Regional Impacts
Today
NB: Scattered strong to severe thunderstorms.
Labrador: isolated to scattered thundershowers in the west.
NS/PEI/NL: isolated thundershowers.
Tonight
MRTMS: None.
Labrador: isolated thundershowers.
Sunday
NB/NS/PEI/Labrador: isolated thundershowers
NL: None.
Convective Discussion
An approaching cold front will track across New Brunswick later today and Nova Scotia on Sunday. There is a fair amount of shear (30 to 40 knots and linear) and the cape is 500-1000 J/kg. Additionally, areas of western NB and southern Labrador are in the favourable left exit region of an upper level jet. PWAT values of 25-35 mm will give downpours. Guidance is suggesting hail of 1-2 cm. Dry mid levels support the model guidance of wind gusts to 50 kts.
Garden variety pop-up thundershowers are possible on Sunday. Cape values due not look very high but shear is high and my be too strong to maintain cells.
Thunderstorm Outlook for today
Thunderstorm Outlook for tonight
Thunderstorm Outlook for Sunday
