whus46 kmtr 211916
cfwmtr
789 

coastal hazard message
national weather service san francisco bay area
1216 pm pdt tue may 21 2019

...high surf advisory along the coast tonight into wednesday...

.a rapidly building northwest swell will arrive along the sonoma 
coast later this afternoon and then spread southward to monterey
county this evening and overnight. seas currently around 8 feet
will rapidly build to around 15 feet as a long period northwest
swell arrives. breaking waves to 20 feet in the surf zone will be
possible.

caz006-505-509-529-530-220500-
/o.new.kmtr.su.y.0003.190521t2200z-190523t0400z/
san francisco-
coastal north bay including point reyes national seashore-
san francisco peninsula coast-northern monterey bay-
southern monterey bay and big sur coast-
1216 pm pdt tue may 21 2019

...high surf advisory in effect until 9 pm pdt wednesday...

the national weather service in san francisco has issued a high
surf advisory, which is in effect until 9 pm pdt wednesday. 

* waves and surf...seas building rapidly from 14 to 16 feet with
  breaking waves to 20 feet possible in the surf zone.

* timing...3 pm tuesday through 9 pm wednesday.

* impacts...beach visitors, surfers, fisherman and others visiting
  the beaches should be prepared for rapidly building seas with
  dangerous crashing waves in the surf zone. sea surface
  temperatures in the mid 50s will cause hypothermia in a short
  amount of time. the surf zone has been relatively tranquil and
  this will be a quick change in surf conditions. beach and water
  related fatalities are common but preventable. dont become a
  statistic. 

precautionary/preparedness actions...

a high surf advisory means that high surf will affect beaches in
the advisory area, producing rip currents, localized beach
erosion and sneaker waves.

&&

$$