Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA's TRMM and GPM Satellites Analyze Hurricane Vance Before Landfall

06.11.2014

Hurricane Vance was a hurricane on Nov. 4 when the Tropical Rainfall Measuring Mission or TRMM satellite and the Global Precipitation Measurement (GPM) mission satellite passed overhead and measured its rainfall from space. TRMM and GPM revealed areas of heavy rain within the storm before it weakened to a depression and made landfall on Nov. 5.

The TRMM satellite flew over hurricane Vance on Nov. 4 at 0953 UTC (4:53 a.m. EST). Rainfall derived from TRMM's Microwave Imager (TMI) data collected were overlaid on a 1000 UTC (5 a.m. EST) image from NOAA's GOES-West satellite showing cloud cover and extent. The image analysis showed that Vance had a large area of heavy rainfall near the center of the hurricane. Some intense storms in that area were dropping rain at a rate of over 50mm (2 inches) per hour.


NASA/JAXA's GPM satellite data showed vertical structure of precipitation in Hurricane Vance on Nov. 3, at 0031 UTC (close to peak power) and Nov. 4 at 1101 UTC (weaker).

Image Credit: NASA/JAXA/SSAI, Hal Pierce

Vance's power peaked late on November 3, 2014 with winds of about 95 knots (about 109 mph). Vertical wind shear had started to weaken the hurricane, but Vance was still a powerful category two hurricane on the Saffir-Simpson scale with sustained wind speeds of about 90 knots (about 104 mph).

GPM, the successor to the TRMM satellite had two excellent views of Hurricane Vance on both November 3 at 0031 UTC and on Nov. 4 at 1101 UTC. GPM's Radar (Ku band), that is similar to that used on the TRMM’s satellite, was used to show vertical structure of precipitation at both times. In the first view hurricane Vance was at close to peak power with a well-defined eye. On Nov. 4, the weakening hurricane had a closing eye with much lower thunderstorm tops.

Tropical Depression Vance Makes Landfall

Increasing vertical wind shear weakened Vance from a hurricane to a depression by Nov. 5. In fact, wind shear had increased so much it was blowing at over 50 knots early in the day.

Vance made landfall in western Mexico around 10 a.m. EST today, Nov. 5. At that time, an automated weather station located in the northern part of the state of Nayarit, Mexico, reported a wind gust of 52 mph (84 kph).

On Wednesday, Nov. 5 at 10 a.m. EST (7 a.m. PST/1500 UTC) the center of Tropical Depression Vance was located near latitude 22.7 north and longitude 105.7 west about 55 miles (90 km) southeast of Mazatlan, Mexico. The depression was moving toward the northeast near 13 mph (20 kph) and is expected to continue in that direction taking Vance farther inland. The estimated minimum central pressure is 1005 millibars. Maximum sustained winds had decreased to near 30 mph (45 kph) and Vance is expected to dissipate later today or tonight.

Vance may be dissipating, but the moisture associated with the depression will continue to bring heavy rainfall southeast of its center and across portions of central and northern Mexico and the south-central United States. The ocean swells creating dangerous conditions and rip currents affecting parts of the southwestern Mexico and Baja California Sur coastlines are expected to diminish late on Nov. 5.

Forecaster Cangialosi at NOAA's National Hurricane Center (NHC) noted that by 10 a.m. EST on Nov. Vance's low-level center was becoming elongated, so the cyclone barely met the qualifications for a tropical cyclone.

The moisture that TRMM and GPM saw when Vance was a hurricane will continue to generate heavy rainfall. Even though the tropical cyclone is forecast to dissipate soon, the NHC discussion stated that moisture from the remnants of Vance and the area to its southeast should continue to spread northeastward across Mexico and into the south-central United States. This is producing heavy rains over portions of these areas, which should continue for another day or two.

Rob Gutro/Hal Pierce
SSAI/NASA's Goddard Space Flight Center

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov/content/goddard/21e-eastern-pacific/

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

'On-off switch' brings researchers a step closer to potential HIV vaccine

30.03.2017 | Health and Medicine

Penn studies find promise for innovations in liquid biopsies

30.03.2017 | Health and Medicine

An LED-based device for imaging radiation induced skin damage

30.03.2017 | Medical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>