Regional Impacts
Today
NS/NB/PEI/NFLD/LAB: None.
Tonight
NS/NB/PEI/NFLD/LAB: None.
Saturday
NB: Slight risk of a late afternoon thundershower in NWern regions with brief heavy downpours.
NS/PEI/NFLD/LAB : None
Convective Discussion
Atlantic Canada remains fairly quiet today with a ridge of high pressure across the Martimes with a cold front exiting eastern Newfoundland this morning and a semi quasi-stationary low pressure system siting south of the Maritimes marine district. A weak trough across central and southern Quebec into central Maine along with increasing surface temperatures and cooler air aloft aid in the triggering of isolated thundershowers this afternoon and evening but are not expected to persist into New Brunswick.
For Saturday, the trough will move eastward and provide some scattered showers across New Brunswick in the morning. An approaching low pressure system moves into southern Quebec by Saturday afternoon, ahead of this system within the warm sector, scattered showers with risk of non-severe isolated thundershowers are possible mainly for northwestern New Brunswick where convective temperatures are mostly like to be reached and there is sufficient lift and effective shear to maintain convection. Weak troughing is also expected across northern Quebec into central and southeastern Labrador, giving isolated showers.
The low pressure system will track across northern New Brunswick and into the Gulf of St. Lawrence Saturday night and into Sunday with possible embedded convection.
Thunderstorm Outlook for Today
Thunderstorm Outlook for Tonight
Thunderstorm Outlook for Tomorrow
Forecaster: McArthur