On Thursday, April 5, 2018 at 2:08:02 AM UTC+12, Emir Sherbi wrote:
El martes, 3 de abril de 2018, 18:34:39 (UTC-3), Waveguru escribió:
Some days the thermals are big, and some days they are very small in diameter and it doesn’t seem to have anything to do with their strength or height. Do any of you know what determines their size? It seems that on the days they are small, they stay small all day, and vise versa.

Boggs

Generally, when you take out all the other individual factors, is the atmospheric pressure

In what way?

In any given location and altitude, atmospheric pressure seldom varies by more than 3% from the average. Thermal sizes vary a lot more than that day to day.