Nav: Home

NASA sees wind shear affecting Tropical Storm Fiona

August 19, 2016

An image from NASA's Aqua satellite showed that southwesterly wind shear was affecting Tropical Storm Fiona, pushing clouds to the northeast of the center.

On August 18 at 12:05 p.m. EDT (16:05 UTC) the Moderate Resolution Imaging Spectroradiometer or MODIS instrument that flies aboard NASA's Aqua satellite provided a visible light image Fiona. The image showed that strong thunderstorms and deep convection (rising air that forms them) circled the center and were being pushed to the northeast of the center.

The National Hurricane Center (NHC) reported microwave data suggest the center is near or south of the main area of thunderstorms, which is a sign of the ongoing southwesterly shear.

At 5 a.m. EDT (0900 UTC) on Aug. 19 the center of Tropical Storm Fiona was located near 17.6 degrees north latitude and 42.7 degrees west longitude. That's about 1,240 miles (1,995 km) west of the Cape Verde Islands.

Fiona was moving toward the west-northwest near 10 mph (17 kph), and this general motion with some increase in forward speed is expected over the next couple of days. Maximum sustained winds are near 45 mph (75 kph) with higher gusts. The estimated minimum central pressure is 1006 millibars.

NHC forecaster Blake said that "Little significant change is expected with Fiona's intensity today due to gradually increasing shear. The storm should weaken over the weekend as the shear further increases, along with the likely entrainment of drier mid-level air."
-end-


NASA/Goddard Space Flight Center

Related Thunderstorms Articles:

NASA sees 'nada' strength left in Tropical Cyclone Nada
NASA's Aqua satellite flew over Tropical Cyclone Nada in the Northern Indian Ocean and infrared imagery showed that Nada had 'nada' in terms of strong thunderstorms.
Lightning strikes: Thunderstorms spread mercury pollution
In a new study published in the journal Environmental Science and Technology, Assistant Professor of Meteorology Christopher Holmes writes that thunderstorms have 50 percent higher concentrations of mercury than other rain events.
NASA's Aqua Satellite sees Tropical Depression Kay sevoid of strength
NASA's Aqua satellite saw continually weakening Tropical Depression devoid of thunderstorms when it passed overhead early today, Aug.
NASA's GPM sees towering thunderstorms in intensifying Tropical Storm Earl
Tropical storm Earl has been intensifying as it moves through the Caribbean Sea.
NASA's GPM satellite examines tornadic thunderstorms
The Global Precipitation Measurement, or GPM, mission core satellite, a joint mission between NASA and the Japan Aerospace Exploration Agency, measured heavy rainfall in severe storms early on Friday, April 1, in the southern U.S.
NASA's GPM satellite examines violent thunderstorms
Severe weather moved through the southern US on Feb. 2-3, and NASA's Global Precipitation Measurement or GPM core satellite examined the violent thunderstorms.
NASA's GPM reveals very strong thunderstorms in Typhoon Choi-Wan
NASA's GPM satellite saw strong thunderstorms remained in Typhoon Choi-wan as the storm continued to weaken.
NASA sees thunderstorms flaring up on Halola's eastern side
NASA infrared satellite imagery taken early on July 17 shows strong thunderstorms on the eastern side of Tropical Storm Halola.
Small thunderstorms may add up to massive cyclones on Saturn
In a paper published today in the journal Nature Geoscience, atmospheric scientists at MIT propose a possible mechanism for Saturn's polar cyclones: over time, small, short-lived thunderstorms across the planet may build up angular momentum, or spin, within the atmosphere -- ultimately stirring up a massive and long-lasting vortex at the poles.
Satellite shows Blanca's remnant moisture over New Mexico today
Today, June 10, the remnant moisture from Blanca is now over New Mexico where it is expected to generate some isolated to scattered thunderstorms.

Related Thunderstorms Reading:

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Digital Manipulation
Technology has reshaped our lives in amazing ways. But at what cost? This hour, TED speakers reveal how what we see, read, believe — even how we vote — can be manipulated by the technology we use. Guests include journalist Carole Cadwalladr, consumer advocate Finn Myrstad, writer and marketing professor Scott Galloway, behavioral designer Nir Eyal, and computer graphics researcher Doug Roble.
Now Playing: Science for the People

#530 Why Aren't We Dead Yet?
We only notice our immune systems when they aren't working properly, or when they're under attack. How does our immune system understand what bits of us are us, and what bits are invading germs and viruses? How different are human immune systems from the immune systems of other creatures? And is the immune system so often the target of sketchy medical advice? Those questions and more, this week in our conversation with author Idan Ben-Barak about his book "Why Aren't We Dead Yet?: The Survivor’s Guide to the Immune System".