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Humberto Strengthening as Nearby System Raises Uncertain U.S. East Coast Risk

Upcoming reconnaissance flights plus new model data should sharpen forecasts within 72 hours.

Overview

  • NHC says Tropical Storm Humberto is over the western Atlantic and is forecast to become a hurricane this weekend.
  • Invest 94L near the northeastern Caribbean has a high chance of developing as it approaches the Bahamas and has already caused deadly flooding in Puerto Rico.
  • Forecasters warn the close proximity of Humberto and 94L could lead to storm interaction, including a Fujiwhara-type effect, which increases uncertainty in track and intensity.
  • Officials urge residents along parts of the U.S. East Coast, including Florida and the Southeast, to monitor updates due to potential hazards such as dangerous surf and rip currents.
  • Hurricane Gabrielle is racing toward the Azores under hurricane warnings and is expected to turn post-tropical later, with its remnants projected to influence weather toward Iberia.