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#3571 - 01/11/2008 19:12 40c weather
norfolk Offline
Weatherzone Addict

Registered: 28/06/2003
Posts: 2951
Loc: Caroline Springs vic.
Hey guys, just a question I was thinking about today that I hope some of you may have an answer for.

Does anyone know the most northerly place in the Northern Hemisphere to register a 40c temperature. And also the most southerly place in the southern hemisphere. Or an approximate area.

I am going to think that it might be somewhere in North America for the northern one and maybe somewhere in South America for the southern one.

Hope to hear some answers.

Tony

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#3572 - 02/11/2008 06:57 Re: 40c weather
David Simpson. Offline
Weatherzone Administrator/Moderator

Registered: 13/10/2002
Posts: 4931
Loc: Tasmania
G'day Tony, Hobart may well be the most southerly place, recording 40.8C on the 4th January, 1976. I haven't checked South America or anywhere else though.

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#3573 - 02/11/2008 07:13 Re: 40c weather
Nev Offline
Weather Freak

Registered: 21/10/2006
Posts: 614
Loc: Waiheke Island, Auckland, NZ
Sorry but I think Rangiora near Christchurch in NZ is probably the best contender.
At 43.31S (Hobart is 42.88S), Rangiora recorded 42.4C on Feb 7, 1973.

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#3574 - 02/11/2008 09:21 Re: 40c weather
Altitude Offline
Member

Registered: 05/10/2005
Posts: 663
Loc: Melbourne
How would NZ get a temp like that?
Thats quite hot for even Southern Australia and we get our hot temps from the desert but NZ...?

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#3575 - 02/11/2008 09:39 Re: 40c weather
Nev Offline
Weather Freak

Registered: 21/10/2006
Posts: 614
Loc: Waiheke Island, Auckland, NZ
The foehn (or fohn) effect on the lee side of the Southern Alps.

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#3576 - 02/11/2008 09:59 Re: 40c weather
TOM1111 Offline
Member

Registered: 27/10/2004
Posts: 2789
Loc: medowie near williamtown-octob...
dodgy reading perhaps aswell

i just couldnt imagine it getting that hot with out a big land mass to support it

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#3577 - 02/11/2008 10:22 Re: 40c weather
Rime Offline
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Registered: 07/06/2001
Posts: 1444
Loc: Perth,WA
I do not doubt the record at Rangiora. Foehn effects can be very localised. Providing that the air mass over NZ at the time was reasonably warm, it is possible. Australia does not get the effects of foehns to this severity because our ranges are not that high.

As for the most northerly 40+ degree record, I would suspect that this record maybe held in Siberia or some other locality of northern Asia.

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#3578 - 02/11/2008 10:28 Re: 40c weather
ColdsnapIII Offline
Meteorological Motor Mouth

Registered: 19/01/2007
Posts: 6500
Loc: Mount Macedon, VIC
Well, In east Gippsland in far eastern Victoria towns on the coast there can often get temps in the low to mid 20's in Winter when the rest of the state may be mid to high teens. This is due to the Foehn winds coming off the Victorian high country or "alps", so in NZ where the Alps there are much higher than here iN SE Aus I can imagine that occuring in Summer. There's also a massive rainshadow around that part of the world isn't there? (lee of the Alps)

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#3579 - 02/11/2008 10:54 Re: 40c weather
Nev Offline
Weather Freak

Registered: 21/10/2006
Posts: 614
Loc: Waiheke Island, Auckland, NZ
Thanks Rime and Snowlover. And yes, that reading is official. New Zealand's highest mountains btw are 60% higher than Australia's. Summer temps in the low to mid 30's are quite common in the E and NE of the South Island (and to a lesser degree in the eastern North Island), due to the foehn effect.

Perhaps this MetService link (with a little helpful diagram) may help to explain the eastern South Island's notorious "mad-dog" nor'westers (scroll down to - 'Why is the wind so hot and dry when it reaches the Canterbury Plains?').

Edit - link

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#3580 - 02/11/2008 11:06 Re: 40c weather
Altitude Offline
Member

Registered: 05/10/2005
Posts: 663
Loc: Melbourne
The foehn effect, intresting. Learn somethign new every day.

It would have to be in Sibera as i saw on the discovery channel that Verkhoyansk has recorded 37c as well as holds the record for the lowest recorded temperature for an inhabited place. Intresting.

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#3581 - 02/11/2008 11:10 Re: 40c weather
Altitude Offline
Member

Registered: 05/10/2005
Posts: 663
Loc: Melbourne
The foehn effect, intresting. Learn somethign new every day.

It would have to be in Sibera as i saw on the discovery channel that Verkhoyansk has recorded 37c as well as holds the record for the lowest recorded temperature for an inhabited place. Intresting. However im not sure if Siberia has ever recorded an above 40 temp.

Climate of Siberia

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#3582 - 02/11/2008 18:30 Re: 40c weather
norfolk Offline
Weatherzone Addict

Registered: 28/06/2003
Posts: 2951
Loc: Caroline Springs vic.
Thanks for the info everyone. I didn't consider Siberia as a source of 40c temps. High 30's yes but not 40's.

And again yes I didn't consider NZ either. The foehn effect happens all over the world (I think they call it a chinook wind in Canada) The same thing could happen in southern south America with the Andes drying out the airmass in westerly or norwesterly winds.

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#3583 - 02/11/2008 23:02 Re: 40c weather
Nev Offline
Weather Freak

Registered: 21/10/2006
Posts: 614
Loc: Waiheke Island, Auckland, NZ
The most northerly place in Canada to record over 40C would probably be North West River in Newfoundland (53.53N), which recorded 41.7C on August 11, 1914.

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#3584 - 03/11/2008 11:36 Re: 40c weather
Blair Trewin Offline
Weatherzone Addict

Registered: 13/07/2001
Posts: 3825
Loc: Melbourne, Australia
That one does sound dodgy - it's pretty rare to hit 40 in eastern North America even a fair bit further south (New York's record high is 41). The site doesn't appear on the Environment Canada climate normals page either. Kamloops, BC (50.7 N) has reached 40.6. I suspect it's been hotter marginally further north in Canada, although once you get much further north than Kamloops in BC you start getting into pretty elevated country.

The NZ 1973 event was freakish - breaking a national record by 4 degrees is extraordinary - but it is certainly real. (Christchurch was only just behind - high 41s if I recall correctly). This was part of the same general system that brought very heavy rain to a lot of SE Australia (and in particular the Melbourne area) and broke the 1972 drought.

I'd expect that a 40 has occurred in central Siberia further north than 51 N, but don't have firm evidence.

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#3585 - 03/11/2008 15:25 Re: 40c weather
norfolk Offline
Weatherzone Addict

Registered: 28/06/2003
Posts: 2951
Loc: Caroline Springs vic.
Blair, I knew you would have some info, thanks for that. If there was somewhere I thought a northery 40c temp would have occured would be somewhere in the northern prairies of Canada, somewhere in Saskatchwan.
Or maybe on the downward slopes of the Rockies up near the Yukon? Has the Yukon recorded 40degree weather?

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#3586 - 03/11/2008 15:35 Re: 40c weather
snow4syd Offline
Member

Registered: 27/10/2008
Posts: 51
Loc: Oatley,NSW (The land of Spring...
The record for Alaska is 100F (38C) which was set in the interior. Fairbanks,AK at 65N has recorded 99F (37.5C). So a 40C up in the northern praries in Canada is likely to have been recorded.

I still think Siberia has this one though because Yakutsk,Siberia at 62N has got to 38.3C.

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#3587 - 03/11/2008 15:36 Re: 40c weather
Ruckle Offline
Meteorological Motor Mouth

Registered: 03/08/2005
Posts: 6343
Loc: Woodend VIC 579m ASL - where w...
Fairbanks Alaska has got to close to 38 I think.

Would have thought Argentina would have been a serious contender for southern hemisphere.

Great thread!
_________________________
Check out my Youtube channel http://www.youtube.com/user/Ruckle18?feature=mhum for more storms and even some snow

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#3588 - 03/11/2008 16:10 Re: 40c weather
pete28 Offline
Weatherzone Addict

Registered: 08/01/2007
Posts: 1131
Loc: Christchurch, New Zealand
I know Saskatoon in Canada (52N) has recorded over 40C on a couple of occasions, that is the most extreme confirmed weather observation in the northern hemisphere I can think of...

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#3589 - 03/11/2008 16:33 Re: 40c weather
Rime Offline
Weatherzone Addict

Registered: 07/06/2001
Posts: 1444
Loc: Perth,WA
I am not too sure about Argentina recording the most southerly 40+ temp. To what I can find, Argentina holds numerous records of temperatures in the high 40's, but all of these places are in the northern parts of Argentina (lat. ~33-27 deg).

To get 38.3 degrees in Siberia at 62N is incredible. To put that in perspective, Casey is at an latitude of 66S and it holds an all time high temperature of 9.2 degrees.

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#3590 - 03/11/2008 16:43 Re: 40c weather
TOM1111 Offline
Member

Registered: 27/10/2004
Posts: 2789
Loc: medowie near williamtown-octob...
Quote:
Originally posted by snow4syd:
The record for Alaska is 100F (38C) which was set in the interior. Fairbanks,AK at 65N has recorded 99F (37.5C). So a 40C up in the northern praries in Canada is likely to have been recorded.

I still think Siberia has this one though because Yakutsk,Siberia at 62N has got to 38.3C.
what an amazing place

mid summer they average 25c then mid winter its near on -40c as a max

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