[header] How to store a propane tank outside [title] Don't leave your tank inside or in a shed. [step] If gas were to leak, it would contaminate the area and make it dangerous. Even the spark of starting a vehicle or lawn mower could ignite a propane leak. 
[substeps] If you live in a snowy area, mark the location of your tank in case it gets buried so you can easily find it and clear away snow. [title] Store the tank in a dry, well-ventilated outdoor area.