Storm Goretti has caused “hundreds of thousands” of pounds worth of damage to the ground at Champ side Cornish Pirates.
The roof on the main grandstand at the Mennaye Field has had large chunks torn off it by the strong winds.
The area was hit by gusts of around 90 mph on Thursday and into the early hours of Friday.
“I’m just incredibly grateful that the storm came at night and there was nobody on site because it’s incredibly dangerous,” chief executive Sally Pettifer told BBC Sport.
“The roof is full of holes, great sections of it have been blown off, they’re buried in the pitch, they’re all around the site.
“The first thing we’re going to do is secure the site, so I really do implore people not to come down, it’s dangerous.”
The club is due to meet with insurers later on Friday, with costs that could go into hundreds of thousands of pounds.
While Pettifer is confident they are covered, repairing the damage as soon as possible will have a major cashflow impact on the club.
Pirates’ next game is at home to Ampthill on Saturday, 24 January, and Pettifer said they have a contingency should the Mennaye not be safe enough to play at.
“We’ve already reached out to local clubs, Redruth and Camborne, the people I’ve spoken to have been incredibly welcoming,” she added.
“They’ve looked, they don’t have matches on our next home match, 24 January, so if we needed to move, they’re willing to host us.
“But it might be that the repair plan says we can clear the debris and potentially have that stand available, as long as everybody comes with an umbrella, it would be a stand without a roof.
“But as of this moment, we do not know.”
