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National Weather Service:
High Surf Advisory, Coastal Flood Advisory

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Current Conditions
Updated: 7:56 AM PST on December 20, 2014
Overcast San Francisco: 57°
Overcast
Wind: Calm
Dew Point: 57 °F
Pressure: 30.17 in
Humidity: 100%
Visibility: 5.0 miles

Weather content provided by Weather Underground. The Bay Area source for weather.
 
5-Day Weather Forecast for ZIP Code 94110
Sat Sun Mon Tue Wed
Chance of Rain Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy
Chance of Rain Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy
63° | 57° 63° | 55° 64° | 54° 64° | 52° 61° | 52°

Forecast as of 7:00 AM PST on December 20, 2014

High surf advisory in effect until 3 PM PST this afternoon... High surf advisory in effect until 3 PM PST this afternoon...
Saturday
Overcast with a chance of rain. High of 63F. Winds less than 5 mph. Chance of rain 20%.
Saturday Night
Overcast with a chance of rain. Low of 57F. Winds from the South at 5 to 10 mph. Chance of rain 20%.
Sunday
Overcast. High of 63F. Winds from the SSW at 5 to 10 mph shifting to the WNW in the afternoon.
Sunday Night
Mostly cloudy. Low of 55F. Winds from the WNW at 5 to 10 mph.
Monday
Overcast in the morning, then partly cloudy. Fog early. High of 64F. Winds from the NW at 5 to 10 mph.
Monday Night
Clear. Low of 54F. Winds from the North at 5 to 15 mph.
Tuesday
Partly cloudy in the morning, then clear. High of 64F. Winds less than 5 mph.
Tuesday Night
Partly cloudy. Low of 52F. Winds less than 5 mph.
Wednesday
Mostly cloudy. High of 61F. Winds less than 5 mph.
Wednesday Night
Mostly cloudy. Low of 52F. Winds from the NW at 5 to 10 mph.
Thursday
Mostly cloudy. Fog early. High of 64F. Winds from the North at 5 to 10 mph.
Thursday Night
Partly cloudy. Low of 48F. Winds from the NE at 5 to 10 mph.
Friday
Partly cloudy. High of 61F. Winds from the NE at 5 to 15 mph.
Friday Night
Partly cloudy. Low of 46F. Winds from the ENE at 5 to 10 mph.
Saturday
Partly cloudy. High of 59F. Winds from the ENE at 5 to 10 mph.
Saturday Night
Partly cloudy. Low of 52F. Winds less than 5 mph.
Sunday
Mostly cloudy. High of 63F. Winds less than 5 mph.
Sunday Night
Partly cloudy. Low of 46F. Winds less than 5 mph.
Monday
Partly cloudy. High of 57F. Winds less than 5 mph.
Monday Night
Partly cloudy. Low of 46F. Winds from the ENE at 5 to 10 mph.
Tuesday
Clear. High of 57F. Winds from the East at 5 to 10 mph.
Tuesday Night
Clear. Low of 46F. Winds from the East at 5 to 10 mph.
 
Air Pollution Forecast for San Francisco
  Air Quality AQ Index Pollutant
YesterdayGoodPM2.5
YesterdayGoodOZONE
CurrentModeratePM2.5
CurrentGoodOZONE
SatModerate PM2.5
SunModerate PM2.5
MonModerate PM2.5
TueModerate PM2.5
WedModerate PM2.5
Astronomy
Sunrise:07:20 AM (PST) Moon Rise:05:44 AM (PST)
Sunset:04:53 PM (PST) Moon Set:04:08 PM (PST)
Moon Phase
Dec. 20 Dec. 21 Dec. 28 Jan. 04 Jan. 13
High Surf Advisory, Coastal Flood Advisory
Statement as of 6:28 am PST on December 20, 2014

... High surf advisory remains in effect until 3 PM PST this
afternoon...
... Coastal Flood Advisory remains in effect from 9 am Sunday to
8 PM PST Monday...

* coastal flooding... coastal flooding is not initially expected
to be an issue for San Francisco on Saturday. However...
coastal flooding will become an issue Sunday morning as the
first King tide impacts the area.

* Waves and surf... northwest swell of 15 to 18 feet with a
period of 18 seconds. Occasional breakers over 25 feet will be
possible.

* Timing... Friday evening through Saturday afternoon.

* Impacts... large breaking waves along the coast will likely
produce hazardous conditions on the beach and surf zone...
especially northwest facing beaches. There will also be an
increased likelihood for dangerous rip currents and beach
erosion.

Precautionary/preparedness actions...

It is extremely dangerous to fish or observe waves from exposed
coastal structures or rocks during high surf conditions. Very
large waves can suddenly sweep across previously dry areas.
Swimming or surfing in these waves may be dangerous for anyone.

A high surf advisory means that high surf will affect beaches in
the advisory area... producing rip currents and localized beach
erosion.

A coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.






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