A large area of atmospheric instability off the east coast of Florida may develop into a tropical system in the coming days. While no storm has formed yet, the National Hurricane Center (NHC) has warned that the disturbance will move westward, crossing the Florida Peninsula and potentially gaining strength as it enters the warmer waters of the northeastern Gulf of Mexico.
Potential development of tropical storm “Dexter”
Since the early hours of Monday, July 14, a low-pressure system near the eastern coast of Florida has been producing scattered showers and disorganized thunderstorms. According to the latest update from the NHC, this atmospheric disturbance is expected to move west, crossing Florida before reaching the northeastern Gulf of Mexico by Tuesday night or early Wednesday.
If the system organizes, it would be named “Dexter”, making it the fourth named storm of the 2025 season—a nearly one-month head start compared to the average schedule, where the fourth storm typically forms around August 15.
A pattern similar to the storm that produced Chantal
Meteorologist Elizabeth Danco from AccuWeather noted that this system is forming along a stationary front, similar to the one that led to the development of tropical storm Chantal in early July. That storm formed from the interaction between a weak trough and a front that stalled over the region.
Chantal made landfall in the Carolinas on July 6, bringing torrential rainfall. In places like Chapel Hill, North Carolina, rainfall totals in just one day were equivalent to an entire month of precipitation.
This time, the front appears weaker, and the jet stream is less active, but wind shear is also low, which could help support the formation of a tropical storm. The chance of development remains low (10%) over the next 48 hours, but could increase to 30% over the next seven days, according to the official NHC forecast signed by meteorologist Kelly.
Expected impact across the southeastern United States
Even if the disturbance doesn’t become a tropical storm, its weather impacts will be felt across multiple southeastern states. From Monday through Thursday, persistent rain is expected, especially across northern and central Florida. Heavy rainfall, the threat of flash flooding, and dangerous marine conditions are the main concerns for the week.
In addition, elevated surf and rip currents are likely along much of the Atlantic coast, from Florida up through North Carolina, disrupting boating and beach activities.
An unusually early and active hurricane season
Although the first storm of the season arrived later than usual, the 2025 Atlantic hurricane season has already shown above-average activity for mid-July. So far, three named storms have formed, while typically the third named system doesn’t appear until early August.
This accelerated pace has led meteorologists to adjust their seasonal forecasts, anticipating a more active season than initially expected.
Still, not all parts of the Atlantic basin are favorable for development. Large plumes of Saharan dust, combined with unfavorable winds, continue to suppress storm formation in the eastern Atlantic, near the African coast—a region that often gives rise to the most intense hurricanes.
