Reviewed at 8pm Thursday - low risk extended over more of Marlborough and Kaikoura. The front moves east across the northern North Island during Friday afternoon and evening, and there is an associated low risk of thunderstorms from Coromandel Peninsula to northern Gisborne/Tairawhiti as indicated on the chart. A cold trough and southerly wind change continues to move north along the east coast of the South Island reaching the southern North Island late afternoon, bringing a further low risk of thunderstorms to southern South Island and eastern areas from Canterbury to Wairarapa as depicted on the chart. There is a minimal risk of thunderstorms or significant convection elsewhere during the second half of Friday.