Models align for long-awaited return of wet weather
COOLER temperatures, some cloud overhead and the chance of showers heading into the weekend look set to greet the start of the September school holidays on the Sunshine Coast.
Bureau of Meteorology forecaster Lachlan Stoney said a ridge of high pressure and increasing easterly winds over the next couple of days would bring an end to the warm northerly airflows of the past week.
Temperatures were set to fall back to day time maximums from 23C to 25C.
Mr Stoney said as the easterlies picked up increased moisture would act to moderate temperatures back close to the September average of 24C.
He said Friday evening would see the chance of showers likely to linger into Saturday morning.
The three main weather models BOM uses indicate potential for widespread rain late next week and potentially arriving as early as Wednesday and clearing off during Friday.
Mr Stoney said the models disagree with the timing of the arrival of that rainfall and where the heaviest falls will be.
“Broadly speaking (according to the models) across the south east isolated rainfall totals could be in excess of 40mm,” Mr Stoney said.
“Some models are putting those numbers in large sections of the Sunshine Coast.”
At this point the BOM’s expectation was for totals of 10mm but with the possibility of much higher totals.
“If the models prove accurate there could be broad area rainfall of 20mm.”
The other feature to watch for is the chance that as the upper level trough moves through the southeast on Monday, dryer, gustier winds may briefly pick up elevating the fire danger.
Expect a 24C maximum today with conditions partly-cloudy overhead and with the slight chance of a weak thunder storm inland this afternoon.
Winds that were light early would pick up to 15-25 kmh from the east then fade into the afternoon.
A 25C maximum is forecast for Friday on another partly-cloudy day with the slight chance of rain in the evening and extending into Saturday morning.
Winds will again be light early developing to easterlies from 15-25 kmh through the morning but easing into the afternoon.
Expect a wet start to Saturday easing through the day with temperatures back to a September average of 24C.
Sunday promises to be a slightly warmer 25C on a partly-cloudy day with light winds throughout though the chance of an afternoon north-easterly sea breeze.