NASA investigates Gabrielle's remnants and new Tropical Storm Humberto

Sep 09, 2013
NOAA's GOES-East satellite captured a view of Tropical Storm Humberto (far right) and the remnants of Tropical Storm Gabrielle near the Bahamas on Sept. 9 at 7:45 a.m. EDT. Credit: NASA GOES Project

Tropical Depression Nine formed yesterday, Sept. 8 in the far eastern Atlantic, and NASA's Aqua satellite saw it strengthen into Tropical Storm Humberto today, Sept. 9 at 5 a.m. EDT. As that storm strengthened, the remnants of the once-tropical-storm Gabrielle continued to struggle near the Bahamas as NASA's HS3 mission investigated.

Tropical Storm Humberto is affecting the Cape Verde Islands, so there's a tropical in up for the southern islands of Maio, Santiago, Fogo, and Brava.

NASA's Aqua satellite passed over Tropical Storm Humberto hours before it was designated a tropical storm, and the Atmospheric Infrared Sounder instrument called "AIRS" captured on the storm. The AIRS data showed that some strong had developed around the center of circulation that were acting as a "" for the storm and strengthening it. Cloud-top temperatures of those powerful thunderstorms were colder than -63F/-52C, and at the National Hurricane Center expect Humberto to continue strengthening in the short term. The image also showed that the most powerful thunderstorms, the ones with the coldest cloud top temperatures, were just south of the Cape Verde Islands at the time Aqua flew overhead. Humberto has since moved closer to some of the southern islands bringing rain and gusty winds today.

NASA's Hurricane and Severe Storms Sentinel or HS3 mission gathered data over Gabrielle's remnants over the weekend of Sept. 7 and 8. NASA's Global Hawk 872, or NASA 872 departed from NASA's Wallops Flight Facility, Wallops Island, Va. on Saturday, Sept. 7 at 8:07 a.m. EDT and flew over the remnants of Gabrielle as it lingered north of the Dominican Republic. NASA 872 dropped dropsondes and took various measurements of the remnants during its flight.NASA 872 ended flight upon landing back at NASA's Wallops Flight Facility, Wallops Island, Va. on Sunday, Sept. 9 at 7:17 a.m. EDT.

NASA's Aqua satellite passed over Humberto on Sept. 9 and detected cloud-top temperatures of powerful thunderstorms (purple) that were colder than -63F/-52C. Credit: NASA JPL/Ed Olsen

At 8 a.m. on Sept. 9 the center of Tropical Storm Humberto was located near latitude 13.4 north, longitude 23.3 west, just 92 nautical miles south of Praia, in the Cape Verde Islands. Humberto is moving toward the west near 12 mph/19 kph, and the storm is expected to turn to the west-northwest. Maximum sustained winds are near 40 mph/65 kph and is expected to briefly become a hurricane over the next day or two before weakening again.

The National Hurricane Center noted that the center of Humberto will pass south of the southern Cape Verde Islands this afternoon and tonight and pass west of the islands on Tuesday, Sept. 10.

Meanwhile, an elongated area of low pressure that include the remnants of Gabrielle are still lingering in the western Atlantic. That broad area of low pressure is located about 500 miles south-southwest of Bermuda. Because of wind shear on Sept. 9, the shower and thunderstorm activity remains displaced to the east of the center as it was on Sunday, Sept. 8. Upper-level winds are not expected to be conducive for significant development while the low moves northeastward to north-northeastward during the next several days. This system has a low chance, 10 percent, of becoming a tropical cyclone during the next two days

Farther west, the National Hurricane Center noted that a low pressure area could form over the Bay of Campeche in the southwestern Gulf of Mexico in the next couple of days.

Explore further: Sept. 5, 2013 update 2—Satellite data shows a very active tropical Atlantic, Gabrielle weakens

add to favorites email to friend print save as pdf

Related Stories

From birth to death in four days: Kiko now a remnant low

Sep 03, 2013

A lot of things happen over a holiday weekend, and while people in the United States were celebrating Labor Day weekend, the Eastern Pacific Ocean's Tropical Storm Kiko came and went. Satellite data captured ...

NASA data showed Tropical Storm Erin forming

Aug 15, 2013

Infrared data from NASA's Aqua satellite showed strong thunderstorms had developed in the eastern Atlantic low pressure system that grew into Tropical Storm Erin. NASA's TRMM satellite noticed a "hot tower" ...

Recommended for you

Clean air: Fewer sources for self-cleaning

12 hours ago

Up to now, HONO, also known as nitrous acid, was considered one of the most important sources of hydroxyl radicals (OH), which are regarded as the detergent of the atmosphere, allowing the air to clean itself. ...

There's something ancient in the icebox

12 hours ago

Glaciers are commonly thought to work like a belt sander. As they move over the land they scrape off everything—vegetation, soil, and even the top layer of bedrock. So scientists were greatly surprised ...

Image: Grand Canyon geology lessons on view

19 hours ago

The Grand Canyon in northern Arizona is a favorite for astronauts shooting photos from the International Space Station, as well as one of the best-known tourist attractions in the world. The steep walls of ...

First radar vision for Copernicus

19 hours ago

Launched on 3 April, ESA's Sentinel-1A satellite has already delivered its first radar images of Earth. They offer a tantalising glimpse of the kind of operational imagery that this new mission will provide ...

User comments : 0

More news stories

There's something ancient in the icebox

Glaciers are commonly thought to work like a belt sander. As they move over the land they scrape off everything—vegetation, soil, and even the top layer of bedrock. So scientists were greatly surprised ...

China says massive area of its soil polluted

A huge area of China's soil covering more than twice the size of Spain is estimated to be polluted, the government said Thursday, announcing findings of a survey previously kept secret.

Clean air: Fewer sources for self-cleaning

Up to now, HONO, also known as nitrous acid, was considered one of the most important sources of hydroxyl radicals (OH), which are regarded as the detergent of the atmosphere, allowing the air to clean itself. ...

Better thermal-imaging lens from waste sulfur

Sulfur left over from refining fossil fuels can be transformed into cheap, lightweight, plastic lenses for infrared devices, including night-vision goggles, a University of Arizona-led international team ...

Hackathon team's GoogolPlex gives Siri extra powers

(Phys.org) —Four freshmen at the University of Pennsylvania have taken Apple's personal assistant Siri to behave as a graduate-level executive assistant which, when asked, is capable of adjusting the temperature ...