The wet end to the week is a farmer's dream, but the front is set to clear tomorrow.
The Coromandel is currently under a severe weather warning, with up to 80mm of rain expected, whereas the Waikato can expect lighter rain and perhaps thunder.
MetService meteorologist John Law said the change in the weather was brought in by ''a real moist and humid northerly flow'' and an area of low pressure to the West.
''That's dragging the air in from the sub-tropics, and that's bringing a fair bit of moisture, cloud, and real humid and muggy conditions.''
The Coromandel's north-facing and higher areas would bear the brunt of the weather, he said.
Waikato gets away with ''hefty showers'', but thunderstorms were appearing in the South of the region.
''It's warm temperatures, it's humid air, it's the perfect conditions for some thunderstorms to form.''
And farmers around the Waikato will welcome today's steady rain. Water tables were low, and the past 12 months had only brought around half of the usual annual rainfall so last season's drought was playing on farmers' minds, said Waikato Federated Farmers president James Houghton.
Rainfall had been varied throughout the region, with certain areas benefiting from isolated thunderstorms, but the Morrinsville and Eureka areas, and some areas north of Hamilton, had missed out.
''A lot of farmers are ... very concerned and will just take a very cautious approach heading forward.''
Mr Houghton also said people who rely on a rainwater supply had been challenged recently.
But the rain gauge on his Pukeatua area farm measured over 20mm before 10.30 Thursday morning.
''It's a nice day,'' he said. ''If it continues raining like it is today it's basically is going to keep grass growing for another three weeks... we should be right until New Year.''
Plus it would boost the growth of supplement crops - which will feed stock in the event of a dry summer.
Mr Houghton said farmers would be wishing for about three more ''nice tropical storms to come through about a month apart'' - or at least regular, normal rainfall - and he urged everyone to manage their water sensibly.
But the warning-worthy wet weather isn't set to last.
Mr Law predicted cloud and ''the odd light shower'' as the front moved on throughout the day tomorrow.
Saturday morning was expected to bring morning rain which would clear for the afternoon, although Sunday may bring some showers.
- © Fairfax NZ News
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