


Marine Weather Statement
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
Versions:
1
101 FZMY70 PGUM 300316 MWSGUM Marine Weather Statement National Weather Service Tiyan GU 116 PM ChST Wed Jul 30 2025 PMZ151>154-300515- 116 PM ChST Wed Jul 30 2025 ...TSUNAMI WAVES PROBABLE AFTER 230 PM ChST.... At 925 ChST a magnitude 8.7 earhquake occurred at 52.2 North latitude, 160.0 longitude, at a depth of 46 miles, rougly 320 miles east of the tip of the Kamchatka Peninsula in Russia. TSUNAMI WAVES HAVE ALREADY BEEN DETECTED by the DART buoys in the northern Pacific! HAZARD...Tsunami waves of 0.3 meters to 1 meter in height, or up to 3.3 feet in height. POTENTIAL IMPACTS * Atsunami is a series of waves. The time between wave crests can vary from 5 minutes to an hour. The hazard may persist for many hours or longer after the initial wave. * Impacts can vary significantly from one section of the coast to the next due to local bathymetry and the shape and elevation of the shoreline. * Impacts can also vary depending upton the state of the tide at the time of maximum tsunami waves. * Persons caught in the water of a tsunami may drown, be crushed by debris in the water, or be swept out to sea. Stay out of the water! * Minor flooding could occur on beaches and in harbor areas. * Strong and unusual ocean currents will be possible in harbors, bays, and other near-shore waters. PRECAUTIONARY/PREPAREDNESS ACTIONS Continue to listen for updates regarding changes to the advisory status from the National Weather Service Guam and local Emergency Management Offices. Updated texts and threat messages can be found at tsunami.gov && LAT...LON 1263 14434 1302 14400 1370 14398 1420 14447 1457 14461 1481 14495 1524 14492 1561 14514 1594 14560 1587 14615 1563 14640 1513 14649 1427 14593 1397 14593 1314 14549 1261 14495 $$ PD/BA