Gloucester Street is now back open after engineers made the roof above the Hospital Granite Block safe.
Engineers were called just after 10 am after reports of an 'unsafe building structure' caused by the strong overnight winds.
It was then revealed that parts of the waterproofing on the roof of the Granite Block hospital needed to be checked urgently because strong winds caused parts of the flashing to loosen.
After around three hours of work, the roof was made safe so Gloucester Street and Newgate Street could reopen.

Credit: Jersey Fire & Rescue
All patients with hospital appointments can now attend as normal.
Health and Community Services has thanked everyone for their patience during this incident and apologised for any inconvenience caused.

Battle of Flowers made free for islanders again in 2026
More direct flights from the Channel Islands to Tenerife this winter
'Some men are just giants' Jersey remembers David Kirch on day of funeral
£1.5M donated to Jersey charities from dormant bank accounts
Passenger numbers already up ahead of seasonal services resuming
Jersey International Motoring Festival gears up for an extra day
Unbeaten Bulls women three more wins away from promotion
Jersey mixologist to head to cocktail World Championships