The strongest winds in two years blasted southern Tasmania last night as a powerful cold front barrelled over the state.

The front crossed Tasmania under the cover of darkness, causing a surge of dangerous winds across the state's south, west and central highlands.

Video: Satellite images showing the cold front crossing Tasmania during Monday night, before moving out into the Tasman Sea on Tuesday morning.

The strongest wind gust of the night was 148 km/h at the top of kunanyi / Mount Wellington shortly before 4:30am. This was the mountain's strongest wind in two years and the kind of gust you would typically find in the eyewall of a category two tropical cyclone.

Hobart's strongest gust of the night was 109 km/h at 4am, which was also the city's strongest wind gust in two years.

Other notable gusts from the night included 139 km/h at Maatsuyker Island shortly before 2am, 117km/h at Cape Bruny at 2:30 am and 87 km/h at Sheffield (strongest in two years).

The wind was strong enough to cause damage, with reports of at least one house losing its roof and power cuts affecting thousands of properties. The cold front is now moving out into the Tasman Sea, allowing conditions to gradually ease in Tasmania.

While there will still be some fresh winds around on Tuesday, damaging gusts are no longer likely and the severe weather warning that was in place overnight has been cancelled.