Snow squalls are expected to develop.
Under the snow squall bands, visibilities will be significantly reduced due to the heavy snow combined with blowing snow, and snow will quickly accumulate.
Snow squalls expected early Wednesday into Thursday.
Snow squalls are expected to develop off Lake Huron Tuesday night and then continue into early Thursday with the arrival of a cold arctic airmass.
While visibilities will be significantly reduced at times, heavy accumulations of snow are not expected as shifting winds will prevent the snow squalls from lingering over any one location for an extended period of time.
The exception to this will be in areas near and north of London where the snow squalls are likely to remain near stationary for much of Wednesday night.
Total snowfall accumulations of 5 to 15 cm will be possible by the time the squalls come to an end during the day Thursday.
Travel may be hazardous due to sudden changes in the weather. Surfaces such as highways, roads, walkways and parking lots may become difficult to navigate due to accumulating snow.
Snow squall watches are issued when conditions are favourable for the formation of bands of snow that could produce intense accumulating snow or near zero visibilities.
