Tsunami Watch issued

[TomK]

I'll try an give an update later. Latest is this:

http://forecast.weather.gov/wwamap/wwatxtget.php?cwa=hfo&wwa=tsunami%20watch

BULLETIN
TSUNAMI MESSAGE NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
1143 PM HST MON JAN 22 2018

TO - EMERGENCY MANAGEMENT IN THE STATE OF HAWAII

SUBJECT - TSUNAMI WATCH

A TSUNAMI WATCH IS ISSUED FOR THE STATE OF HAWAII EFFECTIVE AT
1143 PM HST.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 1132 PM HST 22 JAN 2018
COORDINATES - 56.0 NORTH 149.2 WEST
LOCATION - GULF OF ALASKA
MAGNITUDE - 8.0 MOMENT

EVALUATION

BASED ON ALL AVAILABLE DATA A TSUNAMI MAY HAVE BEEN GENERATED BY
THIS EARTHQUAKE THAT COULD BE DESTRUCTIVE ON COASTAL AREAS EVEN
FAR FROM THE EPICENTER. AN INVESTIGATION IS UNDERWAY TO DETERMINE
IF THERE IS A TSUNAMI THREAT TO HAWAII.

IF TSUNAMI WAVES IMPACT HAWAII THE ESTIMATED EARLIEST ARRIVAL OF
THE FIRST TSUNAMI WAVE IS

0426 AM HST TUE 23 JAN 2018

FURTHER MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS
WARRANT UNTIL THE THREAT TO HAWAII HAS PASSED.

[PaulW]

Thanks Tom.! No news of tsunamis so far on areas closer to the quake.
I think the magnitude was downgraded to 7.9. We usually only need to worry about 8+ from that far away.

[TomK]

From what I can see right now I think it's the other way round, it's been upgraded from a 7.9 to an 8.2. Been busy informing all the people I need to as part of the job. Hopefully, Ige remembers his password.

[TomK]

OK, stand down. No threat to Hawaii.

TSUNAMI MESSAGE NUMBER 3
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
1102 UTC TUE JAN 23 2018

...PTWC FINAL TSUNAMI THREAT MESSAGE...


**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE
UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS
MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF
ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED
INFORMATION.

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THE TSUNAMI FORECAST IS UPDATED IN THIS MESSAGE.


PRELIMINARY EARTHQUAKE PARAMETERS
---------------------------------

* MAGNITUDE 7.9
* ORIGIN TIME 0932 UTC JAN 23 2018
* COORDINATES 56.0 NORTH 149.2 WEST
* DEPTH 19 KM / 12 MILES
* LOCATION GULF OF ALASKA


EVALUATION
----------

* NOTE REVISED EARTHQUAKE MAGNITUDE

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.9 OCCURRED IN
THE GULF OF ALASKA AT 0932 UTC ON TUESDAY JANUARY 23 2018.

TSUNAMI THREAT FORECAST...UPDATED
---------------------------------

* THERE IS NO TSUNAMI THREAT FOR AREAS COVERED UNDER
THIS BULLETIN.

RECOMMENDED ACTIONS
-------------------

* REMAIN OBSERVANT AND EXERCISE NORMAL CAUTION NEAR THE SEA.


TSUNAMI OBSERVATIONS
--------------------

* THE FOLLOWING ARE TSUNAMI WAVE OBSERVATIONS FROM COASTAL
AND/OR DEEP-OCEAN SEA LEVEL GAUGES AT THE INDICATED
LOCATIONS. THE MAXIMUM TSUNAMI HEIGHT IS MEASURED WITH
RESPECT TO THE NORMAL TIDE LEVEL.

GAUGE TIME OF MAXIMUM WAVE
COORDINATES MEASURE TSUNAMI PERIOD
GAUGE LOCATION LAT LON (UTC) HEIGHT (MIN)
-------------------------------------------------------------
DART 46403 52.6N 156.9W 1024 0.03M/ 0.1FT 08
DART 46410 57.6N 143.8W 1008 0.04M/ 0.1FT 06
DART 46409 55.3N 148.5W 0944 0.12M/ 0.4FT 04


NEXT UPDATE AND ADDITIONAL INFORMATION
--------------------------------------

* THIS WILL BE THE FINAL STATEMENT ISSUED FOR THIS EVENT UNLESS
NEW INFORMATION IS RECEIVED OR THE SITUATION CHANGES.

* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV/EARTHQUAKES -ALL LOWER CASE-.

* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
PTWC.WEATHER.GOV AND AT WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
PTWC.WEATHER.GOV.

* COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON...
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT NTWC.ARH.NOAA.GOV.

[KeaauRich]

The watch was just cancelled. Go back to bed

http://ptwc.weather.gov/ptwc/text.php?id...01.23.1110

[PaulW]

Thanks Tom, was looking for that, couldn't find it. Do you get those by email? If so, where can I sign up.

[TomK]

I didn't get the watch by email. I just happened to be looking at the Honolulu NWS site because of the thunderstorms when the watch was issued. I did check my phone afterward and saw Hawaii civil defense had issued a text.

After that, I just kept checking http://ptwc.weather.gov/

[leilanidude]

saw Hawaii civil defense had issued a text.
------------
Which they do, even for fallen trees on a road... usually only in the middle of the night.

[TomK]

Paul - I had a dig around on the PTWC site to see if there's an email subscription service. It appears not.

http://ptwc.weather.gov/ptwc/subscribe.php

They link to an "ITIC" site which appears to be broken and all I could find was a something to do with Indian Ocean tsunamis.

PS. Just found this. It includes Pacific tsunamis. I can't verify how trustworthy it is.

https://lists.unesco.org/wws/subscribe/t...mation-ioc

[PaulW]

Danke!