It’s the second day of wild, wet weather for parts of NSW, with more than 200mm of rain expected to hit some towns in 24 hours.

The weather bureau issued a severe weather warning on Thursday morning, saying very heavy rainfall was expected on the Mid North Coast and in parts of the Northern Tablelands, which could lead to flash flooding. The earlier severe weather warning for the Hunter region was cancelled just after 10am.

The State Emergency Service received about 800 calls for assistance overnight, including five flood rescues, and the bureau expects 100mm to 200mm to fall in the warning area through Wednesday night and into Thursday.

A spokesman for the SES said it was expecting a steady call volume on Thursday and had 250 volunteers in the area supported by the Rural Fire Service, Fire and Rescue NSW and NSW Police.