New Warning for…Cayuga County!

Posted in Live Blogs on by Kristin Calhoun.

The storm shown below has undergone rapid strengthening lately.  This time, I used the 30 minute MESH, composited with the MRMS -20C reflectivity to generate the warning polygon.  The 30 minute product was useful for quickly determining a reasonable extent to my corresponding 30 minute warning.  It also showed indeed that the storm was undergoing strengthening.  In addition, at 2216 UTC, the >1 inch hail threshold was breached by the MESH data (actually looking back it was breached at 2214 UTC).

Image 1.
Image 1.  MRMS MESH 30 minute accumulation at 2216 UTC with resulting warning polygon.

At the same time, the -20C Isothermal reflectivity was showing values around 60 dBZ (image 2 below).

Image 2. MRMS reflectivity of -20C isothermal level, with warning polygon.
Image 2. MRMS reflectivity of -20C isothermal level, with warning polygon.

Kris and Eric

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