Tsunami alert for New Zealand after massive Chile quake
Sunday, February 28, 2010
Sunday, February 28, 2010 - 5pm
#ChileQuake National Advisory:Tsunami Threat to NZ Update2217:55HRS NZDT 28 Feb 2010
Monitored tidal gauges continue to show wave action of up to 1 metre on the east coast of the North and South Islands and at the Chatham Islands. There is no indication of any decrease in wave amplitude.
Scientific advice is that there is still a likelihood of surges and rapid sea level changes over the 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. The Ministry of Civil Defence& Emergency Management will keep the advisory in place overnight and will review this at 0800 hours on Monday 1 March 2010.
Strong currents could still be expected in harbours and restricted waterways. The Chatham Islands and Banks Peninsula could still expect wave heights of between 1 and 3 metres. The 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 remains.
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 and will discuss the situation at 0800 hours tomorrow to determine when a cancellation can be issued. The NCMC will stand down at 1800 hours and the Ministry of Civil Defence & Emergency Management will revert to Duty arrangements overnight. The NCMC will reopen at 0730 hours on Monday 1 March 2010.
This advisory has been issued to all local civil defence authorities, emergency services, other agencies and media.
Sunday, February 28, 2010
Tsunami alert for New Zealand after massive Chile quake
Banks Peninsula ready for evacuation
NZPA Last updated 07:01 28/02/2010
Civil Defence NZ - Latest UpdatesSTUFF.co.nz -- LATEST: The first wave of a tsunami, created by an 8.8 magnitude earthquake in Chile, is expected to reach the Chatham Islands by 7.05am.
The quake hit 325 kilometers southwest of Santiago, at a depth of 35 kilometers at 3:34 am local time (6.34pm NZ Time), the US Geological Survey reported.
A wave measuring 2.34 metres was recorded near Chile and Tsunami warnings were issued over a wide area.
The New Zealand Ministry of Civil Defence and Emergency Management (CDEM) said areas of land could be threatened on the Chatham Islands and Banks Peninsula, while waves of less than 1 metre were likely for the entire east coast of New Zealand.
Canterbury CDEM group said residents in low lying areas of Banks Peninsula bays, where the tsunami was expected to arrive about 8.30am, should be prepared for an evacuation.
"People need to be ready to move to safety by 8am and may not be able to return for at least 24 hours."
People on coastal areas were asked to stay off beaches, avoid the water (including rivers and estuaries) and refer to media or their local Civil Defence authorities for updates.
The ministry asked that people avoid calling 111 for information, reserving that number for emergencies.
Estimates show the first wave reaching the east coast of the North Island by 8am ahead of the main centres of Wellington (8.25am), Christchurch (9.05am) and Auckland (10.22am).
"The first wave may arrive later and may not be the largest. Strong currents and unusual tidal effects may continue for several hours," the ministry said.
"Based on historical events it is expected that the greatest wave heights could occur between 6 and 12 hours after the initial arrivals."