From what I understand, many pyro techs are being asked to report to work on 3/29. Likely because the pyro on hand does have an expiration date. I would expect it is either to destroy or ignite them. Since destructions takes more paper work than actually igniting them, I would suspect there will be some unannounced fireworks happening next week.
Keep in mind that the pyrotechnics are ordered months in advance. So there are likely still orders coming in that there is no room to store. Lighting them off makes more sense than trying to find temp storage.