000
FXUS66 KMTR 221745
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco Bay Area
1045 AM PDT Mon Oct 22 2018

.SYNOPSIS...Slightly cooler temperatures are forecast across the
region through midweek as an upper level system pushes inland over
the Pacific Northwest and northern California. High pressure then
builds over the region late week and allows for temperatures to warm
to above seasonal averages. Dry weather conditions are also likely
to prevail through the forecast period.

&&

.DISCUSSION...as of 07:28 AM PDT Monday...Despite the calendar
saying it`s fall the satellite shows cloud cover this morning that
resembles more like summer. Widespread low clouds cover the entire
coast and much of the inland valleys. Fort Ord profiler puts this
depth at about 1,500 feet. Patchy fog is also being reported at a
few automated stations, but unlike the last two mornings dense fog
is not being reported. The deep marine layer is due to an upper
level low passing over the state. Latest hi-res models keep the
low clouds through mid-late morning. Do expect sunny skies this
afternoon, but temperatures will remain on the cooler side and a
few degrees below normal. Highs will be in the 60s coast and 70s
to lower 80s inland.

No update is planned at this time.

&&

.PREV DISCUSSION...as of 04:01 AM PDT Monday...Temperatures this
afternoon are likely to cool only slightly across the interior as
an upper level short-wave pushes inland to our north. While
onshore flow will increase slightly, the marine layer should mix
out some and allow for afternoon clearing. Little day-to- day
change is expected Tuesday into Wednesday as well with periods of
late night and early morning low clouds with the presence of a
weak marine layer and continued onshore flow. Overnight cloud
cover will be less widespread however as the weak upper level
disturbances pushing inland to our north keep the marine layer a
bit more mixed through midweek.

Conditions are forecast to warm late in the week as high pressure
builds over the region and keeps the storm track to our north. The
latest medium range models maintain dry weather conditions over our
region through late week and potentially into next weekend as well.
May even see brief offshore flow develop across the interior which
will result in temperatures warming to near or above seasonal
averages Friday and Saturday. May see a bit of a cool down heading
into early next week as another mid/upper level trough approaches
the Pacific Northwest and northern California. However, the current
thinking is that any precipitation will again remain to our north.

&&

.AVIATION...as of 10:45 AM PDT Monday...for 18Z TAFs. Profiler
data and pilot reports indicate a fairly deep marine layer with
bases around 1000 feet and cloud tops around 2000 feet. Onshore
flow is in place and expect a fairly slow burn off through 19z for
most terminals. Expect stratus to spread back inland overnight
with similar synoptic pattern in place.


Vicinity of KSFO....Stratus forecast system and current trends
expect clearing shortly after 19z. Light westerly seabreeze this
afternoon with cigs returning after 06z.

SFO Bridge Approach...Approach clearing around 1930z then
remaining clear through evening rush.

Monterey Bay Terminals...Low clouds will slowly pull back by
20-21z for kmry then return around 02z this evening, staying in
place at least through 18z Tuesday.

&&

.MARINE...as of 8:00 AM PDT Monday...Light northwest winds are
forecast to prevail over the waters through the day with locally
breezy conditions along the Big Sur coast this afternoon and
evening. Generally light wind and seas will continue through
midweek. Northwest wind and seas will increase by Thursday or
Friday as a front approaches the far northern waters.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .Tday...SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm from 3 PM

&&

$$

PUBLIC FORECAST: MM
AVIATION: RWW
MARINE: RWW

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NWS MTR Office Area Forecast Discussion

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print "<p>High Precipatation<br/><br/>$usaprecip</p>\n";
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USA Extremes for Sunday, October 21, 2018

High Temperature

94°F at North Perry Arpt Asos, FL
94°F at Thermal, CA

Low Temperature

7°F at Mount Washington, NH

High Precipatation

0.46in at Chatham, MA

Data courtsey of NWS-CPC

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