FLOODING could hit some parts of the Hunter this week with meteorologists predicting the year’s biggest rainfalls and potential drainage havoc.
They say 100millimetres of rain could fall over the region in the next few days, due to onshore wind driving moisture into a trough developing near the coast.
Falls of more than 100 millimetres are expected along most of the state’s coastline, but some areas might reach double that figure.
The Bureau of Meteorology has already issued a heavy rain warning for the mid-north coast, but Weather Channel meteorologist Tom Saunders said similar conditions could spread to the Hunter.
‘‘Almost the entire NSW coastline can expect over 100millimetres of rain by Saturday, while some beaches ... are forecast to see 200millimetres,’’ Mr Saunders said.
There could be short-lived flooding along coastal rivers and streams but flash floods were a greater threat in urban areas where drainage systems could not cope with short bursts of heavy rain.
Hunter falls would peak between today and Thursday and could ease by Friday.
NEXT THREE DAYS
Today: Rain at times, 17-21
Tomorrow: Rain at times 18-22
Thursday: A few showers, 18-23