Regional Impacts
Today
NB: Isolated thunderstorms for northwestern regions this evening bringing lightning and locally heavy downpours
NS/PEI/NL&LAB: None
Tonight
NB/NS/PEI: Isolated embedded thunderstorms bringing lightning and heavy downpours
NL&LAB: None
Saturday
NB: Isolated embedded thunderstorms bringing lightning, heavy downpours, small hail and strong wind gusts
NS/PEI: Isolated embedded thunderstorms bringing lightning and heavy downpours
NL&LAB: None
Convective Discussion
With a near quasi-stationary low pressure centre over central Quebec, an associated trough will slowly track through southern Quebec and into Maine and western New Brunswick today. Showers and isolated thundershowers ahead of this feature have been ongoing this morning over northwestern New Brunswick. Although more favourable dynamics remains further west over New England today, increasing precipitable water into the mid 30s and mean storm motion to the northeast with 0-6km shear of 30 KT, could make for sustained convection and locally heavy rainfall due to possible training of storms over the same area. The trough will bring showers and embedded thunderstorms slowly eastward tonight and into Saturday across the Maritimes. There is also a waterspout risk over the Gulf of St. Lawrence and southern Maritime waters Saturday into Sunday with a 10 deg temperature difference between 850mb and surface SST’s, deep convective cloud depths above 35,000ft and little directional shear.
Thunderstorm Outlook for Today
Thunderstorm Outlook for Tonight
Thunderstorm Outlook for Saturday
