This could be the most common type of aerosol delivery that I've observed in 2008 and 2009.  It's very stealthy.  Before you even notice chemtrails, the sky is becoming overcast with aerosol clouds or is completely covered by a white-out.

1:35 PM

1:49 PM

1:51 PM

2:28 PM  White-out

6:24 PM

6:30 PM  White-out

12:08 PM

12:09 PM