There was a severe earthquake centred near Seddon (adjacent to Blenheim) at 1631 this afternoon, the 16th, of ~6.6 magnitude. PGA at the site 0.75. Significant damage to local structures. Only minor damage reported (so far) in the nearby larger city of Wellington.
Numerous strong to severe aftershocks throughout the afternoon. geonet.org.nz/quakes/region/wellington/felt
Aftershocks expected to continue, with an estimated ~30% chance (based statistically) of another severe shake within the next 24 hours.
Just a heads-up to anyone visiting.