Piedmont, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

896
FXUS66 KMTR 141910
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
1210 PM PDT Sun Jun 14 2026

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

.KEY MESSAGES...
Updated at 1206 PM PDT Sun Jun 14 2026

 - Minor coastal flooding due to higher than normal high tides
   anticipated across low-lying coastal areas.

 - Hazardous beach conditions through Tuesday with increased risk
   of sneaker waves and strong rip currents.

 - Minor to locally Moderate HeatRisk through the middle of the
   week with seasonable June temperatures.

&&

.SHORT TERM...
Issued at 1206 PM PDT Sun Jun 14 2026
(This evening through Monday)

Visible satellite imagery shows that the majority of the marine
stratus and fog has retreated back to the coast as of early this
afternoon. SPC RAP analysis shows a weak shortwave trough
encompassing most of CA centered over the Bay Area. The influence of
this trough will allow for several degrees of cooling from yesterday
across the interior locations. As a result, HeatRisk will also be
decreasing, with more widespread Minor HeatRisk throughout the Bay
Area and Central Coast, with some localized areas of Moderate
HeatRisk reserved for the Central Valley and East/South Bay
locations.

The aforementioned shortwave trough will quickly advect eastward
overnight tonight with a ridge building in the Eastern Pacific. As
the ridge builds and influences our region, temperatures will
warm a few degrees tomorrow. But, HeatRisk will remain widespread
Minor with localized areas of Moderate HeatRisk across the region
on Monday. The marine layer is expected to be around 1500 feet
again overnight tonight/tomorrow morning (similar to last
night/this morning). Therefore the marine stratus and fog is
expected to behave similar to that of last night/this morning.

High tide coastal flooding will continue to occur nightly along the
low-lying areas of the Bayshore and the Pacific Coast through the
middle of the week. Tide levels are forecast to rise up to 2.0 feet
above normal into the middle of the week. This increase is driven by
multiple contributing factors, including Sunday`s new moon and lunar
perigee, ~ 7 inches of tidal anomaly from storm surge and thermal
expansion in the Eastern Pacific, and ~ 2 inches of sea level rise
since vertical datums were established in the 1980s/1990s. While
lower than the historic tidal flooding in January (which peaked at
2.6 ft), these tides could end up being the highest observed in the
summer, beating the current record of 1.7 ft from July 2022.

&&

.LONG TERM...
Issued at 1206 PM PDT Sun Jun 14 2026
(Tuesday through Saturday)

The Eastern Pacific ridge will strengthen slightly, maxing out on
Tuesday. This will allow for temperatures to warm another degree or
two on Tuesday, but HeatRisk will remain largely unchanged (with
widespread Minor to locally Moderate HeatRisk). Another pattern
change is anticipated as we head into the latter half of the week as
the ridge breaks down and a closed low forms off the coast of
northern California. This low is expected to become an open wave by
the end of the workweek, with the base of the trough moving through
our area this weekend. The low pressure system will bring cooler
temperatures to the region. As a result, HeatRisk will become
widespread Minor with localized areas of little to no risk as early
as Thursday. The ordinary marine stratus is expected to continue to
blanket the usual spots through the majority of the week.

&&

.AVIATION...
(18Z TAFS)
Issued at 1100 AM PDT Sun Jun 14 2026

Widespread coastal stratus begins to mix out increasing
conditions to IFR- MVFR. Winds are generally less than 12 kts
from the west to northwest. Afternoon breezes will increase to 12
to 15 kts, especially for the interior valley and eastern
terminals.

Vicinity of SFO...Coastal stratus has conditions at MVFR to IFR
nearby. Stratus will continue to mix out becoming clear by 19Z
redeveloping this afternoon around 06Z. Winds from the west
northwest at 5 to 15 kts.

SFO Bridge Approach...Similar to SFO.

Vicinity of SJC and OAK...VFR to MVFR conditions at KSJC as the
stratus has moved out of the area. MVFR to IFR conditions, but
improving, at KOAK. Conditions will continue to improve at KSJC
and KOAK becoming sky clear by 19Z. Stratus will lessen
conditions to IFR at OAK around 5Z and 11Z at KSJC. Winds from
the west northwest at 5 to 15 kts.

Monterey Bay Terminals... IFR conditions near KMRY will continue
to improve becoming MVFR around 19Z. Conditions at KSNS are MVFR
continue to improve becoming sky clear by 19Z. Stratus will return
this evening around 04Z. Winds from the west northwest at 5 to 15
kts.

&&

.MARINE...
(Today through Friday)
Issued at 846 AM PDT Sun Jun 14 2026

Expect continued southerly breezes and moderate seas with a low
south- southwesterly swell persist across most of the coastal
waters. Winds will remain fairly consistent to Monday as the seas
subside. Fresh to strong north winds will develop in the northern
outer waters towards the middle of the week.

&&

.BEACHES...
Issued at 1230 PM PDT Sat Jun 13 2026

Long period southerly swell will continue through the weekend,
especially for south and southwest facing beaches. Hazardous beach
conditions are advertised, specifically for moderate to steeply
sloped beaches along the Pacific Coast of the North Bay, San Mateo,
Santa Cruz counties. A Beach Hazards Statement is in effect for
Pacific coast beaches along the central coast and the Bay Area
coast from late tonight through late Tuesday night. Be sure check
beach conditions before you head out. Sneaker waves will run up
the beach much farther than other waves, potentially catching
beachgoers by surprise and resulting in people being swept into
the water. Rip currents are strong enough to pull the strongest
swimmers away from shore. Swim near a lifeguard if possible. Stay
back from the beach, and away from jetties, piers, beachside
rocks, and other infrastructure near the water. Never turn your
back to the ocean!

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Coastal Flood Advisory until 3 AM PDT Wednesday for CAZ006-506-
     508.

     Beach Hazards Statement through late Tuesday night for CAZ006-
     505-509-529-530.

     Coastal Flood Advisory until 3 AM PDT Tuesday for CAZ505-509-529-
     530.

PZ...None.
&&

$$

SHORT TERM...Berislavich
LONG TERM....Berislavich
AVIATION...Malarkey
MARINE...Malarkey

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