Wellington City Council spokesman Richard MacLean says so far the capital seems to have escaped unscathed, however if people return to their offices tomorrow to find damage, the Council would like to know.
Dairies reported stock dislodged from shelves in the shake and workers in central Wellington buildings dived under desks and into doorways as the shake built to a rolling climax.
Newtown resident Donald McDonald said he felt the rumbling for about 10 seconds before a larger jolt.
Cook Strait ferries are running as normal this morning with no reported damage to the ports in either Picton or Wellington.
Port Marlborough says its engineer decided last night's quake wasn't big enough to have damaged the Picton infrastructure.
Geo-hazards duty officer Dr Tony Hurst said about 1600 reports were registered with GeoNet within minutes of the shake.
"Generally, the area that felt it the most was Marlborough, across to southern Wairarapa," Hurst said.
"An event of this size can be felt quite widely, depending on what you're doing at the time. If you're sitting very quietly then you are far more likely to sense something."
Hurst said the depth of the earthquake, at 60km, meant there were not likely to be many aftershocks.
Facebook comments posted nervous reactions. Alastar Scarle wrote: "A tad unnerving when your watching tv on the couch and your xmas tree decides he's sexy and he knows it and does a wiggle wiggle." Wrote Mark Fairey: "Sharp jolt and then an extended rolling quake. Doesn't appear to be any damage at our place."