Author Topic: Watch just issue for Alaska and West Coast  (Read 5396 times)

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Offline Scalphunter

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Watch just issue for Alaska and West Coast
« on: March 11, 2011, 03:29:09 AM »
 Just came  in  from NWS and  Alaska tsunami warning center


Warning Description: Tsunami Watch

Warning Date: 12:14 am PST on March 11, 2011

WarningSum:...The Tsunami Watch Continues In Effect For The Coastal
   Areas Of California - Oregon - Washington - British
   Columbia And Alaska From The California-Mexico Border To
   Chignik Bay Alaska...

Warning Message:Persons in Tsunami Watch coastal areas should stay alert for
supplemental information.
Tsunami watches are an advance notice to areas that could be
impacted by a tsunami at a later time. Tsunamis are a series of
waves potentially dangerous several hours after initial arrival
time. Estimated times of initial wave arrival for selected
sites in the watch are provided below.
Kodiak-AK        0351 akst Mar 11     tofino-BC        0658  PST Mar 11
Seward-AK        0416 akst Mar 11    Neah Bay-WA      0710  PST Mar 11
Elfin Cove-AK    0418 akst Mar 11    Charleston-or    0715  PST Mar 11
Yakutat-AK       0425 akst Mar 11    Crescent City-CA 0723  PST Mar 11
Sitka-AK         0425 akst Mar 11      seaside-or       0724  PST Mar 11
Valdez-AK        0435 akst Mar 11     Westport-WA      0725  PST Mar 11
Langara-BC       0535  PST Mar 11    San Francisco-CA 0808  PST Mar 11
Cordova-AK       0445 akst Mar 11    Santa Barbara-CA 0817  PST Mar 11
Homer-AK         0508 akst Mar 11    San Pedro-CA     0832  PST Mar 11
Craig-AK         0526 akst Mar 11      La Jolla-CA      0841  PST Mar 11
For arrival times at additional locations see
wcatwc.Arh.NOAA.Gov

Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #1 on: March 11, 2011, 05:45:45 AM »
 Update bulletin from the Tsunami Center

Warning Description: Tsunami Advisory

Warning Date: 1:14 am AKST on March 11, 2011

WarningSum:...Tsunami Advisory In Effect For The Coast Of Southeast Alaska...

Warning Message:A tsunami advisory is in effect for coastal Southeast Alaska
from British Columbia border to Cape Suckling including the towns
of Craig. Sitka. Elfin Cove. And Yakutat.
A tsunami advisory means that a tsunami capable of producing strong currents
or waves is imminent or expected and may contiue for several hours after the
initial wave arrival. These waves may be hazardous to boats. Coastal structures.
Swimmers. And other people in or near the water. Significant widespread
inudation is not expected for areas under this advisory.
Estimated times for the initial tsunami waves are.
Craig. 5:26 am akst.
Sitka. 4:25 am akst.
Elfin Cove. 4:18 am akst.
Yakutat. 4:25 am akst.
Again. A tsunami advisory is in effect for coastal Southeast Alaska
from British Columbia border to Cape Suckling. 
135 am PST Fri Mar 11 2011
...The tsunami advisory continues in effect for the coastal
   areas of Washington - British Columbia and Alaska from the
   Oregon-Washington border to Amchitka Pass Alaska/125 miles
   W of Adak/...
Persons in tsunami advisory coastal areas should move out of
the water... 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
water is imminent or expected. Significant widespread inundation
is not expected for areas in an advisory. Tsunamis are a series of
waves potentially dangerous several hours after initial arrival
time. Estimated times of initial wave arrival for selected
sites in the advisory are provided below.
Adak-AK          0110 akst Mar 11  Valdez-AK        0435 akst Mar 11
Dutch Harbor-AK  0220 akst Mar 11  Langara-BC       0535  PST Mar 11
Sand Pt.-AK      0257 akst Mar 11  Cordova-AK       0445 akst Mar 11
Cold Bay-AK      0329 akst Mar 11  Homer-AK         0508 akst Mar 11
Kodiak-AK        0351 akst Mar 11  Craig-AK         0526 akst Mar 11
Seward-AK        0416 akst Mar 11  tofino-BC        0658  PST Mar 11
Elfin Cove-AK    0418 akst Mar 11  Neah Bay-WA      0710  PST Mar 11
Yakutat-AK       0425 akst Mar 11  Westport-WA      0725  PST Mar 11
Sitka-AK         0425 akst Mar 11
For arrival times at additional locations see
wcatwc.Arh.NOAA.Gov


 Also  these are post on my website

John

Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #2 on: March 11, 2011, 05:51:53 AM »
 More  ETA of wave arrival

The following list gives estimated times of arrival for
locations along the North American Pacific coast from a
tsunami generated at the given source location.  The
list is ordered by arrival time starting with the earliest.
Since tsunami speed is directly related to
water depth, tsunami ETAs can be computed independent of
tsunami amplitude.  THE LISTING OF A TSUNAMI ARRIVAL TIME
BELOW DOES NOT INDICATE A WAVE IS IMMINENT. The listed arrival
time is the initial wave arrival.  Tsunamis can be dangerous
for many hours after arrival, and the initial wave is not
necessarily the largest.

Source:
Lat:     38.3N
Lng:    142.4E
Mag:    8.9
O-time: 0546UTC
Date:   MAR 11

Estimated times of initial tsunami arrival:

DART 21415                                      2340 AKST MAR 10  0840 UTC MAR 11
Attu, Alaska                                    0012 AKST MAR 11  0912 UTC MAR 11
Shemya, Alaska                                  0013 AKST MAR 11  0913 UTC MAR 11
DART 21414                                      0013 AKST MAR 11  0913 UTC MAR 11
Amchitka Pass, Alaska (125 miles W of Adak)     0026 AKST MAR 11  0926 UTC MAR 11
Amchitka, Alaska                                0029 AKST MAR 11  0929 UTC MAR 11
DART 46413                                      0051 AKST MAR 11  0951 UTC MAR 11
Atka, Alaska                                    0108 AKST MAR 11  1008 UTC MAR 11
Adak, Alaska                                    0110 AKST MAR 11  1010 UTC MAR 11
DART 46408                                      0111 AKST MAR 11  1011 UTC MAR 11
DART 46402                                      0138 AKST MAR 11  1038 UTC MAR 11
Nikolski, Alaska                                0151 AKST MAR 11  1051 UTC MAR 11
DART 46403                                      0212 AKST MAR 11  1112 UTC MAR 11
Akutan, Alaska                                  0217 AKST MAR 11  1117 UTC MAR 11
Dutch Harbor, Alaska                            0220 AKST MAR 11  1120 UTC MAR 11
Unimak Pass, Alaska (80 miles NE of Dutch Harbo 0228 AKST MAR 11  1128 UTC MAR 11
St. Paul, Alaska                                0231 AKST MAR 11  1131 UTC MAR 11
DART 46409                                      0253 AKST MAR 11  1153 UTC MAR 11
King Cove, Alaska                               0255 AKST MAR 11  1155 UTC MAR 11
Sand Point, Alaska                              0257 AKST MAR 11  1157 UTC MAR 11
Perryville, Alaska                              0319 AKST MAR 11  1219 UTC MAR 11
DART 46410                                      0319 AKST MAR 11  1219 UTC MAR 11
Cold Bay, Alaska                                0329 AKST MAR 11  1229 UTC MAR 11
Chignik Bay, Alaska                             0350 AKST MAR 11  1250 UTC MAR 11
Cape Suckling, Alaska (75 miles SE of Cordova)  0351 AKST MAR 11  1251 UTC MAR 11
Kodiak, Alaska                                  0351 AKST MAR 11  1251 UTC MAR 11
Old Harbor, Alaska                              0353 AKST MAR 11  1253 UTC MAR 11
Hinchinbrook Entrance, Alaska (90 miles E of Se 0401 AKST MAR 11  1301 UTC MAR 11
Seward, Alaska                                  0416 AKST MAR 11  1316 UTC MAR 11
Alitak, Alaska                                  0417 AKST MAR 11  1317 UTC MAR 11
Elfin Cove, Alaska                              0418 AKST MAR 11  1318 UTC MAR 11
Kennedy Entrance, Alaska (40 miles SW of Homer) 0420 AKST MAR 11  1320 UTC MAR 11
Yakutat, Alaska                                 0425 AKST MAR 11  1325 UTC MAR 11
Sitka, Alaska                                   0425 AKST MAR 11  1325 UTC MAR 11
Salisbury Sound, Alaska (25 miles NW of Sitka)  0426 AKST MAR 11  1326 UTC MAR 11
Saint Matthew Island, Alaska                    0426 AKST MAR 11  1326 UTC MAR 11
Cape Fairweather, Alaska (80 miles SE of Yakuta 0426 AKST MAR 11  1326 UTC MAR 11
Port Alexander, Alaska                          0427 AKST MAR 11  1327 UTC MAR 11
the Alaska/British Columbia border              0531  PST MAR 11  1331 UTC MAR 11
Valdez, Alaska                                  0435 AKST MAR 11  1335 UTC MAR 11
Langara Island, British Columbia                0535  PST MAR 11  1335 UTC MAR 11
Cordova, Alaska                                 0445 AKST MAR 11  1345 UTC MAR 11
Cape Decision, Alaska (85 miles SE of Sitka)    0447 AKST MAR 11  1347 UTC MAR 11
DART 46419                                      0600  PST MAR 11  1400 UTC MAR 11
Homer, Alaska                                   0508 AKST MAR 11  1408 UTC MAR 11
DART 46404                                      0617  PST MAR 11  1417 UTC MAR 11
the north tip of Vancouver Island, British Colu 0619  PST MAR 11  1419 UTC MAR 11
DART 46407                                      0625  PST MAR 11  1425 UTC MAR 11
Craig, Alaska                                   0526 AKST MAR 11  1426 UTC MAR 11
Ketchikan, Alaska                               0533 AKST MAR 11  1433 UTC MAR 11
Juneau, Alaska                                  0535 AKST MAR 11  1435 UTC MAR 11
DART 46411                                      0649  PST MAR 11  1449 UTC MAR 11
Gambell, Alaska                                 0558 AKST MAR 11  1458 UTC MAR 11
Tofino, British Columbia                        0658  PST MAR 11  1458 UTC MAR 11
the Washington-British Columbia border          0704  PST MAR 11  1504 UTC MAR 11
Prince Rupert, British Columbia                 0704  PST MAR 11  1504 UTC MAR 11
Neah Bay, Washington                            0710  PST MAR 11  1510 UTC MAR 11
Cape Blanco, Oregon                             0711  PST MAR 11  1511 UTC MAR 11
La Push, Washington                             0711  PST MAR 11  1511 UTC MAR 11
Clatsop Spit, Oregon                            0712  PST MAR 11  1512 UTC MAR 11
the Oregon-Washington border                    0712  PST MAR 11  1512 UTC MAR 11
Point Grenville, Washington                     0714  PST MAR 11  1514 UTC MAR 11
Port Moller, Alaska                             0614 AKST MAR 11  1514 UTC MAR 11
Charleston, Oregon                              0715  PST MAR 11  1515 UTC MAR 11
Cascade Head, Oregon (70 miles SW of Portland)  0716  PST MAR 11  1516 UTC MAR 11
Douglas/Lane County Line, Oregon (10 miles SW o 0717  PST MAR 11  1517 UTC MAR 11
Cape Mendocino, California                      0717  PST MAR 11  1517 UTC MAR 11
Tillamook Bay, Oregon                           0718  PST MAR 11  1518 UTC MAR 11
Horse Mountain, California (50 miles SW of Eure 0719  PST MAR 11  1519 UTC MAR 11
Fort Bragg, California                          0721  PST MAR 11  1521 UTC MAR 11
Humboldt Bay, California                        0722  PST MAR 11  1522 UTC MAR 11
the Oregon-California border                    0723  PST MAR 11  1523 UTC MAR 11
Crescent City, California                       0723  PST MAR 11  1523 UTC MAR 11
Seaside, Oregon                                 0724  PST MAR 11  1524 UTC MAR 11
Westport, Washington                            0725  PST MAR 11  1525 UTC MAR 11
Newport, Oregon                                 0726  PST MAR 11  1526 UTC MAR 11
Point Arena, California                         0726  PST MAR 11  1526 UTC MAR 11
Gualala Point, California (80 miles NW of San F 0727  PST MAR 11  1527 UTC MAR 11
Point Reyes, California                         0739  PST MAR 11  1539 UTC MAR 11
Davenport, California (10 miles NW of Santa Cru 0739  PST MAR 11  1539 UTC MAR 11
Point Sur, California                           0742  PST MAR 11  1542 UTC MAR 11
Astoria, Oregon                                 0744  PST MAR 11  1544 UTC MAR 11
Monterey, California                            0744  PST MAR 11  1544 UTC MAR 11
Port Angeles, Washington                        0748  PST MAR 11  1548 UTC MAR 11
Ragged Point, California (45 miles NW of San Lu 0750  PST MAR 11  1550 UTC MAR 11
DART 46412                                      0752  PST MAR 11  1552 UTC MAR 11
Point Concepcion, California                    0757  PST MAR 11  1557 UTC MAR 11
Port San Luis, California                       0803  PST MAR 11  1603 UTC MAR 11
Bella Bella, British Columbia                   0805  PST MAR 11  1605 UTC MAR 11
San Francisco, California                       0808  PST MAR 11  1608 UTC MAR 11
Cape Newenham, Alaska                           0716 AKST MAR 11  1616 UTC MAR 11
Santa Barbara, California                       0817  PST MAR 11  1617 UTC MAR 11
Rincon Point, California (15 miles SE of Santa  0828  PST MAR 11  1628 UTC MAR 11
Santa Monica, California                        0831  PST MAR 11  1631 UTC MAR 11
San Pedro, California                           0832  PST MAR 11  1632 UTC MAR 11
Newport Beach, California                       0837  PST MAR 11  1637 UTC MAR 11
La Jolla, California                            0841  PST MAR 11  1641 UTC MAR 11
Seattle, Washington                             0844  PST MAR 11  1644 UTC MAR 11
Alamitos Bay, California (20 miles SE of L.A.)  0846  PST MAR 11  1646 UTC MAR 11
the California-Mexico border                    0847  PST MAR 11  1647 UTC MAR 11
Hooper Bay, Alaska                              0846 AKST MAR 11  1746 UTC MAR 11
Little Diomede Island, Alaska                   0856 AKST MAR 11  1756 UTC MAR 11
Dillingham, Alaska                              0938 AKST MAR 11  1838 UTC MAR 11
Nome, Alaska                                    1051 AKST MAR 11  1951 UTC MAR 11
Unalakleet, Alaska                              1422 AKST MAR 11  2322 UTC MAR 11



Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #4 on: March 11, 2011, 06:52:34 AM »
 Tidal graph at Adak shows wave passing thru

http://tidesandcurrents.noaa.gov/cgi-bin/tsunami_graphload.cgi?stnid=9461380&name=Adak Island

 John

Offline Scalphunter

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Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #6 on: March 11, 2011, 07:45:11 AM »
Saint Paul Island in Bering sea Tidal station chart

http://tidesandcurrents.noaa.gov/cgi-bin/tsunami_graphload.cgi?stnid=9464212&name=Village Cove, St. Paul Island

Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #7 on: March 11, 2011, 08:00:22 AM »

Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #8 on: March 11, 2011, 09:17:07 AM »
Measurements or reports of tsunami activity:


 Location                   Lat.   Lon.    Time        Amplitude ------------------------  -----  ------  -------     -----------
 Shemya  AK                52.7N  174.1E  1130UTC   05.1FT/01.56M
 Adak  AK                  51.9N  176.6W  1112UTC   01.5FT/00.46M
 Boso  Japan               34.8N  140.8E  0600UTC   02.5FT/00.75M
 Naha  Japan               26.2N  127.7E  1022UTC   01.6FT/00.49M
 Ofunato  Japan            39.0N  141.8E  0603UTC   10.7FT/03.25M
 Omaezaki  Japan           34.6N  138.2E  0809UTC   04.6FT/01.39M
 Tokai  Japan              33.8N  137.6E  0649UTC   00.8FT/00.23M
 Tosashimizu  Japan        32.8N  132.9E  0753UTC   03.0FT/00.91M
 Kwajalein  Marshall Isl    8.7N  167.7E  1049UTC   01.0FT/00.30M
 Midway Is.  USA           28.2N  177.4W  1044UTC   05.1FT/01.55M
 Wake Is.  USA             19.3N  166.6E  0918UTC   01.7FT/00.52M
 Legaspi  Philippines      13.2N  123.8E  1020UTC   01.1FT/00.32M
 Dutch Harbor  AK          53.9N  166.5W  1134UTC   01.6FT/00.48M
 Nikolski  AK              52.9N  168.9W  1156UTC   01.4FT/00.41M
 French Frigate Shoals     23.5N  166.2W  1211UTC   01.5FT/00.45M
 St Paul Is.  AK           57.1N  170.3W  1225UTC   02.0FT/00.61M
Time - Time of measurement.
Amp. - 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).

TSUNAMI AMPLITUDES ARE EXPECTED TO PEAK TWO TO THREE HOURS AFTER INITIAL ARRIVAL ALONG THE NORTH AMERICAN COAST. FORECAST TSUNAMI AMPLITUDES ARE AVAILABLE ON THE WCATWC WEB SITE WCATWC.ARH.NOAA.GOV.
Tsunamis can be dangerous waves that are not survivable. Wave heights are amplified by irregular shoreline and are difficult to forecast. Tsunamis often appear as a strong surge and may be preceded by a receding water level. Mariners in water deeper than 600 feet should not be affected by a tsunami. Wave heights will increase rapidly as water shallows. Tsunamis are a series of ocean waves which can be dangerous for several hours after the initial wave arrival. DO NOT return to evacuated areas until an all clear is given by local civil authorities.

Pacific coastal regions outside California, Oregon, Washington, British Columbia, and Alaska should refer to the Pacific Tsunami Warning Center messages for information on the event.

This message will be updated in 60 minutes or sooner if the situation warrants. The tsunami message will remain in effect until further notice. For further information stay tuned to NOAA Weather Radio, your local TV or radio stations, or see the WCATWC web site.

Link to Standard Warning Message
Link to Public Warning Message
Link to XML/CAP Message
Link to Printable Message



Tsunami Warning Statement for U.S. West Coast states, British Columbia, and Alaska
Today, March 11, 2011, 3 hours ago | wcatwc@noaa.gov (WCATWC)
To: U.S. West Coast, Alaska, and British Columbia coastal regions
From: NOAA/NWS/West Coast and Alaska Tsunami Warning Center
Subject: Tsunami Warning and Advisory #7 issued 03/11/2011 at 3:39AM PST

The tsunami warning and advisory regions have not changed. More tsunami observations are included.

The Tsunami Warning continues in effect for the coastal areas of California and Oregon from Point Concepcion, California to the Oregon-Washington border.

The Tsunami Warning continues in effect for the coastal areas of Alaska from Amchitka Pass, Alaska (125 miles W of Adak) to Attu, Alaska.

The Tsunami Advisory continues in effect for the coastal areas of California from the California-Mexico border to Point Concepcion, California.

The Tsunami Advisory continues in effect for the coastal areas of Washington, British Columbia and Alaska from the Oregon-Washington border to Amchitka Pass, Alaska (125 miles W of Adak).

A Tsunami Warning means that all coastal residents in the warning area who are near the beach or in low-lying regions should move immediately inland to higher ground and away from all harbors and inlets including those sheltered directly from the sea. Those feeling the earth shake, seeing unusual wave action, or the water level rising or receding may have only a few minutes before the tsunami arrival and should move immediately. Homes and small buildings are not designed to withstand tsunami impacts. Do not stay in these structures.

All residents within the warned area should be alert for instructions broadcast from their local civil authorities. A tsunami has been recorded.

A Tsunami Advisory means that a tsunami capable of producing strong currents or waves dangerous to persons in or very near the water is expected. Significant, widespread inundation is not expected for areas under an advisory. Currents may be hazardous to swimmers, boats, and coastal structures and may continue for several hours after the initial wave arrival.

At 9:46 PM Pacific Standard Time on March 10, an earthquake with preliminary magnitude 8.9 occurred near the east coast of Honshu, Japan . (Refer to the United States Geological Survey for official earthquake parameters.) This earthquake has generated a tsunami which could cause damage to coastal regions in a warning or advisory. Estimated tsunami arrival times and maps along with safety rules and other information can be found on the WCATWC web site.

Measurements or reports of tsunami activity:


 Location                   Lat.   Lon.    Time        Amplitude ------------------------  -----  ------  -------     -----------
 Shemya  AK                52.7N  174.1E  1038UTC   03.5FT/01.07M
 Adak  AK                  51.9N  176.6W  1112UTC   01.5FT/00.46M
 Boso  Japan               34.8N  140.8E  0600UTC   02.5FT/00.75M
 Naha  Japan               26.2N  127.7E  1023UTC   01.5FT/00.46M
 Ofunato  Japan            39.0N  141.8E  0603UTC   10.7FT/03.25M
 Omaezaki  Japan           34.6N  138.2E  0809UTC   04.6FT/01.39M
 Tokai  Japan              33.8N  137.6E  0649UTC   00.8FT/00.23M
 Tosashimizu  Japan        32.8N  132.9E  0753UTC   03.0FT/00.91M
 Kwajalein  Marshall Isl    8.7N  167.7E  1049UTC   01.0FT/00.30M
 Midway Is.  USA           28.2N  177.4W  1044UTC   05.1FT/01.55M
 Wake Is.  USA             19.3N  166.6E  0918UTC   01.7FT/00.52M
 Legaspi  Philippines      13.2N  123.8E  1020UTC   01.1FT/00.32M
Time - Time of measurement.
Amp. - 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).

TSUNAMI AMPLITUDES ARE EXPECTED TO PEAK TWO TO THREE HOURS AFTER INITIAL ARRIVAL ALONG THE NORTH AMERICAN COAST. FORECAST TSUNAMI AMPLITUDES ARE AVAILABLE ON THE WCATWC WEB SITE WCATWC.ARH.NOAA.GOV.
Tsunamis can be dangerous waves that are not survivable. Wave heights are amplified by irregular shoreline and are difficult to forecast. Tsunamis often appear as a strong surge and may be preceded by a receding water level. Mariners in water deeper than 600 feet should not be affected by a tsunami. Wave heights will increase rapidly as water shallows. Tsunamis are a series of ocean waves which can be dangerous for several hours after the initial wave arrival. DO NOT return to evacuated areas until an all clear is given by local civil authorities.

Pacific coastal regions outside California, Oregon, Washington, British Columbia, and Alaska should refer to the Pacific Tsunami Warning Center messages for information on the event.

This message will be updated in 60 minutes or sooner if the situation warrants. The tsunami message will remain in effect until further notice. For further information stay tuned to NOAA Weather Radio, your local TV or radio stations, or see the WCATWC web site.

Link to Standard Warning Message
Link to Public Warning Message
Link to XML/CAP Message
Link to Printable Message




Offline Downlinerz2

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Re: Watch just issue for Alaska and West Coast
« Reply #9 on: March 11, 2011, 11:22:35 AM »
John,
    Thanks for keeping us informed on what is going on.  As I watch FOX news right now they are talking about water levels rising near Northern California border.
      Take care,
         Mark

Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #10 on: March 11, 2011, 03:58:49 PM »
Tidal Chart for Crescent City showing  2.5 meter wave.

http://tidesandcurrents.noaa.gov/cgi-bin/tsunami_graphload.cgi?stnid=9419750&name=Crescent City


John

Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #11 on: March 11, 2011, 04:00:43 PM »
 For the  height of Tsunami wave on the charts read the height from the zero line to peak  not from trough to cresst like one would do for normal wave height.

John

Offline scottm

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Re: Watch just issue for Alaska and West Coast
« Reply #12 on: March 11, 2011, 05:28:58 PM »
Wow, i was watching the video from that quake, those poor people, my heart goes out to them. They said that was the 5th largest quake ever recorded. God be with them.

Scott



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Re: Watch just issue for Alaska and West Coast
« Reply #13 on: March 11, 2011, 06:07:59 PM »
Are there any updates on the U.S.'s west coast from the tsunami? Last I heard was Hawaii got a little bit from it and warnings going out to the west coast, especially Crescent City then all got quite. I'm taking it as good news, not hearing any more alerts.

Offline bellyflop

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Re: Watch just issue for Alaska and West Coast
« Reply #14 on: March 11, 2011, 06:37:37 PM »
Just received this at 3:04PM PST from the California OES.

"     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      
         
   Instruction:      
   A TSUNAMI WAS GENERATED AND HAS CAUSED DAMAGE TO THE NORTHERN AND CENTRAL CALIFORNIA COAST. PERSONS AT THE COAST SHOULD BE ALERT TO INSTRUCTIONS FROM LOCAL EMERGENCY OFFICIALS. RECOMMENDED ACTIONS... A TSUNAMI HAS BEEN GENERATED WHICH IS EXPECTED TO IMPACT THE ADVISORY REGIONS LISTED IN THE HEADLINE. PERSONS IN LOW-LYING COASTAL AREAS SHOULD BE ALERT TO INSTRUCTIONS FROM THEIR LOCAL EMERGENCY OFFICIALS. EVACUATIONS ARE ONLY ORDERED BY EMERGENCY RESPONSE AGENCIES. PERSONS IN TSUNAMI ADVISORY COASTAL AREAS SHOULD MOVE OUT OF THE WATER...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 WATER IS IMMINENT OR EXPECTED. SIGNIFICANT WIDESPREAD INUNDATION IS NOT EXPECTED FOR AREAS IN AN ADVISORY. TSUNAMIS ARE A SERIES OF WAVES POTENTIALLY DANGEROUS SEVERAL HOURS AFTER INITIAL ARRIVAL TIME.       
         
   Area: SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-SAN FRANCISCO-COASTAL NORTH BAY... INCLUDING POINT REYES NATIONAL SEASHORE-NORTH BAY INTERIOR VALLEYS-SAN FRANCISCO BAY SHORELINE-SAN FRANCISCO PENINSULA COAST-SOUTHERN MONTEREY BAY AND BIG SUR COAST-NORTHERN MONTEREY BAY-       
   Affected Counties or parts of: San Francisco, Santa Cruz, San Mateo, Marin, Monterey, Contra Costa, Napa, San Benito, Sonoma, Santa Clara, Alameda      
   Sent: 2011-03-11T15:03:27-08:00      
   Original Sender: KMTR@nwws.oes.ca.gov      
   From: NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA"

Offline Downlinerz2

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Re: Watch just issue for Alaska and West Coast
« Reply #15 on: March 11, 2011, 06:52:10 PM »
Wow, i was watching the video from that quake, those poor people, my heart goes out to them. They said that was the 5th largest quake ever recorded. God be with them.
Scott
   I believe that the Alaska quake back in the '60's was one of those that was bigger.
      Mark

Offline Scalphunter

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Re: Watch just issue for Alaska and West Coast
« Reply #16 on: March 11, 2011, 08:08:37 PM »
Tsunami warning here in effect. The latest issued

Warning Description: Tsunami Advisory

Warning Date: 4:55 PM PST on March 11, 2011

WarningSum:...The Tsunami Advisory Continues In Effect For The Coastal
   Areas Of California - Oregon - Washington - British
   Columbia And Alaska From The California-Mexico Border To
   Attu Alaska...

Warning Message:Persons in tsunami advisory coastal areas should move out of
the water... 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
water is imminent or expected. Significant widespread inundation
is not expected for areas in an advisory. Tsunamis are a series of
waves potentially dangerous several hours after initial arrival
time.



Looking at the tidal stations I posted from the Chain they are still recording waves  coming from japan. The tidal charts  show osculation instead of an normal rise and fall.

Offline SLOweather

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Re: Watch just issue for Alaska and West Coast
« Reply #17 on: March 11, 2011, 08:13:33 PM »
Are there any updates on the U.S.'s west coast from the tsunami? Last I heard was Hawaii got a little bit from it and warnings going out to the west coast, especially Crescent City then all got quite. I'm taking it as good news, not hearing any more alerts.

Crescent City Harbor got smacked pretty bad, Santa Cruz a few loose boats, broken moorings etc (est damage 10 megadollars to the harbor itself), Morro Bay one boat damaged I believe, one person taking pictures up in Humboldt swept away...

We had lots of coastal evacuations (beach campers, low lying schools, stuff like that...)

Offline SlowModem

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Re: Watch just issue for Alaska and West Coast
« Reply #18 on: March 11, 2011, 08:20:27 PM »
By The Associated Press The Associated Press – Fri Mar 11, 11:35 am ET

• March 11, 2011: A magnitude 8.9 quake strikes off the northeast coast of Japan, sending a tsunami across the Pacific and killing a still-undetermined number of people.

• December 2004: An Indian Ocean tsunami, triggered by a magnitude 9.0 earthquake, kills 230,000 in a dozen countries.

• March 1964: A 9.2 magnitude earthquake in Prince William Sound, Alaska, and the resulting tsunami kill 131 people.

• May 1960: A magnitude 9.5 earthquake in southern Chile and ensuing tsunami kill at least 1,716 people.

• November 1952: A magnitude 9.0 quake in Kamchatka causes damage but no reported deaths despite setting off 30-foot (9.1-meter) waves in Hawaii.

___

Sources: U.S. Geological Survey, Incorporated Research Institutions for Seismology and WHO's International Disaster Database
Greg Whitehead
Ten Mile, TN USA

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Re: Watch just issue for Alaska and West Coast
« Reply #19 on: March 11, 2011, 08:21:29 PM »
Quote
I believe that the Alaska quake back in the '60's was one of those that was bigger.

 Second largest was the Good friday quake in 1964  and it also cause  high amount of damage down in Crescent City, CA due to the direction  that  crescent City harbor opens to the sea.

 Chile  is the largest with 9.5 then Alaska Good Friday at 9.2 to 9.4 depending on who's survey you want to belive. Areas in Prince William sound and Cook Inlet subsides  or rose as much as 40 feet. You are going to see that also with this one in Japan  with subsiding along the coastal plain.

John

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Re: Watch just issue for Alaska and West Coast
« Reply #20 on: March 11, 2011, 10:25:38 PM »
Warning for SE Alaska  has been cancel  but yet  remain for the Aleutian Chain. Will pass along more info as I get it.

 John

 

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Re: Watch just issue for Alaska and West Coast
« Reply #21 on: March 11, 2011, 10:44:19 PM »
 Here an link show earthquake activity in Sendi region  to many to count  just for today on this  small of  an map.

http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/140_35.php

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Re: Watch just issue for Alaska and West Coast
« Reply #22 on: March 12, 2011, 12:41:36 AM »
Quote
I believe that the Alaska quake back in the '60's was one of those that was bigger.
   Second largest was the Good friday quake in 1964  and it also cause  high amount of damage down in Crescent City, CA due to the direction  that  crescent City harbor opens to the sea.
   Chile  is the largest with 9.5 then Alaska Good Friday at 9.2 to 9.4 depending on who's survey you want to belive. Areas in Prince William sound and Cook Inlet subsides  or rose as much as 40 feet. You are going to see that also with this one in Japan  with subsiding along the coastal plain.
John
    I saw a video on the news today that showed a road. Right down the middle of the road there was a split and one lane was thrust up about 3.5-feet higher than the other. It reminded me of a picture I saw from the Alaskan quake of a road that had sunk about 15-feet.  It would be incredible to watch a video of something like that happening in real time. Scary too!
      Mark

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Re: Watch just issue for Alaska and West Coast
« Reply #23 on: March 12, 2011, 12:55:41 AM »
I watched a special on TV tonight about the pacific sea floor. They explained how the underwater mountains and ravines were shaped just right to bottleneck, or "funnel" excessive water flow from the deep pacific to the California/Oregon border area. It showed some nice graphs and underwater maps which were really interesting. They then showed animations in relation to to the sea floor structure as to how and why Crescent City got hit so hard, even though Crescent City was supposedly thought to withstand the brutal pacific waves/current/wind etc., (as it normally does). They explained the difference in top-water (i.e. pineapple express) currents into that area vs. deep water (i.e. tsunami) currents.

It was really interesting stuff. It was some special that aired because of the earthquake obviously. i missed the first 15-20 minutes of the program, i'd like to see it in its entirety. If anyone else watched it, and caught the name and channel of it, please let me know, and thanks i appreciate it.


Scott



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Re: Watch just issue for Alaska and West Coast
« Reply #24 on: March 12, 2011, 05:39:53 PM »

Summary of Tsunami Activity for the West Coast

http://ucweather.org/tsunamisumm.php

 

anything