Has there been any thought about developing a snowfall forecast built into Tempest? This is a feature that I love in AccuWeather. I would think that it would be possible to add this since a snowfall accumulator that accurately depicts snow (as the rain sensor currently does) is not possible in the current Tempest setup.
Also, an accumulation map would also be very helpful in determining the amount of snow for your given area. I know, you can go out in your yard or on your deck and measure with a yard stick, but you can also measure the rain with a $2 gauge. Adding some snow features to the all ready great Tempest app would be fantastic.