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Ontario: Severe thunderstorm risk beckons toward the weekend

Wednesday, May 22nd 2019, 9:30 pm - Thursday and Friday both feature some thunderstorm risk.

Wednesday's cooler, cloudier conditions were a harbinger for a couple of days of storm risk in southern Ontario, with a chance some storms may turn severe at least on Thursday, buoyed by some daytime heating. More on the biggest threats with these storms, plus a look at why any consistent warmth will struggle to lock in even for the first days of June, below.

Fire up the barbecue - the countdown to our official 2019 #SummerForecast is on! See our full report on TV and online June 27


WEATHER HIGHLIGHTS:

  • Heightened storm risk Thursday for parts of southern Ontario
  • Second round of storms possible late Friday into Saturday
  • Warm weekend, but cooler than seasonal temps return next week
  • Latest watches and warnings [HERE]

WATCH BELOW: ISOLATED SHOWERS AND THUNDERSTORMS RETURN, TIMING

SEVERE THUNDERSTORM THREAT CREEPS IN ON THURSDAY

Looking ahead, heightened thunderstorm risk beckons for Thursday, firing up before noon for the GTA, and across central and eastern Ontario by Thursday afternoon, though Weather Network meteorologist Kelly Sonnenburg says 'timing will be everything.'

"If the passage of the front slows down, there will be more of an opportunity to see widespread severe storms across the Greater Toronto Area and eastern Ontario with strong winds, heavy rain and small hail as the threats," Sonnenburg says.

Presently, the areas of highest risk range from the Niagara Region through to eastern Ontario, with the main hazards being hail, downpours, and strong wind gusts potentially reaching 90 km/h through the afternoon and early evening.

Be sure to check back for updates as we watch this risk closely.

ONRiskThursdayLATEST

ANOTHER THUNDERSTORM THREAT TO ROUND OUT THE WEEK

As much of Friday will feature sunny skies and near seasonal temperatures of 20°C, the thunderstorm threat once again lingers into the weekend.

By late Friday night and into Saturday, there's a threat for showers and thunderstorms and while Saturday will not be a washout, it appears that the threat for storms will continue for much of the day.

ONSaturday (2)

UNSETTLED WEATHER STYMIES STRING OF WARM DAYS INTO JUNE

While seasonal, or at least near-seasonal, temperatures are in the cards for these last two weeks of the month, bursts of unsettled weather will mar otherwise pleasant spring weather.

"It looks like next week will bring a return to a familiar pattern in which southern Ontario will be the battle zone between summer-like weather to our south and cooler weather to our north," Weather Network meteorologist Dr. Doug Gillham says. "This will bring an increasing threat for a couple periods of showers and thunderstorms and changeable temperatures."

By late next week and into the first week of June, cooler than seasonal temperatures will once again dominate the region, adds Gillham.

Stay with us here at The Weather Network for your latest forecast updates.

WATCH BELOW: LONG WEEKEND MEANT CLEANUP FOR MANY IN COTTAGE COUNTRY

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