Regarding the warning for:

EXTREME NORTHERN CAYUGA COUNTY IN CENTRAL NEW YORK…
SOUTHWESTERN OSWEGO COUNTY IN CENTRAL NEW YORK…
EXTREME NORTHEASTERN WAYNE COUNTY IN WESTERN NEW YORK…

We (The Buffalo office guys) noticed an increase in both the MESH and an increasing 50 dbz core on the KZYX Z slice at 4.0 degrees elevation and above 25 KFT. The Hybrid HSDA did show a slight increase, but no LH or GH just yet (the sever type). Nonetheless, the CC Dual Pol product indicated low values indicative of larger hail as well. Here’s the 2214Z 4-panel of all these parameters.

Here’s what these parameters looked like from KBUF upstream near Oswego, NY.  Everything mentioned above on the parameters was similar to KTYX.

The theme here is using only MRMS and Dual Pol is helpful, but even using base legacy radar data is more helpful when looking from two different RDAs.