Following on from Thursday's musing on blank tephigrams, today's musing takes a look at a stable atmospheric profile on a tephigram. Below is the forecast profile for the Norwich Weather Centre at 07.00am on Saturday 3rd August. (Forecast profiles can be obtained from Weather Online). The temperature profile through the atmosphere

Over the next few days, with thunderstorms in the forecast, meteorologists will be looking to tephigrams (or t-phi-grams) in order to quickly assess the stability or instability of the atmosphere at a given point and time. The tephigram is one of a few thermodynamic diagrams used in analysis and forecast.