Fairfax Media Network

Weather News

Tropical Cyclone Mitchell is first of the season

Willemien Phelan, Saturday December 29, 2012 - 13:35 EDT

Tropical Cyclone (TC) Mitchell formed over the Indian Ocean more than 630 km west off the WA Pilbara coast. It is this season's first Tropical Cyclone entering Australian waters.

By 8am WST on Saturday morning Mitchell had developed into a Category 1 system and was moving in a south-southwesterly direction at 19 kilometres per hour. As TC Mitchell is expected to move southwards it is expected to intensify into a category 2 system on Saturday evening and Sunday morning while remaining well offshore. By Sunday 8pm WST the system will have moved over cooler waters and will ease into a Category 1 system. As it weakens it will drift further southwest and away from the coast.

At this stage the system is not expected to produce damaging winds in coastal communities, however people in the north west of Western Australia should monitor forecasts and warnings closely.

The indirect effects from this system for the Pilbara communities are an increase in rainfall and wave heights.

The heaviest tropical downpours from Mitchell are expected to stay offshore, however residents in the Pilbara region, and especially the coast, can expect an increase in rainfall from this system on Saturday and Sunday. This brings the risk of flash flooding. Overall 30 to 50 mm of rainfall is expected to accumulate with this system over the next three days.

Combined wave and swell heights are expected to increase to around 2.5 metres on Sunday.

- Weatherzone

© Weatherzone 2012

More breaking news

ABC News
Sydney Morning Herald
National Nine News
News Limited

Display Your Local Weather

Weather News

BoM given one day's notice about CSIRO restructure

20:14 EDT

The Bureau of Meteorology (BoM) and the Australian Antarctic Division say they were given just one day's notice about a major CSIRO restructure that could impact joint projects.

Perth heatwave putting city's water supplies under pressure

18:55 EDT

As Perth sweats through a severe heatwave, pressure is mounting on the city's dwindling water supplies.

Farmers say they are let down by weather bureau staff cuts

17:25 EDT

Farmers in western New South Wales say they feel let down by the government, after changes to the Bureau of Meteorology regional offices.