Regional Impacts
None.
Convective Discussion
An upper low northeast of Newfoundland will weaken and slowly pull east today. Warming between 850-700 mb will prevent any convection today.
Meanwhile, a warm front and surface low pressure centre will move across central Quebec and into western Labrador tonight. The low will track southeastward across southern Labrador early Sunday morning and over Newfoundland by Sunday evening. Showers will move into Labrador tonight but are not expected to produce any convection given warming at 700 mb. A trailing cold front on Sunday will track across the Gulf of St. Lawrence in the afternoon and over the eastern Maritimes in the evening. Although there will be some surface-based instability given strong daytime heating over the Maritimes, the area remains quite dry, with strong upper-level subsidence and a warm nose at 500 mb which should prevent any convection beyond isolated TCUs in showers. There may be a slight risk of an isolated thundershower near the centre of the low over the lower North Shore Quebec Sunday afternoon behind the 500 mb thermal ridge but 0-6km shear will be quite strong (70kts) which may inhibit development.
Thunderstorm Outlook for Day 1
Thunderstorm Outlook for Day 2
