43 degrees according to the Bureau (which means we'll probably get snow).
If their predictions are correct it will be Sydney's 3rd hottest day since records started.
My thoughts are with those in bushfire prone areas and the firefighting crews who must be experiencing temps around 60 degrees I reckon.
I can recall 2 days in past few years that have been 42 degrees and it's unbearable if you are outside. Indoors with air con is the only place to be. Believe it or not there will be stupid people at the beach sun baking - idiots.

Building managers all over Sydney dread days like this because there's the potential for the temperature to go above design and if that happens, cooling towers simply will not work.

It's not the 40 degrees that does the damage, that's a dry bulb temp, it's the temperature of the moisture in the air that's important because that's how cooling towers reject the heat from the buildings, there must be a difference in temperature of the water in the cooling tower and the water contained in the air for there to be heat rejection.

If a normal wet bulb design condition for Sydney is 25 degrees, and you want water to be cooled down to 29 degrees from a starting point of 35 degrees, not problem.

But if the temperature of the moisture in the air is 30 degrees, there will be no cooling possible lower than 30. That called "above design" and that means you start to loose conditions in the building.

will my fridge still work and can i still watch porn?if not we need smarter people sorting this "above design" rot sorted presto

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obct said...
Building managers all over Sydney dread days like this because there's the potential for the temperature to go above design and if that happens, cooling towers simply will not work.

It's not the 40 degrees that does the damage, that's a dry bulb temp, it's the temperature of the moisture in the air that's important because that's how cooling towers reject the heat from the buildings, there must be a difference in temperature of the water in the cooling tower and the water contained in the air for there to be heat rejection.

If a normal wet bulb design condition for Sydney is 25 degrees, and you want water to be cooled down to 29 degrees from a starting point of 35 degrees, not problem.

But if the temperature of the moisture in the air is 30 degrees, there will be no cooling possible lower than 30. That called "above design" and that means you start to loose conditions in the building.

In lamens terms, if ya work in the CBD in a plush air con building, tomorrow you're farked. Well welcome to our world out in the suburbs.

Well at least we now have (apparently) much improved lines that will enable the power to still be getting to your air con unit OB - well its rumoured that 50% of our increases in recent yrs are attributed to this. It will be interesting to see if they actually survive their first real test tom. All the national parks around my area are in lock down tom - which means my fav local surf spot is out of action unless I do the long walk from the other beach (not happening)....all the campers have been shifted from all the other spots like Birdie, Mooney, Fraser etc.....I will be staying off the roads myself and working from home with the air con on.....it will only be the 2nd time we have used it this summer. The Northerly has just started to blow through the back of our house in the last 15 mins and its an incredibly warm breeze.....not looking forward to tom. Stay safe everyone!

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obct said...
Building managers all over Sydney dread days like this because there's the potential for the temperature to go above design and if that happens, cooling towers simply will not work.

It's not the 40 degrees that does the damage, that's a dry bulb temp, it's the temperature of the moisture in the air that's important because that's how cooling towers reject the heat from the buildings, there must be a difference in temperature of the water in the cooling tower and the water contained in the air for there to be heat rejection.

If a normal wet bulb design condition for Sydney is 25 degrees, and you want water to be cooled down to 29 degrees from a starting point of 35 degrees, not problem.

But if the temperature of the moisture in the air is 30 degrees, there will be no cooling possible lower than 30. That called "above design" and that means you start to loose conditions in the building.

ooh shizz - cooling towers will then become Legionnaires cauldrons , fark that Obs it's ....... SICKIE & SURF time

Keep an eye out for ppl having a hard time of it. An elderly lady passed out (heat being partly to blame i think) in front of a friend of mine in the city today in Brisbane and we haven't seen the worst of it up here

Good start to the day here....all power is off! Ahhhh

well your arms still work...go for a paddle

With the cooler temps not expected till after midnight, I think I'll stay at the beach until well after dark.

The relative humidity is supposed to be quite low today, that's not good news in terms of bush fires, but it does usually mean that the wet bulb temps stay low.

If I was a cynic, I would probably say something along the lines of
"now all those concerned executives sitting in their ivory towers can probably be assured that they can be concerned about the plight of the poor fire fighters in air conditioned comfort".

I'm glad I'm not cynical, that would be a nasty thing to say.

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Ted the Kiwi said...
Good start to the day here....all power is off! Ahhhh

Sux Ted heatwave and no cold beers .

what the farks happening TB's caravan of wicked adventure looks the go even more geez roll on winter hughbert please !!!!!!!!!

34 here now and a very warm NNE starting to flow.

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Ted the Kiwi said...
34 here now and a very warm NNE starting to flow.

Nude run around the pool with paddlepop in mouth.

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Ted the Kiwi said...
34 here now and a very warm NNE starting to flow.

29 degrees here already Ted and it's only just gone 6am - Christ almighty on a stick it's warm ......

ahhhhh shizz the Pope overheard me

geez he's ordained me to a spanking by the Madame Grail

We are touching 40 at the moment whilst the Sydney Airport is at 42 (thats real close to Scotty's house in the 'burbs ).....so its dam hot fellas!

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Ted the Kiwi said...
We are touching 40 at the moment whilst the Sydney Airport is at 42 (thats real close to Scotty's house in the 'burbs ).....so its dam hot fellas!

All good down here Ted.
A bit of cloud around has helped down here.
Btw, the aircon in the work van is on overload.

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Ted the Kiwi said...

I didn't realise Lake Eyre was that big.

Just hit 41 here on the mid north coast, its even too hot to walk outside to the pool.

For those that like a few numbers this just hit my inbox from the BOM


Large parts of central and southern Australia are currently under the influence of a
persistent and widespread heatwave event. This event is ongoing with further
significant records likely to be set. Further updates of this statement and associated
significant observations will be made as they occur, and a full and comprehensive
report on this significant climatic event will be made when the current event ends.
The last four months of 2012 were abnormally hot across Australia, and particularly so for maximum (day-time) temperatures. For September to December (i.e. the last four months of 2012) the average Australian maximum temperature was the highest on record with a national anomaly of +1.61 °C, slightly ahead of the previous record of 1.60 °C set in 2002 (national records go back to 1910). In this context the current heatwave event extends a four month spell of record hot conditions affecting Australia.These hot conditions have been exacerbated by very dry conditions affecting much of Australia since mid 2012 and a delayed start to a weak Australian monsoon.

The start of the current heatwave event traces back to late December 2012, and all
states and territories have seen unusually hot temperatures with many site records
approached or exceeded across southern and central Australia. A full list of records
broken at stations with long records (>30 years) is given below.
The current heatwave event commenced with a build up of extreme heat in the
southwest of Western Australia from 25-30 December 2012 as a high in the Bight and a trough near the west coast directed hot easterly winds over the area.

Particularly hot conditions were observed on the 30th, with Cape Naturaliste observing 37.7 °C, its hottest December day in 56 years of record. From 31 December the high pressure system began to shift eastward, bringing well above average temperatures across southern WA between the 30 December and 2 January. Temperatures reached 47.7 °C at Eyre on the 2nd its hottest day in 24 years of record, while Eucla recorded 48.2 °C on the 3rd, its hottest day since records began in 1957.

By the 4 January the high pressure system had moved off eastern Australia, with
northerly winds directing very hot air into southeast Australia, while southerly winds
eased temperatures in WA. Hobart experienced a minimum temperature of 23.4 °C on the 4th (its hottest January night on record), followed by a maximum of 41.8 °C (its hottest maximum temperature on record for any month in 130 years of records) and the highest temperature observed anywhere in southern Tasmania.

The area of intense heat moved northeast on the 5th as the high pressure system, now centred over the Tasman Sea, and a low pressure trough directed hot northerly winds into the Riverina and western NSW. Areas affected recorded temperatures well in excess of 40 °C, with Marree in SA recording 48.4 °C, Yarrawonga in VIC recording 45.7 °C and Hay in NSW recording 47.7 °C, breaking its annual daytime temperature record.

^^^Simondo, can you summarise for me please.
Come on Ted, you know I'm only good for 50 words or less. When it's 42 degrees outside, I am only good for looking at pictures.

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Scotty88 said...
^^^Simondo, can you summarise for me please.
Come on Ted, you know I'm only good for 50 words or less. When it's 42 degrees outside, I am only good for looking at pictures.

Sorry Scotty. How rude of me

^^^^
Fark its hot





zat simplified nuff scotty

Thanks Ted and a huge thank you to Pup for your contribution. Only a homosexual would red thumb that pic.

Faark, it's supposed to be 32 at midnight tonight.....
www.weatherzone.com.au/nsw/hunter/bar-beach/detailed-forecast

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SP said...
Faark, it's supposed to be 32 at midnight tonight.....
www.weatherzone.com.au/nsw/hunter/bar-beach/detailed-forecast

Maybe take the lady down to the Merewether Baths for some late night canoodling.....from memory its a very good spot for it

Hahaha..... Good idea.

Looks like a a hot one on Saturday 2.

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Ted the Kiwi said...

SP said...
Faark, it's supposed to be 32 at midnight tonight.....
www.weatherzone.com.au/nsw/hunter/bar-beach/detailed-forecast

Maybe take the lady down to the Merewether Baths for some late night canoodling.....from memory its a very good spot for it

32 at midnight - I'm sure you would have the area to yourselves.

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Ted the Kiwi said...

SP said...
Faark, it's supposed to be 32 at midnight tonight.....
www.weatherzone.com.au/nsw/hunter/bar-beach/detailed-forecast

Maybe take the lady down to the Merewether Baths for some late night canoodling.....from memory its a very good spot for it

way to go Ted -

The second I got home I made myself a samich grabbed a drink and drove straight down to the Roy for a wave.

I was in there by myself for most of the time, crap surf, but I bagged a covey.

Didn't get out till 8 and I'm still siting beside the water.

The shower was hotter than I would have at home after it had passed under the car park.

The AC systems would have worked well today, I never saw a wet buld temp above 21.9 all day.