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whus46 kmtr 200515
cfwmtr
897
urgent - immediate broadcast requested
coastal hazard message
national weather service san francisco bay area
915 pm pst fri dec 19 2014
...large surf expected north bay coast friday and saturday...
.large northwest swell will impact the coast overnight through
saturday afternoon. the large swell will gradually decay saturday
afternoon into saturday night. large surf combined with increasing
high tide may result in some minor coastal flooding saturday
morning. locations of concern will be along the immediate coast
including sloughs and coastal marshes. king tide will begin to
occur on sunday lasting through tuesday. these high seasonal tides
will spread the coastal flooding concern into bay front areas in the
san francisco bay area.
caz505-509-529-530-201315-
/o.new.kmtr.cf.y.0002.141220t1700z-141220t2200z/
/o.con.kmtr.su.y.0007.000000t0000z-141220t2300z/
coastal north bay...including point reyes national seashore-
san francisco peninsula coast-northern monterey bay-
southern monterey bay and big sur coast-
915 pm pst fri dec 19 2014
...high surf advisory remains in effect until 3 pm pst saturday...
...coastal flood advisory in effect from 9 am to 2 pm pst
saturday...
the national weather service in the san francisco bay area has
issued a coastal flood advisory...which is in effect from 9 am to
2 pm pst saturday.
* coastal flooding...coastal flooding will be a concern along the
immediate coast including coastal marshes and sloughs.
* 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.
&&
$$
whus46 kmtr 200515
cfwmtr
caz506-508-201315-
/o.new.kmtr.cf.y.0003.141221t1700z-141223t0400z/
north bay interior valleys-san francisco bay shoreline-
915 pm pst fri dec 19 2014
...coastal flood advisory in effect from 9 am sunday to 8 pm pst
monday...
the sun...moon and the earth are coming into proper alignment to
encourage the largest tidal cycles of the season which is expected
to occur over the next few days. these extreme tides often refereed
to as king tides will result in coastal flooding of low lying
areas along our coast line and bay fronts during periods of high
tide. the locations that are typically dry during high tide may
become submerged due to this extreme tidal cycle. during periods
of extreme low tide expect to see tide pools develop along the
immediate coast.
the national weather service in the san francisco bay area has
issued a coastal flood advisory...which is in effect from 9 am
sunday to 8 pm pst monday.
* timing...generally speaking...extreme high tides are expected
to occur during the mid to late morning hours of december
21st...22nd and 23rd. extreme low tide will occur during the
late afternoon to late evening hours. the exact timing of tides
is location dependent so please visit
tidesandcurrents.noaa.gov/ports/...for more specific tidal
information.
* locations...low lying areas along the immediate coast and bay
front including marshes and sloughs. these locations may include
parking lots...coastal trails...sidewalks...underpasses and
roadways.
* impacts...sea water on roadways...parking lots...trails and
sidewalks. people visiting beaches may lose entry and exit to
coves and narrow beaches.
precautionary/preparedness actions...
a coastal flood advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore. do
not leave your vehicle in low lying parking lots near the coast or
bay front. do not travel through flooded roadways. if visiting the
coast avoid narrow beaches and coves.
&&
$$
whus46 kmtr 192356
cfwmtr
caz505-201530-
/o.con.kmtr.su.y.0007.000000t0000z-141220t2300z/
coastal north bay...including point reyes national seashore-
356 pm pst fri dec 19 2014
...high surf advisory remains in effect until 3 pm pst saturday...
* 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.
&&
$$

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