Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


Historical Christmas Day weather

Christmas is coming! From the records, what chance is there of a sunny, or stormy, Christmas Day?

NIWA’s Climate Scientist Georgina Griffiths says, “Historically, Christmas Day has a mixed reputation.

“Looking at the last decade, Christmas Day weather has been settled and dry for Auckland, Hamilton, Tauranga and Christchurch, in about two out of three years, on average. For Dunedin and Wellington, the odds of a dry Christmas Day have typically been closer to 50:50.

“New Zealand has enjoyed beautiful Christmas Day weather for the last three years. In both 2009 and 2011 a large anticyclone (High) covered the country, and it was extremely sunny, dry and warm in many regions. Notably, Dunedin had an extremely warm Christmas Day in 2009, hitting 32 degrees in a nor’wester. Christmas Day 2010 was also dry in most places, due to an anticyclone over the Tasman Sea, but it was somewhat cooler, due to south-westerly winds.”

Looking back further, however, we can see Christmas Day weather is not always settled.

Christmas Day in 1975, says Griffiths, “was a shocker.” A very large storm off the east coast of the South Island delivered cold southerlies and rain to many parts of the country. Temperatures struggled to reach 10 degrees in Dunedin, and 13 degrees in Christchurch.

Christmas Day in 2007 was wet for all of the main population centres, while Christmas 1973 was extremely wet in Hamilton and Wellington.

During the tropical cyclone season (November – April), on average, one ex-tropical cyclone comes within 550km of New Zealand. Occasionally, tropical visitors come close to the North Island around Christmas Day. Since 1970, there have been five ex-tropical cyclones that have approached the North Island during December – roughly one every eight years, on average. Ex-tropical cyclone Fergus was the most recent December system, affecting the North Island in December 1996. Fergus produced over 300mm of rain in 24 hours to Coromandel, as it tracked southeastwards across the Bay of Plenty.

Christmas Day highlights:

Christmas Day: AucklandHamiltonTaurangaWellingtonChristchurchDunedin
Sunniest:2009 (13.7 hr)2009 (13.6 hr)1996 (13.9 hr)2011 (14.4 hr)2000 (14.9 hr)1988 (12.4 hr)
Wettest:1987 (24 mm)1973 (26 mm)1926 (47 mm)1973 (49 mm)1975 (18.6 mm)1969 (33 mm)
Warmest:1969 (26.6C)1981 (26.8C)1947 (28.2C)1934 (28.7C)1979 (29.6C)2009 (32.0C)


Whatever weather Christmas Day 2012 does bring to your place, NIWA wishes you a safe and happy holiday season.


ENDS

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

Finance: Major Campaign To End "Gross Overtaxation Of Savings"

The campaign – which includes a special web site through which New Zealanders can e-mail their own and other MPs and party leaders – is backed by Age Concern, Consumer NZ, the Financial Services Council and the Taxpayers’ Union. More>>

ALSO:

Scoop Business: Leighton-Led WGP To Build, Manage Transmission Gully

The Wellington Gateway Partnership, led by a unit of ASX-listed Leighton Holdings, has won the $1 billion contract to build the Transmission Gully road north of Wellington. More>>

ALSO:

Gareth Morgan: The Government’s Fresh Water Policy – Revisited

Fresh water quality is the latest area to be in the sights of Gareth Morgan and his research organisation The Morgan Foundation... They found that the fresh water policy was a bit murkier than the Environment Minister let on. More>>

ALSO:

Interest Rates: RBNZ Hikes OCR To 3.5%, ‘Period Of Assessment’ Now Needed

Reserve Bank governor Graeme Wheeler raised the official cash rate as expected, while signalling a pause in rate hikes to assess the impact of moves so far this year. The kiwi dollar sank after Wheeler said its strength was “unjustified” and that the currency could have “a significant fall.” More>>

ALSO:

Fonterra: Canpac Site 'Resize' To Focus More On Paediatrics

Fonterra is looking at realigning its packing operations at Canpac, in the Waikato, to focus more on paediatric nutritionals... The proposed changes could mean around 110 roles may not be required at the site which currently employs 330. More>>

ALSO:

Scoop Business: Postie Plus Brand Gets 2nd Chance With Well-Funded Pepkor

The Postie Plus brand is getting a new lease of life after South Africa’s Pepkor bought the failed retailer’s assets out of administration and said it will use its purchasing power to reduce costs of stock and fatten margins. More>>

ALSO:

Get More From Scoop

 
 
Computer Power Plus

Standards New Zealand

Standards New Zealand
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news