Thunderstorm Outlook for Today
Regional Impacts
Isolated non-severe thunderstorms are expected today with heavy downpours being the biggest threat for northern New Brunswick. There is also a slight risk of elevated thunderstorms this evening and overnight along the Fundy shores, Nova Scotia and parts of PEI.
Convective Discussion
A sweeping long wave trough will enter New Brunswick this afternoon bringing with it the ability to trigger thunderstorms. SFC based CAPE values of 500-1000J/Kg may be difficult to be fully realized with all the synoptic cloud currently present. However, there is 35kTs of 0-6k Shear today, so a storm that may develop will likely drop 25-40mm of rain in a few locations. With easterly progression, thundershowers may persist into mainland NS overnight tonight.
Thunderstorm Outlook for Wednesday
Regional Impacts
Isolated non-severe thunderstorms are forecast for parts of New Brunswick.
Convective Discussion
Much less SFC based CAPE available (200-300J/kg), as well as much more shear as low centre approaches from west – short lived single cells possible.
