I am building a fun little app to determine if I should bike to work.
I would like to test to see if it is either Raining or Thunderstorm(ing).
publi
You should be using the Flags attribute on your enum. Beyond that, you also need to test to see if a particular flag is set by:
(currentWeather.Type & WeatherType.Thunderstorm == WeatherType.Thunderstorm)
This will test if currentWeather.Type has the WeatherType.Thunderstorm flag set.