Weather

...KING TIDES WILL CAUSE MINOR COASTAL FLOODING AT LOW LYING
SPOTS DURING HIGH TIDE TODAY, SATURDAY, AND SUNDAY...

.The highest astronomical tides of the year, commonly referred to
as the King Tides, will again impact the coast today through the
weekend. King Tides occur when tidal forces maximize as the moon,
earth, and sun come into alignment while the moon is in perigee
(nearest to the earth) and the earth is at perihelion (nearest to
the sun). These tides will peak during the mid to late morning
and have historically resulted in the localized flooding of
specific low lying areas each year. In addition, the lowest low
tides of the season will follow hours later in the afternoons.
The King Tides tidal readings are expected to peak Saturday.

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST
SUNDAY...

* WHAT...Minor coastal flooding expected at prone low lying
coastal locations across the San Francisco Bay shoreline
during peak high tide today, Saturday, and Sunday mornings.

* WHERE...North Bay Interior Valleys, San Francisco Bay
Shoreline and San Francisco.

* WHEN...From 8 AM today to 3 PM PST Sunday. The highest high
tides are expected to occur during the mid to late mornings
while the lowest low tides will occur during the mid afternoon
to early evenings. Please refer to local tidal data forecasts
available for San Francisco, Redwood City, or Alameda at
www.tidesandcurrents.noaa.gov for more specific details.

* IMPACTS...Flooding of areas previously impacted by King Tide
events is expected, including low lying lots, parks, and roads
throughout the San Francisco Bay Shoreline with the highest
high tides. Difficulty navigating shallow bay waters during
the lowest low tides.

* ADDITIONAL DETAILS...Tide poolers and beachgoers should be
familiar with the times and heights of local tidal levels to
avoid hazards that may arise from rapidly shifting water
levels. King Tide impacts may also be observed as an insight
into what typical water levels may be in the future with
additional sea level rise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

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