FXUS66 KMTR 300702
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
1202 AM PDT Sat May 30 2026
...New SHORT TERM, LONG TERM...
.KEY MESSAGES...
Updated at 1201 AM PDT Sat May 30 2026
- Temperatures return closer to normal today, then climb slightly
above normal for Sunday into beginning of next week
- Cooler than normal temperatures may return by end of next week
&&
.SHORT TERM...
Issued at 1201 AM PDT Sat May 30 2026
(Today and tonight)
Quiet weather with weak progressive ridging aloft overnight,
becoming primarily zonal through the day today will help lift
temperatures close to normal for this time of year. The marine layer
has returned and is well established for the remainder of the
overnight through mid-morning. Coastal areas should see the marine
layer lift by late morning with mostly sunny skies area wide for the
remainder of the afternoon and early evening. The marine layer will
once again fill back in later tonight.
&&
.LONG TERM...
Issued at 1201 AM PDT Sat May 30 2026
(Sunday through Friday)
The progressive and relatively weak longwave synoptic pattern across
our latitude will keep the weather quiet, temperatures similar on
a day-to-day basis Sunday through Thursday with slightly above
normal temperatures and breezy diurnal wind fluctuations with
onshore flow. Confidence continues to increase for a more
organized and deeper synoptic troughing pattern for the end of
next week and beyond. Although it appears any rain would be well
to our north attm, the pattern would keep temperatures below
seasonal averages.
&&
.AVIATION...
(06Z TAFS)
Issued at 937 PM PDT Fri May 29 2026
The low cloud coverage is evolving as expected as the marine layer
reforms under a building low amplitude ridge. It now looks more
likely that ceilings will reach the IFR threshold for many of the
terminals, and the 06Z TAFs have been adjusted in that direction.
Clear skies will dominate Saturday after the morning clouds clear.
Vicinity of SFO...Ceilings managed to hang around all day, and
the streak will continue through most of Saturday morning before
clearing around midday. Onshore winds will gradually increase
through the afternoon, with sustained winds greater than 20 knots
expected in the several hours surrounding 00Z.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...MVFR ceilings will likely drop to high IFR
in the next couple hours and stay there through the night as the
marine layer becomes more organized and compresses under the
building high pressure. There is a 100% chance for MVFR ceilings,
60% chance for IFR, and 15% chance for LIFR through the early
morning hours.
&&
.MARINE...
(Tonight through next Thursday)
Issued at 906 PM PDT Fri May 29 2026
Stronger high pressure to the north will result in moderate to
fresh northerly breezes tonight and into the weekend. The
strongest winds will be over the northern outer waters.
Occasional gale force gusts will occur the north of the Golden
Gate and along the Big Sur Coast. Increasing winds and building
seas will lead to hazardous conditions over the coastal waters
beginning tonight lasting into the weekend.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this
evening for Mry Bay.
Small Craft Advisory until 3 AM PDT Monday for Pigeon Pt to Pt
Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt
Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm.
Small Craft Advisory from 3 PM this afternoon to 3 AM PDT Sunday
for Pigeon Pt to Pt Pinos 0-10 nm-Pt Reyes to Pigeon Pt 0-
10 nm.
&&
$$
SHORT TERM...JM
LONG TERM....JM
AVIATION...Flynn
MARINE...Flynn
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Prepared by Boulder-Creek.com Weather at: Sat May 30 00:30:03 PDT 2026
From the National Weather Service
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