After the “one day wonder” heatwave – the Victorian Alps get a dusting of snow 5-6 Dec 2012

After more than a week of scaremongering media about the rapidly decaying “heatwave” – the Victorian Alps get a dusting of snow last night. And Canberra wakes to learn the night touched an all-time record low temperature for December – plus there were snowfalls on the Brindabella Range. Goulburn and Braidwood also had record cold nights. Gotta love weather.

On 27 Nov the BoM warned of a widespread, severe heatwave – turned out a short heatwave

For many centres it was a one day wonder – although record heat was felt at Mildura and in that region on the 29th. But how quickly we forget our history – just compare Mildura in 1894 and 1902 with 2012. 1894 saw 4 days strait over 40 while 1902 saw 12 days over 40 incl 4 strait. 2012 only had 1 day over 40 – 2 if you count the 39.8 near miss as a 40. So that is 2 in 2012 vs 12 in 1902 – no contest.

Find early daily data at this BoM site
Over enthusiasm for the prospect of some hotter days lead the BoM to exaggerate forecasts for a week or so as this “widespread, severe heatwave” decayed and cooled very rapidly. See my earlier posts re Canberra region — Sydney — and Brisbane.

BoM exaggerated Brisbane heatwave – and it was only a “one day wonder”

It puzzles me that recent Brisbane forecasts have all been inaccurate with the errors being the same way – forecasts are too hot. I do not expect exact forecasts but I expect errors should be roughly even both ways. Media claptrap about a “heatwave” has been apparent since late November heat built in the centre culminating in the all time record hot November day of 45.5 degrees at Mildura on the 29 November. This heat spread south east, east and north-east but the intensity decayed quicker than the BoM forecast – see my earlier post re forecast failures for Sydney and Canberra.
Date Brisbane Forecast – Brisbane Weather
27-Nov——- 30 ——-29.4
28-Nov——- 32 ——-30.3
29-Nov——- 31 ——-29.9
30-Nov——- 32 ——-30.6
1-Dec——– 32 ——-30.2
2-Dec——– 32 ——-29.8
3-Dec——– 33 ——-31
4-Dec——– 39 ——-37.9
Brisbane media Dec 2nd and on the 3rd