Yellow Rainfall Warning Issued for Southwest Coast of Newfoundland
Environment Canada has issued a rainfall warning for the southwest coast of Newfoundland, with 20 to 50 mm of rain expected to cause significant runoff on frozen ground.
Alert Details
Environment Canada has issued a yellow rainfall warning for the southwest coast of Newfoundland. This alert is triggered by a strong low-pressure system moving through the region, bringing significant precipitation and potential flooding risks due to frozen ground conditions.
Affected Areas
The primary impact zone includes the southwest coast of Newfoundland, specifically Channel-Port aux Basques and the surrounding vicinity.
What You Should Do
Residents are advised to monitor local forecasts and alerts closely. Because the ground is frozen and covered in snowpack, it has a reduced ability to absorb water. Be prepared for localized flooding in low-lying areas and pooling water on roadways. Streams and rivers may run significantly higher than normal due to increased runoff. To report severe weather, contact NLstorm@ec.gc.ca or use the hashtag #NLwx on X.
Expected Conditions
Total rainfall is expected to range between 20 and 50 mm, with higher amounts possible in some localities. Rainfall rates may reach up to 5 mm per hour. The weather event will begin as snow before transitioning through a period of ice pellets and freezing rain tonight, eventually turning to heavy rain by Thursday morning. Significant runoff is likely due to the combination of rain, snowpack, and frozen ground.
Timeline
The rainfall warning is effective from Thursday morning through overnight Thursday night. The transition from wintry precipitation to rain is expected to be complete by Thursday morning.
Source: ECCC Official Notice