When looking at Relative Velocity on a doppler radar image, which indicates storm rotation...?

Question

Green in the red field or red in the green field? I'm looking at this image http://i217.photobucket.com/albums/cc28/I_Help_Make_Magic/stormalbany26jul.jpg and trying to figure out if there's rotation in the storm or not.

Answer 1

Storm rotation is depicted when you see in bounds and outbounds next to each other in a certain order.It does not matter what field what color is in just that they are opposite each other in a storm.

The are to the north east of Cobleskill is an area of rotation while the smaller single green dots bay be rotation but are most likely nothing while the purple area is called range folding.

Inbound=I Outbound=O RADAR=R RADAR Beam=------

IO ----R is an example of Convergence or OI------R Divergence

I_ _ _ _ _R

O

is Rotation, the order can change but it's the same concept.

There is also Rotational Divergence/Convergence depending on the angle they are oriented, the inbound/outbounds and orientation of the RADAR.

Answer 2

For base and storm relative velocity radar imagery, red indicates something is moving towards the radar location and green indicates something is moving away from the radar location. The green in the upper left corner is the most probable location of rotation.