RAINFALL RETURNS TO LARGE PARTS OF WA EARLY IN THE WEEK WITH A NEW MOISTURE SURGE.

We can see that moisture surge above our heads with thick high cloud over the SWLD. There are slow moving light showers underneath the thick cloud with lighter onshore winds and some virga passing over inland WA this afternoon.


The showers will persist about the west coast during the coming few days in onshore northwest winds before a low approaches the coast with more widespread rainfall for large parts of the southwest.


A stronger front is expected to bring more windy showery weather from later this week into next weekend for the west and south coasts, the inland turns dry once again.


GFS 00z - Surface Pressure Pattern - Next 16 days - Valid Saturday 17th of July 2021

GFS brings the low pressure system in during Tuesday with periods of rain and a few storms with moderate to heavy falls around. The rain will then contract east mid week ahead of a stronger system developing on Friday with periods of rain and windy weather. Follow up fronts will also bring showers at times into next weekend with a flat ridge over much of the inland keeping areas away from the coast, seasonal and dry.

GFS 00z - Rainfall next 10 days - Valid Saturday 17th of July 2021

Rainfall turns widespread early in the week with some decent rainfall totals near 50mm possible out that event with the low clearing during Wednesday. The inland should see 20-30mm out of the sequence. Another system later in the week brings the better rainfall back to the coast with the chance of damaging winds and colder weather. The showers continue into next weekend with onshore winds.

Rainfall for the next 10 days

Rainfall heaviest about the west and south coastal areas with the frontal weather and low pressure drifting through over the coming 10 days. Some heavier falls in excess of 50mm is possible mid week alone. Then the westerly winds will dry out the inland from next weekend as the flow stablises with high pressure ridging in over the central and northern parts of the state. The risk of rainfall continues every day for the west coast through the outlook period, with the wettest days expected mid week.

More weather details to come from Sunday.


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