But 84 hour NAM, is wasaay better! ???Truth is they all suck beyond 7 days. Ensembles can also be misleading. Mean can be skewed by a few very cold or very snowy members. If 35 of the 51 members of the EPS are warmer than normal and 16 are way below normal skewing the mean to below average its probably going to be warmer than normal. We see it constantly with snow when a handful of members skew the mean but the majority say it's not going to snow. And usually it doesn't snow.