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https://www.nbcphiladelphia.com/news/local/thick-black-smoke-rises-from-philadelphia-3-alarm-warehouse-fire/3551918/ make sure your windows are closed, and your air conditioner units are turned off. Emergency management officials also ask people to seal up windows etc if they are directly downwind from the location. Prepare to stay indoors for hours as the smoke extremely toxic. The location is between interstate 95 and the Delaware river.