Regional Impacts
Today
NS/NB/PEI/LAB: Scattered thunderstorms.
NFLD: A chance of embedded thundershowers.
Tonight
NFLD: A chance of embedded thundershowers.
NS/NB/PEI/LAB: None.
Wednesday
NS/PEI: Scattered thundershowers.
NFLD/LAB: A chance of thundershowers.
NB: None.
Convective Discussion
The tropical moisture feed ahead of a broad upper low approaching New Brunswick will continue over most of Atlantic Canada today. Over Newfoundland there is a chance of embedded convection and synoptic warnings and statements are already in effect there. Clearing skies elsewhere will allow surface based convection. The area of most concern today is over portions of Nova Scotia, New Brunswick and PEI where CAPE values of 1000-1500 J/kg and effective shear near 30 knots are expected. An upper level jet may also contribute with the development but that is east of the main area of concern. While wind gusts and hail are possible, once again it will be training thunderstorms giving copious amounts of rain that is the main concern. On Wednesday, the upper low and afternoon destabilization will move over the eastern Maritimes and into southwestern Newfoundland. Conditions similar to today are expected but the shear will be a bit less so more muted impacts are likely.
Thunderstorm Outlook for Today
Thunderstorm Outlook for Tonight
Thunderstorm Outlook for Tomorrow
