The following 24 hours across NL will be quiet across most of the province, with very little impactful weather. The exception will be parts of northern Labrador, where snow will fly through the 24-hour period. In fact, on Tuesday, it will move back toward Labrador West.
The only thing of note will be some flurries over the western sections of the Island.The next thing of note will be the long-duration winter storm that is set to arrive late Tuesday night or early Wednesday morning and continue into late Thursday or Friday for much of the Island and parts of Labrador. Ahead of this, the ECCC Weather Office in Gander has a Winter Storm Watch out for a good bit of the Island.
There is some uncertainty in exactly where the low will track, with relation to the Avalon. If it passes near enough, the snow may mix with or change to rain for part of the day on Wednesday, which would significantly impact snowfall accumulations. Meaning areas of the Avlaon that see any mixing would see amounts closer to 30 cm, rather than 50 or more. The rain will change back to snow later Wednesday if this happens. Precipitation for all other areas will likely remain as snow.
Remember, Winter storm watches are issued when multiple types of severe winter weather are expected to occur together.