Tropical Cyclone Tuni lost its tropical characteristics and became extra-tropical as it moved southeast in the Southern Pacific Ocean. The storm's maximum sustained winds decreased from 60.4 mph to 40 mph, with heavy rain falling at a rate of over 1.4 inches per hour.
Tropical Storm Sandra is decoupling from its lower layer due to strong upper-level winds, resulting in a tight swirl of low clouds devoid of deep convection. This weakening trend is expected to produce 2-4 inches of rainfall across western Mexico, leading to life-threatening flash floods and mudslides.
Hurricane Sandra, the latest major hurricane on record in the Eastern Pacific, is forecast to make landfall in Western Mexico. It is expected to produce total rainfall accumulations of 1-3 inches over Baja California Sur, with isolated amounts reaching up to 10 inches.
Tropical Storm In-fa was becoming an extra-tropical storm as it tracked toward the island of Iwo To, Japan. The storm battled wind shear and retained hurricane-force winds, moving east-northeast at 12 knots.
Tropical Storm Sandra formed on Nov. 24 and strengthened into a late-season hurricane, with cloud top temperatures indicating powerful thunderstorms. The storm is forecast to turn northward and make landfall along Mexico's west coast by Friday, Nov. 27 or early Saturday
NASA will launch two sounding rockets, CAPER and RENU 2, over Norway this winter to study the cusp aurora and particles moving near the North Pole. The rockets will investigate electromagnetic waves accelerating electrons into Earth's atmosphere and the relationship between electron inflow and electric currents.
Tropical Storm Sandra strengthened to 35 knots with intense convective storms dropping rain at over 80 mm per hour. It is forecast to strengthen into a hurricane by Nov. 25, with a well-suited environment for intensification due to warm ocean water and light vertical wind shear.
Tropical Cyclone Annabelle was characterized by strong winds and high sea surface temperatures, but adverse conditions led to its demise. The storm's maximum sustained winds decreased to 35 knots on Nov. 24, indicating a lack of lift in the system.
Operation IceBridge collected critical data on Arctic sea ice and Antarctic glaciers, revealing significant glacier losses in the Antarctic Peninsula. The mission also provided essential measurements for calibrating satellite data and validating numerical models of ice sheet gains and losses.
The Global Precipitation Measurement mission found extreme rainfall rates of over 266 mm/h in Typhoon In-fa, driven by powerful convective thunderstorms. The satellite's Dual-Frequency Precipitation Radar instrument provided detailed insights into the storm's structure and intensity.
A new NASA study finds that the carbon content of temperate US forests is likely overestimated by 70%, due to a sampling bias in measuring tree height and biomass. Researchers used lidar technology to analyze millions of trees, providing more accurate estimates of forest carbon storage.
Tropical Storm Rick weakened into a post-tropical cyclone, with NASA's RapidScat instrument detecting strongest winds on its eastern side. The remnant low is expected to dissipate in a few days, with maximum sustained winds near 35 mph.
Tropical Storm Annabelle formed on Nov. 21 with NASA's Terra satellite capturing its development, intensified winds reaching up to 67 mph/108 kph. The storm weakened on Nov. 23 as cloud tops warmed, indicating a decrease in convection and tropospheric height.
Typhoon In-fa has become elongated to the northeast with powerful thunderstorms surrounding its cloud-filled eye. The storm is expected to weaken over the next couple of days and approach the island of Iwo To, Japan on Nov. 26.
Tropical Storm Rick is being closely monitored by NASA's Aqua satellite as it moves west-northwest towards the eastern Pacific. The storm has maintained a minimal strength of around 35 knots with surface winds confined to a small area.
Data from NASA's GPM core satellite showed Tropical Storm In-fa becoming better organized over the previous 24 hours, with rainfall rates reaching up to 55 mm/h. The storm is expected to intensify through the weekend, bringing maximum sustained winds of 115 mph.
STEREO-A has resumed its normal science operations, transmitting lower-resolution real-time data and high-definition images of the sun's surface and atmosphere with a two- to three-day delay. This allows scientists to better track solar events and make accurate models of interplanetary space weather.
Tropical Storm Rick strengthened into a tropical storm on Nov. 19, becoming the 21st of the Eastern Pacific Ocean season. The storm joined an elite group of late-season storms, with only three tropical storms forming later than this date since reliable records began in the early 1970s.
Typhoon In-fa intensified quickly from a tropical depression to a typhoon, maintaining tropical-storm force on Nov. 19. Rainfall data revealed powerful convective thunderstorms with rates over 74 mm/hour, while storm top heights reached up to 16.7 km.
Tropical Depression 21E formed southwest of Mexico's western coast on November 18. The storm is expected to strengthen and become a tropical storm by Thursday, with a turn towards the northwest.
Typhoon In-fa intensified into a typhoon near Micronesia, prompting warnings and advisories for the region. The storm is expected to continue intensifying as it moves west-northwest through Micronesia and the Marianas, bringing stronger winds and heavier showers.
Heavy flooding in southeastern India has caused at least 70 reported deaths, with Chennai experiencing exceptionally high casualties. NASA's Integrated Multi-satellite Retrievals for GPM (IMERG) data indicate rainfall totals of over 200mm in large areas of Tamil Nadu and northern Sri Lanka.
Tropical Storm 27W formed in the Marianas Islands, bringing warnings for Micronesia. The storm's center was located near latitude 4.7 degrees north and longitude 159.8 degrees east, with maximum sustained winds increasing to 40 mph.
Engineers completed two deployments for the James Webb Space Telescope's wings, a crucial step in assembling the telescope's carbon fiber framework. The telescope will hold 18 mirrors and fold up to fit inside a launch vehicle.
NASA's GPM, RapidScat, and NOAA's GOES-East satellites observed former tropical cyclone Kate in the Northern Atlantic. The system exhibited intense storms with heavy rainfall and strong winds, peaking at category one hurricane strength on November 11, 2015.
Cyclone Chapala brought over a year's worth of rain to south-central Yemen, while Cyclone Megh made landfall with much lighter rainfall totals. Despite weaker winds, Megh caused more damage and fatalities on Socatra.
Scientists have detected a monstrous new cloud of frozen compounds in the moon's low- to mid-stratosphere, peaking at an altitude of about 124 miles. This discovery provides insight into the nature and severity of Titan's winter, which is expected to be harsher than its northern counterpart.
Extra-Tropical Storm Kate rapidly intensified off the US East Coast, producing hurricane-force winds before transitioning to an extratropical cyclone. As it moves northeast, Kate's winds are expected to weaken over the next few days, eventually being absorbed by another low-pressure system.
Researchers using NASA's Fermi Gamma-ray Space Telescope discovered a new gamma-ray pulsar in the Large Magellanic Cloud, breaking records for luminosity and age. The discovery was made after reanalyzing data from the telescope's Pass 8 process.
The Visible Nulling Coronagraph (VNC) technology has demonstrated improved sensitivity over a broader spectral range, making it a stronger contender for a future astrophysics mission. The instrument will enable spectroscopy to study exoplanet atmospheres and identify signs of life.
Tropical Cyclone Megh became the second cyclone to make landfall in Yemen in one week, with NASA's Terra satellite capturing its image. The storm had maximum sustained winds near 35 knots and was centered just 15 nautical miles northeast of Aden.
Tropical Storm Kate is moving northeastward at 21 mph with maximum sustained winds near 70 mph, forecast to become a hurricane by night. The storm's center was located near latitude 30.2 North, longitude 74.7 West, 350 miles south of Cape Hatteras and 600 miles west of Bermuda.
Scientists at NASA's Goddard Space Flight Center are developing a beach ball-sized titanium occulter to study the sun's corona and predict solar flares. The mission aims to improve scientists' understanding of coronal mass ejections, which can disrupt electronics and power grids.
NASA is conducting a field campaign in the Pacific Northwest to verify rainfall and snowfall observations made by the Global Precipitation Measurement satellite mission. The region's frequent winter rain and snowfall make it an ideal location for studying precipitation patterns.
NASA scientists have found that Phobos' surface features long, shallow grooves, likely early signs of structural failure. The moon's interior may be a rubble pile with a powdery regolith layer, making it prone to stress fractures and eventual destruction.
A new study found that Mercury is being pelted by ancient comet dust, impacting its tenuous atmosphere and surface boundary exosphere. The researchers discovered a cometary dust stream from Comet Encke that explains the timing of calcium emission peaks in the planet's exosphere.
Tropical Storm Kate forms in Atlantic Ocean near Bahamas, with NASA tracking its development and movement. The storm is expected to strengthen over the next two days, bringing potential heavy rain to the region.
Tropical Cyclone Megh formed in Arabian Sea, moving west past Horn of Africa and into the Gulf of Aden. The storm is expected to make landfall in southeastern Yemen on November 10 with maximum sustained winds near 75 knots.
Tropical Cyclone Megh is intensifying as it approaches Socotra Island, Yemen, with forecasters predicting hurricane-strength winds before landfall. The storm's trajectory may be impacted by cooler waters and increasing wind shear in the Gulf of Aden.
Swift has detected over 1,000 gamma-ray bursts, providing valuable insights into extreme physical processes. The most distant GRB recorded by Swift is from over 12 billion years ago, offering new opportunities to investigate how these events are distributed across space and time.
Tropical Cyclone Chapala recently dissipated over Yemen, but another storm is now forming in the Arabian Sea. NASA's Global Precipitation Measurement mission detected this new system with scattered light to moderate rainfall falling at a rate of 23.3 mm per hour.
The Martian atmosphere is losing gas to space via stripping by the solar wind, with erosion rates increasing significantly during solar storms. Researchers have determined that almost 75% of escaping ions come from Mars' tail region.
Astronomers use Hubble Space Telescope to uncover blueprints of Milky Way's early construction phase, revealing the history of stars that existed 12 billion years ago. The study suggests the galaxy's bulge formed first and its stellar inhabitants were born quickly, with the rest of the galaxy growing more slowly.
NASA engineers have developed a new mirror technology that can take almost any shape, reducing package size and improving image quality. This 'freeform optics' technology is ideal for compact telescopes on small satellites and CubeSats.
Cyclone Chapala brought heavy rains and flooding to Yemen, with IMERG rainfall estimates showing totals of 5-15 inches in south central Yemen and coastal areas. The storm caused significant damage and loss of life, with at least 3 deaths and 200 injured reported.
Tropical Cyclone Chapala made history as the first land-falling tropical storm in 30 years of record-keeping. The storm's maximum sustained winds were near 85 mph (140 kph) before rapidly weakening to 25 knots (28.7 mph/46.3 kph).
Cyclone Chapala is approaching landfall in central Yemen, with the GPM satellite analyzing heavy rain and wind speeds of up to 120mph. The storm is expected to weaken rapidly after landfall, dissipating by November 4.
Recent studies by Michael Hippke and Daniel Angerhausen predict that upcoming missions like TESS and PLATO will uncover planetary moons, ringed worlds similar to Saturn, and large collections of asteroids. These discoveries could provide insights into alien planetary systems similar to our own.
NASA analyzed rainfall data from Tropical Cyclone Chapala in the Arabian Sea, revealing light to moderate precipitation near its center. The storm is forecast to strengthen into a Category 5 hurricane, with maximum sustained winds expected to reach 140 knots.
A new NASA study finds that Antarctic ice sheet mass gains from increased snow accumulation exceed losses from glaciers, thickening East Antarctica and West Antarctica by an average of 0.7 inches per year. This small thickening corresponds to a large gain of ice, enough to outweigh global sea level rise.