Reports are that a Cessna Citation is missing over (in) Lake Erie, southern Ontario.
Coast Guard searching for 6 people after plane goes missing over Lake Erie - Windsor - CBC News
This lake is known for its wicked winter weather, worsened by what are known as snow streamers, long snow producing clouds which form downwind of open water, and create lots of snow at lower altitudes.
It's been closer to freezing than normal lately, so what would normally be sub zero snow, has more been at zero freezing drizzle and rain - not so welcoming for flying. I observe that global warming is a reality, and it makes southern Ontario winters much less nice.