A series of NASA infrared images of Hurricane Joaquin from October 1 to 6 show the development and movement of the storm, and its moisture stream into South Carolina.
The Atmospheric Infrared Sounder or AIRS instrument flies aboard NASA's Aqua satellite, which circles the Earth twice a day. AIRS gathers temperature data using infrared light, and took many images of Hurricane Joaquin from October 1 through October 6.
NASA put together a timeline of the infrared imagery showing the movement of Hurricane Joaquin and the plume of moisture connected to the Category Four storm that streamed over South Carolina.
The AIRS imagery showed Joaquin over the Bahamas on October 1 and then as it moved north, connected with another weather system that brought intense rainfall and both inland and coastal flooding to South Carolina.
That moisture plume is visible on the AIRS imagery from October 2 through October 4 where thunderstorms with very high, cold cloud tops made a line from the Bahamas to the U.S. mainland. Cloud top temperatures in the line of storms were as cold as or colder than -63 Fahrenheit/-53 Celsius. NASA research has shown that cloud tops that cold can produce heavy rain.
Cloud top temperatures around the eye of Hurricane Joaquin were even colder. Some cloud tops were in excess of -81F/-63C/210K.
Looking at Joaquin's Winds
As AIRS looked at cloud top temperatures another NASA instrument looked at surface wind speed in Joaquin. On October 7 at 12:00 a.m. EDT, the RapidScat instrument that flies aboard the International Space Station saw the sustained winds in Hurricane Joaquin. Strongest winds measured 40.5 meters per second (90.6 mph/145.8 kph) in all quadrants of the storm except the northeastern quadrant where winds were less intense. RapidScat measures wind speed at the surface which is always lower than speeds at higher altitude.
Where is Joaquin Now?
At 11 a.m. EDT (1500 UTC) on October 7, 2015 the center of Tropical Storm Joaquin was located near latitude 41.0 North and longitude 45.6 West. That's about 540 miles (870 km) southeast of Cape Race Newfoundland, Canada. Joaquin was moving toward the east-northeast near 35 mph (56 km/h) and the National Hurricane Center expects that motion to continue for the next day or two with some decrease in forward speed forecast on Friday.
Maximum sustained winds have decreased to near 70 mph (110 kph) and some weakening is forecast during the next 48 hours. Joaquin is forecast to become a large extratropical cyclone by Thursday.
Rob Gutro | EurekAlert!
Live from the ocean research vessel Atlantis
13.12.2018 | National Science Foundation
NSF-supported scientists present new research results on Earth's critical zone
13.12.2018 | National Science Foundation
What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...
A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.
The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...
A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.
Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...
Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...
What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.
Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...
12.12.2018 | Event News
10.12.2018 | Event News
06.12.2018 | Event News
13.12.2018 | Physics and Astronomy
13.12.2018 | Earth Sciences
13.12.2018 | Life Sciences