678
FXUS66 KMTR 061939
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
1239 PM PDT Thu Jun 6 2024

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

.SYNOPSIS...
Issued at 1215 PM PDT Thu Jun 6 2024

Slightly cooler temperatures today with a further cool down into
the weekend. Another warming trend on the way for early next week.

&&

.SHORT TERM...
(This evening through Friday)
Issued at 1215 PM PDT Thu Jun 6 2024

Mid day temperatures running anywhere from 3 to 15 degrees cooler
than yesterday depending on location. Thanks to the upper level
ridge migrating eastward and a transient shortwave trough moving
into the West Coast. This is evident in not only the marked
decrease in temperatures, but via vertical profilers showing a
deepening of the marine layer as large scale subsidence
diminishes. Overnight lows tonight are expected to be about 1-5
degrees cooler than last night, and highs Friday look to be about
3-6 degrees cooler than today...unless you`re along the coast, in
which the only noticeable difference day-to-day will be increased
overnight cloud cover and potentially morning drizzle into the
weekend.

&&

.LONG TERM...
(Friday night through next Wednesday)
Issued at 1215 PM PDT Thu Jun 6 2024

Things stay pretty quiet through the weekend. Onshore flow and
slightly above average temperatures prevail, and guidance hints at
a deeper upper level trough associated with the deep low in the
Gulf of Alaska sitting offshore of the West Coast into the start
of next week. As previously mentioned, this will likely just
result in increased cloud cover along the coast and AM drizzle for
coastal and high elevation locations through Sunday. By Monday,
the trough begins to break down and become replaced by another
ridge pattern, which leads to our next warm up. At the moment,
ensemble guidance is leading us to believe that it will not be
quite as warm as the last couple of days, but it is a period
we`re watching for potential highlights with Tuesday looking like
the peak based on this forecast issuance.

&&

.AVIATION...
(18Z TAFS)
Issued at 1033 AM PDT Thu Jun 6 2024

VFR prevails across all terminals late this morning and is
expected to persist through the remainder of the afternoon and
evening hours. Low stratus cloud field continues to gradually
build and expand over the water and will eventually begin to fill
in over coastal locations after midnight tonight and continue
through the remainder of the forecast period.

Vicinity of SFO...VFR is expected to prevail through the the
afternoon and evening hours with gusty winds later today beginning
to ease after sunset. Low stratus ceilings are expected to build
in during the overnight/pre-dawn hours and persist into Friday
afternoon.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR is expected to persist this afternoon
and evening with low stratus clouds encroaching on the terminals
at times. LIFR/IFR conditions are expected after sunset, likely to
persist through the remainder of the forecast period tomorrow.

&&

.MARINE...
(Tonight through next Tuesday)
Issued at 220 AM PDT Thu Jun 6 2024

Expect breezy northerly winds to persist through the day before
gradually easing into Friday. These winds along with rough seas
will lead to hazardous conditions for small craft. A moderate
period Northwest swell will continue impact the coastal waters
but will diminish Friday through Saturday before waves build
again towards the end of the period.

&&

.BEACHES...
Issued at 222 AM PDT Thu Jun 6 2024

A Beach Hazards Statement is in effect through Thursday evening.

Forecast remains on track. Moderate period swell is entering the
coastal waters at 14-17 seconds with heights varying 7-11 feet.
The would generate breaking waves of 8-15 feet with locally
higher waves at favored break points. Sneaker waves can run over
100 ft up a dry beach, pulling people in the water from rocks,
jetties, and beaches. Inexperienced swimmers should stay out of
the water. Observe the ocean for 20 minutes before relaxing on the
beach. The hot weather inland will lead to more people visiting
the beach this week. Know where lifeguards are, obey their
instructions, and never turn your back on the ocean!

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement until midnight PDT tonight for CAZ006-
     505-509-530.

     Heat Advisory until midnight PDT tonight for CAZ503-504-506-510-
     512>516-518.

PZ...Small Craft Advisory until 3 AM PDT Friday for Pt Arena to Pt
     Reyes 0-10 nm.

     Small Craft Advisory until 9 PM PDT this evening for Pigeon Pt
     to Pt Pinos 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm.

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

&&

$$

SHORT TERM...Behringer
LONG TERM....Behringer
AVIATION...JM
MARINE...Behringer

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