NASA infrared imagery shows Hagupit nearing landfall in China

August 04, 2020

NASA's Aqua satellite provided a look at Typhoon Hagupit as it was nearing landfall in southeastern China. One of the ways NASA researches tropical cyclones is using infrared data that provides temperature information. Cloud top temperatures provide information to forecasters about where the strongest storms are located within a tropical cyclone. Tropical cyclones do not always have uniform strength, and some sides have stronger sides than others. The stronger the storms, the higher they extend into the troposphere, and the colder the cloud temperatures.

On Aug. 3 at 1:41 p.m. EDT (1741 UTC) NASA's Aqua satellite analyzed Hagupit using the Atmospheric Infrared Sounder or AIRS instrument. Aqua passed over Hagupit less than 2 hours before its official landfall.

The infrared data showed the bulk of the storms were southeast of the center because of vertical wind shear or outside winds pushing against the storm from the northwest.

AIRS found coldest cloud top temperatures as cold as or colder than minus 63 degrees Fahrenheit (minus 53 degrees Celsius). NASA research has shown that cloud top temperatures that cold indicate strong storms that have the capability to create heavy rain.

China's National Meteorological Center reported that Hagupit made landfall China's Zhejiang province on the coastal areas of Yueqing City at around 3:30 a.m. local time on Aug. 4 (3:30 p.m. EDT on Aug 3). At the time of landfall, Hagupit had maximum sustained winds near 85 mph (137 kph), equivalent to a Category 1 hurricane.

At 5 a.m. EDT (0900 UTC) on Aug. 4, the Joint Typhoon Warning Center noted that Tropical depression Hagupit was centered near latitude 29.8 degrees north and longitude 120.3 degrees east, about 104 nautical miles southwest of Shanghai, China. Hagupit was moving to the north with maximum sustained winds decreasing to 30 knots (35 mph/56 kph).

Hagupit is moving inland over eastern China and the Joint Typhoon Warning Center forecasts that it will reemerge into the Yellow Sea on Aug. 5, but adverse conditions will lead to Hagupit's dissipation.

The AIRS instrument is one of six instruments flying on board NASA's Aqua satellite, launched on May 4, 2002.

For more than five decades, NASA has used the vantage point of space to understand and explore our home planet, improve lives and safeguard our future. NASA brings together technology, science, and unique global Earth observations to provide societal benefits and strengthen our nation. Advancing knowledge of our home planet contributes directly to America's leadership in space and scientific exploration.

For updated forecasts, visit:

NASA/Goddard Space Flight Center

Related Tropical Cyclones Articles from Brightsurf:

Scientists define binary tropical cyclones
A new research established an objective standard for defining binary tropical cyclones.

Effective government saves lives in cyclones, other disasters
Effective national and local governments are associated with fewer deaths from tropical cyclone disasters -- even in countries with similar levels of wealth and development.

New dataset provides county-level exposure numbers for tropical cyclones, human health
The new open source data set can be used for epidemiological research on tropical cyclones.

Tropical cyclones moving faster in recent decades
Tropical cyclones, regionally known as hurricanes or typhoons, have been moving across ocean basins faster since 1982, according to a new study by researchers at the University of Hawaii at Manoa.

NASA finds post-Tropical Cyclone Dolly exiting the tropical stage
NASA's Terra satellite provided a night-time look at what is now Post-Tropical Storm Dolly in the Northern Atlantic Ocean.

Stronger tropical cyclones strengthen the Kuroshio Current, further heating high latitudes
As the intensity and frequency of the strongest cyclones east of Taiwan have increased, so has the strength of the Kuroshio current, a Pacific current responsible for redistributing heat throughout the western North Pacific Ocean.

Cyclones can damage even distant reefs
Big and strong cyclones can harm coral reefs as far as 1000 kilometres away from their paths, new research shows.

Study: Climate change has been influencing where tropical cyclones rage
While the global average number of tropical cyclones each year has not budged from 86 over the last four decades, climate change has been influencing the locations of where these deadly storms occur, according to new NOAA-led research published in Proceedings of the National Academy of Science.

Using cloud-precipitation relationship to estimate cloud water path of mature tropical cyclones
Scientists find the cloud water path of mature tropical cyclones can be estimated by a notable sigmoid function of near-surface rain rate.

NASA measures rainfall rates in two American Samoa Tropical Cyclones
There are two tropical cyclones affecting American Samoa in the South Pacific Ocean on Feb.

Read More: Tropical Cyclones News and Tropical Cyclones Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to