East Coast low to hit South Coast region
Parts of the NSW, including the coast south of Wollongong, are in for some severe weather over the next 36 hours, with UBIMET, an internationally recognised leader in meteorology and severe weather warnings, issuing a VIOLET warning – its highest warning level.
Although some thundery rain is expected for Sydney today, it will escape the worst of the severe weather with areas south of Wollongong expected to be most affected.
An area of low pressure is drifting eastwards through NSW today with an East Coast Low forming overnight, with rainfall of up to 150mm – 200mm possible for the region encompassing south of the Illawarra, Shoalhaven (particularly impacting Nowra, Jervis Bay to Ulladulla and across to Morton National Park) and the Clyde Coast, stretching down to Batemans Bay and further to Moruya. The severe weather is forecast to hit Monday afternoon from around 2pm/3pm and extend into Wednesday morning, when it will weaken. Flooding is certainly a possibility in this region.
In addition this afternoon, severe thunderstorms are expected to develop in some central and north- eastern parts of the State. Associated with these could be flash flooding, large hail and strong wind gusts.
“It’s not often you get such high amounts of rainfall at this time of year,” says James Wilby, UBIMET Senior Meteorologist. “From our records, the last such significant weather event with that amount of rain was 8 August 1998, when a large amount of damage, including landslides, was caused.
“The atmosphere is very unstable, with the perfect conditions for severe weather. This instability is being caused by a low pressure system combined with a warm, moist plume of air from the north.”
As the East Coast Low develops, wind will become more of a feature and there is the potential for strong south easterly wind gusts up to 80-90km/h developing overnight Monday into Tuesday from Jervis Bay to Moruya and neighbouring coastal areas.
The Wollongong area is also expected to receive significant rain, potentially around 50-60mm. UBI- MET has issued a RED warning for Wollongong, the second highest warning level. The East Coast Low will weaken by Wednesday.