“With those thunderstorms, you could be seeing localised rainfall rates of up to 10 to 25 millimetres an hour.”
Owens said the front is due to reach Hawke’s Bay around mid-afternoon, and should clear by late evening or overnight.
A severe thunderstorm on Friday brought some surface flooding to several communities already reeling in the wake of Cyclone Gabrielle.
A tree also temporarily ignited on Windsor Ave, Hastings, which appeared to have been caused by a lightning strike.
MetService meteorologist John Law said that the storm’s peak between 2pm and 3pm led the forecaster to record 22mm of rainfall in the space of two minutes.
By 3.15pm, the heaviest thunderstorms had cleared as the band moved out to sea. The rest of the afternoon and night consisted of sporadic showers.