Weather at MDW was 600-2 and forecast to stay that way for the rest of the day. Champaign weather was almost the same and the enroute forecast looked like it was going to be a routine flight. Winds aloft were not favorable, but icing was not in the forecast or noted in any pilot reports. After takeoff everything looked fine except for a circuitous departure to the airway and the groundspeed indicated stronger than forecast winds aloft. The MDW weather was still 600-2 so I decided that to stay with the original destination.
Alternates are fine, as long as the option of going there remains open.
As I learned on this flight, at some time the alternate option goes away. The ILS to runway 6 was working out just fine. The radar controller had nailed the intercept for me and 69N was now inside the marker, gear down and neatly tracking the glideslope. At about 1000 feet AGL, but still in the overcast, the tower advised that the King Air in front of me had taxied into a snowbank and would I please climb to 2300 feet on the published missed approach. By the way, call departure on 123.8.