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Tenacious low brings lingering rain, storm chance in Eastern Canada

Friday, July 23rd 2021, 10:12 am - Parts of Quebec and Atlantic Canada may see some thunderstorms fire up Friday as the persistent upper low hangs over Eastern Canada.

The end of the week in Eastern Canada will be marked by another threat of showers and thunderstorms Friday, though anticipated to stay below severe criteria, encompassing much of the Maritimes and parts of southern and eastern Quebec. The main threats will be heavy downpours and gusty winds. Spotty showers may linger into Saturday for parts of the Maritimes, but most of the weekend will see improving conditions. Meanwhile, Quebec may see another round of rain and thunderstorms Sunday morning from a cold front moving east. As well, temperatures will remain around or slightly cooler than seasonal into the weekend. More on the rain potential in the next few days and beyond, below.

FRIDAY: STORM RISK HANGS OVER EASTERN CANADA

The upper low will remain hovered over the East, continuing to bring instability to the region. This will lead to wraparound showers and a thunderstorm threat across parts of southern and eastern Quebec, and the Maritimes Friday afternoon.

QCATLRiskFri

However, any storms that do spark up will be non-severe in nature and mainly marked by heavy local downpours and strong wind gusts.

Cooler than seasonal temperatures will persist in Eastern Canada Friday, and into the weekend, as a northwesterly wind will prevent any kind of warmth from creeping in.

THE WEEKEND: IMPROVING CONDITIONS IN MARITIMES, STORM RISK CREEPS INTO QUEBEC

This weekend won't be a writeoff across a good chunk of Eastern Canada.

The Maritimes will be dealing with spotty showers on Saturday afternoon before high pressure moves in and makes for a beautiful Sunday for most of the region. There may be some spotty showers in northern New Brunswick, but most of the Maritimes will be rain-free.

ATLTempSun (July 23)

The cold front sweeping through Ontario on the weekend should reach southern Quebec by Sunday morning, expected to bring a round of rain and potential thunderstorms as it heads east.

NEXT WEEK: SEASONAL WITH A FEW OPPORTUNITIES FOR RAIN

A front progressing across the country will reach Eastern Canada by early next week will likely bring an opportunity for some rainfall as it moves through. The region will see a few more opportunities for showers and occasional rumbles of thunder through mid- and late week, but right now it doesn’t look like anything significant.

Next week’s temperatures will come in around or slightly above seasonal for much of Eastern Canada. Some good news is that the active pattern will stave off any sustained heat through the beginning of August.

Check back for the latest updates on conditions throughout Eastern Canada.

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