Send ‘er down, Hughie! Rain is coming
Like it or not, Australia is on the brink of winter.
The final stages of autumn, an outgoing El Nino and a fifty per cent chance of La Nina forming in spring is bringing a larger degree of variance.
After a brief cooling and gusty winds temperatures across the south gradually rise today. A high pressure system expands a very large ridge around New South Wales, warm by day but chilly overnight. These highs in Autumn commonly produce clear skies, light winds and high dew point so for the next few mornings expect to wake to some fog and frost or the common stumbles of weather presenters – frog.
Australia’s climate is also being influenced by record warm temperatures in the Indian Ocean. The warmth can provide extra moisture for rain systems and that’s exactly what is happening. A cloud band forming over the Indian Ocean is being drawn into the west by a low pressure trough, as the trough deepens and the cloud band moves east rain enters central Australia this afternoon, four day rainfall models are indicating 50 to 100 millimetres, possibly more closer to the western border. A flood watch has been issued for the Northern Territory’s Western Inland Rivers.
Although a lot can happen in four days, there should be enough moisture and a powerful cold front this weekend to activate a significant rain event that will last into next week.