A heavy rain watch was in force Sunday for Northland and Auckland including Great Barrier Island.
The watch is until 6pm in Northland and 9am Monday in Auckland.
A Heavy Rain Watch in in force for Auckland, valid until 9am Monday.
— MetService (@MetService) April 27, 2025
Northland remains under a Heavy Rain Watch until 6pm today.
There is currently also a Severe Thunderstorm Watch in force for Northland.
Keep up to date here https://t.co/qHyE5zzql5… pic.twitter.com/VB3UzUdtmY
MetService said there was the potential for localised downpours of 25 to 40 mm per hour, which could occur with or without thunderstorms.
Alec Holden of MetService said the Far North town of Kerikeri had taken a pounding, with 90mm of rain falling within half a day.
"Kerikeri has received significantly more than half of their monthly rainfall in a 12 hour period. On top of that, in April so far, they've received 488 millimetres."
However, this was not necessarily unusual for the area, he said.
"New Zealand's tropical cyclone doesn't end until the start of May so these sorts of very wet northerly systems moving down over the country and drenching places like Kerikeri is not unusual, however, the fact they've had two in a row, more or less back to back ... is definitely unusual and not something you see particularly often, and the rainfall statistics back that up pretty much".
The unstable weather system was prone to producing thunderstorms, and was moving down the country to parts of the South Island before moving off to Antarctica, he said.
Bay of Islands Golf Club in Kerikeri saw some additional water hazards caused by the downpour. Photo: Facebook / Bay of Islands Golf Club
Bay of Islands Golf Club in Kerikeri said on Facebook they had 124mm of rain overnight and were expecting more.
The post showed some additional water hazards caused by the downpour.
Bay of Islands Golf Club in Kerikeri has been flooded by the downpour. Photo: Facebook / Bay of Islands Golf Club
Driving conditions
A road in the Far North that recently reopened last Christmas after a two-year closure suffered another setback.
The Mangamuka Gorge on SH1 from Kaitaia to Okaihau was closed Sunday after debris came down onto the road.
A detour was in place.
The road had only been open for four months, after a storm in August 2022 triggered dozens of damaging slips, closing the gorge until the end of last year.
Flooding had also made driving conditions in Northland difficult in many areas on Sunday.
A tree fell onto power lines, knocking out electricity to 73 customers at Parihaka in Whangārei.
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