Grass clippings reveal lockdown's dramatic carbon cut
Tiny blades of grass capture the CO2-slashing effect of last year's Covid-19 lockdown.
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Latest fromNiwa
Half full: Why are Auckland's dam levels still dismally low?
Weekend deluge hoped to hoist Auckland dam levels up from just over 50 per cent capacity.
'Uphill battle': Parts of NZ dangerously dry with no immediate end in sight
Akaroa farmer Hamish Menzies said they are making a plan for it if it doesn't rain soon.
Auckland water reservoirs near record lows
Auckland reservoirs were just 52 per cent full this week.
Mid-month deluge expected amid warmer slide into winter
NZ is in for another soaking later this month - but not before some fine Easter weather.
'Mother nature's energy drink': Why NZ is getting soaked
NZ is in for some wet, wild weather over coming weeks. What's caused the abrupt change?
Satellite view shows Raoul Island before and after quakes, tsunami
Satellite images appear to show fresh landslides on Raoul Island after Friday's quakes.
'Weather roller-coaster' for Wellington this autumn
Niwa predicts a season of "variability" across the country this autumn.
Sticky nights, and violent skies: More thunderstorms possible for North Island
Sticky days and nights to hang around a little longer.
Northland swamp kauri used by researchers to find out when Earth switched poles
Ancient Northland swamp kauri shows breakdown of Earth's magnetic field 42,000 years ago.
NZ's ancient kauri yields major scientific discovery
Ancient swamp kauri records reveal breakdown of Earth's magnetic field 42,000 years ago.
Summer heat set to roll on amid another northern dry
Summer-like weather set to linger into autumn in already-parched parts of NZ, Niwa says.
Secrets of the deep: How many sharks are swimming in our waters?
The global shark and ray population has declined by a worrying amount.
Rare weather: Three tropical cyclones tracking north of NZ
Doesn't happen often, but minimal risk to New Zealand for now.
NZ's weird summer: Drought in the north, drenched in the south
January's feast-or-famine rainfall leaves south saturated and far north in severe drought.
The best and the worst: Who's had the most sunshine so far this year?
Good day sunshine? Some towns and cities have enjoyed 50 per cent more sun than others.
Explained: The weird La Nina flavouring your summer
NZ's north should be wetter right now, and the south drier. Blame it on a strange La Nina.
Summer outlook: Unusually hot weather in store, as north dries out again
NZ can expect above-average temperatures for the rest of summer, as north dries out again.
Danger looms as NZ beaches heat up again - and may keep warming
After cooler December, NZ coastal waters are heating up again. Will they keep warming?
Thunderstorm threat looms for Nth Island as holidaymakers start long crawl home
It is a mixed bag on the weather front today.
New Zealand scientists to study sperm whales in Antarctic voyage
NIWA will embark on its third voyage studying the elusive creature.
Severe thunderstorms dump hail and cause flash flooding
A severe thunderstorm warning has now been issued for Gisborne and Wairoa.
Your Christmas Day weather: The best spots to be
Some Kiwis will be hitting the beach, while some might even have to get the fire going.
30C scorcher: NZ set to swelter in the sun; forecasters also on cyclone watch
Some spots could hit 30C this week, with warm, sunny weather in store for most regions.
The southerly switch: Muggy nights move out for cool change
The southerly change will likely bring frosts, or snow, to some areas of the South Island.
Heatwave bypasses windy Wellington this week
The country's heatwave will not be making a stop in the capital this week.
Incredible rare cloud formation spotted over Auckland skies
The official name for the clouds is Kelvin-Helmholtz.
It's the first day of summer! What weather lies ahead?
December 1 is officially the first day of summer.
Summer forecast in the capital 'welcome news for the average Wellingtonian'
Six minutes shy of the gloomiest November, summer promises warmth for Wellingtonians.
Even after deluges, remnants of Auckland's big dry remain
Hold-out pockets of drought spread around Auckland linger after biggest dry in 25 years.
New analysis reveals NZ's 150-year climate transformation
All of NZ's coldest years happened before 1933 - and its warmest have come since 1998.
Dry summer on the cards for parts of Canterbury
Christchurch has had over 150mm less rainfall than the yearly average.
Another marine heatwave forecast
A marine heatwave this summer would be the third in four years.
Anatomy of a deluge: What caused Napier's big downpour?
Napier deluge came with unfortunate atmospheric collision and a climate change tail-wind.