The LBar Model is a two-dimensional track prediction model that is initialized with vertically-averaged winds and upper atmospheric air pressures from the Aviation run of the MRF global model. It is often different from many other models for this reason.
The XTRap is just "extrapolated", as the person before me explained. X Trap iS NOT a computer model, but, indicates the direction in which the current storm is moving, and where it would move if it continued at the current speed and direction.
-------------------- Don't diss the weather. If the weather didn't change every once in a while, 9/10ths of the people in this world couldn't start a conversation.
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