Friday, August 1, 2025

Convective Outlook Valid for Today, Tonight and Tomorrow

Regional Impacts

Today: Risk of some non-severe pop up thundershowers in parts of Labrador this afternoon.

Tonight: No thunderstorms forecast.

Tomorrow: Risk of some non-severe pop up thundershowers in southeastern Labrador and the Northern Peninsula tomorrow afternoon.

Convective Discussion…

A quiet day is in store for most of Atlantic Canada today as a ridge of high pressure settles into the central Maritimes. Over Labrador, a weakly unstable environment may be enough to trigger some non-severe pop up thundershowers today. The 12Z Goose Bay sounding this morning showed some relatively weak lapse rates, though a cool airmass aloft will only require convective temperatures of around 16 or 17 degrees. However a lack of moisture (PWATs <15 mm) and effective shear (10 to 20 knots) will limit the intensity and lifespan of any storms that do fire today.

Tomorrow a similar environment is expected over southeastern Labrador, where the risk once again exists for some non-severe pop up thundershowers.

Thunderstorm Outlook for Today

Thunderstorm Outlook for Tonight

Thunderstorm Outlook for Tomorrow

Forecaster: Copp

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