The GPM core observatory satellite had an extremely good view of tropical storm John on August 6, 2017 at 1:08 AM MDT (0708 UTC). The satellite passed right over John's center of circulation. GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments provided excellent coverage of precipitation associated with tropical storm John. GPM showed that the large tropical cyclone was becoming well organized and had intense rainfall within feeder bands that were spiraling toward John's center. GPM's radar (DPR Ku Band) revealed that a band of powerful storms northeast of

Tropical storm Hector was forming in the eastern Pacific Ocean southwest of Mexico when the GPM core observatory satellite passed over on July 31, 2018 at 1:40 PM PDT (2040 UTC). Hector's maximum sustained winds at that time were estimated to be about 30 kts (34.5 mph). Powerful convective storms were wrapping around the western side of the deepening tropical low's center of circulation. GPM's Dual-Frequency Precipitation Radar (DPR) instrument collected data showing that rain in some of these storms was falling at a rate of almost 198 mm (7.8 inches) per hour. The GPM satellite's radar data

A stalled weather pattern led to persistent showers and thunderstorms moving up the eastern seaboard last week, resulting in significant rainfall amounts and numerous flood warnings. A nearly stationary elongated upper-level trough of low pressure stretching down from the Great Lakes to Florida combined with a persistent Bermuda High off the coast to channel a steady flow of warm, humid air up the eastern seaboard. The result was a week of re-occurring showers and thunderstorms across the region. The Integrated Multi-satellitE Retrievals for GPM or IMERG is used to estimate precipitation from

7/27/18 Having both deepened in central pressure and broadened in precipitation shield, Jongdari is steadily intensifying as it churns towards the southern coast of Japan. In this overflight, the storm has deep convection both near the eye itself and scattered throughout its outer bands, and its maximum sustained winds are approaching 90 knots. It is expected to further intensify over the next 24 hours, reaching Category 3 status before weakening slightly prior to making landfall south of Nagoya. Jongdari will bring heavy rains and strong winds to a heavily-populated region, including the

Flood watches and warnings have been issued today for states from North Carolina through New York. Major flooding of rivers and streams is forecast in Pennsylvania as heavy rainfall continues. A Large blocking high located east of Nova Scotia and Low Pressure over the upper mid west has been funneling moisture over the Mid-Atlantic states. This weather pattern includes a strong upper level trough with it’s axis becoming oriented from the Great Lakes through the eastern Gulf Of Mexico. This resulted in a dip in the jet stream that has been transporting tremendous amounts of moisture from the