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Change in IMERG early 2/5/2017-3/12/2017

During the initial setup up for V04 IMERG, an error was made in the configuration for running the EARLY version of IMERG. This affected the V04A early data from Feb 5 - March 12, 2017. This error caused the early and the late products to be identical. Given that the LATE product is the more accurate product this might not be an issue for many users. However, users who need a consistent approach in the early data will need to download IMERG early Feb 5-March 12, 2017 again. On April 12, 2017 at about 16:55 UTC Feb 5-Feb 28, 2017 files have been rerun and are available from their usual location
Texas' Heavy Rain Measured By IMERG JacobAdmin Thu, 04/13/2017
Over the past few days a slow moving frontal system moving through the Southwest produced heavy rain resulting in flooding and mudslides over central Texas. One person was reported swept away by flood water near Fort Hood Texas. NASA's Integrated Multi-satellitE Retrievals for GPM (IMERG) data were used to provide an estimate of rainfall accumulation over Texas. From April 10-12, 2017 IMERG estimates indicate that over 8 inches (203 mm) of rain fell in the area from central Texas through northern Louisiana.

GPM Catches Nor'easter over New England

Submitted by JacobAdmin on Tue, 04/11/2017
Video Embed

At the time of the Global Precipitation Measurement (GPM) Core Observatory overpass (April 1, 2017, 0550 UTC), the storm's center of low pressure was south of Long Island. At the mid-levels of the atmosphere, the circulation was centered over northeast Pennsylvania. This led to a classic overrunning, warm conveyor setup, which happened when the counterclockwise low level flow drew in cold air out of the north/northeast (hence "Nor'easter") from Canada.

GPM Catches Nor'easter over New England
At the time of the Global Precipitation Measurement (GPM) Core Observatory overpass (April 1, 2017, 0550 UTC), the storm's center of low pressure was south of Long Island. At the mid-levels of the atmosphere, the circulation was centered over northeast Pennsylvania. This led to a classic overrunning, warm conveyor setup, which happened when the counterclockwise low level flow drew in cold air out of the north/northeast (hence "Nor'easter") from Canada. Higher up, warm and moist air from further south was lifted over this cold air and resulted in precipitation in the form of snow at the surface...

GPM Observes Tropical Cyclone Forming North of Australia

The GPM Core Observatory satellite flew directly above a forming tropical cyclone in the Timor Sea northeast of Darwin, Australia on April 10, 2017 at 1146 UTC. Data collected by GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments showed that convective storms within the tropical low contained very heavy rainfall. GPM's DPR (Ku Band) data revealed that a line of intense storms west of the Bathurst and Melville islands was dropping rain at a rate of over 161 mm (6.3 inches) per hour. A 3-D examination of the forming tropical cyclone's cloud tops showed that

Deadly Flooding Rains Near Mocoa, Colombia Measured By IMERG

Late Friday night and Saturday morning flash flooding and mudslides killed over 250 people in Mocoa, Colombia. Extremely intense storms added heavy rain to water logged terrain around Mocoa. Water from this heavy rainfall converged into a river that runs close to Mocoa causing it to overflow it's banks with deadly results. Integrated Multi-satellitE Retrievals (IMERG) data were used to estimate the amount of rain that fell near Mocoa, Colombia during the seven day period from March 26 to April 2, 2017. IMERG indicates that area rainfall totals during the week were frequently greater than 80 mm
GPM Measures Tropical Cyclone Debbie
Tropical cyclone Debbie formed in the Coral Sea northeast of Australia om March 24, 2017. Debbie intensified and had hurricane force wind speeds within a day of formation. While headed toward northeastern Australia Debbie reached it's maximum sustained wind speeds estimated at over 100 kts (115 mph) on March 27, 2017 (UTC). Tropical cyclone Debbie came ashore on March 28th and brought destructive winds and extremely heavy rain to northeastern Australia. It was reported that heavy rainfall caused flash flooding that cut off a coastal town and covered several roads in Queensland. The GPM...

Tropical Cyclone Caleb's Rainfall Revealed By GPM

Tropical cyclone Caleb formed today in the South Indian Ocean southwest of the Indonesian Island of Sumatra. The GPM core observatory satellite had a fairly good view of the the newly formed tropical cyclone when it flew over on March 23, 2017 at 0756 UTC. The satellite's Microwave Imager (GMI) revealed the locations of rainfall within the tropical cyclone. Rainfall measurements derived from the GMI showed that convective storms's were dropping rain at a rate of almost 84 mm (3.3 inches) per hour on Caleb's eastern side. The Joint Typhoon Warning Center (JTWC) predicts that tropical cyclone

Peru's Deadly Rainfall Examined With NASA's GPM Data

This year unusually heavy rainfall has caused extensive flooding and loss of life in Peru. Extreme flooding and frequent landslides that occurred this month have forced many from their homes. An El Niño like condition with warm ocean waters developed near Peru's coast. This extremely warm water off Peru's western coast has been blamed for promoting the development of these storms. Equatorial sea surface temperatures (SSTs) are about average elsewhere in the central and east central Pacific. This image shows the locations of storms that were dropping heavy rainfall over northwestern Peru when

PPS Releases GPM IMERG V04 Final Data Products

PPS is announcing the release of GPM IMERG V04 Final products today, Wednesday March 22, 2017. Version 04 IMERG data is available on PPS's arthurhou ftp archive for the dates of March 2014 - July 2015. Processing will continue over the next several weeks until the data has been made available up to the present. This data can be found at: ftp://arthurhou.pps.eosdis.nasa.gov/gpmallversions/V04 Individual data orders, subsets or subscription orders can also be set up through PPS's STORM: https://storm.pps.eosdis.nasa.gov/storm/ Release notes and ATBD documentation for IMERG V04 can be found at