Why all the hot weather for chch???
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For today's weather discussion head to: New Zealand Weather & Climate
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Why all the hot weather for chch???
Okay, this summer has to be a record, have we ever had a summer like this?? and what is the reason, and will it continue into March?
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Re: Why all the hot weather for chch???
Haven't got monthly temp means for Ch'ch sites to hand, so can't help with that one. The sunniest summer was 2002/3 (802 hours), but temps. were barely average, from memory. For warmth alone I suspect that 1934/5 would be well up the list (hottest ever summer for NZ overall), with 1961/2, 1977/8, 1984/5 and 1997/8 probably prominent.
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Re: Why all the hot weather for chch???
Hot weather is Canterbury comes via the fohn effect. Why such a persistent fohn effect I'm not sure. Next weekend looks hot for Canterbury and much of NZ.
Last edited by NZstorm on Mon 02/02/2009 20:05, edited 1 time in total.
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Re: Why all the hot weather for chch???
I think you missed RWood that gopolks was refering to CHCH having a hot summer
- TonyT
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Re: Why all the hot weather for chch???
Whilst thats true, this summer has not seen the "wall to wall" nor'westers which some summers bring - I think it has more to do with persistent northerly flow over the region, and in fact pretty much all of the country. We have had a lot of anticyclones lying over or just east of the country, and relatively few over the Tasman Sea. This has meant less oomph in the SW changes and pretty rapid transition from cool SW to warm N'ly quarter airflow, with the N'ly side of the systems seeming to last for many days in a row.NZstorm wrote:Hot weather is Canterbury comes via the fohn effect. Why such a persistent fohn effect I'm not sure. Next weekend looks hot for Canterbury and much of NZ.
We certainly havent had a predominance of NW winds over the last two months, there have been if anything more days with NE than usual, but they have been warm, and often light till the afternoons, and that has meant quite a few days with maximums reached early in the day in pretty light wind conditions, and thats whats probably unusual for this summer.
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Re: Why all the hot weather for chch???
Thats a very good point made Tony and i agree with you. Several days this summer (since xmas especially) have seen plenty of clear skies and very little wind in the morning with temps peaking quite often between 29-32 degrees before the late morning or early afternoon northeasterly kicks in and freshens things up dropping the temperature a good 5-7 degrees to around that 25 degree mark.
Reporting Live from Southern Christchurch
Leighton Thomas
2014 Rainfall: Jan: 21mm Feb: 76mm March: 170mm April: 201mm YTD: 468mm
Leighton Thomas
2014 Rainfall: Jan: 21mm Feb: 76mm March: 170mm April: 201mm YTD: 468mm
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Re: Why all the hot weather for chch???
Thanks for the info. Im not complaining its great going to the beach, not so great being stuck in a office.
Re: Why all the hot weather for chch???
It's worth noting also that the northwesterly has been reaching the surface despite the fronts usually becoming stationary, or very weak, over the Otago/Southland region. This has kept bands of high and mid level cloud away from Christchurch in general, allowing the sun to push up the already hot nor'wester influenced temperatures.
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Re: Why all the hot weather for chch???
I hadn't missed it - the numbers I was quoting were for Ch'ch, but I don't have detailed seasonal temps for there on hand, as I said.Manukau heads observer wrote:I think you missed RWood that gopolks was refering to CHCH having a hot summer
If the reference had been to NZ mean temps, a comparison could already be made. Dec & Jan were both reasonably warm, but far from record-breaking. The warmest summer in relatively recent times was 1998/9 (4th highest in the temperature series).
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Re: Why all the hot weather for chch???
It would be useful to see pressure anomaly charts in NIWA websites somewhere, then (say) the differences between this January and Jan 2008 would be more obvious. Jan 2008 was 0.7C warmer than this one, for the country as a whole. In the south, Otago and Southland were much cloudier this time (record sun in 2008) with above normal rainfall in Southland. Around Wellington there more more NNW/NW flows this time as opposed to N/NNE/NE in 2008.