Thunderstorm Outlook for Day 1
A chance for occasional heavy showers and some wind gusts for southwestern New Brunswick. Chance of isolated thundershowers for northeastern Newfoundland.
Convective Discussion
Basically there is a low in the Labrador Sea with a couple of troughs extending southwest into the Maritimes. Most of Atlantic Canada is under an inversion preventing any significant lift, with the exception of New Brunswick. There is a shallow inversion combined with some afternoon destabilisation. There’s also half decent moisture, with PWATs in excess of 30 mm, and dew points in excess of 20 C for southwestern New Brunswick. Afternoon surface CAPES may be around 400-800 J/kg. However, with shear being 12-25 kts for most regions, air mass pop-ups will probably be the rule for today.
For Newfoundland there is a chance of a thundershower or two this afternoon, if the daytime heating is high enough.
Thunderstorm Outlook for Day 2
