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Tuesday, July 6, 2021

Convective Outlook Valid for Today and Tomorrow

Regional Impacts

 

For Labrador…

Isolated Thunderstorms producing locally 20mm of rain and potentially gusting winds to 60 km/hr.

 

For New Brunswick…

Scattered thunderstorms potentially in the late afternoon or evening. Possibly winds gusting to 70km/hr and locally 25mm for northwestern areas.

 

For PEI…

Isolated Thunderstorms possible this evening.

 

Convective Discussion

Thunderstorm development today will depend on the weakening upper ridge and the timing of the approaching cold front. There is the expectation that low level moisture will continue to build today leading to an increase in thunderstorm potential with some organised storms possibly developing. Most of the initiation will be in Quebec with storms eventually moving into the Atlantic region late this afternoon. The overall threat of severe weather is low but that outlook may change if a linear feature forms along the cold front and moves over the area.

 

Thunderstorm Outlook for Day 1

 

 

Thunderstorm Outlook for Day 2

 

Monday, July 5, 2021

Convective Outlook Valid for Today and Tomorrow

Regional Impacts…

No thunderstorms are expected today.

 

For tomorrow…

New Brunswick… Thunderstorms are expected late tomorrow for western parts of the province with locally heavy downpours of 25mm and wind gusts to 60km/hr.

 

Convective Discussion…

 

For the most part convection will be fairly settled today as an upper ridge builds across the region. Shallow convection is possible but strong updrafts are not expected to develop into thunderstorms.

Tomorrow  as the upper ridge gradually breaks down and low level moisture begins to increase the likelihood of deep convection will increase. Overall Cape values will not be high at ~ 500j/kg, precipitable water values will be above 40mm and low lever shear values will likely be around 30 knots. This could lead to some organised convection with locally heavy downpours possibly exceeding 25mm and strong wind gusts.

 

Thunderstorm Outlook for Day 1 *No Thunderstorms Expected

 

 

Thunderstorm Outlook for Day 2

 

Sunday, July 4, 2021

Convective Outlook Valid for Today

Thunderstorm Outlook for Today

 

Regional Impacts

Slight chance of thundershowers over portions of Nova Scotia, Prince Edward Island and Newfoundland.

 

Convective Discussion

A chance of embedded convection along the track of an approaching upper low.

Saturday, July 3, 2021

Convective Outlook Valid for Today

Thunderstorm Outlook for Today

Regional Impacts
No inland thunderstorms expected.

Convective Discussion
Isolated convection along the frontal boundary and in the vicinity of the associated upper low approaching Nova Scotia.


Friday, July 2, 2021

Convective Outlook Valid for Today and Tomorrow


Thunderstorm Outlook for Today

Regional Impacts
No inland thunderstorms expected at this time.

Convective Discussion
Isolated convection along the frontal boundary over southern waters.



Thunderstorm Outlook for Tomorrow

No thunderstorms expected over land at this time.