A line of thunderstorms stretching from the Wimmera through Robinvale and across western NSW is charging east tonight.
A low pressure system and associated trough is moving across Victoria and New South Wales this evening, producing a squall line of thunderstorms. These storms bring the risk of damaging wind gusts and large hail.
The majority of western VIC and NSW experienced clear skies at some stage today before the trough arrived. The clear skies allowed heating on an otherwise cool and cloudy day. This heating provided enough uplift (or instability) for thunderstorms. When the trough (change in wind direction and airmass) moved into this unstable air it has triggered a long band of thunderstorms.
These storms will progress southeast in VIC and east in NSW during the evening, affecting all towns in its path for about 20-30 minutes each with lightning, rain and potentially damaging wind gusts or large hail. The band of storms is likely to peter out over VIC during the evening, while charging through the night in NSW.
Once the line of storms pass through each town in western NSW winds will pick up and become quite gusty. While in VIC winds will only increase near the NSW border slightly. However in VIC there is the chance of a shower or two.
Tomorrow, the chance of showers and storms will linger across central NSW and VIC, but the risk is much lower than tonight.
© Weatherzone 2013
16:38 EST Organisers of the Mulga Bill Quick Shear at Yeoval, in Central West New South Wales on the weekend, were a bit nervous about the weather on Saturday morning; there'd been good rain on Friday night and they didn't have a 'Plan B' if things didn't clear up.