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NASA's wide view of major hurricane Humberto's massive Atlantic 'tail'

September 18, 2019

NASA's Aqua satellite is one in a fleet of NASA satellites that provide data for research. NASA's Aqua satellite provided a visible image of Major Hurricane Humberto and its very long "tail" of thunderstorms stretching past eastern Canada.

Hurricanes are the most powerful weather event on Earth. NASA's expertise in space and scientific exploration contributes to essential services provided to the American people by other federal agencies, such as hurricane weather forecasting.

On Sept. 18, the Moderate Imaging Spectroradiometer or MODIS instrument that flies aboard NASA's Aqua satellite passed over the northern Atlantic Ocean and gathered images of Hurricane Humberto. Humberto is such a large storm that the Aqua satellite had to make two Earth orbits to capture the entire storm. At NASA's Goddard Space Flight Center in Greenbelt, Maryland, those images were put together to form a complete picture of Humberto.

Although Humberto's eye was just about 490 miles (785 km) west-southwest of Bermuda at the time of the Aqua overpass, the thick band of thunderstorms east of the center stretched beyond eastern Canada!

On Sept. 19, the National Hurricane Center (NHC) said, "Humberto's satellite presentation continues to be outstanding with a large ragged eye and surrounded by deep convection."

The NHC said, "At 8 a.m. EDT (1200 UTC), the eye of Hurricane Humberto was located by satellite near latitude 31.8 degrees north and longitude 68.9 degrees west. Humberto has increased its forward speed and is moving toward the east-northeast near 16 mph (26 kph). This general motion with an additional increase in forward speed is expected through early Thursday, followed by a northeastward to north-northeastward motion through Friday.

Maximum sustained winds are near 115 mph (185 kph) with higher gusts.  Humberto is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale.  Some fluctuations in intensity are likely during the next day or so, but Humberto should remain a powerful hurricane through early Thursday.  A steady weakening trend should begin later on Thursday, Sept. 19.

Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km).  The estimated minimum central pressure is 951 millibars.

On the NHC forecast track, the core of Humberto is expected to pass just to the northwest and north of Bermuda later tonight.
-end-
For updated forecasts, visit: https://www.nhc.noaa.gov

By Rob Gutro
NASA's Goddard Space Flight Center

NASA/Goddard Space Flight Center

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