Been nice to see a return to an unsettled weather pattern despite it being an onshore flow. Upper temps are quite low even up here with the Brisbane sounding showing 500hPa temps around -18. Combined with the moist lower atmosphere and dry uppers, some large cumulus and cumulonimus has formed over the past 24 hours – mainly along the coast. Some very photogenic cells passed by here yesterday afternoon.
The structure was remarkably similar in structure to an event just over two years ago
6 April 2008
21 Feb 2006
No doubt the weather pattern was much the same. It should remain unstable for the next 2 days before the upper trough weakens a bit.