Heavy rain on the way this week
low over the Tasman Sea is expected to drift onto the North Island later this week. An associated frontal rainband should move southwards over the upper North Island during Tuesday, preceded by a strong, moist northeast flow. There is a moderate risk of heavy rain accumulating to warning levels in Northland,
northern Auckland, Coromandel Peninsula, western Bay of Plenty and Rotorua during Tuesday, with a low risk of significant amounts of heavy rain over the remainder of Auckland, northeast Waikato and eastern Bay of Plenty.
There is also a low risk on Tuesday that the strong northeasterlies could gust severe gale in localised places in Waikato, Waitomo and Taumarunui, and a moderate risk that the moist northeast flow could bring warning amounts of heavy rain to Nelson on Tuesday and Wednesday.
From Wednesday to Friday the frontal rainband is then expected to drift south over central New Zealand, while the low should move onto the North Island during Thursday. There is a potential for significant amounts of heavy rain in Gisborne and Hawkes Bay during Wednesday and Thursday, especially about the ranges, and in Wairarapa and the Kaikoura Coast on Thursday and Friday. The risk of heavy rain accumulating to warning levels in these areas is considered low.
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