Cirrus Moon

A waning crescent moon shines

brightly through a thin veil of

cirrus fibratus clouds just after

7:00 AM on Thursday,

September 22, 2011. Though

not visible here, the sun had

peeked above the horizon about

ten minutes earlier. This image

looks east from Brentwood Drive

NE in Cedar Rapids, Iowa. Cirrus

fibratus clouds are often seen

ahead of advancing weather systems

and can indicate a change toward

a more active weather situation.