Humberto Forecast to Become a Powerful Extratropical Cyclone Later Today

SUMMARY OF 10:00 AM CT
LOCATION…36.8N 60.0W
ABOUT 415 MI…665 KM NE OF BERMUDA
MAXIMUM SUSTAINED WINDS…110 MPH…175 KM/H
PRESENT MOVEMENT…NE OR 50 DEGREES AT 24 MPH…39 KM/H
MINIMUM CENTRAL PRESSURE…955 MB…28.20 INCHES

There are no coastal watches or warnings in effect.

Humberto is still a powerful hurricane, but the system is in the process of transitioning to an extratropical cyclone. Satellite images indicate that frontal features have formed, and cooler and drier air is wrapping around the western and southern sides of the circulation. Deep convection is most organized to the north and west of the partially exposed low-level center. The initial intensity is lowered to 95 kt for this advisory.

A mid- to upper-level low situated just west of Humberto has been aiding in its transition, and the global models suggest that Humberto will become fully extratropical later today. Despite the fact that the cyclone is expected to lose its tropical characteristics, it is still forecast to produce winds of hurricane-force for another 36 hours or so.

Humberto is moving northeastward at 21 kt. A turn to the north-northeast with a decrease in forward speed is expected later today and tonight as Humberto rotates around the north side of the mid- to upper-level low. After that, a faster east-northeast or east motion is expected, as the system becomes embedded in the mid-latitude westerlies. The cyclone should be absorbed by another extratropical low in about 3 days over the far north Atlantic.

Key Messages: Large swells will continue to affect Bermuda, the northwestern Bahamas, and the east coast of the United States from east-central Florida to the Mid-Atlantic States during the next couple of days. These swells could create life-threatening surf and rip current conditions.

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