The lingering tropical air mass over Victoria is once again behind the sultry and unstable conditions across the state today. While conditions have cleared since yesterday’s epic deluge, don’t get too comfortable in that beer garden this afternoon – a low pressure trough is headed our way, moving east across the state and bringing with it risk of severe thunderstorms (and asthma), flash-flooding and hail across the state from 2pm.

In the city we can expect those storms to roll in from the west between 4 and 6 pm, just in time for your afternoon commute to become an odyssey – large hail, damaging wind gusts and a significant downpour should be expected, especially across the western suburbs, the Bureau of Meteorology (BOM) said on Thursday morning.

And squelching home from work today may be more than just an inconvenience for some. The wild weather also brings with it a significant risk of thunderstorm asthma, which will increase to high as the storms pass over Geelong and Melbourne. Mask, umbrella, Ventolin –check.

BOM says the weather system will blow over to the east tonight, leaving tomorrow and the weekend looking much more mellow weather-wise. Temperatures are predicted to drop more than 10 degrees from a high of 31 today to about 20 tomorrow, with the weekend forecast looking much less hectic.