NASA's Aqua satellite shows Rosa's remnants soaking Arizona

October 02, 2018

NASA provided an infrared view of Tropical Depression Rosa's remnants that showed strongest storms with heaviest rainfall potential were over east central Arizona on Oct. 2. The National Hurricane Center noted that although Rosa had dissipated by 11 a.m. EDT on Oct. 2, the threat of heavy rains and flash flooding continues over the Desert Southwest.

NOAA's National Weather Service Weather Prediction Center in College Park, Md. noted "Heavy tropical rain from Rosa will bring flash flood threats to the Desert Southwest and Four Corners region over the next couple of days. Flood Watches are in effect for multiple states, including California, Arizona, Nevada, Utah, Colorado and Idaho. There is also a moderate risk of excessive rain for central portions of Arizona."

Infrared satellite data captured on Tuesday, Oct. 2 at 6:05 a.m. EDT (1005 UTC the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA's Aqua satellite revealed the location of strongest storms with the coldest cloud top temperatures. MODIS found coldest cloud tops had temperatures near minus 63 degrees Fahrenheit (minus 53 degrees Celsius). NASA research has found that cloud top temperatures that cold have the capability to generate heavy rainfall.

Satellite images and surface observations indicate that Rosa has become a trough or an elongated area of low pressure with multiple swirls along its axis. Therefore, Rosa no longer qualifies as a tropical cyclone.

That heavy rainfall potential that NASA's infrared data showed are reflected in the forecast today, Oct. 2 and tomorrow, Oct. 3. In Baja California and northwestern Sonora, 3 to 6 inches are forecast with isolated 10 inches. In central and southern Arizona 2 to 4 inches are forecast with isolated 6 inch totals are possible in the mountains of central Arizona. For the rest of the Desert Southwest, Central Rockies, and Great Basin, the National Hurricane Center forecast expects between 1 to 2 inches, with isolated totals to 4 inches. These rainfall amounts may produce life-threatening flash flooding. Dangerous debris flows and landslides are also possible in mountainous terrain.

At 11 a.m. EDT (1500 UTC), the remnants of Rosa were located near latitude 29.7 degrees north and longitude 114.2 degrees west. That's about 95 miles (155 km) south-southeast of San Felipe, Mexico. The remnants are moving toward the northeast near 8 mph (13 kph), and they are expected to move over the Desert Southwest by tonight. Maximum sustained winds are near 30 mph (45 kph) with higher gusts.
-end-
For local forecasts, visit: http://www.weather.gov

NASA/Goddard Space Flight Center

Related Threat Articles from Brightsurf:

Cyber expert on 'insider threat' attacks
Dr Duncan Hodges, Senior Lecturer in Cyberspace Operations, Cranfield University, is actively researching insider threats such as the recent Twitter attack.

Climate change threat to tropical plants
Half of the world's tropical plant species may struggle to germinate by 2070 because of global warming, a new UNSW study predicts.

Knowing more about a virus threat may not satisfy you
People who rate themselves as highly knowledgeable about a new infectious disease threat could also be more likely to believe they don't know enough, a new study suggests.

Natural contaminant threat to drinking water from groundwater
Climate change and urbanisation are set to threaten groundwater drinking water quality, new research from UNSW Sydney shows.

The growing threat of tarnished plant bug
The tarnished plant bug is a profligate pest, which means it can feed on many different species, including cotton.

New approach for determining conservation threat for species with little data
University of British Columbia researchers have found a new way to identify which marine species are threatened and what is threatening them, even if these species lack data.

Social threat learning influences our decisions
Learning what is dangerous by watching a video or being told (known as social learning) has just as strong an effect on our decision-making as first-hand experience of danger, researchers at Karolinska Institutet in Sweden report.

New threat to ozone recovery
A new MIT study, published in Nature Geoscience, identifies another threat to the ozone layer's recovery: chloroform -- a colorless, sweet-smelling compound that is primarily used in the manufacturing of products such as Teflon and various refrigerants.

PPR virus poses threat to conservation
A team of conservationists from the Royal Veterinary College, WCS, Food and Agricultural Organization of the United Nations, University of Veterinary Medicine, Vienna published a letter in this week's edition of the journal Science on the threat of the virus peste des petits ruminants (PPR) to conservation.

The threat of Centaurs for the Earth
Astrophysicists from the University of Vienna, in collaboration with Elizabeth A.

Read More: Threat News and Threat 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.