Northern Territory Sky Observations

Rainfall to soak some parched areas of WA

13:00 AEST Rain could finally fall over parts of southwestern WA over the next week, wetting areas that have barely seen any rain for months.  This rainfall will be caused by a low pressure trough extending from the Kimberley down to southwestern WA from late Thursday, with a low pressure system developing within it early to mid-next week.  The images below shows that widespread rainfall of between 15 to 30mm is forecast in the week across western and southern WA, with isolated falls of between 40 to 60mm in the Gascoyne and Goldfields districts.    Image: Accumulated rainfall to 8pm AWST on Thursday, May 2, according to Access (top) and ECMWF (bottom)  You can see there is still some uncertainty about where and how much rainfall will fall in these areas late this week and early next week, with one model placing rain over Perth and  the other predicting it will completely miss the city altogether.  The heaviest rainfall days are likely to be Friday and mid next week when the low pressure system develops.