Articles tagged with Tropical Cyclones
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.
Tropical Storm Jeruto was identified by NASA's Suomi NPP satellite on April 15, 2020, with a visible image showing elongated shape due to wind shear. Forecasters predict the storm will likely dissipate within a couple of days as vertical wind shear increases.
Cyclone Harold's transformation into an extra-tropical cyclone was captured by NASA's Terra satellite, revealing elongated clouds and convection displaced to the southeast. The system is undergoing a transition characterized by wind shear and baroclinic processes, which may retain hurricane-force winds.
Tropical Cyclone Harold generated heavy rain due to cloud top temperatures as cold as minus 80 degrees Fahrenheit, indicating strong storms. NASA's IMERG algorithm provided near-real-time precipitation estimates, helping gain a greater understanding of major storms.
NASA's IMERG satellite rainfall product reveals intense precipitation rates of over 30 millimeters per hour from Hurricane Harold's core region, resulting in significant flooding rains and strong winds.
Tropical Cyclone Harold brought heavy rains and hurricane-force winds to Vanuatu, with NASA-NOAA's Suomi NPP satellite tracking its movement towards Fiji. Forecasters expect the storm to make a brief landfall over Fiji on April 7, although intensity may remain steady or increase if an eye forms.
Tropical Cyclone Harold has caused severe flooding and property damage in Vanuatu, with NASA's GPM satellite detecting heavy rainfall rates of up to 48 mm per hour. The cyclone is now a Category 4 storm, forecasted to continue affecting Fiji later this week.
Tropical Cyclone Irondro is intensifying in the Southern Indian Ocean, with NASA's Terra satellite capturing its organized storm structure and developing cloud-filled eye. The Joint Typhoon Warning Center forecasts maximum sustained winds near 75 knots by April 4.
NASA's Suomi NPP satellite provides visible image of newly formed Tropical Cyclone Harold near Solomon Islands. The storm threatens Vanuatu, which has issued warnings for damaging gale force winds.
Tropical Cyclone Irondro shows strongest storms west of the center, with coldest cloud top temperatures as cold as minus 80 degrees Fahrenheit. NASA's satellite data indicates a high potential for heavy rain due to these strong storm systems.
Herold, a former tropical cyclone, has weakened to a low-pressure area with wispy clouds and minimal heavy rainfall. NASA's Aqua satellite provided forecasters with a visible image of the storm's center on March 20.
Tropical Cyclone Herold's strength dwindled as it moved into high wind shear and cooler sea surface temperatures. The system's low-level circulation center was partially exposed, with minimal strong convection, according to NASA's Aqua satellite imagery.
NASA's Aqua satellite gathered data on Tropical Cyclone Herold, showing wind shear weakened the storm and pushed strongest storms away from its center. The study found coldest cloud top temperatures, indicating potential for heavy rainfall.
Tropical Cyclone Herold intensified with a more defined eye in NASA satellite imagery, confirming a sharp intensification trend over the past 12 hours. The eye was visible down to the ocean's surface through clear clouds, revealing powerful bands of thunderstorms.
NASA's Aqua satellite captured a visible image of Tropical Cyclone Herold with a well-developed hurricane and powerful thunderstorms surrounding its eye. The storm is forecast to turn southeast and strengthen to 90 knots before becoming subtropical.
Tropical Cyclone 23P formed on March 14 and intensified into a tropical storm, later renamed Gretel. The storm's center was located near latitude 26.6 degrees south and longitude 169.7 degrees east, about 675 nautical miles north-northwest of Auckland, New Zealand.
Researchers analyzed giant clam shell biogeochemical records from the South China Sea and found pulsed changes matched extreme weather events. The study suggests Tridacna shells could be used to record paleoweather patterns.
Tropical Storm 22S formed near northeastern Madagascar after being observed by NASA's Terra satellite, which captured strong thunderstorms and rainfall in the western quadrant. The storm is expected to strengthen to 90 knots (104 mph) before becoming subtropical and potentially pass between Mauritius and Rodrigues.
NASA's Terra satellite provided a visible image of Ex-Tropical Cyclone 21S, which is still affecting Western Australia's Pilbara Coast with heavy rainfall and squally winds. The system is expected to bring severe weather events, including damaging wind gusts and flash flooding.
Tropical Storm 21S formed in the Southern Indian Ocean and was tracked by NASA-NOAA's Suomi NPP satellite. The storm is expected to make landfall in Western Australia as a tropical storm, with maximum sustained winds near 35 knots (40 mph/65 kph).
A new method using Nonlinear Forcing Singular Vector (NFSV) reduces model error in numerical weather forecasting models. The approach identifies the uncertainty of variable and area most likely to cause large errors, enabling adaptive satellite observations to improve short-term forecasts.
A new study estimates the monetary value of wetlands' property-protecting services, with one square kilometer valued at $1.8 million annually. Coastal counties with more wetlands experience less property damage from hurricanes and tropical storms.
US counties with more wetlands experienced significantly less property damage from hurricanes and tropical storms over a recent 20-year period. Coastal wetlands serve as natural levees, reducing property damage by up to $430 million in Florida since 1996.
NASA's GPM satellite measures heavy rainfall rates of up to 1 inch per hour for both storms, with lesser amounts falling on surrounding areas. The National Weather Service has issued warnings for strong surfs and flash floods in American Samoa.
Tropical cyclone 18P has organized into a tropical depression near American Samoa, with maximum sustained winds of 30 knots. It is forecast to intensify into a tropical storm by Feb. 22 and then dissipate due to vertical wind shear.
Tropical Storm Gabekile rapidly intensified from hurricane-force winds to weakening due to strong northwesterly wind shear, according to NASA's Aqua satellite imagery. Wind shear disrupts the storm's rotation by pushing it apart at different altitudes.
NASA's Aqua satellite captured an image of Tropical Cyclone Francisco re-developing a rounded shape with thunderstorms spiraling into its center. The storm is expected to make landfall over Madagascar and weaken as it tracks inland, dissipating on Feb. 15.
Ex-Tropical Cyclone Uesi continues to generate moderate rainfall in its southern quadrant, with the heaviest rates found south of the center. The system is expected to bring periods of heavy rain to the west and south of the South Island on Sunday and early Monday.
Wind shear, a measure of changing winds with altitude, affects Tropical Cyclone Uesi's rotation and strength. The NASA Aqua satellite revealed this impact, showing clouds being pushed to the southeast of the center of circulation.
Heavy rainfall was detected southwest of Tropical Cyclone Uesi's center by NASA's Global Precipitation Measurement mission. Rainfall rates reached up to 1.6 inches per hour in some areas, with scattered light rain falling at slower rates in other regions.
NASA's Terra satellite has detected a strengthening Tropical Cyclone Uesi, affecting New Caledonia with heavy rainfall and gusty winds. The storm is moving southwards, pulling away from Vanuatu but still generating powerful thunderstorms.
Tropical cyclones have a drying effect on the Maritime Continent, exacerbating dry seasons. Forecasting tropical cyclone activity can improve predictions for this region's circulation patterns.
GPM mission core satellite analyzed rainfall generated by ex-Tropical Cyclone Damien's remnants, showing heaviest rainfall occurring south of the center at a rate of at least 0.2 inches per hour. Heavy rainfall is forecast over the southeastern Gascoyne and adjacent Goldfields, posing a risk of flash flooding.
A new study reveals that tropical cyclones can create drying effects in the Maritime Continent due to induced zonal wind anomalies. Observational data shows that these events decrease precipitations in the region not directly affected by typhoons, highlighting their role in regional climate patterns.
Tropical Cyclone Cristina was analyzed by NASA's Aqua satellite, revealing high concentrations of water vapor and cold cloud top temperatures around the center. These conditions suggest a powerful storm with the capability to produce heavy rainfall.
Wind shear is displacing deep convection about 125 nautical miles to the southeast, causing elongation and weakening the storm. The JTWC expects Francisco will continue moving to the southeast until it dissipates.
Tropical Cyclone Damien has formed off the Pilbara coastline of Western Australia, with NASA's Terra satellite providing visible images. The storm is expected to continue intensifying as it tracks west-southwest, with severe impacts forecast for the Pilbara coast on Saturday.
Tropical Cyclone Francisco formed on Feb 5, 2020, with powerful thunderstorms and shallow banding wrapping into the center. The storm is forecast to intensify slightly before weakening over the next day and a half, moving southeastward.
Tropical Cyclone Diane formed on January 24 and quickly weakened due to wind shear, dissipating by January 27. The storm's clouds were blown southwest of the weak center, revealing its final state.
Tropical Cyclone Esami formed on January 24 and dissipated three days later due to weakening winds. NASA's Aqua satellite imagery confirmed the storm's dissipation on January 27.
Tropical Cyclone 12P formed on January 25 with peak winds at 35 knots and dissipated by January 27 under adverse conditions. NASA's Aqua satellite observed the storm's demise, revealing areas of heavy rainfall that were quickly dissipating.
Tropical Cyclone 09S formed on Jan 22 despite wind shear, but was weakened and eventually dissipated by the same force. The storm's rapid deterioration was attributed to increasing wind shear and movement into cooler waters.
Researchers develop new method to predict rapid intensification in tropical cyclones using the Synchronization Index, which measures vertical structure coherence. This index helps forecasters monitor vortex structure and understand processes influencing rapid intensification.
Tropical Cyclone Tino's intense water vapor content and low cloud top temperatures indicate a high risk of heavy rainfall and strong winds. NASA's Aqua satellite imagery provides critical data for meteorologists to track the storm's movement and potential impact on Fiji and surrounding islands.
Tropical Cyclone Claudia was dissipating in the Southern Indian Ocean when NASA's Terra satellite captured its final image. The storm's maximum sustained winds had decreased to 35 knots, and strong northeasterly wind shear had pushed clouds away from its center.
Satellite data revealed that Tropical Cyclone Claudia was weakening, with stronger storms located on the western side. Cloud top temperatures around -63 degrees Fahrenheit indicate strong storms capable of heavy rain, but are now warming due to reduced air uplift.
Tropical Storm Claudia weakened due to wind shear and dry air, with maximum sustained winds dropping to 47 mph. The storm continued to appear elongated from NASA-NOAA's Suomi NPP satellite imagery.
Tropical Storm Claudia is battling strong vertical wind shear as it moves away from Western Australia and through the Southern Indian Ocean. The storm's shape, elongated from west to east, provides forecasters with an idea of its organization and strength.
Tropical cyclone Blake made landfall in Western Australia, causing fires to rage in the southern part of the state. NASA-NOAA's Suomi NPP satellite provided an image showing the storm's center inland, with bands of thunderstorms stretching far south and red spots indicating wildfires burning.
Tropical Cyclone Blake has a high potential for creating heavy rain due to its cloud top temperatures being as cold as -81 degrees Fahrenheit. The storm is currently located north of Western Australia and is forecasted to make landfall east of Port Hedland within the next 24 hours.
NASA's Suomi NPP satellite provided a visible image of Tropical Cyclone Sarai, showing a weaker storm near Tonga. The storm is rapidly weakening and dissipating under adverse atmospheric conditions.
Tropical Storm Calvinia has moved south of the island of Mauritius in the Southern Indian Ocean, with a tropical cyclone warning class III still in effect. The storm is expected to turn southeast and strengthen to 65 knots, eventually becoming extra-tropical after January 1.
Tropical Cyclone Calvinia formed on Dec 29 and covered the island of Mauritius with bands of thunderstorms by Dec 30. The storm's organized shape indicated a high level of organization.
Tropical Storm Sarai continues to move further away from Fiji and towards Tonga, with rough surf, tropical storm force winds, and heavy rains expected for both islands. The Joint Typhoon Warning Center forecasts the storm will curve to the northeast and pass just north of Tonga and Niue over the next several days.
Phanfone is weakening due to dry air and vertical wind shear, leading to its elongation. The storm's maximum sustained winds have dropped to 50 knots, with forecasters expecting it to dissipate by Dec. 29.