Regional Impacts
Today: isolated thunderstorms over southern marine waters.
Tonight: Isolated thunderstorms possible over western NS and southern NB. Isolated thunderstorms once again for southern marine waters.
Sunday: Isolated thunderstorms for most of NL and some marine waters.
Convective Discussion
Some ongoing morning thunderstorms for southern waters today through to Sunday in association with a persistent trough of low pressure. Will likely continue to see the diurnal tendencies for these cells with CTC being favourable (overnight and morning). Some gusty winds are possible especially over the warmer waters.
An upper low will approach the MRTMS today bringing some showers, with a risk of a thunderstorm tonight as an area of PVA moves in promoting upper level divergence. The guidance will likely miss this potential in conventional indices. Heavy downpours would be the threat and given the slow movement, localized heavy amounts are also a possibility.
The trough that has been south of the region will move northward towards NL on Sunday with the risk for isolated thunderstorms giving heavy downpours.
Thunderstorm Outlook for Day 1
Thunderstorm Outlook for Day 1 night
Thunderstorm Outlook for Day 2
