The National Hurricane Center (NHC) upgraded a low pressure area in the far eastern Atlantic Ocean to tropical storm Irma on August 30, 2017 at 11 a.m. EDT (1500 UTC).
Tropical cyclones that form in that part of the Atlantic Ocean are often the largest and most powerful hurricanes of the season. Hurricanes Ivan (2004), Isabel (2003), Hugo (1989) and Allen (1980) are examples of past powerful hurricanes that formed near the Cape Verde islands.
The Global Precipitation Measurement mission or GPM core observatory satellite flew above forming tropical storm Irma on August 30, 2017 at 1:56 a.m. EDT (0556 UTC). This new tropical cyclone was forming from a tropical wave that was passing to the east of the Cape Verde islands.
Scans by GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation
Radar (DPR) instruments (shown in lighter shades) revealed that heavy rain was falling in this area of strong convective storms. Rain falling at a rate of over 2.6 inches (66 mm) per hour was indicated by GPM's GMI.
DPR scanned storms to the west of the center of circulation and found rain dropping at rate of over 4.96 inches (126 mm) per hour. GPM's radar (DPR Ku band) showed that heights of convective storm tops located to the west of the forming tropical storm were reaching altitudes above 8.2 miles (13.2 km). GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency, JAXA.
At 11 a.m. EDT (1500 UTC), the center of Tropical Storm Irma was located near 16.4 degrees north latitude and 30.3 degrees west longitude. That's about 420 miles (675 km) west of the Cabo Verde Islands. Irma was moving toward the west near 13 mph (20 kph) and this general motion is expected to continue for the next couple of days.
Satellite wind data indicate that the maximum sustained winds are near 50 mph (85 kph) with higher gusts. Some strengthening is forecast during the next 48 hours and Irma could become a hurricane on Friday, Sept.1.
Infrared image of Irma's western side confirmed the data from GPM. An infrared image was taken from the AIRS instrument aboard NASA's Aqua satellite on Aug. 30 at 11:53 a.m. EDT (1553 UTC). AIRS found powerful storms with very cold cloud top temperatures as cold as minus 63 degrees Fahrenheit (minus 53 degrees Celsius). Storms with cloud tops that cold extend high into the troposphere and have the ability to generate heavy rainfall.
The National Hurricane Center (NHC) indicates that Irma is moving toward the west-northwest. Irma is then expected to stay at low latitudes next week while approaching the Lesser Antilles.
For updated forecasts, visit: http://www.
By Hal Pierce/Rob Gutro
NASA's Goddard Space Flight Center
Rob Gutro | EurekAlert!
"Flight recorder" of rocks within the Earth’s crust
16.04.2019 | Universität Bern
More than 90% of glacier volume in the Alps could be lost by 2100
09.04.2019 | European Geosciences Union
A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter
A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.
Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...
The technology could revolutionize how information travels through data centers and artificial intelligence networks
Engineers at the University of California, Berkeley have built a new photonic switch that can control the direction of light passing through optical fibers...
Physicists observe how electron-hole pairs drift apart at ultrafast speed, but still remain strongly bound.
Modern electronics relies on ultrafast charge motion on ever shorter length scales. Physicists from Regensburg and Gothenburg have now succeeded in resolving a...
Engineers create novel optical devices, including a moth eye-inspired omnidirectional microwave antenna
A team of engineers at Tufts University has developed a series of 3D printed metamaterials with unique microwave or optical properties that go beyond what is...
17.04.2019 | Event News
15.04.2019 | Event News
09.04.2019 | Event News
18.04.2019 | Life Sciences
18.04.2019 | Physics and Astronomy
18.04.2019 | Life Sciences