heavy rain thunderstorms queensland east coast

Three troughs were expected to combine to deliver heavy rain and possible thunderstorms along the east coast, with the bureau issuing a severe weather warning.
Courtesy: Jorge Branco

Parts of Queensland’s east coast are copping a drenching, with the Bureau of Meteorology registering falls of more than 100 millimetres within a matter of hours on Monday.

The unpredictable conditions were expected to deliver heavy rainfall to areas between Bundaberg and the Sunshine Coast during Monday and into Tuesday, with three separate weather systems predicted to combine to bring heavy rain and possible thunderstorms.

The bureau issued a severe weather warning on Monday morning as the upper trough over south-west Queensland intensified and began to move east.

According to the bureau, three troughs were set to combine – an upper trough over south-west Queensland, an inland trough through the central interior and a slow-moving coastal trough over the Capricornia waters.

“Six hourly rainfall totals of 90 millimetres to 120 millimetres are possible, with isolated heavier falls up to 180 millimetres possible, particularly near the Wide Bay coast,” the bureau warned on Monday.

“The upper trough is expected to weaken while slipping further south-eastwards overnight tonight into Tuesday.

“Heavy rain is then expected to focus further offshore of the coast from early Tuesday morning.

“Thunderstorms will likely occur in the wake of the rain band through Tuesday through the south-eastern quarter of the state.”

Locations that may be affected include Gympie, Bundaberg, Maryborough, Hervey Bay, Fraser Island, Biloela, Blackwater, Rolleston and Baralaba.

Barnetts Road, north-west of Bundaberg, recorded 112 millimetres in the six hours to 11am on Monday.

Belyando Creek, west of Mackay, received 153 millimetres in the 24 hours to 1pm.

Castle Creek, west of Bundaberg, saw 140 millimetres fall in the 24 hours to 11am.

Peak Vale, north-west of Emerald, registered falls of 93 millimetres in the three hours to 4am.

A strong wind warning has also been issued for the Fraser Island coast, Sunshine Coast Waters and Gold Coast Waters.

Meanwhile, a severe thunderstorm warning for residents in the Central Highlands, Coalfields, Wide Bay and Burnett forecast districts was cancelled just after midday on Monday.

BoM meteorologist Andrew Bufalino said “things could change very quickly” and encouraged Queenslanders to keep up to date with the latest forecasts and warnings.

The heavier falls were expected to remain north of Brisbane, however, if the coastal trough did reach the river city and combine with the inland trough, then high rainfall totals could follow. As it stands, Brisbane was expecting falls between 25 and 35 millimetres on Monday.

Lingering instability in the weather across the state meant there was a chance of showers throughout the week.

Brisbane experienced an eight-degree temperature drop on Sunday to 26 degrees, which signalled the impending arrival of the much-needed rain.

A top of 20 degrees is predicted for Monday.

Source: https://www.brisbanetimes.com.au/national/queensland/bureau-warns-of-flash-flooding-along-queensland-s-east-coast-20171001-p4yw7k.html