Regional Impacts:
Today
NB/NS/PEI: None
NL/Labrador: Isolated lightning and locally heavy downpours
Tonight
NS/NB/PEI/Labrador: None
NL: Isolated lightning and locally heavy downpours
Thursday
NB/NS/PEI/Labrador: None
NB/NS/PEI: Isolated lightning
Convective Discussion:
A slow moving trough of low pressure extending from a low over northern Quebec will advance eastward across Newfoundland and Labrador today and tonight. Ahead of the trough embedded lightning and downpours are occurring. Precipitable water values are in the mid 40s and rainfall warnings are in effect for the southern Newfoundland coast. Over western Labrador there is a risk of surface based lightning in the wake of the trough this afternoon. The CAPE and shear values are quite low so only small hail or wind gusts are likely there.
As the trough continues eastward on Friday there is a risk of thundershowers for eastern Newfoundland and associated waters.
Thunderstorm outlook for today:
Thunderstorm outlook for tonight:
Thunderstorm outlook for Friday:
