Convective Discussion
Satellite images are showing multiple bands of convective clouds ahead of an advancing upper low located just west of Labrador. The instability is limited to the low and mid levels for the time being. A cyclonic southwesterly upper level jet over western Newfoundland is supporting isolated TCU/CB’s east of Stephenville, and with the advancing cold air aloft the mid-level lapse rates are expected to favorable for continued development of isolated cells over central and eastern NF. The moisture available in this airmass is limited so rainfall amounts should remain low.
Regional Impacts
Newfoundland and Labrador…
Isolated non-severe thunderstorms are expected this afternoon over much of Newfoundland and Southeastern Labrador
The main threat ahead of these isolated clusters would be gusts of around 70 km/h.
Maritimes…
No thunderstorms expected
Jean-Marc Couturier
Forecaster / Meteorological Service of Canada
Environment and Climate Change Canada / Government of Canada
Prévisionniste / Service météorologique du Canada
Environnement et Changement climatique Canada / Gouvernement du Canada