It's just dawn in London, about five hours before my flight takes off, and this is the headline on the WGN Weather Blog:

Entire Chicago metropolitan area upgraded to winter storm warning

The entire Chicago metropolitan area is being placed under a winter storm warning effective from this evening through noon on Wednesday. Previous the winter storm warning had been in effect only for counties close to Lake Michigan where lake-enhanced snowfall was expected to boost snowfall total and surrounding areas were under a winter weather advisory. The warning area was expanded because strong winds are expected to develop gusting to 35-40 mph. The high winds will cause much blowing and drifting of the newly fallen snow creating very hazardous conditions that could result in near blizzard conditions in open areas.

Any bookmakers out there want to give me the odds of getting to Chicago tonight? I'm guessing I'll wind up in Raleigh, actually.

I've stopped briefly in London to take two days with no responsibility whatsoever. Along the way I got a brief glimpse of Kyiv, but tantalizingly the cloud cover started right over the city. (For the half-hour we flew over Eastern Ukraine the weather was perfectly clear.)