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GPM 10-in-10 Webinar Series Banner showing a placid lake with many birds on it.
April 11, 2024, 8 p.m. ET Register Here Overview With Earth Day coming up on April 22, we would like to share the many ways in which NASA and its partners help us to better understand and protect Earth. Join us on April 11 from 8 to 9 p.m. ET for an informative webinar. Guest speakers include Dr. Dalia Kirschbaum, Amy Chen, Liz Saccoccia, Matt Pearce, and Dorian Janney Speakers Liz Saccoccia Liz Saccoccia is a Water Security Associate on the World Resources Institute’s Water Team. She works with governments, companies, and research partners to advance best practices in water resources
Screenshot of the IMERG animation showing rainfall totals from the atmospheric river in Jan. and Feb. 2024.
A pair of powerful atmospheric river events brought heavy precipitation across much of coastal California this week, resulting in record rainfall totals, extensive flooding, numerous landslides, hurricane-force winds, and power outages. These types of atmospheric river events that impact the U.S. West Coast are also known as the “Pineapple Express” due to their transport of moisture up from the Tropics originating around Hawaii. The first event had the greatest impact on northern and central California. It was initiated when a large low-pressure trough located in the northeast Pacific
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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
GPM Overpass of Hurricane Otis
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
GPM Overpass of Cyclone Bolaven
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
Map of IMERG precipitation estimates from recent flooding rainfall in Greece.
On Sept. 4, 2023, a low-pressure system developed over southeastern Europe that would lead to devastating floods over Greece and other parts of the region. The system was given the name “Daniel” by local meteorological agencies. Daniel was dynamically driven by strong cyclonic flow in the upper-level winds over southeastern Europe. The upper-levels winds combined with low-level winds from the northeast which supplied moisture from the unusually warm waters of the Aegean and Black Seas to central Greece. According to satellite infrared and microwave estimates from NASA's MUR and NOAA’s OISST v2
GPM Overpass of Hurricane Idalia
After threatening much of Florida’s western coast, Hurricane Idalia made landfall Wednesday morning in the Big Bend region of Florida’s northwest coast near Keaton Beach at 7:45 a.m. EDT, Aug. 30, as a strong Category 3 storm with sustained winds reported at 125 mph by the National Hurricane Center. Idalia’s formation was somewhat unusual. Typically, when entering the heart of the hurricane season tropical storms and hurricanes form and expand eastward across the tropical Atlantic region towards Africa’s coast. However, storms occasionally still form in the western Caribbean, as was the case
GPM Overpass of Tropical Storm Franklin on Aug. 29 2023
After becoming a tropical storm in the east-central Caribbean on the afternoon of Aug. 20 and moving generally westward for two days, Tropical Storm Franklin took a northward track and struck the southern coast of the Dominican Republic south of Barahona on the morning of Aug. 23 as a moderate tropical storm with sustained winds reported at 50 mph by the National Hurricane Center (NHC). Franklin brought heavy rains and flooding to the area, resulting in landslides, power outages and at least 2 fatalities in the Dominican Republic according to media reports . After traversing the mountainous
IMERG rainfall totals from Hurricane Hilary.
Hurricane Hilary is being hailed as a historic storm after becoming the first tropical storm to hit California since Sept. 24, 1939. The storm has had a large impact on the region - in addition to gusty winds, Hilary’s rains have resulted in widespread flooding, landslides, washed out roads and numerous other closures. Like most East Pacific tropical cyclones, Hilary originated from a westward propagating tropical wave that crossed over Central America from the western Caribbean into the eastern Pacific. Known as “African easterly waves”, these are the same waves that emerge off the coast of
GPM Overpass of Typhoon Khanun
The Northwest Pacific typhoon season has been quite active recently. Following in the wake of Super Typhoon Doksuri, which skirted the northern tip of Luzon July 25 and 26 and continued on to bring extreme rainfall to southeast coast of China, is yet another powerful storm - Typhoon Khanun. Khanun (known as “Falcon” in the Philippines) began in the West Pacific Ocean as an area of disturbed weather on July 24 situated well south of Guam and east of Palau. Over the next several days the system slowly intensified as it tracked northwestward towards the Ryuku Islands of southern Japan, becoming a

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