Noosa Heads has recorded nearly half a metre of rain in the last 7 days – much of it occurring in the last 4 days with a total of 486mm. Other falls include 369mm at Upper Springbrook though most of that has fallen in the last 2 days! Most areas close to the coast between the Sunshine Coast to the Gold Coast have had 100mm or more but further inland rainfall has been lighter with 38mm in Ipswich and 32mm in Toowoomba (however local storm activity has seen some heavier falls of over 100mm occur in these areas too).
The rainfall is a combination of severe storms last week and rain over the weekend. The rain has been generated from a large upper trough which developed a complex low pressure system off the southern Queensland coastline. The low was multi-centred and this morning we saw at least three distinct different circulations occur in the low (see below’s satellite imagery). This low pushed high levels of moisture onto the coastline from the onshore SE to ESE winds with gale force wind gusts occurring around the Gold Coast yesterday and this morning. This moisture when it approaches the coast and ranges is forced to rise and this generates the heavier falls over these areas.
Fortunately, rain should ease quickly tomorrow but we may see further showers and storms redevelop later in the week.