Afternoon shower and high based thunderstorm activity is possible across parts of south-western Western Australia this afternoon and evening.
A low pressure trough will move into south-western parts of the state during Monday with increasing instability, leading to isolated shower and thunderstorm activity.
Hail may develop with more robust thunderstorm updrafts during the afternoon hours, however no large hail is expected.
Image 1 and 2, GFS thunderstorm probabilities, 5pm and 8pm WST. Image 3, EC thunderstorm and rainfall chart for this afternoon, windy.com.