NASA's Aqua satellite captured infrared data on the thunderstorms expected to bring flash flooding to parts of Arizona and other desert regions in the US Southwest. The National Weather Service warned of up to an inch of rainfall possible across Arizona, leading to potential flash flooding.
Tropical Storm Simon is expected to bring heavy rainfall and rough surf to the western United States, particularly the desert Southwest. The National Hurricane Center forecasts storm total rainfall amounts of 3-6 inches in central and northern Baja California and Sonora, Mexico, with isolated areas reaching up to 9 inches.
NASA's GOES-West satellite captured an infrared image of Tropical Storm Simon on Oct. 3, showing strong thunderstorms circling the storm's center and rainfall in western Mexico. The storm is expected to produce total rainfall amounts of 3-5 inches with isolated amounts up to 8 inches, causing flash flooding and mudslides.
A NASA animation shows Tropical Storm Simon forming over three days, strengthening into a tropical storm on Oct. 2. The storm is expected to produce 3-5 inches of rainfall with isolated amounts up to 8 inches in western Mexico.
Tropical Storm Rachel is spinning down west of Mexico's Baja California, with another tropical low pressure area, System 90E, outgrowing it. The National Hurricane Center predicts that System 90E will intensify into a tropical depression by Wednesday, Oct. 1.
The HS3 mission provided a detailed view of the storm's winds, temperature, and pressure throughout its depth. The data revealed that Eduoard was still a strong Category 2 hurricane, possibly Category 3, as it weakened over cooler Atlantic waters.
Hurricane Rachel strengthened into a hurricane on Sept. 27 but weakened back into a tropical storm by Sept. 29. NASA's Aqua satellite captured an image of the storm before it weakened, showing its organized bands of thunderstorms and cloud-filled eye.
A study analyzing millions of Arabic-language tweets confirms high levels of anti-American sentiment, revealing that criticism of the US is consistent across various regions and issues. The research suggests a deep-seated dislike of American intervention and an unwillingness to give credit when US policies are beneficial.
Tropical Depression Polo weakened significantly, with maximum sustained winds decreasing to near 35 mph, and is expected to dissipate by September 26. Swells generated by the storm will subside late on September 22, affecting the southern Baja California peninsula.
Hurricane Odile brought extreme rainfall to Mexico's Baja California peninsula and southwestern United States, with estimated totals reaching almost three feet. The TRMM satellite analyzed real-time data to track the storm's impact, revealing highest rainfall totals of over 160 mm in northwestern Texas.
Tropical Storm Polo is moving northwest towards western Mexico with maximum sustained winds of 70 mph and slow weakening expected. The storm is expected to pass south of the Baja California peninsula on Saturday, but a deviation to the north could bring stronger winds to southern Baja California.
The TRMM satellite detected heavy rainfall rates over 111 mm/h near El Paso, Texas, with thunderstorm tops reaching up to 13 km. The GOES-West infrared image showed a large area of clouds associated with the remnants over New Mexico and Texas, posing a flash flood threat for parts of the region.
Hurricane Edouard's minimum central pressure was nearly as low as when it was a category 3 hurricane. The storm is expected to weaken and become post-tropical before winding up west of the Azores in a few days.
Hurricane Polo is expected to strengthen before weakening due to northeasterly wind shear on Sept 19. The storm is currently located about 150 miles southwest of Manzanillo, Mexico, with maximum sustained winds near 75 mph.
Tropical Storm Odile is generating strong thunderstorms with heavy rainfall over northern Mexico and the southwestern US. Rainfall rates from TRMM satellite measurements reached almost 130 mm per hour northeast of the storm's center.
Hurricane Edouard's maximum sustained winds near 90 mph, with life-threatening rip current conditions expected along the US East Coast. The storm is forecast to rapidly weaken on Sept. 18, dropping in intensity to a tropical storm.
NASA's Aqua satellite detected powerful thunderstorms around Tropical Storm Polo's center, indicating strengthening conditions. Rainfall totals of 5-10 inches expected over coastal areas in Michoacan, Colima, and Jalisco states, with life-threatening flash-floods and mudslides possible.
The NASA HS3 mission is studying the changing profile of the atmosphere to learn more about how hurricanes form and strengthen. The CPL instrument provides a two-dimensional picture of cloud and aerosols, allowing scientists to discriminate between different types of particles and improve hurricane models.
Tropical Storm Polo is intensifying with strong thunderstorms and high cloud top temperatures near -63F/-53C, potentially generating heavy rain. The storm's center was located near latitude 12.8 north and longitude 99.4 west, with maximum sustained winds of 40 mph (65 kph) and a predicted strengthening into a hurricane by Thursday.
Tropical Storm Odile continues to affect the US Southwest, bringing heavy rainfall and flash flood watches. The storm is predicted to weaken and potentially become a tropical depression by early Wednesday.
Scientists are using NASA's Global Hawk aircraft and satellites to study the structure of Hurricane Edouard, including its cloud tops and aerosol content. The mission aims to understand the storm's potential for heavy rainfall and track its movement.
The HS3 mission gathered data on Hurricane Cristobal as it became an extra-tropical storm, revealing strong winds and dry air moving eastward across the western side of the storm. The data showed a shift in the strongest winds outward from the center compared to earlier stages in the storm's lifecycle.
A new statistical model complements hurricane forecasting by showing the size of storms, not just wind speed. This metric allows forecasters to better assess the risk of hurricanes that make landfall.
Hurricane Odile made landfall near Cabo San Lucas with winds of up to 110 knots, dropping rain at a rate of over 188.4 mm per hour. The storm's weakening system will continue to bring torrential rainfall and flash floods to the Baja California Peninsula.
A NASA satellite observed the remnants of Tropical Depression 16-E being drawn into Hurricane Odile. The tropical depression had lost its well-defined circulation and was moving east-northeast at 13 mph when it was absorbed by the hurricane.
NASA's Terra satellite and NOAA's GOES-East satellite captured images of Tropical Storm Edouard as it grew into a Category 2 hurricane. The storm consolidated with its bands of thunderstorms becoming more tightly wrapped around the eye, which became visible on and off during September 14.
The TRMM satellite detected powerful thunderstorms near Odile's center, dropping rain at a rate of over 196 mm/h. The combined data from TRMM and Aqua satellites showed the coldest cloud tops in storms circling Odile's center, with temperatures as low as -63F/-53C.
The Suomi NPP satellite captured high-resolution infrared images of Tropical Storm Edouard, revealing very high thunderstorms and cold cloud top temperatures. The storm is moving west-northwest at 16 mph, with forecasters predicting it may become a hurricane by September 15.
Tropical Storm Kalmaegi intensified as NASA's Aqua satellite captured its visible image approaching the Philippines. The storm is expected to strengthen over the next couple of days and potentially become a typhoon by September 13.
Tropical Depression 16E is forecasted to dissipate and be absorbed by Tropical Storm Odile due to unfavorable influence of the larger storm. The depression is currently drifting northwest at 2 mph and will eventually turn east-southeast as it gets caught up in Odile's circulation.
Tropical Depression 6 formed in the Eastern Atlantic Ocean with a well-defined circulation and organized convective banding near the center. The depression has maximum sustained winds near 35 mph and is expected to move northwest or west-northwest over the next couple of days.
NASA's Aqua satellite detected Tropical Depression 15-E on September 10, which strengthened into Tropical Storm Odile shortly after. The storm is expected to create swells and rough surf along Mexico's southwestern coast over the next day or two.
Post-tropical cyclone Norbert is weakening and losing strength, but still causing rough surf along the Baja California coast. The storm's remnants are expected to spread heavy rains and life-threatening flash flooding across northern Mexico and the southwestern United States.
The TRMM satellite calculated heavy rainfall generated by Hurricane Norbert and Tropical Storm Dolly. Rainfall totals were greater than 300 mm, affecting the open waters of the Pacific Ocean and near Mexico's western and Gulf coasts.
Hurricane Norbert's visible bands of thunderstorms spiraled into the center in NASA satellite imagery on September 4, but lost some organization due to easterly vertical wind shear. The hurricane is forecast to track parallel along the coast of Baja California for the next couple of days.
Tropical Storm Norbert is expected to bring heavy rainfall and strong winds to Mexico's west coast, with tropical storm conditions forecast for La Paz to Santa Fe by Thursday night. The storm is currently located near the southern tip of Baja California and is moving northwestward at 8 mph.
NASA's HS3 hurricane mission and Terra satellite captured detailed data on Tropical Storm Dolly before it made landfall in eastern Mexico. The data revealed Dolly's strongest thunderstorms were around its center of circulation, indicating a more organized storm than Norbert.
Hurricane Cristobal is racing through the North Atlantic, losing its tropical characteristics. The storm is expected to remain a powerful extra-tropical cyclone over the region until Sunday.
Hurricane Marie has transitioned into a post-tropical storm, losing organized deep convection and thunderstorm development. The animation from NASA's GOES Project shows the storm's structure being blown apart, with clouds and showers north of the center.
The TRMM satellite estimated rainfall totals from August 18-25, 2014, revealing heavy flooding over the Dominican Republic and Puerto Rico. The Turks and Caicos Islands received over 350mm of rainfall, with some areas experiencing totals exceeding 275mm.
Tropical Storm Marie has weakened significantly due to the presence of cooler waters, with its strongest thunderstorms located in the southern quadrant. The storm's cloud tops have warmed, indicating a decrease in its strength.
TRMM analyzed Cristobal's movement northward along the US East Coast before it began to recurve away from the coast due to an approaching shortwave trough. The storm's sustained winds were reported at 70 knots (80.5 mph) with a partial eyewall observed in infrared imagery.
Karina, a former hurricane, was being drawn into Hurricane Marie's circulation in the Eastern Pacific. The National Hurricane Center reported that Karina's maximum sustained winds were near 30 mph on August 27, centered 1,185 miles west-southwest of Mexico.
Heavy rainfall and intense convective storms were detected by NASA's TRMM satellite in Hurricane Cristobal, with some storms reaching heights of over 9.3 miles and generating heavy rain. The storm is expected to become a powerful extra-tropical cyclone over the North Atlantic by Friday.
NASA's HS3 mission investigates hurricane formation and intensity change using two unmanned Global Hawks, analyzing data on winds, temperature, pressure, and humidity. The mission aims to examine conditions that favor rapid intensification of tropical cyclones.
Hurricane Marie, over 400 miles in diameter, brings rough surf to southern California's coastline. The storm is expected to weaken and become a post-tropical cyclone as it moves northwest.
Hurricane Cristobal caused deaths in the Dominican Republic, Haiti, and Jamaica due to strong winds and flooding. The satellites provided critical data on rainfall rates and wind speeds, tracking the storm's intensification and forecasted path.
Hurricane Marie is expected to swallow Tropical Depression Karina, which is being drawn into the powerful circulation of the hurricane. Karina's maximum sustained winds have dropped to 30 mph (45 kph), weakening the depression as it moves southeast at 6 mph (9 kph).
Hurricane Marie has extended hundreds of miles from its eye, causing heavy rainfall and hurricane-force winds on nearby Socorro Island. The storm is also generating dangerous surf along the western coast of mainland Mexico.
Hurricane Marie reached Category 4 status on August 24, with maximum sustained winds of near 135 mph and a minimum central pressure of 944 millibars. The storm continued to cause dangerous surf along the west coast of Mexico, with swells affecting the southwestern coast and potentially life-threatening conditions expected.
Tropical Storm Karina weakened due to strong wind shear from Hurricane Marie, according to NASA satellite data. Karina's maximum sustained winds dropped to 40 mph on August 25 as it moved east-southeast around the western edge of Marie.
Tropical Storm Cristobal formed near the southeastern Bahamas on August 24, with NASA's Aqua satellite and NOAA's GOES-East satellites providing imagery of its birth and movement. The storm was expected to produce heavy rainfall over the Turks and Caicos Islands and parts of the southeastern and central Bahamas.
Former Hurricane Lowell has degenerated into a remnant low pressure area, with its center located near latitude 24.7 north and longitude 127.4 west, about 1,110 miles from Baja California, Mexico.
Tropical Storm Marie rapidly formed off Mexico's coast, with powerful thunderstorms stretching towards the troposphere. The storm is expected to intensify rapidly due to warm sea surface temperatures, potentially becoming a hurricane by Monday, August 25. Rapid intensification is predicted due to favorable environmental conditions.
Tropical Storm Lowell poses a threat to Baja California with strong ocean swells and life-threatening surf conditions. The storm's size and weakening trend indicate it may become a post-tropical cyclone by the weekend.
Hurricane Lowell strengthened into a Category One hurricane with sustained winds of 75 mph after being observed by NASA satellites. The storms' cloud top temperatures exceeded -63F, indicating high thunderstorms with potential heavy rainfall.
Tropical Storm Karina appeared as a giant number nine due to strong thunderstorms spiraling into its center. The storm is now weakening due to moderate-to-strong vertical wind shear and dry air affecting its development of thunderstorms.
Tropical Storm Lowell has a well-organized band of thunderstorms on its south side, which is intensifying according to satellite imagery. The storm is expected to strengthen due to favorable conditions, including low shear and high moisture.
Tropical Storm Karina is being affected by the larger circulation of Tropical Storm Lowell. As a result, it is expected to drift eastward and then northeastward with an increase in forward speed around the south and east sides of Lowell.
The 12th tropical depression of the hurricane season has formed in the Eastern Pacific, with satellite imagery showing it is significantly larger than nearby Tropical Storm Karina. The depression spans approximately 800 nautical miles in diameter, dwarfing typical sizes of around 350 miles/600 km.