Dense fog is present over much of Iowa this Tuesday morning. The featured chart looks at the frequency of reported fog based on hourly observations from the Ames Airport. This analysis would place late May as one of the least frequent times of year for fog for the site. The side and bottom panels show the hourly and weekly histograms. Of course, fog is most common during the early morning and pre-dawn hours as the atmosphere cools and the air becomes saturated.

Voting:
Good = 11
Bad = 0

Tags:   fog