GPM

Effective August 12, 2026 PPS made available NRT data from the DOD WSF-M1 MWI instrument. Both intercalibrated 1C granules and GPROF precipitation retrieval files are available to users. The WSF NRT granules are about 15 mins long. Some are shorter because of the way they are delivered to NRT. Please note that 1C granules are not the same as the DOD provided SDR product that provide the basis for the intercalibration. 1C products have fewer parameters in them than the original SDR. Only those needed for the precipitation retrieval are included. NOAA is the official distributor of the WSF SDR

This is an update to the IMERG V08 transition schedule posted on April 28, 2026, at https://gpm.nasa.gov/data/news/imerg-v08-transition-schedule. At this moment, the IMERG development team is still waiting for V08 of one of the parent products to IMERG to be finalized. Until this parent product becomes available, the team cannot assess its full impact on IMERG V08 and move towards a complete reprocessing of the record starting 1998. Therefore, at this stage, it seems more likely that IMERG V08 Final Run will be released in the fall of 2026, though this projection assumes that the parent

For the Final Run, the V07 record ends in September 2025 because the parent products feeding into the IMERG algorithm (CORRA and GPROF) are being upgraded to V08. If processing were to go beyond September, the Final record would have to use V08 inputs instead of V07 inputs. Since the IMERG V07 code is configured with the expectation of V07 inputs, this would introduce potential discontinuities in the Final record. The IMERG V08 Final Run is planned for release in the summer of 2026, though this timeline assumes that V08 of the parent products behaves within expected bounds. When this release