Day 1 Convective Outlook for Atlantic Canada Valid for August 22nd, 2018

 

Technical Discussion

Low risk of non severe elevated thundershowers this afternoon and tonight over parts of NB and NS.  These thundershowers are associated with a trough that will move over the area.  If any thundershowers develop, they will be scattered.  The highest likelihood of thundershowers is over southwest NS.

 

Regional Impacts

 

Nova Scotia – Showers with embedded heavier amounts up to 10 mm in thundershowers.  Most likely over southwestern NS.

 

NB – Showers with embedded heavier amounts up to 10mm in thundershowers.

 

PEI – none.

 

Nfld & Lab – none.

 

 

Barrie MacKinnon

 

 

 

Day 1 Convective Outlook for Atlantic Canada Valid for August 22nd, 2018

 

 

Technical Discussion

Low risk of non severe elevated thundershowers this afternoon and tonight over parts of NB and NS.  These thundershowers are associated with a trough that will move over the area.  If any thundershowers develop, they will be scattered.  The highest likelihood of thundershowers is over southwest NS.

 

Regional Impacts

 

Nova Scotia – Showers with embedded heavier amounts up to 10 mm in thundershowers.  Most likely over southwestern NS.

 

NB – Showers with embeddd heavier amounts up to 10mm in thundershowers.

 

PEI – none.

 

Nfld & Lab – none.

 

 

Barrie MacKinnon

 

 

Day 1 Convective Outlook for Atlantic Canada Valid for August 21st, 2018

Technical Discussion

High pressure continues to dominate most of Atlantic Canada today leading to widespread subsidence which will suppress convective activity.  Slight risk of non severe thundershowers over southwestern Labrador this afternoon and early evening due to the presence of a weak trough over the area.

 

Regional Impacts

 

None

 

 

Barrie MacKinnon

 

Day 1 Convective Outlook for Atlantic Canada Valid for August 20th, 2018

Technical Discussion

 

A large area of high pressure dominates Atlantic Canada bringing with it wide scale subsidence and very dry upper levels.  There is no convective activity expected over the region today or tonight except possibly over southern Maritime marine waters as an area of low pressure tracks over that area.  These thundershowers are not expected to be severe.

 

Regional Impacts

 

None

 

 

Barrie MacKinnon

 

Day 1 Convective Outlook for Atlantic Canada Valid for August 19, 2018

Convective Discussion

 

No thunderstorms expected over the Atlantic provinces.  

 

 

 

Jean-Marc Couturier