NASA analyzes developing System 90L in Straits of Florida

May 15, 2020

A low-pressure area designated as System 90L appears to be developing in the Straits of Florida, located between Southern Florida and Cuba. NASA's Aqua satellite measured cloud top temperatures within the developing system and found some stronger storms.

At 8:50 a.m. EDT on May 15, NOAA's National Hurricane Center (NHC) issued a Special Tropical Weather Outlook issued to discuss the potential for tropical or subtropical development near the northwest Bahamas.

The Outlook stated, "A trough (elongated area) of low pressure located over the Straits of Florida continues to produce disorganized shower activity and gusty winds across the Florida Keys, portions of southeast Florida, and the northwestern Bahamas. Gradual development of this system is expected, and it will likely become a tropical or subtropical storm on Saturday [May 16] when it is located near the northwestern Bahamas. Later in the weekend and early next week, the system is expected to move generally northeastward over the western Atlantic (Ocean)."

NASA's Aqua satellite provided information to NHC forecasters. One kind of data Aqua provides is infrared light to analyze the strength of storms by providing temperature information about the system's clouds. The strongest thunderstorms that reach high into the atmosphere have the coldest cloud top temperatures.

On May 15 at 3:45 a.m., EDT (0745 UTC) the Moderate Resolution Imaging Spectroradiometer or MODIS instrument that flies aboard NASA's Aqua satellite gathered infrared data on 90L. Strongest thunderstorms had cloud top temperatures as cold as minus 50 degrees Fahrenheit (minus 45.5 Celsius). As cloud tops continue to cool, they stretch higher into the troposphere. NASA research has shown that when cloud top temperatures drop to minus 70 degrees Fahrenheit (minus 56.6 degrees Celsius), storms have the ability to generate heavy rain.

The NHC Outlook stated, "Regardless of development, the disturbance will continue to bring heavy rainfall to portions of the Florida Keys, southeast Florida and the Bahamas through Saturday. Tropical storm-force wind gusts are also possible across portions of the Florida Keys, southeast Florida, and the Bahamas during the next day or so. In addition, hazardous marine conditions are expected along the Florida east coast and in the Bahamas where Gale Warnings are in effect. Dangerous surf conditions and rip currents are possible along portions of the southeast U.S. coast this weekend and early next week."

The NHC said that the formation chance through 48 hours and out through 5 days is high.

Tropical cyclones and hurricanes are the most powerful weather events on Earth. NASA's expertise in space and scientific exploration contributes to essential services provided to the American people by other federal agencies, such as hurricane weather forecasting.
-end-
For updated forecasts, visit: http://www.nhc.noaa.gov.

NASA/Goddard Space Flight Center

Related Development Articles from Brightsurf:

What jigsaw puzzles tell us about child development
New research shows that children only learn to do jigsaw puzzles once they have reached a certain stage of development.

Simulating wind farm development
Engineers have devised a model to describe how, in the process of establishing wind farms, interactions between developers and landowners affect energy production costs.

A new approach to measuring inequalities in development
A new study by researchers from IIASA and Hong Kong University of Science and Technology for the first time systematically explored and compared the use of the Human Life Indicator as a viable alternative to the conventional Human Development Index as a means of measuring progress in development.

Reconstructing the clock of human development
Researchers used iPS cells to reconstructed the human 'segmentation clock,' a key point in early embryonic development that determines how the body gets segmented.

Mother nature and child development
A world first review of the importance of nature play could transform children's play spaces, supporting investment in city and urban parks, while also delivering important opportunities for children's physical, social and emotional development.

Citizen science for sustainable development
Monitoring progress on the UN Sustainable Development Goals requires a huge amount of data.

A molecular 'atlas' of animal development
Scientists have studied the nematode worm Caenorhabditis elegans for decades, making essential contributions to basic science.

Novel paradigm in drug development
Targeted protein degradation (TPD) is a new paradigm in drug discovery that could lead to the development of new medicines to treat diseases such as cancer more effectively.

Turbo chip for drug development
In spite of increasing demand, the number of newly developed drugs decreased continuously in the past decades.

New knowledge on the development of asthma
Researchers at Karolinska Institutet in Sweden have studied which genes are expressed in overactive immune cells in mice with asthma-like inflammation of the airways.

Read More: Development News and Development Current Events
Brightsurf.com 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 Amazon.com.