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Ontario: Drastic temperature drop follows gusty winds, storms

Friday, March 20th 2020, 4:20 pm - The first thunderstorm risk of the season gives way to a drastic drop in temperatures into the weekend.

A low-pressure system passing through southern Ontario that briefly brought some early-season thunderstorm risk has left behind some strong winds that will slowly diminishing through the afternoon. From morning highs in the mid-teens or above, temperatures are tumbling down to near-zero temperatures by Saturday morning. What's ahead, below.


WEATHER HIGHLIGHTS:

  • Temperatures dropping from morning peaks in the teens to around zero by Saturday morning
  • Strong winds triggered wind warnings, diminishing slowly through the afternoon
  • Next system arrives at the end of the weekend, bring rain, snow or a rain/snow mix to much of the province
  • Keep on top of active weather ALERTS for your area

FRIDAY: POWERFUL WIND GUSTS LINGER

Gusty winds picked up earlier Friday in southern Ontario ahead of a passing cold front which produced a line of thunderstorms through the morning.

Now behind the cold front, those northwest winds will continue to be strong across southern Ontario throughout the afternoon and evening.

The potentially damaging winds will track through some areas quickly and Environment Canada warns that local power outages will likely occur in areas where the wind gusts reach or exceed 90 km/h.

"The strongest gusts will be across the Niagara Peninsula and areas atop the escarpment, such as Guelph and Kitchener-Waterloo," says Weather Network meteorologist Kevin MacKay.

THE SAME STORM SPAWNED SEVERE WEATHER, REPORTED TORNADOES, IN THE U.S.:

Temperatures in the GTA peaked this morning between 10:00 am and noon, which is when the northwest winds will began cooling down the region. Temperatures will then continue to fall until Saturday morning, resulting in a 20-25 degree temperature difference. Eastern Ontario will see a similar situation, but the warmth will linger into the early afternoon hours on Friday.

TEMPDROP

WEEKEND: UP TO 30-DEGREE TEMPERATURE DROP POSSIBLE, WITH LOTS OF SUN

The high pressure causing the late-week rapid cooldown will also provide a clear weekend across the Great Lakes although temperatures will remain around 5 degrees below seasonal

sat 2020-03-19 (2)

The next round of active weather will be on Sunday night when a low pressure system from the U.S. tracks into southern Ontario. The system will advance north spreading rain, mixing and snow across the region through Monday. Some snowfall accumulations are likely, especially away from the Great Lakes where temperatures remain below the freezing mark.

In northern Ontario, conditions will be fair and cold for the weekend and into Monday. Beyond, temperatures will be more changeable next week and potentially more active during the second half of the week.

Continue to check back as we continue to monitor the forecast.

A LOOK AT THE NEXT SYSTEM:

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