410
FXUS66 KMTR 170954
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
254 AM PDT Fri May 17 2024

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

.SYNOPSIS...
Issued at 250 AM PDT Fri May 17 2024

Quiet weather persists. Widespread stratus coverage dissipating
by mid to late morning with breezy, clear conditions developing by
the afternoon. Heading into the weekend, stratus coverage will be
diminished with stratus primarily confined to coastal regions.


&&

.SHORT TERM...
(Today and tonight)
Issued at 250 AM PDT Fri May 17 2024

Widespread stratus has returned. Current observations show no major
impacts to visibility inland with a few stations reporting reduced
visibilities directly along the coast. The marine layer has
continued to deepen with the Ford Ord Coastal Profiler showing the
top of the marine layer at ~3000 ft. Expect light drizzle overnight
in coastal areas with little to no accumulation anticipated - any
drizzle that does accumulate will be less than a few hundredths of an
inch. Inland s stratus coverage will dissipate by mid-morning with
temperatures warming into the 70`s. Along the coast, stratus
coverage will linger through the late morning/early afternoon with
temperatures staying on the cooler side in the upper 50`s to low
60`s. Friday night - inland stratus intrusions are expected to be
minimal with stratus primarily confined along the coast as the
marine layer continues to deepen.

&&

.LONG TERM...
(Saturday through Thursday)
Issued at 250 AM PDT Fri May 17 2024

Heading into the late weekend, the 500mb pattern shows a transition
from upper level zonal flow to troughing as a surface low pressure
system moves northeast of the Bay Area. This will enable the
developing deeper marine layer to persist through the week and limit
stratus intrusions to coastal regions. A slight inland warming trend
develops throughout the early work week as decreased morning cloud
coverage will lead to increased surface warming. Inland high
temperatures will largely stay in the mid to upper 70`s with the
warmest regions reaching the low 80`s. No major changes to coastal
temperatures with stratus coverage limiting surface warming and
keeping temperatures in the upper 50`s to mid 60`s. Minor heat risk
is possible Monday and Tuesday across inland portions of the Bay
Area and Salinas Valley. For individuals sensitive to heat, remember
to take breaks when outdoors and drink plenty of water. Otherwise,
this weekends weather looks warm and pleasant so take advantage and
enjoy it!

&&

.AVIATION...
(06Z TAFS)
Issued at 1144 PM PDT Thu May 16 2024

IFR and MVFR CIGs build inland through the night becoming
widespread. Winds ease slightly staying light to moderate. Cloud
cover thins in the mid morning to early afternoon Friday, leading to
widespread for the TAF sites, but status lingers on the immediate
coast. expect moderate winds  Friday afternoon and last into the
night. Coastal cloud cover moves slightly inland Friday evening,
affecting SNS and MRY.

Vicinity of SFO...IFR CIGs last through the mid morning before
clearing. Expect moderate westerly winds to reduce into Friday
morning, becoming light in the mid morning.  Moderate west winds
build into Friday afternoon, but reduce into late Friday evening.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...IFR through the the early afternoon Friday
with some moments of drizzle. CIGS recede back to the immediate
coast into the afternoon, leading to VFR at the TAF sites. Winds
stay light to moderate through the TAF Period. IFR CIGs return early
Friday evening.

&&

.MARINE...
(Today through Wednesday)
Issued at 250 AM PDT Fri May 17 2024

Northwesterly winds increase through the day, particularly over
the northernmost zones with gale-force gusts expected in the
northern outer waters. Rougher seas are expected for the outer
waters starting this weekend and lasting well into the next work
week.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory from 3 PM Saturday to 3 AM PDT Sunday for
     Pt Arena to Pt Reyes 0-10 nm.

     Small Craft Advisory until 3 AM PDT early this morning for Pt
     Arena to Pt Reyes 10-60 NM.

     Gale Warning until 3 AM PDT Sunday for Pt Arena to Pt Reyes 10-
     60 NM.

     Small Craft Advisory from 9 PM Saturday to 3 AM PDT Sunday for
     Pigeon Pt to Pt Pinos 10-60 NM.

&&

$$

SHORT TERM...Kennedy
LONG TERM....Kennedy
AVIATION...Murdock
MARINE...Murdock

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