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Go Back   SailNet Community > General Interest > General Discussion (sailing related) > !!!tsunami warning for british columbia!!!
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Topic Review (Newest First)
10-28-2012 02:25 PM
blt2ski
Re: !!!tsunami warning for british columbia!!!

Looks like bigger waves from this than the japan quakes........ altho maybe not as damaging. or am I forgetting that the waves were bigger for the Japan quake.
10-28-2012 01:24 PM
MedSailor
Re: !!!tsunami warning for british columbia!!!

More observations. Looks like Crecent City California got a 1.5' wave. And part of Hawaii got a 2.5 ft wave

Medsailor

LOCATION LAT LON TIME AMPL
------------------------ ----- ------ ------- -----------
CRAIG AK 55.5N 133.1W 0446UTC 00.3FT/00.10M
PORT ALEXANDER AK 56.2N 134.6W 0533UTC 00.5FT/00.14M
SITKA AK 57.1N 135.3W 0730UTC 00.4FT/00.12M
ELFIN COVE AK 58.2N 136.3W 0448UTC 00.2FT/00.07M
YAKUTAT AK 59.5N 139.7W 0732UTC 00.5FT/00.14M
SEWARD AK 60.1N 149.4W 0600UTC 00.5FT/00.16M
KODIAK AK 57.7N 152.5W 0650UTC 00.4FT/00.13M
SAND POINT AK 55.3N 160.5W 0744UTC 00.3FT/00.08M
DUTCH HARBOR AK 53.9N 166.5W 0755UTC 00.1FT/00.04M
NIKOLSKI AK 52.9N 168.9W 0753UTC 00.2FT/00.06M
ATKA AK 52.2N 174.2W 0831UTC 00.5FT/00.14M
WINTER HARBOUR BC 50.7N 128.3W 0746UTC 00.8FT/00.24M
NEAH BAY WA 48.4N 124.6W 0530UTC 00.3FT/00.10M
PORT ANGELES WA 48.1N 123.4W 0640UTC 00.4FT/00.11M
LA PUSH WA 47.5N 124.4W 0448UTC 00.4FT/00.13M
WESTPORT WA 46.9N 124.1W 0550UTC 00.3FT/00.10M
GARIBALDI OR 45.6N 123.9W 0515UTC 00.2FT/00.05M
SOUTH BEACH OR 44.6N 124.0W 0524UTC 00.3FT/00.09M
CHARLESTON OR 43.3N 124.3W 0702UTC 00.4FT/00.12M
PORT ORFORD OR 42.7N 124.5W 0841UTC 00.8FT/00.23M
CRESCENT CITY CA 41.7N 124.2W 0914UTC 01.5FT/00.46M
NORTH SPIT CA 40.8N 124.2W 0626UTC 00.5FT/00.15M
ARENA COVE CA 38.9N 123.7W 0637UTC 01.3FT/00.41M
POINT REYES CA 38.0N 123.0W 0905UTC 00.8FT/00.25M
SAN FRANCISCO CA 37.8N 122.5W 0802UTC 00.5FT/00.14M
MONTEREY HARBOR CA 36.6N 121.9W 0738UTC 00.4FT/00.13M
PORT SAN LUIS CA 35.2N 120.8W 0810UTC 00.9FT/00.27M
LA JOLLA CA 32.9N 117.3W 0742UTC 00.2FT/00.06M
MOKULOE OAHU HI 21.4N 157.8W 0854UTC 00.2FT/00.08M
NAWILWILI HI 22.0N 159.4W 0851UTC 00.1FT/00.03M
HILO HI 19.7N 155.1W 1013UTC 01.2FT/00.37M
KAHULUI MAUI HI 20.9N 156.5W 0900UTC 02.5FT/00.76M
KAWAIHAE HI 20.0N 155.8W 0931UTC 01.9FT/00.56M
HALEIWA HI 21.6N 158.1W 0855UTC 01.4FT/00.43M
HONOLULU OAHU HI 21.3N 157.9W 0905UTC 00.5FT/00.15M
MAKAPUU HI 21.3N 157.7W 0934UTC 01.3FT/00.41M

TIME - TIME OF MEASUREMENT
AMPL - TSUNAMI AMPLITUDES ARE MEASURED RELATIVE TO NORMAL SEA LEVEL.
IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
VALUES ARE GIVEN IN BOTH METERS/M/ AND FEET/FT/.

PRELIMINARY EARTHQUAKE PARAMETERS
MAGNITUDE - 7.7
TIME - 1904 AKDT OCT 27 2012
2004 PDT OCT 27 2012
0304 UTC OCT 28 2012
LOCATION - 52.9 NORTH 131.9 WEST
25 MILES/40 KM S OF SANDSPIT BRITISH COLUMBIA
385 MILES/620 KM SE OF JUNEAU ALASKA
DEPTH - 12 MILES/19 KM
10-28-2012 01:11 PM
blt2ski
Re: !!!tsunami warning for british columbia!!!

Must not be that big a deal, can not find anything really quick on th internet either........hmmmmmm may have to try a few more sites yet....

marty
10-28-2012 12:48 PM
whroeder
Re: !!!tsunami warning for british columbia!!!

Quote:
Originally Posted by MedSailor View Post
0.5 ft tsunami in BC. Doesn't sound that bad, though I have no concept of how different a 1/2 foot tsunami wave is from a regular one.
If you are standing in a flooded road and a truck makes a 6 in wave, you get a little wetter.
If you are standing in a flooded road and a 6 in tsunami comes in, you would be now standing in a 1 ft RIVER watching cars float by.
Comparing water level before and after the initial wave, looks to me to be 6-10 in.
10-28-2012 12:29 PM
emoney
Re: !!!tsunami warning for british columbia!!!

Wow, very interesting. I guess the warning system doesn't have a lot of advance notice on these things. At least, from halfway across the Continent it doesn't seem like there's been much talk about it. Hope everyone is ok.
10-28-2012 11:59 AM
Faster
Re: !!!tsunami warning for british columbia!!!

Jeez, Dog Ship... you were up early!!

Latest news locally everythings downgraded. According to an SFU geologist this is a very interesting scenario. Typically on the north coast it's a San-Andreas type fault and mainly horizontal plate movement is expected. The vertical movement required to generate tsunamis is not a normal part of the pattern (unlike what might be expected on the south coast area, apparently.. though the Alaskan quake in the 60s certainly sent a wave down here at that time)

Anyhow we've been lucky.. 7.7 is not trifling, there are no reports of any injuries and the tsunami concerns are fading by the hour.
10-28-2012 08:10 AM
Dog Ship
Re: !!!tsunami warning for british columbia!!!

I would hear sirens if anything was happening and I don't hear anything.
10-28-2012 04:23 AM
delite
Re: !!!tsunami warning for british columbia!!!

The local news reported a 42cm wave headed for Hawaii. Nothing locally and no damage according to the news
10-28-2012 03:53 AM
addict
!!!tsunami warning for british columbia!!!

It's been lifted to an advisory.
10-28-2012 02:59 AM
MedSailor
Re: !!!tsunami warning for british columbia!!!

MEASUREMENTS OR REPORTS OF TSUNAMI ACTIVITY

LOCATION LAT LON TIME AMPL
------------------------ ----- ------ ------- -----------
DART46419PT NW SEATTLE 48.8N 129.6W 0345UTC 00.2FT/00.07M
CRAIG AK 55.5N 133.1W 0427UTC 00.4FT/00.11M
PORT ALEXANDER AK 56.2N 134.6W 0410UTC 00.3FT/00.08M
WINTER HARBOUR BC 50.7N 128.3W 0402UTC 00.5FT/00.15M
SITKA AK 57.1N 135.3W 0424UTC 00.3FT/00.08M


0.5 ft tsunami in BC. Doesn't sound that bad, though I have no concept of how different a 1/2 foot tsunami wave is from a regular one.

The information above was included in a message that stated that the tsunami advisory had been increased to include Oregon and northern California. Why, would you widen the advisory area when you're getting data like 0.2ft in Seattle?

BTW, if you live aboard and don't yet have your phone set up for tsunami alerts from NOAA or the Canadian equivalent, you might want to think about doing so.

G'night all!



MedSailor
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