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I have cautioned (non-trained forecasters) for years to ignore #SpaghettiPlots. #SharpieGate is an example of why. To the untrained eye, all forecast models are equal and have the same "weight". This however is not true and a spaghetti plot often contains data up to 12 hours old.
Some models included in a spaghetti plot (SP) are run twice / day, at 12z and 0z. When a model is run at 0z, and included on a 12z SP, the SP began its run at 11z, which contained the last avail run of the model (0z). By the time SP shows up on a server, it has 12 hr old data.
Some SP have data that isn't even a model, such as XTRP. That is just a straight-line extrapolation of the storm's current direction. And not every model works the same way. Some are new and somewhat "experimental", while others a very solid.
