Regional Impacts
Southeastern Labrador could experience strong thunderstorms this afternoon - the main threat is damaging wind gust, brief downpours and small hail – into the evening.
Convective Discussion
This morning, a frontal wave was located south of Newfoundland. The elongated front has an history of producing locally heavy rain as far back as NB (reports of rainfall rates of 20-40 mm). Earlier lightning activity has faded during the past two hours. This feature will continue to move eastward – out of the region - throughout the afternoon.
The main are of focus for the afternoon is Labrador where an upper cold low prevails. The cold pool would be sufficient to trigger isolated thunderstorms, but this likelihood will be enhanced by an approaching vorticity rotating around the low. The moisture available in this airmass is not tremendous, but the energy available is high enough to anticipated the development of fairly robust eastward moving storms capable of producing small hail, damaging wind gusts and localised downpours.
Thunderstorm Outlook for Day 1
Thunderstorm Outlook for Day 2
