Wind and rainfall warnings remain in effect for much of the west and south coasts of the province.
Environment Canada also advises the rainfall will cause significant snow melt over the region which could result in local flooding.
For the Channel-Port aux Basques and Wreckhouse areas, and south coast areas, rainfall accumulations of 40 to 70 millimetres are expected by early Friday morning.
An intensifying low pressure system over southern Quebec will track northeastward to lie off the north Labrador coast by Friday morning. A warm front associated with this system tracked across Newfoundland overnight, bringing with it significant wind and rain for southwestern Newfoundland.
The associated cold front is expected to track across Newfoundland tonight.
Rain over southwestern Newfoundland is expected to taper to showers or drizzle later this morning.
Close to 50 millimetres of rain has fallen in some areas of southwestern Newfoundland and a further 15 to 20 millimetres is expected by early Friday morning.
Southerly winds are expected to re-strengthen later today ahead of the approaching cold front. Wind gusts of 110 km/h will develop in the Wreckhouse area this afternoon and increase to 130 km/h this evening.
Wind gusts of up to 100 km/hour will re-develop this evening along parts of the west coast and spread to parts of the south coast.
Large waves and pounding surf are expected to develop this evening along the west coast of Newfoundland and persist overnight. These waves have the potential to produce minor coastal flooding during the overnight high tide.
For the St. John’s region today showers, amount 5 mm with fog patches. Wind southwest 50 km/h gusting to 70. High 7 C.
Tonight showers, amount 5 to 10 mm with fog patches. Wind southwest 60 km/h gusting to 80. Low plus 3. For Friday, showers ending in the morning then a mix of sun and cloud. Fog patches dissipating in the morning. Wind southwest 50 km/h gusting to 70. Temperature falling to plus 1 in the afternoon.