A strong earthquake registered by the GeoNet as M6.3 hit Cook Strait, New Zealand at 06:38 UTC (19:38 LT) on February 15, 2023. The agency is reporting a depth of 50 km (31 miles). USGS is reporting it as M5.7 at a depth of 74.3 km (46 miles); EMSC M5.7 at a depth of 67 km (41 miles).
New Zealand’s North Island has been severely impacted by Cyclone Gabrielle over the past couple of days, with floods, landslides, and ocean swells leaving many people stranded on rooftops. The storm, which caused extensive damage to homes and infrastructure, also closed numerous roads, canceled hundreds of flights, and left about 225 000 people without power. At least 4 people have been killed.
A deep earthquake registered by the USGS as M6.1 hit Kermadec Islands, New Zealand at 09:18 UTC on February 13, 2023. The agency is reporting a depth of 374 km (232 miles). EMSC is reporting the same magnitude and depth.
Despite being downgraded from a tropical cyclone, Gabrielle is intensifying and spreading strong winds and heavy rain across a wider area affecting the whole of the North Island in some way.
Thousands of buildings in New Zealand’s Auckland area are currently unsafe for living after the region was hit by extreme rainfall and severe flooding at the end of January. The amount of rain that fell in a matter of days made January 2023 Auckland’s wettest month in at least the last 170 years. The flooding has put the public’s focus on nature-based alternatives to traditional stormwater systems.
Tropical Cyclone “Gabrielle” has formed in the Coral Sea as the 3rd named storm of the 2023 Australian region cyclone season. The forecast track takes it near Norfolk Island as a severe category 3 before moving toward New Zealand. The cyclone could bring more rounds of heavy rain to parts of North Island, New Zealand, particularly the Auckland area where extremely heavy and record-breaking rainfall amounts were registered recently.
Another atmospheric river event is forecast to bring more heavy rain across parts of New Zealand’s North Island in the coming days following an unprecedented rainfall event that brought severe flooding to the Auckland area and left 4 people dead on January 27, 2023.
The presence of a low level jet (LLJ), or strong wind in the lower atmosphere, combined with tropical moisture to create persistent heavy rain in the Auckland area on Friday, January 27, 2023, resulting in widespread severe flooding, destruction and casualties.
Another slow-motion earthquake, or “slow slip event,” is now underway on the Hikurangi subduction plate boundary offshore the North Island’s east coast. The amount of slow slip movement during the last month has released energy equivalent to a magnitude 7 earthquake.
After a run of particularly wet weather for New Zealand’s Gisborne region, one location has beaten its record for the highest January rainfall since 1937.
