https://www.emergencyinfobc.gov.bc.ca/tsunami-warning-coasta...

This British Columbia government webpage includes the tsunami watch locations and time estimates for Canadian locations PLUS information from the same source as the USGS webpage.

Cut-n-paste to reduce their server load (but check directly later for updates. Stated update frequency is 30 minutes):

UPDATE: Tsunami Warning: coastal areas of BC following 7.9M earthquake in Gulf of Alaska. Jan. 23, 2018 at 02:08AM
January 23, 2018 at 2:57 am

This information is preliminary and may change rapidly. Listen to local officials and visit National Tsunami Warning Center for more information.
Update: revised magnitude
Tsunami Warning REMAINS in Effect for;
* BRITISH COLUMBIA, The Juan de Fuca Strait coast, the outer
west coast of Vancouver Island, the central coast and
northeast Vancouver Island, and the north coast and Haida
Gwaii
* SOUTHEAST ALASKA, The inner and outer coast from The
BC/Alaska Border to Cape Fairweather, Alaska (80 miles SE
of Yakutat)
* SOUTH ALASKA AND THE ALASKA PENINSULA, Pacific coasts from
Cape Fairweather, Alaska (80 miles SE of Yakutat) to Unimak
Pass, Alaska (80 miles NE of Unalaska)
* ALEUTIAN ISLANDS, Unimak Pass, Alaska (80 miles NE of
Unalaska) to Attu, Alaska including the Pribilof Islands
Tsunami Watch REMAINS in Effect for;
* CALIFORNIA, The coast from The Cal./Mexico Border to The
Oregon/Cal. Border including San Francisco Bay
* OREGON, The coast from The Oregon/Cal. Border to The
Oregon/Wash. Border including the Columbia River estuary
coast
* WASHINGTON, Outer coast from the Oregon/Washington border
to Slip Point, Columbia River estuary coast, and the Juan
de Fuca Strait coast
PPRELIMINARY EARTHQUAKE PARAMETERS – UPDATED
——————————————-
* The following parameters are based on a rapid preliminary
assessment and changes may occur.
* Magnitude 7.9
* Origin Time 0032 AKST Jan 23 2018
0132 PST Jan 23 2018
0932 UTC Jan 23 2018
* Coordinates 56.0 North 149.1 West
* Depth 12 miles
* Location 175 miles SE of Kodiak City, Alaska
360 miles S of Anchorage, Alaska
FORECASTS OF TSUNAMI ACTIVITY
—————————–
* Tsunami activity is forecasted to start at the following
locations at the specified times.
FORECAST
START
SITE OF TSUNAMI
—- ———-
* Alaska
Kodiak 0145 AKST Jan 23
Seward 0155 AKST Jan 23
Elfin Cove 0155 AKST Jan 23
Sitka 0200 AKST Jan 23
Yakutat 0205 AKST Jan 23
Valdez 0215 AKST Jan 23
Sand Point 0220 AKST Jan 23
Cordova 0225 AKST Jan 23
Unalaska 0240 AKST Jan 23
Homer 0255 AKST Jan 23
Craig 0300 AKST Jan 23
Cold Bay 0300 AKST Jan 23
Adak 0305 AKST Jan 23
Shemya 0350 AKST Jan 23
Saint Paul 0400 AKST Jan 23
* British Columbia
Langara 0210 AKST Jan 23
Tofino 0340 AKST Jan 23
* Washington
Neah Bay 0455 PST Jan 23
Long Beach 0500 PST Jan 23
Moclips 0500 PST Jan 23
Westport 0510 PST Jan 23
Port Angeles 0530 PST Jan 23
Port Townsend 0555 PST Jan 23
* Oregon
Port Orford 0505 PST Jan 23
Charleston 0510 PST Jan 23
Seaside 0510 PST Jan 23
Newport 0515 PST Jan 23
Brookings 0515 PST Jan 23
* California
Crescent City 0520 PST Jan 23
Horse Mountain 0525 PST Jan 23
Fort Bragg 0525 PST Jan 23
Monterey 0555 PST Jan 23
San Francisco 0620 PST Jan 23
Port San Luis 0620 PST Jan 23
Santa Barbara 0635 PST Jan 23
Los Angeles Harb 0650 PST Jan 23
Newport Beach 0700 PST Jan 23
La Jolla 0705 PST Jan 23
Oceanside 0705 PST Jan 23
OBSERVATIONS OF TSUNAMI ACTIVITY
——————————–
* No tsunami observations are available to report.