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Good-bye 2025
2025 was an overall wetter and milder than normal year for upper North Island. The most extreme weather events were the Mangawhai tornado 26th January and Ex-tropical cyclone Tam on 17th April. Here were some observation highlights across the upper North Island over the year up to 7am 31st December. Max Temp: 30.9°c , Whitianga, Coromandel Peninsula 7th Dec Min Temp: -1.2°c , Ahuroa, Auckland & Waihi, Coromandel 23rd July Ave temp for 2025: 16.6°c at our HGW climate statio
Dec 31, 20251 min read


Earthquakes near Great Barrier Island
GeoNet recorded a shallow magnitude 3.0 on the Cradock Channel fault line just north of Great Barrier Island at 11:40am today, which was also registered as felt on the Island. This was followed in the same location by a 2nd smaller shallow magnitude 2.0 at 11:45am. Today's M3.0 quake location is nearby to a M3.8 event that occurred on 11th March 1992. in recent year there was also activity in 2022 and 2021 .
Dec 7, 20251 min read


Great M8.8 Russian coast earthquake generates Pacific wide tsunami waves
On July 30, 2025, at 11:24:50 NZT, a magnitude 8.8 megathrust earthquake struck off the Kamchatka Peninsula, Russia, about 119 km...
Jul 31, 20251 min read


Gulf earthquake swarm reawaken by a magnitude 3.4.
The M3.4 earthquake occurred just to the north of the Hauraki gulf associated with the ongoing earthquake swarm off Whangarei. It was...
Jul 16, 20251 min read


One of the wettest Aprils on record
One of the wettest April’s on record for the upper North Island Notable monthly April rainfall totals for the upper North Island as of...
May 1, 20251 min read


Cyclone Tam: upper North Island impacts
Cyclone Tam impacted the upper North Island with severe gales and widespread flooding across Northland, Auckland and the Coromandel...
Apr 21, 20253 min read


Rare 'Fire rainbow' appears over Auckland
A rare 'Fire rainbow' was captured over Auckland yesterday afternoon. Technically known as a circumhorizontal arc its an optical...
Mar 28, 20251 min read


Mangawhai tornado - how it unfolded
Updated 31st January 2025: Mangawhai and the surrounding areas over the years has had its fair share of severe weather . Again they have...
Jan 26, 20252 min read


3 years on since the climate changing Tonga major volcanic eruption.
It's now 3 years on since the Hunga Tonga–Hunga Haʻapai 'VEI 6' submarine explosion that reached 57km into the mesosphere, sending...
Jan 14, 20251 min read


2024 - A year in summary
It is time to say good-bye to 2024 in what was a quieter year of weather and geological events for upper North Island compared to the...
Dec 31, 20241 min read


Te Aroha earthquake sequence awakens
This morning's Te Aroha shallow magnitude 3.2 earthquake on the Kerepehi Fault is the 3rd and strongest over the last 72 hours in the...
Dec 1, 20241 min read


M2.1earthquake in the central Hauraki Gulf just before a whale stranding
An interesting magnitude 2.1 shallow earthquake under the Hauraki Gulf this afternoon. It occurred on the extension of the Hauraki fault...
Nov 24, 20241 min read


Artificial Intelligence is taking weather forecasting by storm
Less than a year old, low resolution AI based weather models are already defeating physic based super computing models within a 7 day...
Jun 25, 20241 min read


The great solar storm of 2024
Between 7th to 9th May sunspot region 3664 blasted multiple X class solar flares towards earth. Initial radio blackouts occurred across...
May 16, 20241 min read


Upper North Island records its coolest March for 12 years
The early arrival of the polar jet stream has given the upper North Island the coolest March since 2012. Our climate station only started...
Apr 1, 20241 min read


Fallstreak hole formed over upper North Island
The rare 'Fallstreak hole' formation appeared in a group of cirrocumulus clouds this week over the upper North Island . It was caused by...
Mar 17, 20241 min read


2 years on since the climate changing Tonga major volcanic eruption.
It's been 2 years since the largest volcanic eruption of the 21st century (so far), occurred at the Hunga Tonga–Hunga Haʻapai, submarine...
Jan 17, 20241 min read


Good-bye to 2023
It is time to say good-bye to 2023 in what was a year of notable historical weather events for upper North Island. We will finish the...
Dec 31, 20231 min read


Waterspout touch down in the gulf
A waterspout touched down into the Gulf this morning off Orewa with the sunrise making the funnel glisten. Waterspouts are more common...
Dec 20, 20231 min read


The Asperitas clouds appear over the upper North Island
The rare 'Asperitas clouds' arriving over the upper North Island on Friday. The cloud type was officially added to the International...
Nov 19, 20231 min read
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