Temporary delay of GPM NRT Data on December 7, 2020

The Precipitation Processing System is planning to migrate the jsimpson.pps.eosdis.nasa.gov (which includes jsimpsonftps.pps.eosdis.nasa.gov) to the CentOS 8 operating system. This update will mean that GPM near real-time (NRT) data will not be available to users during the period of the update. The action is planned for Monday, 7 December 2020. We intend starting at 14 UTC (09:00 EST). We hope the outage will be between 3-5 hours. During this period no GPM NRT will be available. Some data will not be produced at the usual time during this period and will be behind normal latency. No data will
IMERG Total from Cyclone Gati
On November 22, 2020, Cyclone Gati became the strongest storm to hit Somalia since satellite records began five decades ago. Gati made landfall with maximum sustained winds of 170 kilometers (105 miles) per hour, a category 2 storm on the Saffir-Simpson scale. The storm brought more than a year’s worth of rain to the region in two days. Local authorities report at least eight people were killed and thousands have been displaced. The map above shows rainfall accumulation from November 21-23, 2020. These data are remotely-sensed estimates that come from the Integrated Multi-Satellite Retrievals
IMERG Rainfall Totals from Eta & Iota, November 1 - 18
The record-breaking 2020 Atlantic hurricane season, aided by the ongoing La Niña, is officially the most active Atlantic hurricane season on record, surpassing the 2005 season in the total number of named storms with 30 to date. Incredibly, the latest storm Iota wasn’t just another named storm, but a powerful Category 5 hurricane and the strongest storm of the season. It was also only the 2 nd Category 5 storm to occur in the month of November on record, the other being in 1932. The warm waters of the Caribbean continue to serve as a breeding ground for late-season storms this season. Iota
Landslide Risk in Central America
On November 3, 2020, Hurricane Eta made landfall as one of the most powerful hurricanes to hit Central America in years. The category 4 storm destroyed hundreds of homes, killed more than 100 people, and brought torrential rains that triggered large and numerous landslides in Guatemala and Honduras. Less than two weeks later, Hurricane Iota—an even more powerful category 4 storm—nearly retraced Eta’s path. Within hours of Eta’s landfall and flooding rains, researchers at NASA’s Goddard Space Flight Center worked to predict landslides and map the storm’s aftermath. One team assessed potential

What effect do mountainous regions have on measuring precipitation? (orographic precipitation)

Wind flow up a mountain tends to enhance precipitation – when the air moves higher into the atmosphere it is cooled, which drops the saturation dew point, and therefore tends to make more moisture available.  Wind blowing down the mountain does the opposite.  If the atmosphere is sufficiently unstable, the lift provokes deep convection.  But in less convective situations, the extra moisture is squeezed out in the lowest layers of the atmosphere, mostly as the entirely liquid “warm rain process”.