Stronger wind shear may cause some weakening shortly before landfall, but Isaias is still expected to remain a dangerous hurricane with life-threatening storm surge, damaging winds, and heavy rain.

Sustained winds are considered “damaging” when they reach 50 knots, or 58 m.p.h., and can start to break tree limbs and tear off roof shingles. More widespread damage occurs as winds reach and exceed hurricane force, which is 74 m.p.h.

Not a single hurricane has formed in the Atlantic since this year’s season kicked off — a calm stretch through the end of September unmatched since satellite tracking began 60 years ago. This marks a first for the era of satellite observation — which began in 1966 — with no hurricanes forming in the Atlantic before Oct.

In November 2025, NASA and its European partners launched the Sentinel-6B satellite to improve hurricane forecasts, help protect infrastructure and benefit commercial industries, including shipping. The satellite is now flying 30 seconds behind its ...

Not a single hurricane has formed in the Atlantic since this year’s season kicked off — a calm stretch through the end of September unmatched since satellite tracking began 60

Isaias made landfall near Destin, Fla., around 8:30 p.m. Friday with maximum sustained winds of 105 mph, the National Hurricane Center said.