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RainWatch – Monday 22nd January 2018

A subtropical northerly airflow continues to flow onto New Zealand today, moving around a large high centred far to the east of the country in the Pacific Ocean.

For the upper North Island expect random areas of showers, areas of dry also. There may be some rain at times for Northland. Overnight or more towards dawn on Tuesday heavy downpours with possible thunderstorms move in from the west, this area of rain could be torrential in areas.

The lower North Island sees the risk of a shower this morning, mainly in the west. This afternoon there is a higher risk of showers especially for inland areas and about the ranges of Wairarapa and Hawkes Bay, some of these showers could become heavy with a risk of thunder then easing later this evening.

For the upper South Island conditions are mainly dry, a shower or two may hang about Tasman at times during the day. Later this afternoon / evening showers develop about Mid and South Canterbury (especially inland about the foothills at first), some of these showers could become heavy with thunderstorms then clearing later this evening or overnight.

Rain for South Westland this morning, easing to showers this afternoon then clearing this evening. For Southland and Otago expect the odd shower for most, especially this afternoon for inland eastern Otago where some showers may become heavy then easing and clearing this evening.

Image – Monday 22nd January 2018 4pm MSLP / Rain map –


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