San Francisco Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

High Surf Warning
Issued: 4:28 AM PST Jan. 19, 2017 – National Weather Service

... High surf warning in effect from noon Friday to 4 PM PST
Saturday...

The National Weather Service in San Francisco has issued a high
surf warning... which is in effect from noon Friday to 4 PM PST
Saturday.

* Waves and surf... west swell increasing to 16 to 20 feet Friday
afternoon and as high as 24 to 28 feet Friday night and
Saturday. Swell period 14 to 15 seconds.

* Timing... Friday afternoon through Saturday

* impacts... large breaking waves... strong rip currents... and
sneaker waves.

Precautionary/preparedness actions...

A high surf warning indicates that dangerous... battering wave
will pound the shoreline. This will result in very dangerous
swimming conditions... and deadly rip currents.




Wind Advisory
Issued: 12:51 PM PST Jan. 19, 2017 – National Weather Service

... Wind Advisory in effect from 2 am to 10 am PST Friday...

The National Weather Service in San Francisco has issued a Wind
Advisory... which is in effect from 2 am to 10 am PST Friday.

* Timing... late tonight through Friday morning.

* Winds... southerly wind gusts from 40 to 50 mph.

* Impacts... downed trees... limbs and powerlines will be
possible. Driving of high profile vehicles will be impacted as
well.

Precautionary/preparedness actions...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult... especially for high
profile vehicles. Use extra caution.





Small Craft for Rough Bar Advisory, Small Craft Advisory, Gale Watch
Issued: 2:13 PM PST Jan. 19, 2017 – National Weather Service

... Small Craft Advisory for rough bar now in effect until 4 am
PST Saturday...
... Small Craft Advisory now in effect until 4 am PST Saturday...
... Gale watch remains in effect from Saturday evening through
Sunday morning...

* winds and 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 for rough bar means that wave conditions
are expected to be hazardous to small craft in or near Harbor
entrances.

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.

A gale watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased... but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.







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