Given the current situation in many regions of the US, it is assured that demand for plywood and other panel sheathing is going to increase in the short-term.
There are much fewer producers of this essential building material than there are regular sawmills of North American construction framing dimension softwood lumber. As well, input costs for wood panel products are much higher.
A spike in demand, whether for immediate repair needs or longer-term rebuilding, for Plywood and Oriented Strand Board (OSB) always causes a surge in price. If it is a brief, sudden circumstance, plywood prices will pop for three weeks or so then settle back down. If for a more long-term impact (for example: rebuilding an entire town after forest fire) wood panel products will sell at higher prices for a longer time.