Convective Discussion
Conditions are generally unfavourable for convection over Atlanta Canada today. However, there is lots of instability and dynamics over the St. Lawrence River this morning that will slowly advect eastward. Over this region, there is a moist tongue of dew points in excess of 16 deg and warm temperatures of 20 deg or higher. There is an east-west 250 jet over southern Ontario and a north-south 250 jet extending from western Maine into eastern Quebec. There is also a digging 500 mb trough with diffluence ahead of it. There is a possibility that some cells with high precipitable water could creep into extreme northwestern New Brunswick later today giving heavy downpours.
Regional Impacts
Maritimes…
Western New Brunswick.
Slight risk western Labrador.
Stephen Hatt
Forecaster
ASPC