I'm pretty new at this model stuff, but if I understand it right, the stratosphere is not as dense as the troposphere so it is easier to model, something at T360 in the strat is about the same as something at T180 in the trop. So, this is right on the edge of possibilities and if the models are still showing it in a couple of days time we could be onto something .
Please forgive and correct me if I'm wrong