Tsunami Advisory for the West Coast of the United States Following Volcanic Eruption in Tonga

Underwater volcano Hunga-Tonga-Hunga-Ha’apai has been erupting for a month. YouTube Tips ⓘ

A large volcanic eruption occurred near the Tonga Islands at 8:27 PM PST on Friday, January 14, 2022. Therefore a Tsunami Advisory is in effect for all coastal areas of the western United States.

Widespread inundation is NOT expected; however, a tsunami is capable of producing strong currents that may be hazardous to swimmers, boats, and coastal structures. The strong currents are expected, according to the National Weather Service Office warnings and reports gathered from NWS San Francisco Bay Area, National Weather Service Los Angeles/Oxnard CA, and the NWS National Tsunami Warning Center Palmer, Alaska.

Initially, no injuries were reported in Tonga.

A large eruption began on January 14, 2022 with clouds of ash reaching 20 kilometers (12 mi) high into the atmosphere, according to Radio New Zealand. The government of Tonga issued a tsunami warning to residents. Tongan geologists near the volcano observed explosions and a 5-kilometre (3.1 mi) wide ash column, according to Matangi Tonga Online.

A second, larger volcano eruption occurred on Saturday, January 15, 2022 at about 4:00 UTC with a reported deafening sound and a rain of small black stones and black ashes, according to Kaniva Tonga News. TV reports also reported the smell of sulfur in the area.

Tonga, officially named the Kingdom of Tonga, is a Polynesian country and also an archipelago consisting of 169 islands located northeast of New Zealand and east-northeast of Australia. Thirty-six of the islands are inhabited with a population of 100,209, according to the 2021 Census.

Taking a look at the volcanic eruption off the coast of Tonga (First Coast News/NBC 12/ABC 25 in Jacksonville, Florida). YouTube Tips ⓘ

  HONGA, TONGA  

Hunga, Tonga

Tsunami Advisory
Tsunami Message Number 5
NWS National Tsunami Warning Center Palmer AK
632 AM PST Sat Jan 15 2022

PZZ530-531-CAZ043-040-041-552-087-549-550-039-034-035-529-
530-006-505-506-508-509-109-104-103-101-ORZ021-022-002-001-
WAZ001-021-510-514>517-BCZ160-142-141-150-121-220-210-922-
912-921-911-110-122-AKZ027>029-023-024-026-018>022-025-017-
131-135-125-121-171-181-185-187-195-191-151602-
/O.CON.PAAQ.TS.Y.0003.000000T0000Z-000000T0000Z/
Coastal areas between and including The Cal./Mexico Border
to Attu, Alaska
632 AM PST Sat Jan 15 2022

…THE TSUNAMI ADVISORY REMAINS IN EFFECT FOR THE COASTAL
AREAS OF CALIFORNIA, OREGON, WASHINGTON, BRITISH COLUMBIA
AND ALASKA FROM THE CAL./MEXICO BORDER TO ATTU ALASKA…

If you are located in this coastal area, move off the
beach and out of harbors and marinas.

Tsunami advisories mean that a tsunami capable of producing
strong currents or waves dangerous to persons in or very near
the water is expected or is already occurring. Areas in the
advisory should not expect widespread inundation. Tsunamis
are a series of waves dangerous many hours after initial
arrival time. The first wave may not be the largest.

At 8:27 PM Pacific Standard Time on January 14 an earthquake with
preliminary magnitude 1.0 occurred near the Tonga Islands.

Estimated tsunami start times for selected sites:
(Turn sideways for better readability on smartphone)

Adak               Alaska              600 AM. AKST. January 15.
Shemya             Alaska              615 AM. AKST. January 15.
Fort Bragg         California          735 AM.  PST. January 15.
Monterey           California          735 AM.  PST. January 15.
Port San Luis      California          740 AM.  PST. January 15.
Santa Barbara      California          745 AM.  PST. January 15.
La Jolla           California          750 AM.  PST. January 15.
Los Angeles Harbor California          750 AM.  PST. January 15.
Unalaska           Alaska              650 AM. AKST. January 15.
Port Orford        Oregon              755 AM.  PST. January 15.
Newport Beach      California          755 AM.  PST. January 15.
Oceanside          California          755 AM.  PST. January 15.
Crescent City      California          800 AM.  PST. January 15.
Brookings          Oregon              800 AM.  PST. January 15.
Charleston         Oregon              810 AM.  PST. January 15.
Sand Point         Alaska              710 AM. AKST. January 15.
San Francisco      California          810 AM.  PST. January 15.
Langara            British Columbia    830 AM.  PST. January 15.
Newport            Oregon              830 AM.  PST. January 15.
Long Beach         Washington          835 AM.  PST. January 15.
Saint Paul         Alaska              735 AM. AKST. January 15.
La Push            Washington          845 AM.  PST. January 15.
Cold Bay           Alaska              745 AM. AKST. January 15.
Seaside            Oregon              845 AM.  PST. January 15.
Kodiak             Alaska              750 AM. AKST. January 15.
Neah Bay           Washington          850 AM.  PST. January 15.
Tofino             British Columbia    850 AM.  PST. January 15.
Westport           Washington          850 AM.  PST. January 15.
Sitka              Alaska              755 AM. AKST. January 15.
Moclips            Washington          855 AM.  PST. January 15.
Elfin Cove         Alaska              755 AM. AKST. January 15.
Seward             Alaska              815 AM. AKST. January 15.
Yakutat            Alaska              815 AM. AKST. January 15.
Valdez             Alaska              830 AM. AKST. January 15.

The tsunami advisory will remain in effect until further notice.
Refer to the internet site tsunami.gov for more information.

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An enormous underwater volcano called Hunga Tonga-Hunga Ha’apai erupted in the South Pacific, creating tsunami waves that hit the country of Tonga. The eruption was heard as far away as New Zealand and could be seen from space (NBC News). YouTube Tips ⓘ