posted on Oct, 25 2012 @ 08:49 AM
Well, you said it is overcast right now but that doesn't mean there is moisture in the air. Without the right conditions convection will not occur
with clouds. Convection can be easily explained as a heat bubble that breaks off from the surface, cools as it travels up and sometimes forms the
cumulus clouds that become weather. A very dry area will just rise dry warm area and then travel back to earth to do the same thing. See pic below.
The radar in the OP is not picking up and moisture in the area. So, the clouds you are seeing could be dirt, dust, etc..
The reason why there is no moisture in the area could be the fact that there is a land breeze flowing outward into the sea and not flowing back
because of the heat on land. I don't know if there is any valleys or mountains in the area but that can affect the way convection works with the sea
breeze and the circulation in the valleys/mountains. Example below.
Just not the right conditions for moisture and that could be many many things but the main reason is convection.
Might want to check the winds in your area. I see a few pointing southeast and east. Which means you have a land breeze going outward causing what
happens in the very bottom pic.
Could be also experiencing the water cycle
Sometimes there will be cumulus clouds that form over the water. Sometimes not.
edit on 25-10-2012 by johngrissom because: (no reason