Regional Impacts
Today: Risk of some isolated thundershowers in Newfoundland this afternoon. Locally heavy downpours are the main risk.
Tonight: No thunderstorms forecast.
Tomorrow: Slight chance of an isolated thundershower over western New Brunswick in the afternoon.
Convective Discussion…
As a ridge of high pressure dominates the Maritimes today, a weak shortwave will cross Newfoundland bringing the risk for some isolated thundershowers. Meager MLCAPE values (<500 J/kg) and weak bulk shear (15-20 knots) will keep any storms from becoming severe this afternoon, but a few locally heavy downpours are possible. An additional risk area exists in southwest Labrador, associated with a broad trough extending from western Labrador to southern Ontario, but there is a less conducive environment here.
Tomorrow, the above mentioned trough will slowly move east reaching western New Brunswick late in the day. This will bring the slight risk of some isolated thundershowers to extreme western New Brunswick late tomorrow. Most of the activity is expected to remain west of the Maine/New Brunswick border due to the timing of the trough.
Thunderstorm Outlook for Today
Thunderstorm Outlook for Tonight
Thunderstorm Outlook for Tomorrow
Forecaster: Copp
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