Tropical Cyclones

While the GPM Core Observatory’s instruments show exceptional detail in Milton’s rainfall structure in several overpasses throughout the week, the IMERG global multi-satellite product provides a broader overview of precipitation along Milton’s track as a continuous picture from development through landfall. Download this video (right-click -> "save as") The above animation shows IMERG precipitation rates (in blue/yellow shading) and accumulations (in green/purple shading) from Oct. 5-10, 2024. Cloudiness is shown in shades of white/gray using infrared geosynchronous satellite data. While

Updated Oct. 10, 2024 Click here for a visualization of IMERG precipitations and totals from Hurricane Milton. After forming in the Bay of Campeche, Hurricane Milton underwent a remarkable period of rapid intensification with its central pressure falling from 1007 mb (29.74 inches of mercury, inHg) at 11:00 a.m. EDT Oct. 5 to 897 mb (26.49 inHg) at 8:00 p.m. EDT on Oct. 7. At this time Milton became the fifth most intense hurricane in the Atlantic Basin on record in terms of central pressure, just behind Hurricane Rita (2005) on that list, and only the sixth storm in the Atlantic to have a

After tracking through the eastern Gulf of Mexico and battering much of the west coast of Florida with strong winds and storm surge, Hurricane Helene made landfall in the Big Bend region of Florida’s northwest coast at 11:10 pm EDT about 10 miles west-southwest of Perry, Florida, as a powerful Category 4 hurricane with maximum sustained winds reported at 140 mph by the National Hurricane Center (NHC). Hurricane Idalia, a strong Category 3 storm at the time, also made landfall in the Big Bend last year. Animation of NASA IMERG precipitation rates and totals from Hurricane Helene from Sept. 23 -

[ Goto Spanish translation; Ir a la traducción al español] On Monday evening, Sept. 23, 2024, an unusual hurricane struck southern Mexico, dumping 20 inches of rainfall along the coast according to estimates from NASA's IMERG precipitation product. The following image shows these rainfall estimates: Click here for a full resolution version of this image. Observations from an international constellation of satellites were the starting point for calculating these estimates, and the data confirm that forecasters in prior days were right to warn of possible heavy rainfall. Forecasters did have

Updated: Wednesday, September 18, 2024 Hurricane Francine made landfall on Wednesday, September 11, at 5:00 p.m. CDT on the southern coast of Louisiana, approximately 30 miles south-southwest of Morgan City. The National Hurricane Center (NHC) classified it as a Category 2 storm, with maximum sustained winds estimated at 100 mph. Francine originated from a westward-moving tropical wave of low pressure, known as an African easterly wave. This wave, as is typical, emerged off the west coast of Africa before traversing the tropical Atlantic and Caribbean. These waves often serve as seedlings for

The joint NASA / JAXA Global Precipitation Measurement (GPM) mission has been tracking rain and snow around the globe for over 10 years, providing valuable insights into Earth's weather and climate. Now in its tenth year of operation, we look at ten events brought to light by this groundbreaking mission.

On the morning of Sunday, June 30, Hurricane Beryl became a rare early season major hurricane when it reached Category 3 status with sustained winds of 115 mph as it was moving across the Atlantic 420 miles east-southeast of Barbados in the direction of the Leeward Islands. Then, just a few hours later at 11:35 a.m. EDT, Beryl became the earliest Category 4 hurricane on record in the Atlantic with sustained winds reported at 130 mph by the National Hurricane Center (NHC), surpassing Hurricane Dennis from the epic 2005 Atlantic hurricane season. Beryl also became historic as the strongest and

In mid-December 2023, the far north region of Australia’s Queensland state experienced heavy precipitation and flooding as a result of Tropical Cyclone Jasper, which made landfall on December 13 north of the town of Port Douglas. The Joint Typhoon Warning Center began issuing bulletins on Jasper on December 5 as it developed into a tropical depression over the Western South Pacific Ocean. By December 7, Jasper had strengthened to a Category 4-equivalent cyclone on the Saffir-Simpson scale as it tracked southwestward. By the time it made landfall on December 13, Jasper’s winds had weakened back

After rapidly intensifying overnight, Hurricane Otis made landfall near Acapulco, Mexico around 1:25 a.m. CDT (06:25 UTC) on Wednesday Oct. 25 as a powerful Category 5 hurricane. Otis had maximum sustained winds estimated at 165 mph by the National Hurricane Center (NHC), making it the first Category 5 as well as the most powerful storm to hit the Pacific coast of Mexico on record. Otis formed into a tropical depression (TD 18-E) on the morning of Sunday Oct. 22 about 530 miles (850 km) south-southeast of Acapulco from a broad area of low pressure. The depression was moving slowly northward

Typhoon Bolaven began as a tropical depression over the West Pacific Ocean on Oct. 7, 2023. On Oct. 10, Bolaven became a Typhoon and passed over the Mariana Islands as it tracked to the northwest. Bolaven then rapidly intensified over 12 hours from a Category 1 to a Category 5 storm on the Saffir-Simpson scale, starting around 12 UTC on Oct. 10. Several factors contributed to the rapid intensification, including modest shear in the atmosphere and warm sea-surface temperatures. This animation shows precipitation within Typhoon Bolaven around the time that rapid intensification began. The global