TRMM

As typhoon Maysak heads toward the Philippines yet another tropical cyclone was born today in the the Pacific Ocean west of Pohnpei. The GPM core observatory satellite had a good view of tropical depression five on April 3, 2015 at 1031 UTC. GPM's Microwave Imager (GMI) found that rain was dropping at a rate of 22.4 mm (.9 inches) per hour in bands of convective storms located northwest of the center of circulation. The 3-D view from GPM's Dual-Frequency Precipitation Radar (Ku Band) shows that some of these storms were reaching heights of over 14.7 km (9.1 miles).

The GPM core observatory satellite passed above typhoon Maysak in the western Pacific Ocean on April 2, 2015 at 2343 UTC. GPM's Microwave Imager (GMI) found heavy rain in Maysak's northwestern side but the typhoon had weakened from it's peak intensity of over 130 kts (150 mph) to about 115 kts (132 kts) at the time of this satellite view. GPM's Radar (Ku Band) was used in this 3-D view to show vertical structure within typhoon Maysak. This view, looking toward the southwestern side of Maysak's eye, shows that the eye wall was eroding on that side. Vertical wind shear has contributed to typhoon

The Tropical Rainfall Measuring Mission satellite delivered a remarkable image of Super Typhoon Maysak on March 31. TRMM obtained an image straight over the top of a super typhoon with a double eye-wall, Super Typhoon Maysak, as it roared through the warm waters of the West Pacific south of Guam. This image with the TRMM Precipitation Radar or PR was taken at 14:15 UTC (10:15 a.m. EDT) on March 31, 2015 and shows the rain intensities within the very heart of Super Typhoon Maysak as it undergoes an eye wall replacement cycle. Mature, intense tropical cyclones can and often do undergo what is

The TRMM satellite has been collecting valuable scientific data since November 1997. Early today the satellite collected rainfall data from recently formed typhoon Maysak as it flew directly above on March 30, 2015 at 0414 UTC. This image shows rainfall data collected with this orbit by TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments. With sustained winds of over 85 kts (98 mph) Maysak was a category two typhoon on the Saffir-Simpson hurricane wind scale. A little over eight hours later the GPM core observatory satellite also viewed typhoon Maysak on March 30, 2015 at

Seven Tornadoes were reported yesterday in a line of violent thunderstorms extending over Oklahoma and Arkansas. One death was reported in a tornado that hit near Tulsa, Oklahoma. The TRMM satellite flew over this line of deadly storms on March 25, 2015 at 11:21 CDT ( March 26, 2015 at 0321 UTC). The first image shows a rainfall analysis that was formed from data collected by TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments at the time of this pass. TRMM PR data indicated that rain was falling at the extreme rate of over 172 mm (6.8 inches) per hour in some powerful

The GPM core observatory satellite saw dissipating cyclone Nathan when it flew over Australia's Top End on March 24, 2015 at 0256 UTC. Nathan was shown dropping light to moderate rain after being cut off from moisture flowing from the Arafura Sea and the Gulf Of Carpentaria. The Joint Typhoon Warning Center (JTWC) predicts that Nathan will continue to weaken for the next few days while traveling westward over land.

Tropical storm GLENDA formed over the open waters of the South Indian Ocean southeast of Diago Garcia on February 24, 2015. GLENDA didn't get above tropical tropical storm intensity and has not posed a significant threat to islands in the area. An interesting event occurred on February 25, 2015 when both the TRMM satellite and it's successor the GPM core observatory satellite passed over the tropical cyclone at almost the same time. This 3-D view was constructed from GPM Radar data (Ku Band) collected with the 1521 UTC pass. It shows the vertical structure of tropical storm GLENDA along the

Cyclone Nathan located in the Coral Sea off Australia's Queensland coast has made another loop and is again headed slowly toward the Cape York Peninsula. Rainfall derived from the TRMM satellite's Microwave Imager (TMI) and Precipitation Radar (PR) instruments is shown with data collected on March 18, 2015 at 0758 UTC. The heaviest rainfall was measured by TRMM PR falling at a rate of over 119 mm (4.7 inches) on the eastern side of Nathan's eye. TRMM PR data were used in this 3-D view of cyclone Nathan. Storm heights in a rain band circling Nathan's northwestern side were found reaching

As one of the strongest cyclones every recorded in the South Pacific, Cyclone Pam devastated the island archipelago of Vanuatu. As the cyclone bore down on Vanuatu's central islands on the afternoon (local time) of March 13th, Pam's maximum sustained winds were estimated to have increased to 270 kph (~167 mph) by the US Joint Typhoon Warning Center (JTWC), making it a category 5 storm on the US Saffir-Simpson scale. The storm caused immense, widespread damage with the islands of Erromango and Tanna suffering a direct hit. Although damage is still being assessed, the number of reported

TRMM/PR data distribution resumes during the experimental operation period. The satellite has descended to an altitude of around 350 km on February 12, 2015, which is the original nominal altitude before 2001. Verification of the data quality concluded and JAXA and PPS started distribution of PR data around the 350 km altitude (orbit number from 98231) to the public. PR available data period around 350 km altitude will be about 40 days since February 12, 2015. Please see TRMM/PR data distribution for further information and for the data locations.