Thunderstorm Outlook for today
Regional Impacts
Isolated Non-severe thunderstorms are expected today with sporadic downpours over southwestern NF and the Burin.
Slight risk of a thunderstorm over the Cape Breton Highland.
Convective Discussion
A cool and dry northwesterly flow prevails over the Maritimes this morning. Over the Gulf of St. Lawrence, a cold low is triggering widespread showers mainly over southwestern NF and the Burin. The airmass is unstable enough (CAPE values of 200-300 J/kg) to support thunderstorm activity. One such cluster is currently detected by CLDN at the intersection of Cabot strait, southwest coast and Banquereau regions. A few lightning flashes were also detected along the coast east of Port-aux-Basques. The instability will be maintained ahead of the cold pool aloft. Some of the forecast guidance is suggesting a slight risk of thunderstorm over the Cape Breton Highlands in response the approach of the cold pool and some extra orographic lift.
Thunderstorm Outlook for Friday
Some of the global guidance is suggesting the possibility of some shower activity associated with a weak surface feature
over central NB.