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Canberra could break temperature records as heatwave heads our way

Michael Weaver 18 December 2019 3
Smoke haze over Kingston

Canberrans make their way home as the smoke haze hovers over Kingston this week. Photo: Michelle Kroll, Region Media.

Canberra could record its highest ever temperature next week as a band of heat makes its way across the country.

The Bureau of Meteorology is already forecasting temperatures in Canberra to exceed 40 degrees by the middle of next week, as record temperatures are currently being recorded in parts of Western Australia.

Weatherzone is reporting that a high-pressure system currently passing over the Great Australian Bight is causing hot air to lie over northern and western Australia.

“This strong and near-stationary upper-level high will deflect cold fronts away from Australia until at least next weekend, allowing a ‘dome of heat’ to sit over the continent for days on end,” Weatherzone’s Ben Domensino said on Friday (13 December).

BOM forecaster Jiwon Park told Region Media there is a chance of seeing record temperatures in Canberra in the coming week.

“Significant heat is forecast to affect large parts of Australia from this weekend until at least the end of next week,” he said.

Mr Park said the forecast for Canberra begins at 34 degrees on Monday before steadily warming to 35 on Tuesday and jumping to 38 on Wednesday.

He said the hottest days will be Thursday (42 degrees) and Friday (41 degrees).

On Thursday, winds are expected to remain light from the northwest during the day, with a light easterly sea breeze coming in late afternoon. Relative humidity on Thursday (19 December) is expected to be only 8 per cent.

Temperatures are forecast to reach 45 degrees in every mainland state and territory except the ACT next week.

Since temperature records began in 1939, Canberra’s highest December maximum temperature of 39.2 degrees was recorded at Canberra Airport on 21 December 1994.

The highest temperature ever recorded in Canberra was 42.2 degrees on 1 February 1968.

The December average temperature is 27.5 degrees.

The BOM is not forecasting any rain next week.

The BOM says the smoke haze is set to continue until at least Tuesday next week.

There is also a strong chance that Canberra could see more total fire bans.

An Emergency Services Agency spokesperson said Canberra had five total fire bans during the last bushfire season. There have already been five so far this season, with three of those occurring before summer started.

Forecast surface temperature for 19 December

The forecast surface temperature on Thursday, 19 December. Image: Weatherzone.

Mr Park said heat records may also be broken as the high-pressure weather system moves across Australia and picks up intensity as it goes.

“This heat will move into South Australia and NSW next week. We expect from Monday and Tuesday, some parts of NSW will see the temperatures exceeding 40 degrees.

“Temperatures in the mid to high-40s are likely in the areas of southern and central Australia throughout next week.”

Mr Park said the heatwave is likely to break December records throughout these parts of Australia.

The highest recorded temperature in Australia was 50.7 degrees at Oodnadatta in South Australia on 2 January 1960.

The highest December temperature was 49.5 degrees at Birdsville in Queensland on 24 December 1972.

“For this heatwave, whether we see those records break is something that we will have to wait and see,” Mr Park said.

BOM heat forecast

The BOM’s heatwave forecast for Tuesday, Wednesday and Thursday of next week. Image: BOM.


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3 Responses to Canberra could break temperature records as heatwave heads our way
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tfx1 tfx1 7:48 pm 19 Dec 19

Playing with the BOM database after they said Wednesday 18 December was the hottest day ever recorded for Australia. Some simple site specific official BOM statistics for major inland Australian towns and cities, which I know from experience are hot in summer, makes me wonder how they got the national average of 41.9 C. The towns I’m providing information for are not on the coast with the moderating ocean influence but well inland. Some towns recorded above the supposedly official national maximum but most were below it. My simple sample from highest to lowest in the hottest regions of Australia.
– Mount Isa 45.0 C
– Kalgoorlie 44.0 C
– Tennant Creek 42.8 C
and towns below the official maximum
– Broken Hill 41.8 C
– Katherine 41.6 C
– Longreach 41.1 C
– Charleville 39.9 C
– Blackall 39.6 C
– Cobar 39.2 C
– Dubbo 38.9 C
– Walgett 37.4 C
– Moree 35.3 C

What explanation can the BOM provide for their assessing the new maximum?

Acton Acton 5:15 pm 15 Dec 19

Looking at Bureau of Meteorology maps showing 119 years of rainfall, it is difficult to ascertain any definite trend in average rainfall, either more or less. There are alternating mainly blue maps (above average rainfall) and mainly red maps (below average rainfall). My guess is 2019 will be a mainly red map and 2020 or 2021 a mainly blue map again.

http://www.bom.gov.au/climate/history/rainfall/

Capital Retro Capital Retro 6:04 pm 14 Dec 19

“The highest temperature ever recorded in Canberra was 42.2 degrees on 1 February 1968.”

To add to this I am aware that the Forestry and Timber Bureau at Yarralumla recorded a temperature of 42 degrees (no decimal points available) on 11th January, 1939.

That’s 29 years apart and this year it will be 51 years since 1968.

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