Convective Discussion
At the surface, a cold front stretches north-south over eastern portions of Newfoundland. An upper cold low will remain parked over the lower Quebec North Shore today, eventually moving east of Labrador Tuesday.
A cluster of lightning associated with the cold pool persists this hour over southeastern Labrador, and this activity is expected to continue well into the afternoon. An upper trough extending southward from the upper low along the west coast of the island will move across central regions this afternoon triggering isolated thundershowers ahead of it. The main threat with these storms is brief heavy downpours and gusts up to 70 km/h.
Tranquil weather conditions are expected across the rest of the Atlantic provinces this afternoon.
Regional Impacts
Newfoundland: potential for brief heavy downpours (20 mm) for northern, central and eastern regions of the island
Labrador: potential for brief heavy downpours (20 mm) over southeastern regions
NB, NS and PEI: Nil
Jean-Marc