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Atlantic: Moisture-boosted low to bring copious rainfall amounts this weekend

Friday, June 5th 2020, 6:00 pm - After a pleasant end to the week, warmth will give way to a cooler and more unsettled weekend, with heavy showers for some.

After a pleasant Friday marred by the odd thunderstorm here and there, widespread unsettled weather will move into Atlantic region Saturday, with heavy rain and a thunderstorm threat for some. Parts of Newfoundland are looking at up to 50 mm of rain through Monday, which may cause localized flooding. Details and timing, below.

Visit our Complete Guide to Summer 2020 for an in-depth look at the Summer Forecast, tips to plan for it and much more


WEATHER HIGHLIGHTS:

  • Cooler and unsettled weekend, with at-times heavy showers for most of the region
  • Up to 50 mm of rain possible for parts of Newfoundland through Monday
  • Keep on top of weather ALERTS in your area

WEEKEND: WIDESPREAD RAINS IN NEWFOUNDLAND, MARITIMES

The low will begin pushing showers into the Maritimes in the pre-dawn hours Saturday morning, becoming widespread Saturday afternoon. It will taper off by Sunday morning. Rain will push into Newfoundland in the overnight hours, persisting through early Monday morning.

Heavier amounts are expected for central and southern Newfoundland, including the Avalon, through Monday as the system is fed by some subtropical moisture. Southern Newfoundland may see up to 60 mm of rain, while central areas could receive 30-50 mm. There may be localized flooding.

In the Maritimes, New Brunswick is in line to get 20-30 mm of rainfall and Nova Scotia will vary between 15-25 mm during the same time period.

ATL Rain

As with Friday, parts of the Maritimes will see a threat for non-severe thunderstorms Saturday, though more widespread, with most of New Brunswick and parts of northern Nova Scotia being at risk to see some develop.

ATL Risk

Temperatures will be much cooler on the weekend, as daytime highs will drop to the mid- to upper-teens or low 20s Saturday across the region.

BEYOND: COOL BUT QUIET START TO THE NEW WEEK

The last showers exit Newfoundland on Monday, heralding a cooler first half to next week.

Weather Network meteorologist Dr. Doug Gillham says temperatures will warm up during the second half, however, accompanied by relatively quiet conditions across the Maritimes.

Stay tuned to The Weather Network as we continue to monitor the forecast.

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