By: Stephen McCoy
A surface low pressure system located, at the time of this forecast, over the Upper Peninsula of Michigan is expected to continue moving eastwards through the next few days, passing just to the north of southern Ontario. Overnight, a cold front from the system will bring a chance of showers to the region, though precipitation is likely to stop before track activities get underway on Friday. As the front passes through, surface winds will shift to the west to northwest, resulting in temperatures around average for this time of year. Some stronger gusts are possible through the day as low level winds will also be from the west to northwest. Low level moisture lifted by the front will result in mostly cloudy to overcast conditions to start the day, however as the front moves out of the region and drier air moves in, partly cloudy conditions will be present in the afternoon.
On Friday, a strong surface low pressure system will develop ahead of an upper level trough over the Great Plains in the US, tracking northeastward through the forecast period. A warm front extending from the low to the east to southeast will slowly approach southern Ontario from the south on Saturday, though it isn't expected to pass through the region until Sunday morning. Moist air being lifted by the front will bring a brief chance for showers ahead of the front around mid-day. Partly to mostly cloudy conditions are expected otherwise, concentrated mainly in the mid-to-upper levels. Light surface winds from the east to southeast will cause slightly cooler temperatures during the day.
As I mentioned before, the warm front is expected to move through the area Sunday morning. Southerly/southwesterly winds will bring warmer temperatures to the region during the day, resulting in the high being the warmest of the weekend. Conditions will be partly to mostly cloudy with a mix of low and high-level clouds. The surface low will continue to approach the region from the west during the day. After the track sessions have concluded for the day, there is a chance of thunderstorms ahead of a cold front from the system.
On Friday, a strong surface low pressure system will develop ahead of an upper level trough over the Great Plains in the US, tracking northeastward through the forecast period. A warm front extending from the low to the east to southeast will slowly approach southern Ontario from the south on Saturday, though it isn't expected to pass through the region until Sunday morning. Moist air being lifted by the front will bring a brief chance for showers ahead of the front around mid-day. Partly to mostly cloudy conditions are expected otherwise, concentrated mainly in the mid-to-upper levels. Light surface winds from the east to southeast will cause slightly cooler temperatures during the day.
As I mentioned before, the warm front is expected to move through the area Sunday morning. Southerly/southwesterly winds will bring warmer temperatures to the region during the day, resulting in the high being the warmest of the weekend. Conditions will be partly to mostly cloudy with a mix of low and high-level clouds. The surface low will continue to approach the region from the west during the day. After the track sessions have concluded for the day, there is a chance of thunderstorms ahead of a cold front from the system.
