This sub-box generates a meteorological information box specifically targeted towards winter storms. When available, this box will change the header to reflect a winter storm category (such as a category provided by the Regional Snowfall Index). Otherwise, it will show a generic "Winter storm" header.
The winter storm category may be supplied using |category=. In the event that this storm has an RSI value, the |RSI= parameter can instead be used, and will automatically adjust the box to use imperial units instead of metric. The |basin= parameter can also be used to change this behavior; set it to atl or epac to switch the default units. To avoid units entirely, you may choose to pass text into the related values (e.g. pass {{convert|100|in|cm|abbr=on}}|maximum-rain= or |maximum-snow=), but this makes later maintenance difficult, and is not advised.
Template documentation