DESCRIPTION

…TSUNAMI WARNING IS IN EFFECT FOR COASTAL DEL NORTE AND THE NORTH HUMBOLDT COAST…

…TSUNAMI ADVISORY IS IN EFFECT FOR SOUTHERN HUMBOLDT COAST AND MENODCINO COAST…

* UPDATES… New observatiosn form ongoing Tsunami waves.

** LOCAL IMPACTS… A tsunami with significant widespread inundation is expected, with possible and dangerous coastal flooding accompanied by powerful currents. Greatest threat for and around Crescent City Harbor with waves up to 5 feet. Lesser risk in Humboldt with waves up to 1 feet and up to 3 feet in some very localized areas.

* RECOMMENDED ACTIONS… If you are located in this coastal area, move to higher ground. Stay out of the water, off the beach and away from harbors, marinas and bays. Do not go to the coast to watch the tsunami. Be alert to instructions from your local emergency officials.

* FORECAST TSUNAMI START TIMES… Fort Bragg California 1150 PM PDT on Jul 29

Tsunamis often arrive as a series of waves or surges which could be dangerous for many hours after the first wave arrival. The first tsunami wave or surge may not be the highest in the series.

* FORECAST TSUNAMI DURATION… Fort Bragg9 Hours Crescent City30 Hours

* FORECAST PEAK TSUNAMI WAVE HEIGHTS… Fort Bragg 0.7 to 1.4 ft Crescent City 2.7 to 5.0 ft Humboldt Bay Around 1 ft.

* OBSERVED TSUNAMI WAVE HEIGHTS FROM EARLIER… Tsunami waves are startingto arrive on the West Coast. Up to 3.6 ft observed in Crescent City Up to 1.2 ft observed in Humboldt Bay Up to 3.0 ft observed in Arena Cove

* PRELIMINARY EARTHQUAKE INFORMATION… An earthquake occurred with a preliminary magnitude of 8.8.

* TIDE INFORMATION… Humboldt Bay North Spit…Low tides of 1.8 ft at 1008 PM PDT on Jul 30, and 2.1 ft at 935 AM PDT on Jul 31. High tides of 6.2 ft at 343 PM PDT on Jul 30, and 4.7 ft at 358 AM PDT on Jul 31. Crescent City Harbor…Low tides of 1.8 ft at 1002 PM PDT on Jul 30, and 2.1 ft at 927 AM PDT on Jul 31. High tides of 6.3 ft at 329 PM PDT on Jul 30, and 4.7 ft at 349 AM PDT on Jul 31.

This product will be updated as new information becomes available. Stay tuned to your local news source and NOAA weather radio for further information and updates.