Post by kriss on Jan 21, 2022 20:28:07 GMT -5
After mega-quake, there won’t be much time before tsunami waves reach Olympic Peninsula
Fri, January 21, 2022, 7:00 AM
Last weekend’s undersea volcanic explosion near Tonga devastated the island nation and sent small tsunami waves to Washington’s ocean coast. Those waves took about 12 hours to reach the state and gave residents plenty of time to prepare if they had been bigger.
Those same residents would have only 10 minutes to evacuate for waves up to 100-feet-high that would hit them following a massive earthquake in the Cascadia subduction zone. Some might not get that much time. Ground sinking below their feet might flood during a magnitude 9 quake.
That’s what computer modeling shows, according to a report released Jan. 10 by the Washington Geological Survey. The report illustrates what would happen to cities, river mouths, beaches and other low-lying areas on the Olympic Peninsula. Previously, the Geological Survey released maps for the southwest Washington coast, San Juan islands and Puget Sound.
The report includes detailed maps from just north of Grays Harbor to Port Townsend. The goal is to prepare both officials charged with community protection as well as to warn the public of potential hazards.
more:
www.yahoo.com/news/mega-quake-won-t-much-130000744.html
Fri, January 21, 2022, 7:00 AM
Last weekend’s undersea volcanic explosion near Tonga devastated the island nation and sent small tsunami waves to Washington’s ocean coast. Those waves took about 12 hours to reach the state and gave residents plenty of time to prepare if they had been bigger.
Those same residents would have only 10 minutes to evacuate for waves up to 100-feet-high that would hit them following a massive earthquake in the Cascadia subduction zone. Some might not get that much time. Ground sinking below their feet might flood during a magnitude 9 quake.
That’s what computer modeling shows, according to a report released Jan. 10 by the Washington Geological Survey. The report illustrates what would happen to cities, river mouths, beaches and other low-lying areas on the Olympic Peninsula. Previously, the Geological Survey released maps for the southwest Washington coast, San Juan islands and Puget Sound.
The report includes detailed maps from just north of Grays Harbor to Port Townsend. The goal is to prepare both officials charged with community protection as well as to warn the public of potential hazards.
more:
www.yahoo.com/news/mega-quake-won-t-much-130000744.html