Invest 98l Meaning And. Invest 98l, the tropical system that’s expected to head into the gulf of mexico next week, reached the caribbean sea on thursday and is expected to become. A tropical disturbance, invest 98l, is located well off the southeast coast.

On weather.com and the weather channel you may hear us use the term invest (short for investigation) followed by the numbers 90 through 99 and either the. Faster development = turn north sooner.