... High surf advisory now in effect until 10 am PST Tuesday for
the South Washington coast...
... Coastal Flood Advisory now in effect until noon PST Tuesday for
minor tidal overflow along low lying sections of the South
Washington coast...
The high surf advisory is now in effect until 10 am PST Tuesday.
The coastal Flood Advisory is now in effect until noon PST
Tuesday.
A series of waves from a strong Pacific storm system will
generate large seas and high winds through early Tuesday along the
South Washington coast. Meanwhile... published astronomical tides
will be near their monthly maximum due to the new moon. The
published tide for Toke Point Washington is expected to peak at
10.4 feet today at noon... at 8.1 feet on Tuesday at 2 am... and at
10.1 feet at 1 PM on Tuesday. Storm surge associated with the
large developing offshore low pressure system will likely be in
the 1 to 3 foot range tonight and Tuesday. Meanwhile... locally
heavy rain from the Willapa Hills will be channeling into Willapa
Bay... further raising the water level in the Bay.
As a result... minor tidal overflow is expected to occur along low
lying portions of the South Washington coast through Tuesday. The
greatest possibility of tidal overflow will be during the high
tides around noon today and 1 PM on Tuesday. The greatest
possibility of tidal overflow will be in and around the city of
Raymond... where similar circumstances caused minor flooding in
January of 2004.
During the storm... seas will climb to 23 to 27 feet with periods
around 11 seconds. These large seas will make for dangerous beach
conditions with waves pummeling the surf zone which will only be
exacerbated by the prominence of the enhanced lunar tidal cycle.
Seas have already reached 23 feet this morning off the mouth of
the Columbia River... and will likely peak closer to the value of
27 ft tonight during the period of the strongest winds. Due to the
magnitude of the high tides waves will travel much further up the
beach than usual creating a dangerous situation in which extreme
caution must be exercised. Large logs and other debris can easily
be tossed around by the force of these waves... even the largest
logs can roll easily on gently sloped beaches in ankle deep water.
Precautionary/preparedness actions...
A coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.
A high surf advisory means that high surf will affect beaches in
the advisory area... producing rip currents and localized beach
erosion.