This article is written in Australian English, which has its own spelling conventions (colour, realise, program, labour (but Labor Party)) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus.
A fact from Cyclone Rusty appeared on Wikipedia's Main Page in the Did you know column on 11 October 2015 (check views). The text of the entry was as follows:
Did you know... that Cyclone Rusty caused sustained gales that affected Port Hedland for a record-breaking 39 hours straight?
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"Originating as an area of low pressure on 22 February well to the northeast of the Kimberley region" - northeast or northwest? The track map looks northwest of Western Australia
"steadily developed within a favourable environment. Steadily decreasing" - more word variety?
" a monsoon trough combined with the Madden-Julian Oscillation" - did they really combine though? Doesn't the MJO more enhance a trough than combine to produce a storm? I might be wrong though.
Great bit about the record high water temperatures fueling the storm. Nothing to do here, just good job.
You should specify what a "severe tropical cyclone" is. I had to look through TC scales a bit to realize it meant a C3 on the Australian scale.
"Shortly thereafter, land interaction incited weakening as Rusty began drifting south-southeast as the ridge over Australia began to rebuild." - could be cleaner
"A local race was cancelled due to the storm in Esperance." - this seems borderline trivial
"1.4 million megalitres" - I'm not sure what a megalitre is. Given you're already using million here, why not just use billion or whatever and just use ordinary litres?
" Melbourne was expected to have a record stretch of 30 °C (86 °F) or higher temperatures as the air mass moved east" - did it?
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