earth - What light source can cause a shadow of a cloud onto the next cloud above?

Scenario-
-Time & Environment-11:00pm Super Moon small town population 40,000 in Central Ca.
-Nearest body of water is 80 miles away 4 small lakes of about 1 mile in diameter.
-Pacific Ocean is 250 miles away
-Surroundings-Miles of orchards and fields for agriculture.Nearest town population of 200,000 about 10 miles.
Nearest city with population of 400,000 about 60 miles away.

-Objects in order from earth to moon-
(1) thin linear cloud across visible sky.
(2) Dark shadow from chem/con cloud.
(3) overcast cloud that filled large portion of sky with a transparency of about 20 percent based on moons visibility seen through cloud layer.
(4) Super Moon at a 12 o'clock position in sky.