SUMMARY: A hot and humid Tuesday afternoon in South Mississippi features temperatures near 93°F with heat indexes reaching around 102 to 108°F, prompting a heat advisory until 7 p.m. Light breezes at 5 mph provide slight relief. Tonight, temperatures will drop to the mid and upper 70s with increased humidity and light northwest winds. Tomorrow starts sunny with highs near 95°F around noon, but rain chances increase to 60% later, linked to a tropical disturbance in the Gulf that could bring heavy rain Wednesday afternoon and evening. Water conditions will worsen by Thursday, with rain chances remaining high through the week.

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SUMMARY: A tropical invest is an area under investigation for tropical activity but not yet named. These areas often bring heavy rain but typically don’t strengthen rapidly. When an invest develops a closed circulation, a well-defined center, and organized thunderstorms around the center, it becomes a tropical system. Tropical systems are classified by wind speeds: less than 39 mph is a tropical depression, 39 mph or greater is a tropical storm, and 74 mph or higher is a hurricane. Invests are numbered 90 to 99, cycling back to 90 after 99, with a letter suffix indicating the ocean basin, such as “L” for Atlantic.

‘Invest’ is typically used to describe disturbances that have not yet been named.

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SUMMARY: 07/15 Ryan’s “Quite Hot” Tuesday Forecast reports mostly clear skies over South Mississippi with light northwest winds at 6 mph. Tropical activity remains quiet in the Atlantic since storm Shantel, but a low-pressure system near Florida has a 40% chance of developing into tropical storm Dexter by Thursday to Saturday. Although not expected to be significant, it will bring several days of rainfall and possible coastal flooding. Today’s heat advisory warns of dangerous afternoon highs near 108°F. Rainfall will cool temperatures to the upper 80s by week’s end, but warmth in the 90s will return early next week as rain diminishes.

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