000 NOUS63 KDDC 091656 FTMDDC Message Date: Feb 09 2012 16:56:14 KDDC HAS SWITCHED Z-R RELATIONSHIP FROM MARSHALL-PALMER (Z=200R^1.6) TO EAST COO L STRATIFORM (Z=130R^2.0) AT 1650Z TO BETTER SAMPLE FUTURE PRECIPITATION EVENTS MORE CORRECTLY.