 60s to low 70s for coastal or stratus influenced
areas.

For those above the marine layer, elevated fire weather
concerns slightly warmer and dry conditions continue. RH recovery
looks to reamin poor to moderate, while winds remain onshore.
Diurnally breezy conditions are expected each afternoon/evening
along the coast, mountain gaps/passes, and along ridgetops.

&&

.LONG TERM...
Issued at 347 AM PDT Wed Jul 16 2025
(Thursday through Tuesday)

Cooler weather on tap through Thursday, with the marine layer
compressing to about 1000-1200ft as weak upper level troughing gets
slowly pushed out of the region. A warming trend follows Friday and
into the weekend as high pressure builds over the desert soutwest,
which will likely keep the marine layer to about 1000ft or so.
Stratus will likely not be as prominent during this period, should
return by early next week as upper level troughing returns. This
should a gradual cooling trend as well putting temperatures closer
to near normal for this time of year.

&&

.AVIATION...
(06Z TAFS)
Issued at 1000 PM PDT Tue Jul 15 2025

Satellite imagery shows coastal MVFR-IFR stratus flowing into the
Sonoma County valleys, the East Bay, and the Monterey Bay region and
Salinas Valley. Expect extensive stratus coverage through the night
with moderate confidence in stratus impacts at SJC and LVK. High
resolution models are not as bullish on impacts at SJC, will monitor
observed stratus coverage overnight. Stratus mixes out Wednesday
morning, except for the immediate coast where impacts continue
through the TAF period. Light winds continue through the night
before a breezy onshore flow returns Wednesday afternoon. Some of
the inland stratus returns on Wednesday evening, but the inland
terminals remain VFR through the end of the 24-hour TAF period.

Vicinity of SFO... Moderate confidence of stratus impacts at the
terminal beginning after midnight through Wednesday morning. High
resolution models show the terminal on the edge of the stratus deck,
while satellite observations appear to show stratus coming down the
East Bay hills. Both factors lower confidence on the timing of
stratus impacts. Stratus should mix out Wednesday morning with
breezy west-southwest winds developing Wednesday afternoon and
evening, with moderate confidence of gusts reaching 25 kt. Stratus
returns to SFO sometime Wednesday evening with moderate confidence
on timing.

SFO Bridge Approach... Slightly lower confidence in stratus impacts
tonight. Otherwise similar to SFO.

Monterey Bay Terminals... MVFR-IFR ceilings continue through the
night into Wednesday morning, when stratus retreats to the immediate
coast. Breezy onshore winds will develop Wednesday afternoon and
evening, with stratus returning to the terminals late Wednesday
afternoon.

&&

.MARINE...
(Today through Monday)
Issued at 347 AM PDT Wed Jul 16 2025

Light to moderate winds continue through the weekend. Moderate
seas continue through the rest of the work week with some
rebuilding to become rough in the outer waters by Saturday.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...None.
&&

$$

SHORT TERM...KR
LONG TERM....KR
AVIATION...DialH
MARINE...Murdock

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