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New Zealand Climate Update 133 – July 2010

What happened in June, how our climate outlook for the previous three months turned out, global and local sea temperatures, and our outlook for July to September

Current Climate - June 2010

June 2010 was a very wet month for most regions of the country, with active lows originating over the Tasman Sea affecting the country during both the first and last week of the month. Double normal June rainfall was recorded in Marlborough and parts of the Bay of Plenty and Waikato.

Global Setting – June 2010

The tropical Pacific is presently in an ENSO-neutral state, bordering on La Niña conditions. A La Niña is likely to be in place by September 2010. During July-September, mean sea level pressures are likely to be above normal over the North Island and to the north of the country, with stronger than average westerly flow over the South Island and south of the country.

Outlook - July to September 2010

During July-September, mean sea level pressures are likely to be above normal over the North Island and to the north of the country, with a westerly flow anomaly over the South Island and south of the country. Temperatures are likely to be above average in most regions. Rainfall is likely to be normal or below normal over the North Island and normal or above normal over the South Island.

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