Thunderstorm Outlook for Day 1 – Wednesday Aug 4
Regional Impacts
Isolated non-severe thunderstorms over central NB this afternoon and evening.
Convective Discussion
Generally not a great set up for thunderstorms across the Region. Over NB, there is descent shear, about 35-40 knots, but the sounding is weakly capped above 700 mb. If lift goes above the cap, the upper level buoyancy is very weak. Most of the CAPE would be below 700 mb. Elsewhere, throughout Atlantic Canada, the soundings are very stable and dry. No thundershower activity is expected.
Thunderstorm Outlook for Day 2 – Thursday Aug 5
Regional Impacts
Nova Scotia: slight risk of non severe thunderstorms in western Nova Scotia.
Convective Discussion
A warm front will move into the southern Maritimes on Thursday morning and will continue moving northeastward. Instability associated with the front and saturation with low level dew points of 15 to 20 deg could give convective initiation
from around 850 mb. A warm, moist airmass behind the front Thursday afternoon and evening could continue to give isolated thundershowers. The area currently shown for convection may be expanded north and east with the next convective outlook.
