Both teams have been issuing warnings for hail in far northwest Nebraska.  These storms appeared to be in the best environment, taking advantage of moderate mid level flow seen on the Medicine Bow profiler, and somewhat backed northeasterly surface flow just north of the slow moving cold front.  Forecasters have been using the Max Estimated Hail Size (MESH) product, which reached near 1.75 inch.  They have also been very interested in reflectivity at the 0 and -20 degree C level.  They have looked at echo tops products, but mostly for completeness.  The echo tops have not influenced warning decisions.

Patrick Burke (EWP Weekly Coordinator, 18-22 May 2009)