Wind Advisory 5, NWS San Francisco Bay Area, CA

484 
WWUS76 KMTR 172006
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco CA
106 PM PDT Sun May 17 2026

CAZ504-512-514-515-180500-
/O.CON.KMTR.WI.Y.0005.260518T0600Z-260518T1800Z/
North Bay Interior Mountains-Santa Cruz Mountains-Eastern Santa
Clara Hills-East Bay Hills-
106 PM PDT Sun May 17 2026

...WIND ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM
PDT MONDAY...

* WHAT...North to northeast winds 15 to 30 mph with gusts up to 50
  mph expected. Local gusts up to 60 mph.

* WHERE...The Santa Cruz Mountains, North Bay Interior Mountains,
  Eastern Santa Clara Hills, and East Bay Hills.

* WHEN...From 11 PM this evening to 11 AM PDT Monday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.

&&

$$

Kennedy

598 
WWUS76 KMTR 180424
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco CA
924 PM PDT Sun May 17 2026

CAZ504-512-514-515-181800-
/O.CON.KMTR.WI.Y.0005.260518T0600Z-260518T1800Z/
North Bay Interior Mountains-Santa Cruz Mountains-Eastern Santa
Clara Hills-East Bay Hills-
924 PM PDT Sun May 17 2026

...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT MONDAY...

* WHAT...North to northeast winds 15 to 30 mph with gusts up to 50
  mph expected. Local gusts up to 60 mph.

* WHERE...The Santa Cruz Mountains, North Bay Interior Mountains,
  Eastern Santa Clara Hills, and East Bay Hills.

* WHEN...Until 11 AM PDT Monday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.

&&

$$

KR

089 
WWUS76 KMTR 181754
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco CA
1054 AM PDT Mon May 18 2026

CAZ504-512-514-515-181900-
/O.EXP.KMTR.WI.Y.0005.000000T0000Z-260518T1800Z/
North Bay Interior Mountains-Santa Cruz Mountains-Eastern Santa
Clara Hills-East Bay Hills-
1054 AM PDT Mon May 18 2026

...WIND ADVISORY WILL EXPIRE AT 11 AM PDT THIS MORNING...

Wind gusts have fallen below Advisory criteria. Therefore, the Wind
Advisory will be allowed to expire. Breezy and gusty winds will
continue across the higher elevations for the next couple of hours.

$$

DialH

Area Forecast Discussion
National Weather Service San Francisco CA
925 PM PDT Sat May 16 2026

...New AVIATION, MARINE...

.KEY MESSAGES...
Updated at 115 PM PDT Sat May 16 2026

 - Breezy to windy conditions, especially along the immediate
   coast, will result in hazardous beach conditions through Monday

 - Hazardous marine conditions expected through the weekend

 - Elevated fire weather concerns continue through Monday across
   the interior with low humidities and strong gusts

&&

.UPDATE...
Issued at 920 PM PDT Sat May 16 2026

Water vapor imagery shows a broad trough of low pressure over the
West this evening, with another disturbance digging into the Great
Basin this evening. As a result, pressure gradients strengthened
once again this afternoon. The SFO-ACV gradient peaked at -10.8
mbs, while the SFO-LAS gradient peaked at 15.7. Meanwhile, several
coastal sites have been gusting between 45 and 55 mph this
afternoon and evening, with the strongest gust up to this point
at Point Reyes peaking with 61 mph. Therefore, the Wind Advisory
looks like it is verifying well, especially for coastal Marin and
San Mateo Counties. The Big Sur Coast has also been gusting in the
40s mph range, with Coast Road peaking at 48 mph. For now, plan to
let the Wind Advisory ride, even though it seems like the higher gusts
are becoming less frequent than earlier. Not to leave out the
coastal waters, the Bodega Bay Buoy has been steadily gusting
around 50 mph and the San Francisco Buoy has been gusting around
45 mph. The Monterey Buoy has also be gusting around 40 mph.
Needless to say, it hasn't been a pleasant day to be out on our
waters.

The winds will remain the primary concern of the short term
though, as the gradient goes from onshore tonight to more
offshore Sunday into Monday, as another disturbance digs into the
Great Basin. Will need to look closely to see if we need another
Wind Advisory for the North and East Bay Mountains. Otherwise,
expect one more relatively cool day across the region tomorrow,
with a warming trend expected for the first part of the work week.
Palmer

&&

.SHORT TERM...
Issued at 115 PM PDT Sat May 16 2026
(This evening through Sunday)

Low pressure along the British Columbia coastline early this
afternoon will push into the Intermountain West throughout the
evening and into the overnight. This will tighten the pressure
gradient across the San Francisco Bay Area and Central Coast.
Thus, expecting the strongest winds to be along the coast and in
the higher terrain across the region. Therefore, a Wind Advisory
remains in effect through 5 AM Sunday morning along the coast
excluding the Santa Cruz region for northwesterly winds of 20-30
mph with gusts as strong as 55 mph (especially along the immediate
coast and in the higher terrain).

For Sunday, expecting another disturbance rotate through the
large scale trough and dig into the Great Basin once again. This
will maintain a moderate to strong pressure gradient across the
region with winds becoming offshore (northerly or northeasterly)
in the higher terrain. Forecast temperatures for Sunday will be
similar to or slightly warmer than today.

&&

.LONG TERM...
Issued at 115 PM PDT Sat May 16 2026
(Sunday night through next Friday)

A broad trough will remain over the Intermountain West through
the early part of the workweek, yet is forecast to shift farther
to the east. This will weaken the pressure gradient from much of
the Bay Area and Central Coast by Monday night and into Tuesday.
The one caveat, how deep will the marine layer be heading into
early week. Temperatures have the potential to be 10 degrees F
cooler along the coast and into the adjacent coastal valleys where
low clouds (if they develop) will be slow to dissipate.

By midweek, high pressure will begin to build in from the eastern
Pacific leading to an inland warming trend. Meanwhile, as the
marine layer is likely to deepen during this timeframe, cooler
conditions will prevail near the coast and their adjacent valley
locations. By the end of the week, ensembles are hinting at
another trough approaching the West Coast and cooling temperatures
regionwide. However, less confidence in the extended.

&&

.AVIATION...
(06Z TAFS)
Issued at 924 PM PDT Sat May 16 2026

Currently VFR at all terminals with the exception of some haze being
observed at HAF and SNS. High confidence in VFR through the TAF
period; however, haze will reduce slant range visibilities. Strong
and gusty onshore winds will relatively diminish overnight before
veering and strengthening towards the end of the TAF period.

Vicinity of SFO...Currently VFR with gusty westerly flow. High
confidence in VFR through the TAF period. Strong and gusty westerly
winds with gusts up to 35 knots are expected through 07Z. Winds will
veer tomorrow to become northwesterly by the afternoon and
northerly by late tomorrow night with gusts up to 30 knots expected.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Currently MVFR with southerly flow at MRY
and MVFR with gusty southwesterly flow at SNS. Both terminals are
observing OVC020; however, a look outside the office which is
located adjacent to MRY shows VFR. The ceilometer is likely
observing the inversion with lofted sea spray trapped beneath it.
Aside from that, high confidence in VFR through the TAF period.
Gusty onshore winds are expected through the TAF period.

&&

.MARINE...
(Tonight through next Friday)
Issued at 924 PM PDT Sat May 16 2026

Widespread hazardous conditions are expected to continue through
the weekend. Near gale force to gale force northerly breezes with
widespread severe gale force gusts are expected through the
weekend. Storm force gusts are expected across the northern outer
waters and along the coastal jet region of Big Sur through
tonight. Rough to very rough seas have built as a result.
Conditions will slowly begin to improve Monday.

&&

.FIRE WEATHER...
Issued at 115 PM PDT Sat May 16 2026

Strong and gusty north to northwest winds continue to build through
Saturday before becoming north to northeast by Sunday in the higher
terrain. Expect peak gusts greater than 30 mph for most areas, with
around 45 to 55 mph along the coast, through gaps and passes, and
across the ridgelines. Daytime humidity retention will fall to 10-
25% across the interior regions and higher peaks, with limited
overnight humidity recoveries. Strong winds persist into the early
part of Monday before diminishing, but humidities will be slow to
recover as a modest offshore flow continues into the early part of
the week.

RGass

&&

.BEACHES...
Issued at 140 AM PDT Sat May 16 2026

A Beach Hazards Statement remains in effect for west facing
beaches along the Pacific Coast through 9 AM Monday due to strong
winds over the marine environment leading to hazardously strong
wind waves and overall rough seas. Dangerous swimming, boating,
and surfing conditions can be expected. Large breaking waves can
overpower swimmers resulting in significant physical injury and
increase the risk of drowning. Gusts will stay strong along the
immediate coast, causing blowing and drifting sand and increased
sea spray. Water rescue attempts may be hampered by reduced
visibilities from the sea spray. Remember, NEVER turn your back on
the ocean.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Beach Hazards Statement through Monday morning for CAZ006-505-
     509-530.

     Wind Advisory until 5 AM PDT Sunday for CAZ006-505-509-530.

     Coastal Flood Advisory until 3 AM PDT Tuesday for CAZ506.

PZ...Small Craft Advisory until 3 AM PDT Sunday for SF Bay N of Bay
     Bridge.

     Gale Warning from 3 AM to 9 PM PDT Sunday for Pt Pinos to Pt
     Piedras Blancas 0-10 nm-SF Bay N of Bay Bridge.

     Gale Warning until 9 PM PDT Sunday for Mry Bay-Pigeon Pt to Pt
     Pinos 0-10 nm-Pt Arena to Pt Reyes 0-10 nm-Pt Reyes to
     Pigeon Pt 0-10 nm.

     Storm Warning until 3 AM PDT Sunday for Pt Arena to Pt Reyes 10-
     60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm.

     Gale Warning from 3 AM Sunday to 3 AM PDT Monday for Pt Arena to
     Pt Reyes 10-60 NM.

     Gale Warning until 3 AM PDT Monday for Pigeon Pt to Pt Pinos 10-
     60 NM.

&&

SHORT TERM...RGass
LONG TERM....RGass
AVIATION...Sarment
MARINE...Sarment

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