Nav: Home

NASA peers into the large clear eye of Hurricane Walaka

October 03, 2018

An infrared look by NASA's Terra satellite found a ring of intense storms around the wide eye of Hurricane Walaka in the Central Pacific Ocean. Walaka remains a dangerous category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale.

NOAA's Central Pacific Hurricane Center or CPHC cautioned on Oct. 3, "dangerous Hurricane Walaka is intensifying as it moves rapidly north toward the Papahanaumokuakea Marine National Monument and the Johnston Stoll remains in the south quadrant of Walaka."

A Hurricane Warning is in effect for Johnston Atoll, the Papahanaumokuakea Marine National Monument from French Frigate and Shoals to Maro Reef. A Tropical Storm Warning is in effect for Papahanaumokuakea Marine National Monument from Nihoa to French and Frigate Shoals.

On Oct. 3 at 5:45 a.m. EDT (0945 UTC) the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA's Terra satellite analyzed cloud top temperatures in infrared light. MODIS found cloud top temperatures of strongest thunderstorms ringed around the wide eye. Those temperatures were as cold as or colder than minus 80 degrees Fahrenheit (minus 62.2 degrees Celsius). They were embedded in a large area that circled the eye where cloud top temperatures were as cold as or colder than minus 70 degrees Fahrenheit (minus 56.6 degrees Celsius). Cloud top temperatures that cold indicate strong storms that have the capability to create heavy rain.

CPHC noted at 2 a.m. HST (8 a.m. EDT/1200 UTC), the center of Hurricane Walaka was located near latitude 18.9 degrees north and longitude 169.8 degrees west. That's about 150 miles (240 km) north of Johnston Island.

Walaka is moving toward the north near 14 mph (23 kph), and it is expected to turn toward the north-northeast with a faster forward motion later today and tonight. Maximum sustained winds are now near 140 mph (225 kph) with higher gusts. Some gradual weakening is possible starting from today or tonight through Thursday, but Walaka is forecast to remain a powerful hurricane when it crosses the Papahanaumokuakea Marine National Monument tonight.

CPHC said, "Walaka is forecast to turn toward the north with a slower forward speed starting Thursday. On this forecast track, the center of Walaka will likely reach the Papahanaumokuakea Marine National Monument tonight."

For updated forecasts, visit: http://www.prh.noaa.gov/cphc
-end-


NASA/Goddard Space Flight Center

Related Temperatures Articles:

An alloy that retains its memory at high temperatures
Even after the hundredth time the material returns to its original shape when heated.
New catalysts remove NOx pollutants at lower temperatures
Scientists from Tokyo Metropolitan University have developed a low-temperature catalyst for removing NOx gas from industrial exhaust using ammonia.
Cold temperatures linked to high status
Researchers have discovered that people associate cold temperatures with luxury items, which is important for companies that are trying to promote products that convey high status.
Archaea hold clues to ancient ocean temperatures
Scientists at Stanford have identified molecules that tough microbes use to survive in warming waters, opening a window more broadly into studying conditions in ancient seas.
Controlling temperatures for inexpensive plant experiments
Inexpensive, easy-to-use temperature controllers are able to provide reliable set temperatures for the detailed observation of developmental rates in response to different temperature treatments.
Changes in rainfall and temperatures have already impacted water quality
Changes in temperature and precipitation have already impacted the amount of nitrogen introduced into US waterways.
Study: How will tropical mammals react to rising temperatures?
How wildlife will react to climate change is an open question, but one of the first studies to compare the responses of tropical mammals to warmer habitats suggests the answer won't be as simple as 'move to a cooler place.'
Air temperatures in the Arctic are driving system change
A new paper shows that air temperature is the 'smoking gun' behind climate change in the Arctic.
Plants grow less in hotter temperatures
Researchers at the Nara Institute of Science and Technology (NAIST) report how two transcription factors, ANAC044 and ANAC085, pause the cell cycle when cells experience stress.
Catalyst advance removes pollutants at low temperatures
Researchers at Washington State University, University of New Mexico, Eindhoven University of Technology, and Pacific Northwest National Laboratory have developed a catalyst that can both withstand high temperatures and convert pollutants at near room temperature -- an important advance for reducing pollution in modern cars.
More Temperatures News and Temperatures Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Teaching For Better Humans 2.0
More than test scores or good grades–what do kids need for the future? This hour, TED speakers explore how to help children grow into better humans, both during and after this time of crisis. Guests include educators Richard Culatta and Liz Kleinrock, psychologist Thomas Curran, and writer Jacqueline Woodson.
Now Playing: Science for the People

#556 The Power of Friendship
It's 2020 and times are tough. Maybe some of us are learning about social distancing the hard way. Maybe we just are all a little anxious. No matter what, we could probably use a friend. But what is a friend, exactly? And why do we need them so much? This week host Bethany Brookshire speaks with Lydia Denworth, author of the new book "Friendship: The Evolution, Biology, and Extraordinary Power of Life's Fundamental Bond". This episode is hosted by Bethany Brookshire, science writer from Science News.
Now Playing: Radiolab

Space
One of the most consistent questions we get at the show is from parents who want to know which episodes are kid-friendly and which aren't. So today, we're releasing a separate feed, Radiolab for Kids. To kick it off, we're rerunning an all-time favorite episode: Space. In the 60's, space exploration was an American obsession. This hour, we chart the path from romance to increasing cynicism. We begin with Ann Druyan, widow of Carl Sagan, with a story about the Voyager expedition, true love, and a golden record that travels through space. And astrophysicist Neil de Grasse Tyson explains the Coepernican Principle, and just how insignificant we are. Support Radiolab today at Radiolab.org/donate.