<Li> Ice pellets (Diamond dust) </Li> <Li> Rain (Freezing rain) </Li> <Li> Snow <Ul> <Li> Rain and snow mixed </Li> <Li> Snow grains </Li> <Li> Snow roller </Li> <Li> Slush </Li> </Ul> </Li> <Ul> <Li> Rain and snow mixed </Li> <Li> Snow grains </Li> <Li> Snow roller </Li> <Li> Slush </Li> </Ul>

When does the severe weather officially become a thunderstorm