WEAK51 PAAQ 081819 TSUAK1 BULLETIN Public Tsunami Message Number 2 NWS National Tsunami Warning Center Palmer AK 1119 AM PDT Fri Jul 8 2016 UPDATES ------- * A tsunami has been confirmed and some impacts are expected * Updated observations * Revised alert areas * Revised forecast information ...THE TSUNAMI ADVISORY REMAINS IN EFFECT... Tsunami Advisory in Effect for; * CALIFORNIA - The coast from Gualala River, California (80 miles NW of San Francisco) to The Oregon/Cal. Border * OREGON - The coast from The Oregon/Cal. Border to Douglas/Lane Line, Oregon (10 miles SW of Florence) * ALEUTIAN ISLANDS - Unimak Pass, Alaska (80 miles NE of Unalaska) to Samalga Pass, Alaska (30 miles SW of Nikolski) * ALEUTIAN ISLANDS - Samalga Pass, Alaska (30 miles SW of Nikolski) to Attu, Alaska Including the Pribilof Islands For other US and Canadian Pacific coasts in North America - there is no tsunami threat. PRELIMINARY EARTHQUAKE PARAMETERS --------------------------------- * The following parameters are based on a rapid preliminary assessment and changes may occur. * Magnitude 8.2 * Origin Time 1009 AKDT Jul 08 2016 1109 PDT Jul 08 2016 1809 UTC Jul 08 2016 * Coordinates 52.0 North 160.0 East * Depth 21 miles * Location 325 miles SW of Bering I., Komandorski 90 miles SE of Petropavlovsk, Kamchatka FORECASTS OF TSUNAMI ACTIVITY ----------------------------- * A tsunami has been generated. The first waves are forecasted to arrive at the following locations and specified times. * Forecast tsunami duration is the approximate length of time which the tsunami may produce dangerous currents and waves. * Forecast max tsunami height is the highest expected water level above the tide. * Forecasts are not provided for sites which have been impacted more than an hour prior to the time of this message. Forecast Forecast Forecast start tsunami max tsunami Site of tsunami duration height ---- ---------- -------- ------------- * Alaska Shemya 1130 AKDT Jul 8 20 HRS 1.4- 2.6ft Adak 1230 AKDT Jul 8 less than 1ft Unalaska 1335 AKDT Jul 8 less than 1ft Saint Paul 1345 AKDT Jul 8 less than 1ft * Oregon Port Orford 1825 PDT Jul 8 less than 1ft Charleston 1835 PDT Jul 8 less than 1ft Brookings 1840 PDT Jul 8 less than 1ft * California Fort Bragg 1840 PDT Jul 8 less than 1ft Crescent City 1840 PDT Jul 8 9 HRS 0.9- 1.7ft OBSERVATIONS OF TSUNAMI ACTIVITY - UPDATED ------------------------------------------ * Observed max tsunami height is the highest recorded water level above the tide level up to the time of this message. TIME OBSERVED MAX SITE OF MEASUREMENT TSUNAMI HEIGHT ---------------------------- ---------------- -------------- Shemya Alaska 1230 PDT JUL 8 1.6ft RECOMMENDED ACTIONS ------------------- Actions to protect human life and property will vary within tsunami advisory areas. If you are in a tsunami advisory area; * Move out of the water, off the beach, and away from harbors, marinas, breakwaters, bays and inlets. * Be alert to and follow instructions from your local emergency officials because they may have more detailed or specific information for your location. * If you feel a strong earthquake or extended ground rolling take immediate protective actions such as moving inland and/or uphill preferably by foot. * Boat operators, * Where time and conditions permit move your boat out to sea to a depth of at least 180 feet. * If at sea avoid entering shallow water, harbors, marinas, bays, and inlets to avoid floating and submerged debris and strong currents. * Do not go to the shore to observe the tsunami. * Do not return to the coast until local emergency officials indicate it is safe to do so. IMPACTS ------- Impacts will vary at different locations in the advisory areas. If you are in a tsunami advisory area; * A tsunami with strong waves and currents is possible. * waves and currents can drown or injure people who are in the water. * Currents at beaches and in harbors, marinas, bays, and inlets may be especially dangerous. * Some impacts may continue for many hours to days after arrival of the first wave. * The first wave may not be the largest so later waves may be larger. * Each wave may last 5 to 45 minutes as a wave encroaches and recedes. * Coasts facing all directions are threatened because the waves can wrap around islands and headlands and into bays. * Strong shaking or rolling of the ground indicates an earthquake has occurred and a tsunami may be imminent. * A rapidly receding or receded shoreline, unusual waves and sounds, and strong currents are signs of a tsunami. * The tsunami may appear as water moving rapidly out to sea, a gentle rising tide like flood with no breaking wave, as a series of breaking waves, or a frothy wall of water. ADDITIONAL INFORMATION AND NEXT UPDATE -------------------------------------- * Refer to the internet site ntwc.arh.noaa.gov for more information. * Pacific coastal residents outside California, Oregon, Washington, British Columbia and Alaska should refer to the Pacific Tsunami Warning Center messages at ptwc.weather.gov. * This message will be updated within 60 minutes. $$