Basic WX Training #4 – Thunderstorm Life Cycle

Life CyclePre-DevelopmentAs solar radiation begins heating the Earth's surface each morning, the daily convective cycle begins. In other words, air nearest to the surface begins heating, rising, cooling, falling, and so on. This motion "mixes" the PBL, allowing for air parcels to come closer and closer to their LCL. DevelopmentAfter…

Basic WX Training #3 – Thunderstorm Ingredients

DefinitionsUpdraftThe column of rising air associated with a freely convecting air parcel. In "air-mass" thunderstorms, the updraft is observable as a rapidly ascending cumulus tower (cumulus calvus). DowndraftA body of air which is descending due to a density differential (colder than surrounding air) and is accompanied by precipitation. Planetary Boundary…