For the St. John’s region tonight, Environment Canada is forecasting periods of snow changing to freezing rain or ice pellets, and then changing to rain late this evening.
Environment Canada satellite image.
Rainfall amount 10 to 15 mm. Temperature rising to plus 5 by morning.
For Tuesday, periods of rain or drizzle ending near noon then mainly cloudy. Wind southwest 40 km/h gusting to 60.
Temperature falling to minus 1 in the afternoon.
Southwesterly winds gusting up to 100 km/h will diminish later this afternoon.
For a broader look, a low developing near the St. Lawrence River will move to lie near Anticosti Island by this evening, then track northeastwards across Labrador tonight.
Snow will develop over southern Newfoundland later today and will change over to rain this evening.
The rain will be heavy at times, with local accumulations up to 25 millimetres expected by Tuesday morning.
Additionally, in the region strong southeasterly winds with gusts to 110 km/hour are expected to develop late this afternoon as this low approaches.
Strong southwesterly winds gusting to 100 km/h will persist this afternoon over the Northern Peninsula due to an intense low pressure system over Northern Labrador.
For Labrador, snow will develop along the strait region early this evening and end before morning.
Snowfall accumulations of 10 centimetres are expected for coastal communities, however, accumulations are expected to be closer to 20 centimetres for higher elevations further inland, most notably the section of the Trans-Labrador Highway from Red bay to Lodge Bay.