* WHAT…Westerly swell 7 feet with swell periods 16 seconds with
occasional breakers to 12 feet except swell periods up to 20
seconds resulting in breakers near 14 feet Friday night and
Saturday morning. Westerly swell then increasing to 10 to 11
feet with swell periods 17 seconds resulting in breakers up to
19 feet from Saturday morning through Monday evening.
* WHERE…San Francisco, Coastal North Bay Including Point Reyes
National Seashore, San Francisco Peninsula Coast and Southern
Monterey Bay and Big Sur Coast Counties.
* WHEN…For the Beach Hazards Statement, from Friday evening
through Saturday morning. For the High Surf Advisory, from 9
AM Saturday to 9 PM PST Monday.
* IMPACTS…Dangerous swimming and surfing conditions and
localized beach erosion. Sneaker waves can unexpectedly run
significantly farther up the beach than normal, including over
rocks and jetties. These waves can suddenly knock people off
their feet and quickly pull them into the cold ocean waters,
where currents will be stronger than normal. These waves can
also carry driftwood logs and other debris.