About 50 people were evacuated to hotels after a tree fell on several blocks of flats in St Peter Port during Storm Goretti.
The roof also started coming off one of the blocks of flats in the Green Lanes and St Jacques area.
The residents of the flats were taken to two hotels by emergency services and civil servants after midnight.
Glass and other debris was flying around in the wind.
College student Zack was in Maison Haro with his father and “a few neighbours”.
He told Express they were evacuated to Hotel de Havelet just after 00:30.
Zack said he believed nearby Maison Grue and Maison Brock were also affected.
A States spokesperson said the tree that fell had “caused structural damage to the buildings”.
More than 60 trees were reported to have fallen on public highways overnight, but the States said the real figure was likely to be higher as the picture became clearer this morning.
Debris from Storm Goretti has been reported all over the island, including bricks from fallen walls, canoes, Christmas decorations, and even a lawnmower.