Cirrus Heralds the Storm

Photo by Craig Johnson 12-27-2019, Cirrus Heralding the Storm

In the previous post we looked at the first sign of an approaching storm; a drop in air pressure. This time it’s the first sign in the sky. Cirrus clouds spreading northeast over Iowa have reached Cedar Falls. Next we will look for another sign; a switch in the wind from westerly to southeasterly.

The map below shows the weather at 6:00 p.m.