Regional Impacts
NB: Scattered thunderstorms tonight and Wednesday, with locally heavy downpours possible, 15-30 mm.
NS: Scattered thunderstorms tonight and Wednesday, with locally heavy downpours possible, 15-30 mm.
PEI: Scattered thunderstorms on Wednesday afternoon, with locally heavy downpours possible, 15-30 mm.
NL: Isolated thundershowers possible over central Labrador on Wednesday afternoon.
Convective Discussion…
As a ridge of high pressure continues to dominate Atlantic Canada today, an approaching trough from the west will provide ample instability and wind shear for some elevated convection overnight tonight over the southwestern Maritimes. This trough will continue to push east on Wednesday, spreading the risk for elevated convection across most of the Maritime provinces. A thermal ridge at 850 mb will prevent any convection from becoming surface based, as such the main risk for these storms will be locally heavy rainfall, with 15-30 mm possible.
For Labrador, some isolated thundershowers are possible on Wednesday afternoon as a shortwave currently over Hudson’s Bay slowly approaches from the west. Locally heavy rainfall near 15 mm is possible with these thundershowers.
Thunderstorm Outlook for Today
Thunderstorm Outlook for Tonight
Thunderstorm Outlook for Wednesday
Copp