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Saturday, June 20, 2020

Convective Outlook Valid for Today and Tomorrow

Thunderstorm Outlook for Day 1

 

Regional Impacts

 

Nova Scotia and New Brunswick: A risk of thundershowers this afternoon and early evening.

Newfoundland and Labrador and Prince Edward Island: None

 

Convective Discussion

 

Cape values of 500-1000 J/kg and shear of less than 20 kts will yield the potential for pulse storms along a weak trough over western NB and NS this afternoon and evening. If the convection does occur then the slow moving cells could give local downpours of 25 mm or higher.  The precipital water indicates 25-30 mm. Dry mid-levels will give the potential for some gusty winds if the convection does occur.  

 

Thunderstorm Outlook for Day 2

 

Pulse storms possible for northwestern NB on Sunday giving similar impacts as this afternoon.