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Advisory 16 - Tsunami Warning downgraded
National Advisory: Tsunami Warning Downgraded to Advisory
No: 16
Issued at
1455 hours on 28 February 2010.
Issued by
the Ministry of Civil Defence & Emergency Management
(MCDEM).
A tsunami advisory is in effect for New
Zealand:
The tsunami advisory will remain in effect
until a cancellation message is issued by MCDEM.
An
earthquake has occurred with these parameters:
Origin
time: 0634Z 27 FEB 2010
NZ time: 1934 NZDT 27 FEB
2010
Co-ordinates: 36.1 SOUTH 72.6 WEST
Depth:
55KM
Location: NEAR COAST OF CENTRAL CHILE
Magnitude:
8.8
The above magnitude is provisional and may be
increased or decreased as more seismic data becomes
available.
Summary:
The Pacific Tsunami Warning Centre (PTWC) has issued a Tsunami Cancellation in response to the above earthquake. However, based on scientific advice, the Ministry of Civil Defence & Emergency Management has downgraded the national warning to an advisory. There is still a likelihood of surges and rapid sea level changes to continue for up to 24 hours after the initial wave arrivals. Wave heights could be larger than what we have currently experienced but within the threat levels and wave height estimates that have been previously forecast. Strong currents are expected in harbours and restricted waterways. The Chatham Islands and Banks Peninsula could still expect wave heights of between 1 and 3 metres. This represents risks to people in boats and on beaches for coastal communities in the east coast of the North and South Island and particularly Chatham Islands and Banks Peninsula.
Only messages issued by MCDEM represent the official warning status for New Zealand. Local civil defence authorities may supplement these messages by applying a local threat assessment.
People in coastal areas should:
1. Stay off beaches
2. Stay out of the water
(sea, rivers and estuaries, including boating
activities)
3. Do not go sightseeing
4. Share this
information with family, neighbours and friends
5. Listen
to the radio and/or TV for updates
6. Follow instructions
of your local Civil Defence authorities.
MCDEM and scientific advisors are continuing to review the situation to determine when a cancellation can be issued.
ENDS
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