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Old 21-08-2018, 16:05   #1
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tsunami warning grenada, trinidad

source https://ptwc.weather.gov/?region=3

000
WECA41 PHEB 212154
TSUCAX

TSUNAMI MESSAGE NUMBER 2
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
2153 UTC TUE AUG 21 2018

...TSUNAMI THREAT MESSAGE...


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

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE
UNESCO/IOC TSUNAMI AND OTHER COASTAL HAZARDS WARNING SYSTEM FOR
THE CARIBBEAN AND ADJACENT REGIONS 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 *****


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

* MAGNITUDE 7.4
* ORIGIN TIME 2132 UTC AUG 21 2018
* COORDINATES 10.4 NORTH 62.7 WEST
* DEPTH 86 KM / 54 MILES
* LOCATION NEAR THE COAST OF VENEZUELA


EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.4 OCCURRED
NEAR THE COAST OF VENEZUELA AT 2132 UTC ON TUESDAY AUGUST 21
2018.

* BASED ON THE PRELIMINARY EARTHQUAKE PARAMETERS... HAZARDOUS
TSUNAMI WAVES ARE POSSIBLE FOR COASTS LOCATED WITHIN 300 KM
OF THE EARTHQUAKE EPICENTER.


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

* HAZARDOUS TSUNAMI WAVES FROM THIS EARTHQUAKE ARE POSSIBLE
WITHIN 300 KM OF THE EPICENTER ALONG THE COASTS OF

GRENADA... TRINIDAD TOBAGO AND VENEZUELA



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

* GOVERNMENT AGENCIES RESPONSIBLE FOR THREATENED COASTAL AREAS
SHOULD TAKE ACTION TO INFORM AND INSTRUCT ANY COASTAL
POPULATIONS AT RISK IN ACCORDANCE WITH THEIR OWN
EVALUATION... PROCEDURES AND THE LEVEL OF THREAT.

* PERSONS LOCATED IN THREATENED COASTAL AREAS SHOULD STAY ALERT
FOR INFORMATION AND FOLLOW INSTRUCTIONS FROM NATIONAL AND
LOCAL AUTHORITIES.


ESTIMATED TIMES OF ARRIVAL
--------------------------

* ESTIMATED TIMES OF ARRIVAL -ETA- OF THE INITIAL TSUNAMI WAVE
FOR PLACES WITHIN THE REGION IDENTIFIED WITH A POTENTIAL
TSUNAMI THREAT. ACTUAL ARRIVAL TIMES MAY DIFFER AND THE
INITIAL WAVE MAY NOT BE THE LARGEST. A TSUNAMI IS A SERIES
OF WAVES AND THE TIME BETWEEN WAVES CAN BE FIVE MINUTES TO
ONE HOUR.

LOCATION REGION COORDINATES ETA(UTC)
------------------------------------------------------------
SAINT GEORGES GRENADA 12.0N 61.8W 2207 08/21
PIRATES BAY TRINIDAD TOBAGO 11.3N 60.6W 2239 08/21
CUMANA VENEZUELA 10.5N 64.2W 2306 08/21
PORT OF SPAIN TRINIDAD TOBAGO 10.6N 61.5W 2308 08/21
PORLAMAR VENEZUELA 10.9N 63.8W 0156 08/22


POTENTIAL IMPACTS
-----------------

* A TSUNAMI IS A SERIES OF WAVES. THE TIME BETWEEN WAVE CRESTS
CAN VARY FROM 5 MINUTES TO AN HOUR. THE HAZARD MAY PERSIST
FOR MANY HOURS OR LONGER AFTER THE INITIAL WAVE.

* IMPACTS CAN VARY SIGNIFICANTLY FROM ONE SECTION OF COAST TO
THE NEXT DUE TO LOCAL BATHYMETRY AND THE SHAPE AND ELEVATION
OF THE SHORELINE.

* IMPACTS CAN ALSO VARY DEPENDING UPON THE STATE OF THE TIDE AT
THE TIME OF THE MAXIMUM TSUNAMI WAVES.

* PERSONS CAUGHT IN THE WATER OF A TSUNAMI MAY DROWN... BE
CRUSHED BY DEBRIS IN THE WATER... OR BE SWEPT OUT TO SEA.


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

* THE NEXT MESSAGE WILL BE ISSUED IN ONE HOUR... OR SOONER IF
THE SITUATION WARRANTS.

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

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

* COASTAL REGIONS OF THE US GULF COAST... US EAST COAST... AND
THE MARITIME PROVINCES OF CANADA SHOULD REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT NTWC.ARH.NOAA.GOV.
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Old 21-08-2018, 16:07   #2
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Re: tsunami warning grenada, trinidad

Bad news hope the warning comes to nothing after that 7.4 quake the land damages will be bad enough by themselves
Thanks for posting
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Old 21-08-2018, 16:20   #3
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Re: tsunami warning grenada, trinidad

http://ptwc.weather.gov/ptwc/text.ph...018.08.21.2217

Looks like the risk is gone without turning into reality.
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Old 21-08-2018, 16:21   #4
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Re: tsunami warning grenada, trinidad

The U.S. Pacific Tsunami Center said the quake could cause small tsunami waves along the coast near the epicenter, 23 miles (37 km) southwest of the town of Carupano.

USGS Geophysicist Jessica Turner said the quake’s depth, 76.5 miles (123.11 km) below the surface, would dampen some of the shaking but not enough to prevent damage.

“A 7.3 magnitude quake is going to cause some damage particularly as in this area structures are vulnerable. The Earth is able to absorb some of the energy, but a 7.3 quake produces a lot of energy,”
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Old 21-08-2018, 16:32   #5
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Re: tsunami warning grenada, trinidad

Montanan see my link above looks like they canceled this.
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Old 21-08-2018, 16:41   #6
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Re: tsunami warning grenada, trinidad

Quote:
Originally Posted by Franziska View Post
Montanan see my link above looks like they canceled this.
friends in grenada confirm that they have not had any tsunami waves that by now after experinceng strong quake would have arrived
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Old 21-08-2018, 16:54   #7
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Re: tsunami warning grenada, trinidad

Quote:
Originally Posted by atoll View Post
friends in grenada confirm that they have not had any tsunami waves that by now after experinceng strong quake would have arrived
that is good news no Tsunami
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Old 22-08-2018, 08:45   #8
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Re: tsunami warning grenada, trinidad

With all the big quakes happening, it would be good to have a plan...

https://earthquake.usgs.gov/earthquakes/map/
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