Words "spot" and "over"
Hello Everyone, how are you?
can you clarify the meaning of the words "spot" and "over" in this point below?

"He spoke to VOA about the current storm."
Weather systems had kept the storm over one area much longer than most hurricanes, resulting in huge amounts of rain."_

Is there any rule when I should use "over" or "about"?
"Spot", it's synonymous "place"?

Question

Words "spot" and "over"
Hello Everyone, how are you?
can you clarify the meaning of the words "spot" and "over" in this point below?

"He spoke to VOA about the current storm."
Weather systems had kept the storm over one area much longer than most hurricanes, resulting in huge amounts of rain."_
 
Is there any rule when I should use "over" or "about"?
"Spot", it's synonymous "place"?

Answer

There is no 'spot' in your sentence! It is similar to 'place', but used in less contexts. It is typically used in 'a nice spot' or 'in one spot', meaning not moving.
'Over' always has an 'above' aspect. Weather is (almost) always above the ground, so you can refer to the weather being over a place. It is not very natural to use 'about' as a direct replacement for 'over' in that sentence. About is usually used to mean 'approximately' or to indicate 'moving around', which doesn't quite fit.