Forecasters said there was “significant uncertainty” about where the tropical storm will go and how intense it could become. Spaghetti models are one of several tools forecasters use.

Supercomputers and machine learning are changing the way we forecast hurricanes. Hurricane danger reaches far beyond the coast with flooding rains and violent winds. Forecasting takes more than radar. It relies on supercomputers, machine learning and 3D ...

Editor's Note: Hurricane Gabrielle continues on its path. See the latest update for Wednesday, Sept. 24. Hurricane Gabrielle has picked up strength as it continues to move northeastward into open water, according to the National Hurricane Center.