West of Australia braces for wintry weather on Tuesday

West of Australia braces for wintry weather on Tuesday

Western Australia, as the south-west corner of the state, including Perth, is braces for what could be its coldest day of the year so far, is on the cards for a wintry mix of hail, blustery thunderstorms and even snow flurries.

A sluggish cold front reached Perth just before midday on Monday and is set to sweep over the rest of the South West Land Division, reaching Geraldton to Hopetoun this evening.

It is not likely that this event will be as strong or prolonged as the system that hit WA last week, causing record wind gusts in some places, but it is still expected to pack a punch.

The Cape Leeuwin and Ocean Reef have already recorded wind gusts near 90 kilometres per hour.

The Bureau of Meteorology senior forecaster Caroline Crow said the initial cold front would be followed by a pool of cold air on Tuesday, which would send maximum temperatures plummeting and bring hail to a large area of the state.

She said there will be potential hail through the South West Land Division from Jurien Bay to Lake Grace to Esperance into tomorrow.

It's the coldest outbreak for the south-west of the state we're looking at for this season, given the region of hail potential which is quite far inland. She said maximum temperatures would generally be between two and six degrees Celsius lower than average on Tuesday, with temperatures in the Great Southern region struggling to reach the low teens.

She said that the Great Southern and South Coast coastal district is looking at temperatures around 10 C to 12 C.

From Bunbury into inland parts of the South West Land Division, all the way to the south-east coastal district around the 12 C mark. Perth is forecast for cooler than normal weather, with a maximum of 15 C expected in the city and 14 C in Mandurah.

The coldest day of the year in Perth was July 17 when the temperature reached 14.2 C.

In Katanning, the coldest day was on July 30 when the mercury reached just 11.1 C, Mount Barker's chilliest day was August 3, 11 C and Bunbury's coldest day was July 30 13.9 C Bluff Knoll could get more snow and the coldest day was on July 30.

Ms Crow said the cold blast could mean snow on Bluff Knoll, in the Stirling Ranges, for the second time in a fortnight.

She said it might get cold enough to see a bit of snow up Bluff Knoll, early in the morning around 4 am to 5 am through to midday.

It's more likely to be flurries rather than really settle on Bluff Knoll. One weather app, Windy, forecasts the chance of light snow falling on the Perth Hills early on Tuesday. Ms Crow said that was unlikely.

She said that the darling scarp doesn't have a freezing level low enough or cold enough to get a dusting of snow like Bluff Knoll.

It's not just the south of the state expecting a wintry blast.

Ms Crow said a band of cloud was starting to thicken over western Pilbara and central WA, which would likely bring showers by mid-week.

She said that we're going to see the potential for showers and patchy weather out of it tomorrow.

And then coming into Wednesday the eastern parts of the Pilbara and into the interior could get falls of 10 millimetres, with isolated showers up to 20 mm. Ms Crow said that the showers were unusual for this time of year, with the north of the state currently in the middle of its dry season.

She said there would be cool temperatures for the region.

She said that the band temperatures could be four to eight degrees below average under that cloud.