Posted: 28 February 2010
UPDATE 4: Tsunami warning downgraded but caution advised
UPDATE No.4 1530hrs: Northland’s Civil Defence representatives are urging people in the region’s coastal areas to continue to err on the side of caution as the national response to today’s tsunami eases off.
Based on scientific advice, the Ministry of Civil Defence & Emergency Management at 2.55PM downgraded a national tsunami warning to an ‘advisory’ level.
However, Northland is one of a number of regions around New Zealand still experiencing ongoing fluctuations in sea levels and significant tidal surges linked to a tsunami caused by a large earthquake off Chile.
Northland Civil Defence Emergency Management (CDEM) Group spokesman Tony Phipps says scientists have indicated large waves and strong tidal surges could continue in Northland – and some other parts of the country - until well into the evening and possibly into tomorrow.
“The Tsunami Experts Panel advises that surges and rapid sea level changes could continue for up to 24 hours after the initial wave arrivals, which in Northland occurred about 10am today. 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.”
Mr Phipps says with that in mind, Northland officials will continue to recommend a precautionary approach in the North.
“We’re asking Northlanders to err on the side of caution and be aware that there still may be unusual and unexpected tidal movements and surges in coastal areas, especially along the East Coast and the West Coast from Cape Reinga to Ahipara.”
Mr Phipps says officials will continue to monitor the situation and release new information if required.