Last night, Mr Watts and his family were sheltering at a neighbour's home, but feared they would lose all their possessions that were open to the elements with the roof gone.
Pink Batts were strewn through trees and a large piece of tin was embedded in a tree as if it had been "cut with a knife".
The roof came off with a deafening crack.
"It's a nightmare, mate. It's the scariest thing I've gone through, I'm still shaken up," said Mr Watts.
He said his boys, Thomas, 13 and Sean, 14, had nothing and the family had no insurance. "We've got no home now, [it's] gone ... If it rains the furniture isn't going to be worth anything."
Despite that he said he felt lucky.
"I thought it was a small tornado ...
"If it was down a little bit lower we could have been in serious trouble."
If the roof had not been torn completely off it could have crashed through the lounge and bedrooms, he said.
The winds gusts reached 120km/h throughout the central and lower North Island and caused disruption throughout the day. The storm cut off Gisborne with almost all routes in and out of the district blocked by slips, trees or flooding for a couple of hours.
In flood-hit Northland, heavy rain and strong winds eased after Monday's storm dumped more than two months' worth of rain on some parts of the region.
WeatherWatch forecasters said another period of torrential rain and gale-force winds was expected today.
"This new low is rich in tropical moisture and brings yet again the threat for flooding, and this time flash flooding may also be an issue," Philip Duncan said.
"The ground is already saturated and the rain band that's coming down may be faster moving but it also contains much heavier bands of rain."
A few hours of torrential rain could lead to rapidly rising rivers and streams, he warned.
However, while Monday's downpour lasted 24 hours, this downpour would be "shorter and sharper" and expected to last only six hours.
MetService has issued a severe weather warning for much of the North Island.
Heavy rain was expected for Gisborne, Hawkes Bay and Wairarapa last night but severe southeast gales were expected to ease in Taranaki, Taupo and the central North Island high country, Wellington and Horowhenua Kapiti Coast, MetService said.
Mr Duncan said today's expected severe gales would build quickly in northeast Auckland and Northland, and then head south across Coromandel, Bay of Plenty, Waikato, the Central Plateau and Taranaki.
- Additional reporting: APNZ