An 'invest' is a term used by the National Hurricane Center to describe a weather system they are closely monitoring for potential tropical development. It serves as an early alert that a tropical disturbance may be forming.

When an area is labeled as an invest, it indicates that forecasters have observed initial signs suggesting it could evolve into a tropical depression or even a hurricane. This designation enables them to initiate specialized computer models to forecast its potential trajectory and strength. It also authorizes them to collect additional data, sometimes deploying hurricane hunter aircraft for closer examination.

These hurricane hunter planes are equipped with a variety of instruments to measure parameters such as wind speed, pressure, and temperature. The data they gather is essential for improving the accuracy of forecasts and gaining insights into the dynamics of the developing storm.

It's important to note that not all invests develop into named storms. Many of these areas of interest dissipate due to unfavorable environmental factors like strong wind shear or dry air. Therefore, while an invest warrants attention, it does not guarantee the formation of a hurricane.

The National Hurricane Center utilizes the invest designation to proactively monitor and forecast potential tropical cyclones. By closely tracking these systems, they can issue timely warnings and protect communities. Therefore, understanding the term 'invest' is a step in understanding the complex process of hurricane forecasting.