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A recent discussion in another thread has me wondering, what are the highest temps you've seen in your location under no sunshine or atleast very limited sun, under 2 hours for example:
For Melbourne Australia:
37.5C / 99F with 1 hour of sunshine , on January 22, 2010
38.3C / 101F with 1.8 hours of sunshine, November 20, 2009
31.9C / 90F with 0.0 hours of sunshine, January 9, 2006
Nowhere near as extreme as Melbourne, but on Jan 1 this year, Sydney reached 29.3C with just 1.1 hours of sun.
I only have data going back a couple of years which is roughly how long I have been here
Locations in Canterbury have on various occasions reached at least 32C under a northwest "arch" forming east of the Alps under stable windflow, with nil sunshine recorded. Can't quote the highest likely value, probably under 34C.
Toronto has seen plenty of overcast days at 32+C/90+ F.
Probably 1-in-5 of our hottest days of the year are also dismal for light-levels.
Most memorable for me was 36 C (96 F) and completely sunless all afternoon... perhaps all day.
The humidity was 63-65% at 36 C, so the heat index was very-high.
I believe that was sometime between 1998 and 2000, though I'm unsure.
But there was no noticeable sun-heat; it felt about the same everywhere.
I think I felt worse (sweatier) in darker areas like near our house because the air was calmer beside a building.
Believe it or not,
it was actually the kind of overcast so dark you're tempted to turn on indoor lighting...
yet it was 36 C/96 F outside... in Canada!
Location: The western periphery of Terra Australis
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Sometimes in Perth it can be cloudy yet very hot. I remember numerous occasions where it exceeded 35C just before a thunderstorm and rain. There have been a few 40C days that were partly cloudy, and 35C days with full cloud cover are not unheard of. I remember an occaision where it was 37C at 11pm, blustery HOT winds (especially surreal as it was all dark) and RAINING.
Can anyone beat Toronto's heat index under full overcast?
With my dewpoint calculator,
it comes out to a dewpoint of 28 C (82 F) with ambient a smidgen above 35.5 C (96 F)
Wow!
The American heat index for 96 F with 63% humidity is 119 F.
With 65% it becomes 121 F.
I'm pretty sure The Weather Network said there was 63+% humidity that afternoon.
It sure felt like it too.
Like wearing putting on a rain coat when it's already hot and muggy.
If that's literally what I experienced,
I would GLADLY take a heat index of 121 F (50 C?) over a windchill of 21 F. (-7 C)
Are you sure that's right? A dewpoint of 28 C is extremely high and rarely seen even in the tropics, much less at 44 N! I know Toronto is humid, but surely not that humid? Are there records available?
Are you sure that's right? A dewpoint of 28 C is extremely high and rarely seen even in the tropics, much less at 44 N! I know Toronto is humid, but surely not that humid? Are there records available?
I have seen dewpoints of 28 C several times in Toronto over the years, posted by "The Weather Network."
Two summers ago was cooler than normal and we still saw a dewpoint of 25 C.
Toronto is at 43.5 N btw (I can feel a slight differerence in Ontario when I pass 44 N)
Dewpoints of 28 C are rarely seen inside the tropics because most tropical place aren't very-humid,
not that Toronto is exceptional, imho.
How would you be sure if you've never been here?
Immigrants from the Caribbean frequently complain during our worst spells of humidity.
Records? Dunno. Someone want to dig up 1998-2001 stats?
Last edited by ColdCanadian; 11-18-2010 at 05:52 AM..
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(I can feel a slight differerence in Ontario when I pass 44 N)
