Yesterday evening's storm was just a taste of what is coming our way in the next few days. So, today is the calm before the storm.

The NSW SES has sent a warning for Northern Rivers residents to get ready for the possibility of heavy rainfall and severe thunderstorms for Wednesday and Thursday and leading into the weekend.

The Bureau of Meteorology are predicting slow moving thunderstorms across the Northern Rivers bringing heavy rainfall to localised areas with flash flooding possible. With the possibility of wet weather on the way, NSW SES Deputy Zone Commander Mark Somers urges residents to prepare their homes.

“Bring in or secure any outdoor items in the yard or on the balcony, check your gutters are clear and your roof is in good condition, trim any overhanging branches and take care when travelling in poor weather conditions.”

Mr Somers added, “The Northern Rivers has experienced drier conditions over the past 12 to 18 months and this rain event will be a welcome relief to many.”

“NSW SES urges residents and visitors to take care when driving in wet weather on the local roads and especially if you are driving in upper catchment areas where low lying causeways overflow and are dangerous to cross when flooded.”

“Its important that drivers slow down as roads may have trees, branches and debris covering them.”

NSW SES reminds people to never drive, ride or walk through floodwater as this is the main cause of death during floods.

The NSW SES and Bureau of Meteorology (BOM) are continuing to monitor the weather system closely.

Abra Shabren from the BOM said "there will be not much shower today but we should be aware of heavy rainfall and thunderstorm activity through Wednesday and Thursday".

"There is a slow moving thunderstorm system originating on the coastal areas and slowly moving inland", he added.

The BOM rainfall prediction is for 25-70mm tomorrow with Thursday delivering another 25-80mm. The rainfall will lessen on Friday and into the weekend.

Stay alert this week, listen to any updates and advice and monitor the Bureau of Meteorology website on www.bom.gov.au or through the Lismore App weather buttons (Weather / Weather Radar)