Humberto Strengthens Into a Hurricane

Former Tropical Storm Humberto strengthened into a hurricane on Sunday evening.  At 11:00 p.m. EDT on Sunday the center of Hurricane Humberto was located at latitude 29.4°N and longitude 77.6°W which put it about 785 miles (1260 km) west of Bermuda.  Humberto was moving toward the northeast at 3 m.p.h. (5 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 988 mb.

Former Tropical Storm Humberto strengthened steadily on Sunday and the circulation exhibited greater organization.  The inner end of a rainband wrapped around the center of circulation and an eye appeared to be developing.  There was a broken ring of thunderstorms around the developing eye and the strongest winds were occurring in the eastern side of the ring.  Bands of showers and thunderstorms were revolving around the core of Hurricane Humberto.  There were more rainbands in the eastern half of the circulation.  Winds to hurricane force extended out about 25 miles (40 km) from the center of circulation.  Wind to tropical storm force extended out about 150 miles (240 km) on the eastern side of Humberto and out about 70 miles (110 km) on the western side.

Hurricane Humberto will move through an environment favorable for intensification during the next two to three days.  Humberto will move over water where the Sea Surface Temperature is near 29°C.  Am upper level trough over the eastern U.S. will produce southwesterly winds which will cause some vertical wind shear.  However, the shear will not be strong enough to prevent intensification.  Hurricane Humberto will intensify during the next 24 to 48 hours and it could strengthen into a major hurricane.

Hurricane Humberto moved around the western end of a subtropical high pressure system over the western Atlantic Ocean.  Humberto will move slowly toward the northeast on Monday.  The upper level trough and the subtropical high will combine to steer Humberto toward the east during the next few days.  On its anticipated track Hurricane Humberto could approach Bermuda by late on Wednesday.