Extremely heavy rain has fallen overnight and early Friday morning on the NSW South Coast, as well as in far eastern Victoria, the NSW Snowy Mountains and Victorian High Country.

As we warned you on Wednesday and again on Thursday, heavy rain was likely in SE NSW and east Gippsland, and so it proved overnight.

Heavy falls to 9 am Friday morning were recorded in numerous centres in, including:

• Bega 103.0 mm (heaviest for December in 7 years)
• Merimbula NSW 98.4 mm (heaviest for December in 27 years)
• Ulladulla NSW 78.2 mm (heaviest for December in 27 years)
• Combienbar VIC 68.8 mm (heaviest for December in 26 years)

The rain left the main street of Mogo awash. Mogo is a tiny town between Batemans Bay and Moruya which used to be best known for its open-range zoo, cafes and hippie knick-knack stores. But in the Black Summer, it became a town on everyone's lips as fire roared through.

What a contrast two years makes.

Two years ago this month, Mogo, NSW was devastated by the bushfires. Today, its main street is underwater. We need climate action and we need it now. pic.twitter.com/sVNGjPe7zC

— Kieran Pender (@KieranPender) December 9, 2021

But it wasn't just the rainfall totals which made the last 24 hours a notable event on south coast: it was the intensity of the rain.

• An incredible 122 mm of rain fell in just three hours in the ranges just west of Moruya, with 170.8 mm in the six hours to 5 am.
• 153.6mm was recorded in the six hours to 8:00am a couple of hours further north at Lake Conjola, with 104 mm falling in three hours.

Another rainfall reading of note was the 64.4 mm at Cooma Airport, a notoriously dry spot. Take a look at this farm dam about 15 minutes from Cooma Airport in the Snowy Mountains region of NSW. The first pic is from September. The second is Friday morning.

Image: Source: Dawooduck via ski.com.au.

Rain continues this morning, with the main band moving towards the northeast. A line of storms has also formed in southern and central Sydney with hail falling in some suburbs and we'll keep you posted if these storms take a nasty turn.

Meanwhile please continue to check the Weatherzone warnings page here.