Weak rotational couplets are now being observed on the storms in MKE’s area in SW Wisconsin.  Interstngly, they are better observed from KDVN radar, but in a typical WFO setup, Milwaukee couldn’t look at KDVN level II data, unless they used an alternate source (like GR2AE).  But in the HWT, our MKE forecaster can just walk over to the DVN forecaster and look at their level II data.  Here is the storm relative velocity data in question:

Fig 1.  KDVN Velocity data.

Fig 2.  KMKX velocity data.

Greg Stumpf, EWP2011 Week4 Coordinator