Ottawa – Conditions are favourable for a brief but intense snow squall as a cold front passes through Eastern Ontario late this afternoon or early evening.
Within the snow squall, visibility may be suddenly reduced in a burst of heavy snow and blowing snow. However, accumulations are expected to be limited to a few centimetres at most as the snow squall will pass through quickly.
Travel may be hazardous due to sudden changes in the weather.
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.