I don't think that is a sign of an active PAC jet necessarily, however, the position of the ridging may imply some west coast troughing (-PNA)....the Hadley cell expansion is more of a longer term climate shift and while it does serve to augment se ridging, the primary impetus for a se ridge here would be the west coast trough resulting from the offshore position of that ridge.
You need to be careful about about how you incorporate the Hadley Cell expansion into forecasting because it is not a stochastic feature, like the blocking, etc.