Regional Impacts
Newfoundland and Labrador: No thunderstorms expected.
Nova Scotia and PEI: No thunderstorms expected today, tomorrow scattered weak thunderstorms possibly giving 10 to 20mm of rain.
New Brunswick: Weak thunderstorms over northern areas today, spreading southward tomorrow with 15 to 20mm of rain possible in heaviest showers.
Convective Discussion
This is the first official thunderstorm outlook of the season, and it’s starting off relatively quiet. A weak surface trough moving slowly across the Maritimes will bring a low chance of thunderstorms to northern New Brunswick today.
Tomorrow, that surface trough will align with a weak upper-level trough, leading to a slightly increased potential for showers and thunderstorms overall. Southern New Brunswick, northern Nova Scotia, and possibly PEI could receive upwards of 15–20 mm of rainfall, although there remains some uncertainty as to whether those amounts will be realized.
The exact location and intensity of precipitation may shift as the upper low evolves tomorrow.
Thunderstorm Outlook for Today
Thunderstorm Outlook for Tonight
Thunderstorm Outlook for Tomorrow
