Temperatures are forecast to be well below average as well, which has been the theme so far this week, with the colder southwesterly flow set to return once again.
A fast-moving front is forecast to stand up over the Bight this morning before it sweeps into southern SA during Friday with a broken band of showers, mainly light and the risk of some thunder. The shower coverage will then move on into western and southwest Victoria later Friday.
But the colder airmass is forecast to arrive from Saturday afternoon with a stronger follow up front moving through SA and then into the southeast states Saturday night through Sunday morning. This will offer the more widespread rainfall opportunity for the sequence.
Behind the band of moderate rainfall over SA, VIC and TAS, showery periods are to follow with strong to gale force westerly winds shifting more southwesterly next week. The chance of local hail and thunder with snowfalls down to 500m on the mainland and 200m over Tasmania is possible early next week.
The bitterly cold southwesterly flow will not abate until Wednesday next week with showers gradually pushing into VIC and western TAS to end the week. The slow-moving high-pressure system will determine the rainfall spread over the southeast mid to late next week.
If the high is sitting closer to SA, then the weather will clear faster over the southeast but if it is sitting back towards WA, then this will leave the door open to more fronts to pass through the cold and unstable southwesterly airstream, keeping the showers going.
Let's take a look at the latest weather issues.
Rainfall Next 10 Days
Rainfall is looking to come in two bursts. A band of rainfall over the northern parts of NSW is forecast to be attached to moisture streaming in well ahead of the first in a series of cold fronts set to pass through the southeast from tomorrow. The strongest of the cold fronts arrives in SA on Saturday afternoon before moving into VIC during the evening, reaching southern NSW on Sunday. Moderate rain along the front is expected and a mass of showery southwesterly winds is forecast to then sit over SA, VIC and TAS. Further light to moderate rainfall is forecast to stack in areas exposed to the southwesterly wind regime throughout next week. Conditions should dry out over much of SA from mid next week and inland and coastal NSW should be mostly dry from the same time period. Showers may persist right through to the following weekend in the onshore flow over VIC and western TAS with gloomy skies persisting for much of next week.
Farmers and Graziers - This Weekend and may persist into next week.
The cold and windy weather will continue for large areas of the southeast for the coming week, but we have got a pair of strong cold fronts expected to move through leading to all the elements available, leading to dangerous conditions for stock exposed to these wintry winds and showers. The risk will contract further south into VIC and TAS next week with conditions improving over NSW, though remaining cold.
Severe Weather Watch - Damaging Winds
A strong cold front passing through the southeast will see damaging wind gusts developing ahead, with and behind the feature as it rolls through late Saturday through Sunday and into Monday. The risk will contract into Victoria during Sunday afternoon with a mass of cold showery air persisting into Monday. Strong gradient winds will reach the NSW Alpine areas and bounce off the Great Dividing Range and impact areas to the west of Sydney and Wollongong. The winds ease from Tuesday next week.
Snowline - Sunday through early next week.
Noting that the coldest air will be peaking over the southeast from Sunday to about Tuesday before we see conditions starting to improve over NSW and the atmosphere should begin to warm over VIC and TAS later next week. The weather is forecast to become drier as we go through the week across the inland, so even though there may be colder air, there may be no precipitation available to produce snow, with that staying back into VIC and TAS.
More to come throughout the evening updates.