Tracking the Tropics: What’s an invest?

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Every year when hurricane season approaches, you’ll start to see tropical talk centered around something called an “invest.” Invest is short for “investigation” and refers to a weather feature that the National Hurricane Center is investigating. Related: National Hurricane Center tracking Invest 90-L as it moves across FloridaIt should be noted that it is not necessarily an area that is expected to develop into a tropical system. It’s simply an area being investigated for any number of reasons.The NHC defines an invest as, “a weather system for which the NHC is interested in collecting specialized data sets and/or running model guidance. Once a system has been designated as an invest, data collection and processing is initiated on a number of government and academic websites.” Related: WESH 2 Hurricane Survival Guide 2024Areas of investigation in the Atlantic Basin are given numbers from 90-99. The first invest of a season will be named Invest 90-L. The “L” means it’s in the Atlantic (“A” is assigned to invests in the Arabian Sea, and “E” is for areas in the Eastern Pacific Ocean). The numbers repeat, which means the second invest of a season will get the name Invest 91-L. After Invest 99-L, the numbers recycle back to 90.The purpose of the numbers is to name which disturbance is being tracked since there is usually more than one happening at the same time.Related: Hurricane KidCast: What’s a hurricane? And more answers to kids’ questions

Every year when hurricane season approaches, you’ll start to see tropical talk centered around something called an “invest.”

Invest is short for “investigation” and refers to a weather feature that the National Hurricane Center is investigating.

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Related: National Hurricane Center tracking Invest 90-L as it moves across Florida

It should be noted that it is not necessarily an area that is expected to develop into a tropical system. It’s simply an area being investigated for any number of reasons.

The NHC defines an invest as, “a weather system for which the NHC is interested in collecting specialized data sets and/or running model guidance. Once a system has been designated as an invest, data collection and processing is initiated on a number of government and academic websites.”

Related: WESH 2 Hurricane Survival Guide 2024

Areas of investigation in the Atlantic Basin are given numbers from 90-99. The first invest of a season will be named Invest 90-L. The “L” means it’s in the Atlantic (“A” is assigned to invests in the Arabian Sea, and “E” is for areas in the Eastern Pacific Ocean). The numbers repeat, which means the second invest of a season will get the name Invest 91-L. After Invest 99-L, the numbers recycle back to 90.

The purpose of the numbers is to name which disturbance is being tracked since there is usually more than one happening at the same time.

Related: Hurricane KidCast: What’s a hurricane? And more answers to kids’ questions