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Monday, August 22, 2022

Convective Outlook Valid for Today and Tomorrow

Regional Impacts:

 

Today

Labrador: Isolated to scattered thunderstorms giving lightning, locally heavy downpours and gusty winds

Northwestern NB: Isolated thunderstorms

NS/PEI/NL: None

 

Tonight

NS/NB: Elevated/embedded thunderstorms

NL/PEI/Labrador: None

 

Tuesday

NS/PEI/NB: Elevated/embedded thunderstorms

NL/Labrador: None

 

Convective Discussion:

 

A trough over eastern Quebec/southern Labrador will drift southward while weakening. Ahead of the trough over southern Labrador scattered thunderstorms will develop this afternoon. Precipitable water near 25 mm and CAPE values 500-1000 J/kg are expected. Strong shear of 30-40 kts and dry mid-levels may support squall lines. Over northwestern NB, a weak shear environment and marginal cape may support pulse type storms with locally heavy downpours and brief wind gusts possible later this afternoon. Tonight and Tuesday a risk of elevated thunderstorms exists as a weak low pressure approaches.

 

 

Thunderstorm outlook for today:

 

Thunderstorm outlook for tonight:

 

Thunderstorm outlook for Tuesday: