Police are appealing for help to find a Hawke's Bay mother and her two children who have been missing for nearly a month.

Megan Lee, 45, and the children were last seen in Whangārei on February 11.

Police were concerned for the family's wellbeing. The trio have not been in contact with Hastings-based family members since February 9.

NEW ZEALAND POLICE Megan Lee, 45, is missing, along with her two children. Police have concerns for her welfare.

The family have connections across the upper North Island, including Hawke's Bay, Auckland and Northland.

They had been travelling in a silver Toyota Corolla station wagon with the registration LCG323.