Tsunami Advisory

posted Mar 11, 2011, 9:03 AM by smike@guemesfire.org   [ updated Mar 11, 2011, 12:39 PM ]
907 AM PST FRI MAR 11 2011.

..A TSUNAMI ADVISORY REMAINS IN EFFECT FOR THE COAST AND THE LAND   
AREAS ADJACENT TO THE STRAIT OF JUAN DE FUCA AND THE NORTHERN   
INLAND WATERS...

A TSUNAMI ADVISORY REMAINS IN EFFECT FOR THE ENTIRE WASHINGTON   
COAST AS WELL AS THE STRAIT OF JUAN DE FUCA...ADMIRALTY INLET   
AREA...AND THE SAN JUANS.   

A POWERFUL MAGNITUDE 8.9 EARTHQUAKE OCCURRED THURSDAY NIGHT IN
EASTERN JAPAN. THE LEADING EDGE OF THE WAVE FRONT ARRIVED ON THE
WASHINGTON COAST AROUND 7 AM PST THIS MORNING.

THE FOLLOWING ARE ARRIVAL TIMES AND INITIAL OBSERVED AMPLITUDES
FOR THE TSUNAMI WAVE.

NEAH BAY...712 AM PST...0.6 FT.
LA PUSH...724 AM PST...1.7 FT.
PORT ANGELES...824 AM PST...0.6 FT.
WESTPORT...730 AM...1.3 FT.

THE FOLLOWING ARE FORECAST WAVE AMPLITUDES WHERE NO DATA EXISTS.

MOCLIPS...3.7 FEET.
LONG BEACH...2.4 FEET.
BELLINGHAM...0.9 FOOT.

REPEAT...A TSUNAMI ADVISORY IS IN EFFECT FOR THE COAST AND THE
LAND AREAS ADJACENT TO THE STRAIT OF JUAN DE FUCA AND THE NORTHERN
INLAND WATERS.

A TSUNAMI ADVISORY MEANS THAT A TSUNAMI CAPABLE OF PRODUCING STRONG
CURRENTS OR WAVES HAZARDOUS TO PEOPLE IN OR VERY NEAR THE WATER IS
EXPECTED. SIGNIFICANT WIDESPREAD INUNDATION IS NOT ANTICIPATED IN
THE ADVISORY AREA. SOME AREAS COULD EXPERIENCE DANGEROUS CURRENTS
AND SURGES IN HARBORS OR BAYS.

THE INITIAL WAVE MAY NOT BE THE LARGEST. COASTAL RESIDENTS ARE
ADVISED TO STAY OUT OF THE WATER...OFF THE BEACH...AND AWAY FROM
HARBORS AND MARINAS. WAVE HEIGHTS AND CURRENTS ARE AMPLIFIED BY
IRREGULAR SHORELINE AND ARE DIFFICULT TO PREDICT. THE TSUNAMI MAY
NOT BE VISIBLE AMONG THE COMMON OCEAN SURF...YET TIDE GAGES WILL
LIKELY REPORT SOME FLUCTUATIONS.

MARINERS IN WATER DEEPER THAN 600 FEET SHOULD NOT BE AFFECTED BY
A TSUNAMI.
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