Regional Impacts…
Today
NB/NS/PEI/NL/Labrador: A chance of non-severe thunderstorms with small hail.
Tonight
NS/PEI/NL: A chance of a thundershower.
NB/Labrador: None
Thursday
NL/Labrador: A chance of non-severe thunderstorms with small hail.
NS/NB/PEI: None
Convective Discussion
A trough of low pressure will move across New Brunswick this afternoon and across Nova Scotia and Newfoundland overnight. MLCAPE values near 500 J/kg are expected ahead of this trough with effective shear of 40 to 50 knots. The limited CAPE should restrict any potential weather to near severe only. The wild card is the strong approaching upper jet which will have northern New Brunswick in the favourable left exit region. All that being said, moderate winds gusts, small hail and downpours are possible in the moist airmass ahead of the trough (precipitable water of 30-40 mm). Over Labrador, a descending cold pool will give scattered thundershowers with the potential for small hail and gusty winds. Over Newfoundland, a slowly departing trough with give a chance of thundershowers this afternoon and into the late evening. On Thursday, the cold pool over Labrador will again give non-severe thunderstorms with gusty winds and a chance of small hail associated with the cold pool low freezing levels.
Thunderstorm Outlook for Today
Thunderstorm Outlook for Tonight
Thunderstorm Outlook for Tomorrow
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