Pea Soup For Thanksgiving?

Thick fog formed during the night of Monday/Tuesday November 19/20, 2012 and never completely dissipated during midday on Tuesday, November 20. As darkness fell the fog re-intensified, dropping visibility to .25-mile or less. These three images were taken from near the corner of Boyson Road and Brentwood Drive NE in Cedar Rapids, Iowa on Tuesday evening. The top photo looks west at approaching traffic on Boyson Road at 7:08 PM. It is a 1/10-second exposure at f/10, 1600 ISO and 18mm focal length. The middle photo looks south down Brentwood Drive at 7:15 PM. It is a 3.5-second exposure at f/22, 1600 ISO and 18mm focal length. The bottom photo looks east down Boyson Road toward Marion, Iowa at 7:11 PM. The red streaks of light are the taillights of passing cars. The image is a 16-second exposure at f/22, 1600 ISO and 18mm focal length. The red orbs of light are street lamps. Weather conditions at this moment was: 42 degrees F, 100% humidity and a dew point of 41 degrees. Fog was definitely thick as pea soup!