MetService New Zealand
02/21/2017 at 02:08. Facebook
Here is Chester with your forecast for tomorrow. Check out the other forecast videos at [ Link ] ^JR
Shaping up to be a summery day across New Zealand with maximums in the 20s. Christchurch will be hot 30 degrees. Rain forecast for the West Coast with a Rain Watch from this afternoon to Wednesday morning. Keep up to date with this warning at [ Link ] and the forecast for your place at place [ Link ] ^JR
Your chances of summer weather over the next few days. My pick is New Plymouth to Wellington. More detail at ^GG
MetService meteorologists Lisa and Chester are chatting live now with the Washington DC based Capital Weather Gang. Send in your questions on the live feed [ Link ]
MetService New Zealand
02/19/2017 at 21:15. Facebook
Fantastic shot of Kelvin-Helmholtz Waves shot by Carl Gadsby in Palmerston North yesterday.

How do these waves form? Find out from our blog:
[ Link ]

Simply put, this is caused by a difference in wind speed between a moist layer of air (below) and a drier layer of air above. If conditions are just right, then the difference in wind speed between the two layers creates...
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MetService New Zealand
02/18/2017 at 22:53. Facebook
Rain over the weekend.
There has been a fair amount of rain that fell since Friday especially over the North Island. A trough became slow moving over the Island wedged between a high east of the Chatham Islands and another weaker one in the Tasman. This produced a continuous feed of moist northeasterlies across the North Island and scattered falls onto the top and east of the South island,...
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MetService New Zealand
02/18/2017 at 13:59. Facebook

Humid weather across the upper North Island is not unusual during summertime, but this has not been a usual summer. We’re finally seeing some northeasterlies of sub-tropical origin bringing muggy conditions to the North Island, and particularly north of the Central Plateau.

As of 2AM, large parts of Northland, Auckland, Coromandel and Bay of Plenty have yet to fall below...
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MetService New Zealand
02/18/2017 at 01:18. Facebook
We have issued a Thunderstorm Watch for the lower North Island till 7pm this evening. We've already had a few lightning strikes near Wanganui, Foxton and the Tararua Ranges. A combination of moist air, heating and converging winds is a recipe for Thunderstorms.
[ Link ] ^JR
MetService New Zealand
02/17/2017 at 21:24. Facebook
Heavy downpours last night over the east of the North Island including the Kaikoura coast which collected over 120mm. The rain has eased but we are expectIng thunderstorms to spark up this afternoon over the central North Island. Looking rather gloomy over the North Island and upper South Island as a moist northeast flow produces thick cloud blocking out the sun. A lot better for the runners...
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MetService New Zealand
02/17/2017 at 20:19. Facebook
The SSANZ Round the North Island yacht race starts on Saturday. The first leg is from Auckland up to Mangonui. The sailors will likely meet the lee trough up the coast. You can find out more about it at [ Link ]. ^GG #SSANZRNI2017.
MetService New Zealand
02/17/2017 at 02:08. Facebook
Special Friday forecast for a (mostly) rainy weekend

Although the weather may be a little.. rough this weekend, cheer yourself up with this special forecast, then head to to find out when the sun will next appear where you are. ^TA
MetService New Zealand
02/16/2017 at 23:14. Facebook
Planning your weekend?

There's a lot of rain around the North Island this weekend, but the south of the South Island gets the best of the sun. It'll be a great weekend to be outside in Invercargill, but people in the North will need to pick their times more carefully to avoid the rain. Use this handy chart, or check the two-hourly rainfall charts for your town on . ^TA
MetService New Zealand
02/16/2017 at 19:32. Facebook
Heavy falls in Northland and Auckland moving south

Falls of 20mm per hour or more have been recorded in Northland and Auckland in the last few hours, and are sinking south towards the Coromandel, Waitomo, western Waikato and parts of the Bay of Plenty. Expect some heavy falls there before midday today. This image shows accumulations of up to 35mm in parts of Auckland in the last 6 hours. ...
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MetService New Zealand
02/16/2017 at 02:46. Facebook
Lots of rain over the North Island tomorrow

Here's Chester with the Severe Weather Watches for possible heavy falls. More details at [ Link ]

Possible thunderstorms for the far north as well so check for these at [ Link ]

MetService New Zealand
02/15/2017 at 23:44. Facebook
Welcome rain for the north

Today's radar shows good rainfall pushing across the upper North Island, and reasonable numbers are forecast over the rest of the island and also the northeast of the South Island. Up to 75mm has fallen in Northland up until midday today, and more is likely.

Tomorrow the risk of thunderstorms rises over the north of the North Island, and then the risk spreads...
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MetService New Zealand
02/14/2017 at 23:25. Facebook
Fires from space

Here at MetService we spend hours looking at clouds from both sides, often heading off to our roof to take photos to share on social media, as well as studying them from above using satellite imagery.

Apart from what we show on our site at [ Link ]
There are plenty of other good sites on the internet to look at and one of the better ones is NOAA's modis...
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Reluctant to get in the sea this year?

It is no surprise as you can see from the current sea surface temperature and anomoly (difference from average for this time of the year) maps. It has been noticeably colder taking a dip in the sea this year, especially on the western beaches.

Of course shallow harbours and estuaries do warm up with a daily dose of sunshine, but overall it has been...
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This video produced for the World Meteorological Organisation touches on the importance of climate forecasting for the nations of the South Pacific. You can find out more about how New Zealand plays a part in this work at our blog: [ Link ] ^JB
A very warm, moist air mass spread across the North Island today. This air originated over Australia and was transported over our way via a mechanism known as a “warm conveyer belt”. Australia has been experiencing a heat wave, which is why the air over us is so hot, and this has caused a number of wild fires. The smoke from these fires has been entrained by the warm conveyer and is visible in...
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A complex trough over the Tasman Sea is moving eastwards, preceded by a strong and very moist northwest flow. Heavy rain is affecting the west of the South Island and the Tararua Range. The rain is expected to ease in most places this afternoon or evening, although some places may receive a further 80mm on top of what has already fallen.

In addition, severe northwest gales are affecting...
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