Area Forecast Discussion
Issued by NWS San Francisco Bay Area, CA
FXUS66 KMTR 310402
Area Forecast Discussion
National Weather Service San Francisco Bay Area
902 PM PDT MON MAY 30 2016
.SYNOPSIS...A warming trend is forecast through late week as high
pressure builds along the California coast. Inland temperatures will
warm into the 80s to 90s by mid to late week while coastal locations
.DISCUSSION...as of 9:00 PM PDT Monday...Upper level high over the
area brought very warm temperatures to the inland areas today.
Highs today in the interior were 8 to 12 degrees warmer than
yesterday. Coastal areas remained cool as a compressed marine
layer kept low clouds and an onshore flow going. We are seeing
reduced visibilities as a result of the compressed marine layer
with HMB airport reporting 1/4 mile.
The high will shift slowly eastward during the week. Temperatures
through the end of the week will be a few degrees warmer in all
areas as 850 mb temperatures continue to warm. There is no
offshore flow so coastal areas will remain under a marine
influence. However coastal areas should still warm slightly as
low clouds and fog are shallower and burn off earlier in the day.
From previous discussion...The medium range models show the
possibility of a closed mid/upper level low approaching and moving
across the region late in the upcoming weekend. Moisture will be
limited with this system and we do not anticipate widespread
precipitation at this time. However, will need to closely monitor
the forecast model solutions in the coming days with regards to
any chances of isolated convection associated with this system.
What the low will likely do is cool temperatures slightly by
Sunday and into early next week as the ridge shifts further
.AVIATION...as of 4:55 PM PDT Monday...For 00z tafs. Marine layer
is shallow so expect low cigs to return to kmry/ksns this evening
but take most of the night to reach koak and ksfo. Not expecting
cigs for klvk and ksts/ksjc. Light westerly seabreeze this
Vicinity of KSFO...vfr this evening with clear skies and west
winds around 15 kt. Given shallow marine layer not expecting any
cigs til late...around 11z or so and confidence is medium with
that. Any cigs should have an early burn off Tuesday given the
shallow marine layer and minimal inland intrusion expected.
SFO Bridge Approach...vfr this evening and overnight. Some low
cigs could inhibit visuals early Tuesday morning but expecting any
cigs to burn off by 16-17z.
Monterey Bay Terminals...vfr through 03z. Expect clouds over
Monterey bay to surge inland after 03z as the sun goes down
bringing 600 foot cigs over the terminals overnight through
around 16-17z Tuesday.
.MARINE...as of 3:00 PM PDT Monday...High pressure over the
eastern pacific will maintain northwesterly winds across the
coastal waters. A moderate short period northwest swell will
persist across the coastal waters as a longer period southerly
swell gradually builds through midweek.
.Tday...SCA...SF Bay until 9 PM
PUBLIC FORECAST: W Pi/R Gass
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