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Post by trolik on Aug 15, 2019 14:15:21 GMT -5
So, I was wondering why coastal SE and central Queensland don't see the same record highs that the rest of Australia get like in Melbourne, Sydney, Perth, Adelaide etc. It would be understandable if the answer was for the fact that the summers in coastal Queensland are much more humid than the others. However, Townsville has recently seen 44C in January, way surpassing any of the coastal QLD cities to its south and its summers are arguably more humid (DP wise) than the Gold Coast which has a record high of only 40.5C. Therefore, why is the bottom half of QLD's coast, so immune to these bouts of extreme temperatures?
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Post by Deleted on Aug 15, 2019 21:18:02 GMT -5
Typically big time heat is caused in summer when a blocking high sits in the south east tasman sea and a heat low sits that over the north west of Western Australia. The high creates the stagnant conditions just waiting for a trough to drag the heat down towards the southern and south eastern parts of the continent. Whilst this is happening, the high is directing a cooler south easterly air flow onto the south east coast of QLd. When heat does affect the south east parts of Qld, the high is much further nth and the convergence leads to the heat from WA, NT and western qld being funneled to Brisbane etc. That's my take on it. Take it with a pinch of salt
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Post by knot on Aug 15, 2019 22:06:33 GMT -5
As my expertise lay with the Southern quarters of Australia, I cannot adequately make a judgement regarding the subtorrid and/or torrid Northern quarters of Australia. However, I can adequately conclude that humidity and precipitation play a hefty role in summer heatwave magnitude:
For instance, the Northern Tablelands regional of NSW (28°-31° S, straddling the Granite Belt north-south, comprising Glen Innes; Guyra; Walcha; Woolbrook; Tenterfield; Inverell). Summer records in the Northern Tablelands are much milder than those of the Central and Southern Tablelands, due to precipitation peaking in summer instead of winter (pattern northwards of the Southern Annular Mode); contrarywise, winter records are exceptionally cold for their northerly latitudes, owing to persistent winter high-pressure ridging, and frequent winter drought.
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Post by jetshnl on May 15, 2021 15:17:18 GMT -5
The same can be said for coastal nsw with the low record highs. I saw a post recently where the max temp in northern NSW was around 35C only.
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