Understanding how weather forecasts are created as summarized below will help you understand why accurate weather measurement is important and it all begins with the weather station you choose.
What is weather and how it is forecasted:
- Moisture rises and rain falls down to the ground. This is the basic mechanism of weather. Good understanding of this basic phenomenon and accurate observations and meteorological measurements are keys to a reliable weather forecast.
- Sun is the major source of the energy in our atmosphere which drives our weather patterns. The other sources are earth’s rotation and heat of our plane from earth’s core.
- Sun heats our oceans and land masses which in turn release moisture into the atmosphere. Land tends to heat up faster since it has lower capacity to hold heat and this drives many short term weather phenomenon.
- Moisture reacting in the air with dust particles and mixing with hot and cold air masses creates clouds, rain and wind in a highly complex interaction.
- As air masses travel over deserts, mountains, plains or bodies of water, they interact each in a different way. Each interaction changes the air mass and the body with which it interacts causing at times very complex weather phenomenon and sometimes very hard to predict events like tornadoes or microbursts.
- Meteorologists run highly complex simulations based on satellite and ground observations which they feed into their weather models of the earth and local areas.
- Since weather forecast simulations are based on meteorological measurements from ground based weather stations, they can only be as accurate as our measurements and observations.