For a clear example of this , folks just need to look at the 6z and 12z runs of the HRRR (both have extended hours )
Go to reflectivity and loop for the day Sunday
6z run was a massive WAA push that wasn’t shredded and was longer lasting and expansive even to the North , The result was CT and RI were buried on Thump and really everyone did well
12z run was a weaker disjointed WAA push and it didn’t really amount to anything other than 1-2” in hills of CT and nada really north of Union
In between those extremes would be the 6z euro solid several hour thump but not as expansive and confined to CT and Later into Eve RI