Articles tagged with Tropical Cyclones
Researchers found that true forecast track error increases exponentially with lead time, implying dynamics of TC motions are linear and model-induced errors in TC position forecasts are minimal. The team's 4-parameter error model indicates potential extension of predictability limit beyond 6/8 days in 10/30 years' time.
Tropical cyclones affected by wind shear can appear less than round, with outside winds pushing clouds and rain to one side. Infrared data reveals cold cloud top temperatures indicating heavy rain potential
Tropical Storm Paulette's cloud top temperatures were as cold as minus 63 degrees Fahrenheit, indicating strong storms capable of creating heavy rain. The storm was weakened by wind shear, but forecast to re-strengthen over the weekend and potentially become a hurricane.
NASA infrared data shows tropical cyclone Paulette experiencing strong wind shear, pushing clouds away from its center. This phenomenon can weaken the storm and indicate potential for heavy rainfall.
Tropical Storm Rene weakened to a tropical depression on Sept. 8 but regained strength, with NASA's Aqua satellite capturing its seesaw-like pattern of strengthening and weakening storms. The strongest storms had cloud top temperatures as cold as minus 80 degrees Fahrenheit, indicating potential for heavy rainfall.
Tropical Storm Rene, formed on September 7 in the North Atlantic, brought strong winds and heavy rain to Cabo Verde Islands. The storm's center was located near latitude 16.5 degrees north and longitude 26.5 degrees west, with maximum sustained winds of 40 mph.
Typhoon Haishen made landfall in South Korea, bringing heavy rain, storm surge, and landslides. NASA's Aqua satellite captured infrared data showing the storm's temperature and rainfall potential, helping forecasters predict its path.
Maysak made landfall on Sept 2 at 12 miles west of Busan, South Korea, with maximum sustained surface winds of 64 knots. The storm underwent extra-tropical transition, gaining frontal characteristics, and is forecast to deepen as a low-pressure area over North Korea and China.
Tropical Depression 15 formed over the Atlantic Ocean, east of North Carolina, and has been battling wind shear. The depression is currently 140 miles east-southeast of Cape Hatteras, moving toward the east-northeast at 14 mph.
Researchers found significant correlations between stationary wave strength and tropical cyclone activity, with strong waves modulating TC frequency and altering atmospheric conditions. The study's hemispheric perspective on TC variability offers insights into improving future projections of TC activity in a warming climate.
Tropical cyclones are composed of hundreds of thunderstorms, and NASA's Infrared Data Reveals Where the Strongest Storms Are Located. The strongest storms have coldest cloud top temperatures, with some reaching minus 80 degrees Fahrenheit near Iselle's center.
Tropical Storm Hernan forms in the Eastern Pacific, moving towards Mexico's coast. NASA's nighttime view reveals a sheared tropical cyclone with potential for heavy rainfall due to cold cloud tops.
Tropical Storm Bavi made landfall in northwestern North Korea, weakened to a tropical storm with maximum sustained winds near 40 knots. The storm has transitioned to an extra-tropical cyclone, retaining hurricane-force winds as it moves across northeastern China.
Tropical Storm Iselle formed on Aug 26 with enhanced infrared data showing strongest storms west of the center, indicating large amounts of rain. Wind shear will likely prevent strengthening over the next couple of days, and forecasts predict weakening late this weekend.
NASA's Terra satellite observed the remnants of Tropical Depression 10E, providing water vapor content data that sheds light on the storm's potential to develop. The analysis revealed a small area of coldest cloud top temperature, indicating the storm's strength and temperature.
NASA's Terra satellite captured a visible image of Post-tropical Storm Kyle on Aug. 16, revealing an elongated circulation and ill-defined center. The storm had become an extratropical low-pressure area attached to warm and cold fronts, leading to its dissipation by Aug. 17.
Tropical Depression 10E is struggling to intensify due to strong northeasterly wind shear, according to NASA's Suomi NPP satellite imagery. The depression has maintained a small ragged band of convection in its southwest quadrant despite the adverse conditions.
Tropical Storm Josephine is being affected by southwesterly wind shear, which is pushing clouds and precipitation to the northeast of its center. This wind shear is expected to continue, potentially affecting the storm's trajectory and weakening it over the next couple of days.
Elida has been downgraded to a post-tropical cyclone due to the absence of strong thunderstorms. The National Hurricane Center notes that without warm sea surface temperatures, organized deep convection will not return, making this the final advisory on Elida.
Tropical Storm Jangmi transitioned into an extra-tropical storm on Aug. 11, located near latitude 26.9 degrees north and longitude 130.4 degrees east, about 139 miles northeast of Chinhae, South Korea. The storm had maximum sustained winds of 35 knots (40 mph) and was speeding to the north-northeast.
Tropical Depression 06W is being weakened by vertical wind shear and dry air, with maximum sustained winds near 25 knots (29 mph/46 kph). The storm formed two days ago near latitude 26.1 degrees north and longitude 147.6 east.
Typhoon Mekkhala made landfall in Fujian, southeastern China, generating at least 170 mm of rainfall. The storm's maximum sustained winds were near 70 knots (81 mph) at landfall.
Hurricane Elida intensified into a Category 2 hurricane, with maximum sustained winds reaching 100 mph and an eye apparent on night-time imagery. The storm is expected to weaken rapidly over colder water, degenerating to a remnant low pressure area by Thursday.
NASA's Terra satellite detected powerful thunderstorms around Tropical Storm Mekkhala's center, with temperatures as cold as -80 degrees Fahrenheit. The storm is expected to move north before making landfall in southern China, bringing potential heavy rainfall.
A new study by University of Iowa researchers identifies a connection between the East Asian Subtropical Jet Stream and the frequency of tropical storms in the Atlantic Ocean. The study found that stronger EASJ is associated with fewer Atlantic tropical cyclones, suggesting a link between climate systems in Asia and hurricane formation.
NASA's Aqua satellite detected remnants of tropical storm Douglas, weakened by strong wind shear, as it crossed the International Date Line in the Pacific Ocean. The post-tropical low-pressure area is expected to dissipate shortly after crossing the dateline.
A Potential Tropical Cyclone (PTC) 9 has developed in the Eastern Caribbean Sea, bringing heavy rainfall and gusty winds to several islands. The National Hurricane Center has issued multiple warnings and watches, with a high formation chance of 90%.
Tropical Storm Douglas has weakened significantly due to strong wind shear, which has pushed the storm's clouds away from its center. The lack of deep convection in the storm is a clear indication of weakening.
Tropical Storm Gonzalo has broken a record as the earliest seventh named storm on record in the Atlantic basin. Cloud top temperatures captured by NASA's Aqua satellite indicate strong storms with high rainfall potential.
Tropical Depression 7E is weakening due to wind shear and cool ocean waters. The storm has lost all deep convection, with only a small patch of clouds remaining.
A study by Hong Kong Baptist University found that slow-moving tropical cyclones bring about 20% more rainfall, resulting in increased flood risks in the region. The research also identified a correlation between slower moving speeds and higher rainfall volumes.
Tropical Depression 06E has opened up into a trough with minimal concentrations of water vapor detected by NASA's Aqua satellite. The system is dissipating due to the loss of closed circulation and interaction with cooler waters.
Tropical cyclones use warm air as fuel to form and strengthen. Cloud top temperatures provide information about the strongest storms within a tropical cyclone, which can indicate heavy rain and potential hurricane formation.
NASA-NOAA's Suomi NPP satellite captured post-tropical cyclone Edouard transitioning into the western North Atlantic. The system was classified as extratropical due to its merged center of circulation with a frontal boundary.
Tropical Cyclone Boris weakened to a remnant low-pressure area over the Central Pacific Ocean, dissipating by June 30. The NASA-NOAA satellite animation provided an image of the storm's progression from June 26 to June 29.
Post-Tropical Cyclone Dolly weakened further as it moved northeastward, losing tropical characteristics. The storm's strongest thunderstorms were displaced to the south of the center, and it is forecast to dissipate by Thursday morning.
Tropical Storm Dolly formed over the Northern Atlantic Ocean after transitioning from a subtropical depression. NASA's Terra satellite captured an image of the storm on June 23, revealing strong winds and a thick band of thunderstorms. The National Hurricane Center predicts Dolly will weaken and become post-tropical by Wednesday.
Subtropical Depression 4 formed over the North Atlantic Ocean on June 22, with cold cloud top temperatures indicating strong storms. The depression is expected to weaken and transition into a post-tropical cyclone by Wednesday.
Researchers found that extreme rainfall events from STCs can occur over inland areas far from coastlines due to amplification of local terrain and large-scale forcing. The study suggests further investigation into asymmetrical distribution of STP, differences between STP and landfalling precipitation, and comparisons with other datasets.
Researchers analyzed tropical cyclone speed and daily precipitation in China from 1961 to 2017, identifying a slowdown of 10-11% over the coast. This resulted in increased flood risks as slower cyclones increased passage time and total local rainfall.
Tropical Depression Nuri formed after passing over Luzon, Philippines and moved into the South China Sea. The storm is forecast to make landfall southwest of Hong Kong, China on June 14 with maximum sustained winds of 30 knots.
Cristobal has the potential to generate heavy rainfall, with NASA's AIRS instrument revealing cold cloud top temperatures indicating strong storms. The storm is expected to produce extreme rainfall amounts through the end of the week, causing life-threatening flash floods and mudslides in affected areas.
NASA's Terra satellite captured visible images of Nisarga's remnant clouds over central India. The storm weakened from hurricane force to a depression and eventually into a low-pressure area, bringing light to moderate rainfall to the region.
Tropical Cyclone Nisarga strengthened significantly before making landfall in west central India, according to NASA infrared data. The storm intensified from 40 knots to hurricane strength within 12 hours, with cloud top temperatures reaching as cold as minus 63 degrees Fahrenheit.
Tropical Depression 03L is expected to generate heavy rainfall in Mexico's Yucatan Peninsula. NASA's Aqua satellite detected coldest cloud top temperatures as cold as minus 80 degrees Fahrenheit, indicating strong storms in the region.
Intensifying tropical cyclones strengthen ocean eddies feeding the Kuroshio Current, accelerating it and transferring more heat energy to mid- and high-latitude ocean waters. This phenomenon highlights a positive feedback loop between TCs and climate warming, potentially impacting future climate predictions.
NASA analyzed rainfall generated by post-tropical cyclone Bertha, which brought heavy rain to the Carolinas and Midwest. The GPM core satellite measured rainfall rates of up to 1 inch per hour in south central West Virginia, prompting flash flood watches for several states.
Mangga transitioned to an extra-tropical storm, losing tropical characteristics and retaining hurricane-force winds. The system brought damaging winds and high tides to Western Australia.
NASA satellites provided critical imagery of Typhoon Amphan as it approached a landfall in northeastern India. The storm's cloud top temperatures indicated strong storms with potential for heavy rainfall.
Tropical Cyclone Amphan has weakened and its eye is covered by high clouds, according to NASA-NOAA's Suomi NPP satellite imagery. The storm is forecast to make landfall near Kolkata on May 20, bringing powerful storms with heavy rainfall potential.
Tropical Storm Arthur experienced heavy rainfall rates of over 25mm per hour near its northeastern side, with lighter rates throughout the rest of the storm. Forecasters incorporated this data into their forecasts, noting potential impacts on swells and life-threatening surf conditions in the mid-Atlantic and southeast US coasts.
Tropical cyclones have increased in intensity over the past four decades, with wind speeds of at least 100 knots rising by approximately 15% between early and latter halves of record. The increase corresponds to a statistically significant rate of 8% per decade, consistent with physical theory and numerical simulations.
The NASA Aqua satellite revealed a unique feature of Cyclone Amphan: high concentrations of water vapor surrounding the storm's eye. This characteristic can lead to intense rainfall and stronger storms. The satellite data showed coldest cloud top temperatures as low as minus 70 degrees Fahrenheit.
Typhoon Vongfong made landfall in the Philippines on May 14, 2020, as a typhoon. The storm weakened into a tropical storm by May 15, with maximum sustained winds of 60 knots (69 mph/111 kph).
NASA-NOAA satellites track Typhoon Vongfong's landfall in the Philippines, revealing signs of a mature tropical system. The storm is weakening as it moves northward over Visayas and Luzon regions.
Researchers at Florida State University have found that even minor changes in atmospheric conditions can lead to the development of hurricanes. The study used numerical models to simulate cloud formation and found that most simulations produced major hurricanes in a range of latitudes, including areas near the equator.
Tropical Storm Vongfong is consolidating and organizing into a tropical cyclone, with higher cloud top temperatures indicating stronger storm conditions. The storm is expected to strengthen over the Philippines archipelago, bringing scattered to heavy rain showers and strong winds.
Researchers found that cyclone frequency decreased in the southern Indian Ocean and western North Pacific but increased in the North Atlantic and central Pacific. The study suggests that climate change is driving these changes.
New research reveals climate change impacts on tropical cyclone patterns, with rising activity in the North Atlantic and Central Pacific, while declining in other regions. Greenhouse gases, aerosols, and volcanic eruptions contribute to these changes.
Tropical Depression 1E formed in the Eastern Pacific Ocean on April 25 and reached its peak with maximum sustained winds near 35 mph. The system weakened as it encountered dry air and cooler sea-surface temperatures, eventually becoming a post-tropical remnant low.