When is Tropical Storm Gabrielle expected to strengthen into a hurricane?
The weather system that’s Tropical Storm Gabrielle is expected to intensify into a hurricane by the end of Sunday, according to the National Hurricane Center’s forecast.
Here’s the latest from the hurricane center.
Tropical Storm Gabrielle (for now)
Where Gabrielle is and where the storm is headed: Gabrielle was about 390 miles southeast of Bermuda and moving northwest at 12 mph.
“This general motion should continue through (Sunday night),” the hurricane center said. “A turn toward the north is forecast on Monday, followed by a faster northeastward or east-northeastward motion on Tuesday. On the forecast track, the center of Gabrielle is expected to pass east of Bermuda on Monday.”
Gabrielle’s strength and size: Gabrielle brings maximum sustained winds of 65 mph, and tropical storm force winds blow up to 140 miles from the storm’s center.
“Gabrielle is expected to become a hurricane later today, and rapid intensification is possible over the next day or so,” the hurricane center’s 11 a.m. public advisory said.
Watches and warnings: None, but Bermuda should pay attention.
Rain, wind, surf hazards: There could be fatally dangerous rip currents on the U.S. East Coast from North Carolina north all the way into Canada’s Atlantic coasts.
Next advisory: 5 p.m.
Another system in the Atlantic Ocean?
There’s a massive tropical wave in the central tropical Atlantic very west-southwest of the Cabo Verde Islands.
“Although environmental conditions are not favorable for development by the middle to latter part of this week, a tropical depression could form while the system moves west-northwestward across the Central Atlantic,” the hurricane center said.
Formation chance by Tuesday afternoon: near zero percent.
Formation chance before Saturday afternoon: 40%.
This story was originally published September 21, 2025 at 11:36 AM.
