Public Release: 

NASA-NOAA's Suomi NPP Satellite sees Norman rapidly intensifying

NASA/Goddard Space Flight Center


IMAGE: On Sept. 4, 2018 at 7:24 p.m. EDT (2324 UTC) the VIIRS instrument aboard NASA-NOAA's Suomi NPP satellite provided a visible image of Hurricane Norman in the Central Pacific Ocean.... view more 


NASA-NOAA's Suomi NPP analyzed Hurricane Norman in the Central Pacific Ocean as it was rapidly intensifying into a major hurricane.

On Sept. 4 at 7:24 p.m. EDT (2324 UTC) the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite captured a visible image of Hurricane Norman. The visible image revealed good formation with bands of thunderstorms spiraling into a cloud-filled eye. At the time, Norman was a Category 1 hurricane on the Saffir-Simpson hurricane wind scale with maximum sustained winds near 80 mph (70 knots/129.6 kph).

During the early morning on Sept. 5, maximum sustained winds rapidly intensified from 85 knots to 100 knots.

At 11 a.m.  EDT (5 a.m. HST/1500 UTC) maximum sustained winds have increased to near 115 mph (100 knots/185 kph) with higher gusts, and Norman is now a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are possible today, followed by gradual weakening from tonight.

The center of Hurricane Norman was located near latitude 19.5 degrees north and longitude 147.7 degrees west. That's 480 miles (775 km) east of Hilo, Hawaii. Norman is moving toward the west near 12 mph (19 kph), and this general motion is expected to continue through this morning. Norman is expected to slow its forward motion slightly, and turn toward the west-northwest later today and tonight. A turn toward the northwest is expected Thursday and Thursday night.

Norman is expected to remain a hurricane through Thursday, Sept. 6.


For updated forecasts on Norman, visit:

By Rob Gutro
NASA's Goddard Space Flight Center

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