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Thursday, May 31, 2018

Day 2 Convective Outlook for Atlantic Canada Valid for June 1, 2018

 

Convective Discussion

 

A warm and humid air mass will approach New Brunswick on Friday ahead of a low pressure system moving eastward over Quebec. The atmosphere will be conducive for the development of thunderstorms in the afternoon given increasing moisture in the low levels, moderate low level wind shear and high maximum temperatures. These ingredients along with an approaching cold front will help de-stabilize the air mass and initiate afternoon showers and potential thundershowers over northwestern New Brunswick beginning in the afternoon and spread southeastward into the evening.

 

Regional Impacts

 

The main threat with the potential thundershowers will be local heavy downpours and some moderate gusts.

 

 

Roberta McArthur

 

 

Day 1 Convective Outlook for Atlantic Canada Valid for May 31, 2018

 

Convective Discussion

 

No convection expected in the Maritimes and Newfoundland today mainly due to a warm but dry airmass providing wide scale subsidence under a ridge of high pressure. Meanwhile, a warm front is beginning to slide further east into Labrador giving rain overnight to western Labrador. Convection may be enhanced overnight due to nocturnal cooling but at this time thunderstorms are not expected.

Regional Impacts

 

None

 

 

Roberta McArthur