Interesting how the featureless sky above is not featureless in thermal infrared. The coldest ground temperature is 5 degrees F. The sky is 8 degrees, except in patches that are 3 degrees colder. I believe these are cloud regions that are hanging lower that our overcast.
|The sky looks featureless in visible light.|
|The overhead stratus clouds are 3 degrees warmer than the ground.|
|Except in patches that are as cold as the ground.|