Small Craft Advisory 90, NWS San Francisco Bay Area, CA

220 
WHUS76 KMTR 131537
MWWMTR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
837 AM PDT SAT MAY 13 2017


PZZ535-132345-
/O.CON.KMTR.SC.Y.0088.170513T1600Z-170514T0400Z/
/O.CAN.KMTR.SC.Y.0090.170514T1900Z-170515T0400Z/
MONTEREY BAY-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS 
EVENING. 

* WINDS: NW WINDS 15 TO 25 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ570-132345-
/O.CON.KMTR.SC.Y.0089.000000T0000Z-170515T0100Z/
WATERS FROM POINT ARENA TO POINT REYES 10-60 NM-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY. 

* WINDS: NW WINDS 10 TO 20 KT.

* WAVES: NW SWELL 9 TO 10 FT AT 11 SECONDS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ571-132345-
/O.CON.KMTR.SC.Y.0088.000000T0000Z-170515T0100Z/
WATERS FROM POINT REYES TO PIGEON POINT 10-60 NM-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY. 

* WINDS: NW WINDS 15 TO 25 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ575-132345-
/O.CON.KMTR.SC.Y.0088.000000T0000Z-170515T0100Z/
WATERS FROM PIGEON POINT TO POINT PINOS 10-60 NM-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY. 

* WINDS: NW WINDS 15 TO 25 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ576-132345-
/O.CON.KMTR.SC.Y.0088.000000T0000Z-170515T0100Z/
WATERS FROM POINT PINOS TO POINT PIEDRAS BLANCAS 10-60 NM-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY. 

* WINDS: NW WINDS 20 TO 30 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ540-132345-
/O.CON.KMTR.SC.Y.0088.000000T0000Z-170515T0100Z/
COASTAL WATERS FROM POINT ARENA TO POINT REYES CALIFORNIA OUT TO
10 NM-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY. 

* WINDS: NW WINDS 15 TO 25 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ545-132345-
/O.CON.KMTR.SC.Y.0088.000000T0000Z-170515T0100Z/
COASTAL WATERS FROM POINT REYES TO PIGEON POINT CALIFORNIA OUT TO
10 NM-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY. 

* WINDS: NW WINDS 15 TO 25 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ560-132345-
/O.CON.KMTR.SC.Y.0088.000000T0000Z-170515T0100Z/
COASTAL WATERS FROM PIGEON POINT TO POINT PINOS CALIFORNIA OUT TO
10 NM-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY. 

* WINDS: NW WINDS 15 TO 25 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ565-132345-
/O.CON.KMTR.SC.Y.0088.000000T0000Z-170515T0100Z/
COASTAL WATERS FROM POINT PINOS TO POINT PIEDRAS BLANCAS
CALIFORNIA OUT TO 10 NM-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT SUNDAY. 

* WINDS: NW WINDS 20 TO 30 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ530-132345-
/O.CON.KMTR.SC.Y.0088.170513T2200Z-170514T0400Z/
SAN PABLO BAY, SUISUN BAY, THE WEST DELTA AND THE SAN FRANCISCO
BAY NORTH OF THE BAY BRIDGE-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 9 PM PDT THIS EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON
TO 9 PM PDT THIS EVENING. 

* WINDS: W WINDS 15 TO 25 KT.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

PZZ531-132345-
/O.CON.KMTR.SC.Y.0088.170513T2200Z-170514T0400Z/
SAN FRANCISCO BAY SOUTH OF THE BAY BRIDGE-
837 AM PDT SAT MAY 13 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 9 PM PDT THIS EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON
TO 9 PM PDT THIS EVENING. 

* WINDS: NW WINDS BECOMING W 15 TO 25 KT IN THE AFTERNOON.

* WAVES: SEE THE COASTAL WATERS FORECAST (CWFMTR) OR OUR MARINE 
  PAGE AT HTTP://WEATHER.GOV/SANFRANCISCO/MARINE.PHP FOR MORE 
  DETAILS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO

Area Forecast Discussion
National Weather Service San Francisco Bay Area
1046 PM PDT Fri May 12 2017

.SYNOPSIS...Cooler than normal temperatures along with breezy
onshore winds can be expected through early next week. Dry weather
is expected through the weekend, but there is a slight chance of
rain regionwide Late Monday into Tuesday as another system
approaches from the north. A warming trend is then expected late
in the forecast period as a result of building high pressure.

&&

.DISCUSSION...As of 9:00 PM PDT Friday...An unseasonably cool
upper level trough remains in place along the West Coast this
evening. The trough completely mixed out the marine layer
resulting in mostly sunny skies regionwide this afternoon. But
even with all that sun, afternoon highs were as much as 8 degrees
cooler than normal due to the cool airmass in place...along with
brisk onshore winds. Those brisk winds are the result of an
increasing surface pressure gradient between high pressure
offshore and deepening low pressure over the Desert Southwest. The
current SFO to Las Vegas pressure gradient is a robust 18 mb.
West to northwest winds have been gusting between 30 and 40 mph
across our region since late afternoon, with a peak gust of 45 mph
reported at San Francisco Airport. Latest model guidance shows
winds gradually subsiding late this evening and overnight, but
then increasing once again on Saturday afternoon. In fact, breezy
conditions are expected to continue on through the weekend,
although the overall trend will be towards slightly less windy
conditions. Temperatures will remain below normal through the
weekend. According to most models, dry conditions should prevail
across our forecast area through the weekend. However, rain
potential can't be completely ruled out as the GFS forecasts light
rain in the North Bay on Sunday afternoon as a shortwave trough
drops in from the northwest.

The upper trough position is forecast to shift slightly to the
east late Sunday and Monday, but a cold upper low is then
projected to swoop in from NNW early next week, bringing a
reinforcing shot of cold air into our region. In addition, most
models indicate this system will have sufficient moisture to
produce scattered showers across much of our forecast area from
late Monday night into Tuesday, especially across northern and
eastern portions of our area.

The longer range forecast models agree that the longwave trough
position will finally shift to our east around the middle of next
week and a ridge over the Eastern Pacific will build eastward
into California later in the week, bringing a warming trend to our
region. But the transition period between cool and possibly wet
weather on Tuesday and warmer and drier conditions late in the
week will likely be a breezy period of time, with gusty northwest
winds expected from late Tuesday into Wednesday.

&&

.AVIATION...As of 10:45 PM PDT Friday...For 06z TAFs. VFR
conditions expected to prevail. Breezy west to northwest winds
have been slowly decreasing since sunset and will continue to do
so overnight. Winds are expected to increase again on Saturday
afternoon.

Vicinity of KSFO...VFR. Wind gusts over 35 kt earlier this evening
prompted the issuance of an Airport Weather Warning for the
terminal. Gusts have slowly decreased over the past few hours and
expect the trend to continue overnight. Breezy conditions will
return by Saturday afternoon with possible gusts around 30 kt.

SFO Bridge Approach...Similar to KSFO.

Monterey Bay Terminals...VFR conditions expected. Went ahead and
removed the tempo BKN clouds for KMRY and KSNS in the latest TAF
package based on observations and guidance. 00Z MTR WRF suggests
that any BKN/OVC low cloud development will remain south of KMRY.
Will monitor and amend if necessary. Breezy westerly winds will
return by Saturday afternoon.

&&

.MARINE...as of 10:28 PM PDT Friday...High pressure over the
eastern pacific will allow for strong northwesterly winds to
continue overnight into the weekend. The strong winds will result
in increasingly hazardous sea conditions.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .Tngt...SCA...Pt Arena to Pt Reyes 0-10 nm
             SCA...Pt Reyes to Pigeon Pt 0-10 nm
             SCA...Pigeon Pt to Pt Pinos 0-10 nm
             SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm
             SCA...Pigeon Pt to Pt Piedras Blancas 10-60 nm
             SCA...Pt Arena to Pigeon Pt 10-60 nm

&&

PUBLIC FORECAST: Dykema
AVIATION: Rowe
MARINE: Anna/Rowe

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