SSMIS Outage Affecting TMPA and IMERG

FNMOC is behind in providing the SSMIS data used in IMERG. Therefore, the Early and possibly Late IMERG products will contain less satellite estimates and be of somewhat lesser quality. FNMOC stopped providing data around 00 UTC today (8 September 2016), meaning there has been no data available from the three operational SSMIS sensors to the TMPA-RT datasets. As a result, more lower-quality IR-based estimates are being used. In addition, if there are dropouts in the IR data, there is a higher probability that gaps will appear in the combined product, 3B42RT. We will update the situation when
Document Description

A table comparing the older TRMM Multi-satellite Preciptiation Analysis (TMPA) datasets with the new Integrated Multi-satellitE Retrievals for GPM (IMERG) datasets. 

Deadly Flooding Gulf Coast Rainfall Measured By NASA's IMERG

An extremely severe rainfall event hit the states of Louisiana and southern Mississippi when a very slow moving low pressure system continuously pulled tropical moisture from the Gulf Of Mexico. Measurements by the GPM core observatory satellite showed that rainfall intensity within the low pressure system actually increased on August 12, 2016 as the low settled over southeastern Louisiana. At least 4 people have died in record flooding after the unusually heavy rainfall starting falling last week. More than 27 inches (686 mm) of rain have been reported in the area. This is the second time

Extreme Rainfall Along the Gulf Coast Measured by IMERG

For the better part of a week, a persistent, mid-level area of low pressure has been tapping into warm, moist air to produce stormy weather in the northeastern Gulf Of Mexico. The National Hurricane Center (NHC) monitored this stormy area for possible development but unfavorable upper-level winds and the close proximity to land prevented development into a tropical system. However, during the past week from as much as 4 to over 15 inches (254-381 mm) of rain fell along the Gulf Coast from Tampa northward through the Big Bend to as far west as central Louisiana. So far the highest rainfall

Deadly Hurricane Earl's Rainfall Measured With IMERG

Hurricane Earl began as a tropical wave that was tracked by the National Hurricane Surface (NHC) from the African Coast to the Caribbean Sea. The tropical wave drenched the Dominican Republic where it was blamed for the deaths of six people. Southwest of Jamaica on August 2, 2016 the tropical wave developed a closed circulation and Earl was upgraded to a tropical storm. On Wednesday August 3, 2016 Earl became a hurricane when it was located about 150 miles east of Belize. On Thursday Earl made landfall just southwest of Belize City, Belize at about 0600 UTC (2 AM EDT). At landfall Earl had

IMERG Shows Darby's Rainfall Over The Hawaiian Islands

Most of the Hawaiian Islands were spared serious damage from tropical storm Darby. The location of Darby's track through the Hawaiian Islands resulted in the islands of Hawaii and Oahu being the most affected. Flash flooding was common on Oahu due to a reported 177.8 mm (7 inches) of rain drenching the island. Interstate H-1 was flooded in some locations. Lightning damage was reported in Kaneohe on the windward side of Oahu. Estimates of rainfall accompanying tropical storm Darby were produced using NASA's Integrated Multi-satellitE Retrievals for GPM (IMERG) data. These IMERG rainfall

Nepartak Causes Havoc Then Dissipates Over China

Nepartak was a powerful category four typhoon when it hit Taiwan last week but weakened to a tropical storm as it moved into the Taiwan Strait. Nepartak's winds and heavy rains caused severe problems when it moved ashore over southeastern China. Thousands of homes in China were destroyed by the storm. At least three deaths in Taiwan and six fatalities in China were attributed to Nepartak. Torrential rain caused flash flooding and mudslides in both Taiwan and China. NASA's Integrated Multi-satellitE Retrievals for GPM (IMERG) were again used to estimate the total amount of rain that Nepartak
As farmers in Nepal prepare for the benefits of monsoon season, Dalia Kirschbaum anticipates the dangers of those torrential rains—mainly, the loosening of earth on steep slopes that can lead to landslides. In this mountainous country, 60 to 80 percent of the annual precipitation falls during the monsoon (roughly June to August). That’s when roughly 90 percent of Nepal’s landslide fatalities also occur, according to a 2015 report from the United Nations Office for the Coordination of Humanitarian Affairs. “We know a high number of landslides occur around this time, so documenting them is...

IMERG Sees Onset Of Possibly Wetter India Monsoon

On June 8 the nodal weather agency of India (IMD) declared the arrival of the 2016 Southwest Monsoon over the Indian state of Kerala. This season is expected to be rainier than recent years. The El Nino conditions which have been blamed for recent disappointing monsoons has weakened to ENSO-neutral conditions. ENSO-neutral conditions are expected to transition to La Nina in the northern hemisphere by the fall and winter of 2016-17. La Nina conditions normally result in beneficial wetter and cooler monsoons in India. An animation of weekly rainfall totals was derived from NASA's Integrated

GPM IMERG Sees Flooding in France

In June 2016, a slow-moving weather system unleashed several days of heavy downpours on western Europe, pushing the Seine River to heights not seen in 34 years. With the Seine’s water levels 6.1 meters (20 feet) above normal in Paris, flood waters knocked out electricity for thousands of people, interrupted road and rail traffic, shut down schools, and caused an estimated 1 billion euros of damage. During the worst of the flooding, the world’s most visited museum, the Louvre, closed as employees scrambled to move artwork out of basement areas that were at risk of flooding. The map above