Regional Impacts
NB: Low chance of thunderstorms this evening, with little to no impacts expected.
NS: Some thunderstorms possible today, mainly over eastern areas. Locally heavy downpours and gusty winds possible.
Labrador: Low chance of thunderstorms today, no significant impacts expected.
Newfoundland: Low chance of thunderstorms today. Western/interior areas may see locally heavier rain.
PEI: Slight risk of thunderstorms today, with brief heavier showers possible.
Convective Discussion
A weak low pressure system over the region will continue to track northeastward today, with an associated surface trough moving across Nova Scotia through the day. Low-level convergence along this trough, as well as over parts of Newfoundland, will support isolated thunderstorm development.
Across Nova Scotia, the convective window will be relatively short-lived, ending by late afternoon as the trough exits. Slightly higher CAPE and shear in this region may support locally heavier rainfall rates and a risk of gusty winds in any storms that develop.
Over Newfoundland, thunderstorm activity may persist into the evening hours, with locally heavier downpours embedded within broader area of shower activity.
Over western Labrador, a weak thunderstorm cannot be ruled out, though no impacts are expected.
Looking ahead to Sunday into Monday, generally unsettled conditions will continue over New Brunswick and parts of Nova Scotia, with occasional weak thunderstorms possible.
Thunderstorm Outlook for Today
Thunderstorm Outlook for Tonight
Thunderstorm Outlook for Tomorrow
Mel Lemmon