Spreckels, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

359
FXUS66 KMTR 101753
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
1053 AM PDT Thu Apr 10 2025

...New AVIATION...

.SYNOPSIS...
Issued at 320 AM PDT Thu Apr 10 2025

Warm temperatures and light winds will continue today with minor
HeatRisk concerns. Pleasant weather will continue through the
weekend into the beginning of next week.

&&

.UPDATE...
Issued at 828 AM PDT Thu Apr 10 2025

Drizzle is being reported along coastal areas this morning, yet
conditions are forecast to improve by late morning. However,
rainfall amounts have been a trace to 0.01". Thus, widespread
measurable rainfall is not expected. Temperatures across the
interior this afternoon are forecast to warm into the mid/upper 70s
and lower 80s across the Central Coast. Closer to the coast, look
for upper 50s to lower 70s. Otherwise, the forecast track remains on
track this morning with no updates anticipated at this time.

RGass

&&

.SHORT TERM...
(Today and tonight)
Issued at 320 AM PDT Thu Apr 10 2025

A progressive longwave pattern, with our area situated on the
backside of a flattening upper level ridge, will continue to steer
more impactful troughing to our north. A weak shallow marine layer
can be seen along the coastline extending from the Norcal south to to
Santa Cruz. The shallow marine layer will struggle to advance
farther inland through the remainder of this morning before mixing
out later today. A trough axis well to our north will move inland
this afternoon and push a weak and dry cold front south into our
area tonight. The cooler and more importantly, drier airmass will
help limit widespread stratus development late tonight into early
Friday morning.

&&

.LONG TERM...
(Friday through Wednesday)
Issued at 320 AM PDT Thu Apr 10 2025

The progressive synoptic pattern will leave our area in between more
potent energy moving inland to our north across the Pacific Northwest
and a cut off low spinning off the coast of SoCal to our south. The
weak forcing across the Bay Area and Central Coast will make
forecasting the impacts of the potential marine layer development
the next few days a little more difficult, but otherwise expect very
pleasant spring weather through the extended forecast. The cooler
and drier airmass in place tomorrow and Saturday will result in some
cooler than normal temperatures to start the day, before quickly
improving by midday. The cutoff low begins to split from the
synoptic flow late Saturday, and then begins to retrograde off the
SoCal coast by Sunday. Overall this will result in weak but
steady offshore flow Sunday and Monday lifting temperatures back
up to around 5 degrees above normal and the return of more
widespread minor HeatRisk concerns to begin next week. The
extended forecast remains dry with the exception of some spotty
coastal drizzle at times. Long term deterministic guidance
suggests it will be over 10 days until our next chance at
meaningful rainfall.

&&

.AVIATION...
(18Z TAFS)
Issued at 1052 AM PDT Thu Apr 10 2025

VFR through much of the day Thursday. Onshore winds increase across
the Bay Area and Monterey Bay terminals this afternoon before easing
a bit into Thursday night. MVFR/IFR conditions return to most TAF
late this evening around the Monterey Bay Terminals and coastal site
that will then spread inland early Friday morning. This will be in
response to a shallow marine layer in place. Low clouds that do
develop with mix out by midday Friday.

Vicinity of SFO...VFR. Onshore winds will increase this afternoon
with gusts between 20-25kt. Wind speeds ease Thursday night into
Friday morning, yet are expected to remain out of the west-
northwest. Then potential for MVFR/IFR conditions return early
Friday morning, but should be short lived. They are forecast to
scatter out by midday Friday and become VFR thereafter.

SFO Bridge Approach...Similar to SFO. Low clouds have less potential
to develop over the approach Friday morning.

Monterey Bay Terminals...VFR. A slight increase it northwest winds
expected through this afternoon before they ease Thursday evening
and into Friday morning. Greater probability for IFR conditions
return Friday morning with periods of LIFR ceilings and/or
visibilities.

&&

.MARINE...
(Today through Tuesday)
Issued at 828 AM PDT Thu Apr 10 2025

A coastal jet will result in locally stronger winds for areas
south of Point Sur causing hazardous conditions for small craft
through the end of the week. Northwest winds will strengthen to a
fresh to strong breeze by Friday with near gale force gusts,
especially across the norther outer waters. A larger swell will
build over the weekend and early next week.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory from 9 AM Friday to 3 AM PDT Saturday for
     Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60
     NM-Pt Arena to Pt Reyes 0-10 nm-Pt Reyes to Pigeon Pt 0-10
     nm.

     Small Craft Advisory until 3 AM PDT Saturday for Pt Pinos to Pt
     Piedras Blancas 0-10 nm.

     Small Craft Advisory from 9 AM to 3 PM PDT Friday for Pt Arena
     to Pt Reyes 10-60 NM.

     Gale Watch from Friday afternoon through late Friday night for
     Pt Arena to Pt Reyes 10-60 NM.

&&

$$

SHORT TERM...JM
LONG TERM....JM
AVIATION...RGass
MARINE...RGass

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