Convective Discussion
Isolated thundershowers continue across southern New Brunswick, northern/eastern Nova Scotia, and southern marine waters today. This activity will reach the Grand Banks tonight.
Technical Discussion
An upper low over the Eastern Townships this morning is supporting a surface low pressure system over southern Maine. A large area of rain ahead of these features extends from the Saguenay across the Maritimes to just south of Newfoundland. Based on the 12z sounding from Gray, Me, the instability in the cold pool is sufficient to supports elevated CB’s based around 10,000ft with tops above 35,000. Latest radar echo top products is a small cluster of thundershowers with these characteristics just north of the Minas Basin. Some of the soundings this morning showed precipitable water of 25-35mm. Widespread rainfall totals of 10-15mm have been reported , with peak hourly amounts of 11.5mm reported at YCX earlier this morning.
Regional impacts
NS/NB/NL/PEI/LAB: Brief localized mod-heavy rain..
Jean-Marc
