End of an era for Defense Meteorological Satellite Program data
End of an era for Defense Meteorological Satellite Program dataAs of July 31, the United States Navy will permanently discontinue the transmission of satellite weather data to the National Oceanic and Atmospheric Administration (NOAA). According to NOAA, this decision comes from the Fleet Numerical Meteorology and Oceanography Center, marking the end of an operational partnership that has lasted for decades.
The termination affects all data collected from the Defense Meteorological Satellite Program (DMSP), Near-Earth Space Weather instruments, and other Department of Defense space assets. These satellites, originally designed to provide twice-daily global weather imagery, have played a vital role in monitoring cloud patterns, storm systems, fog, sandstorms, and tropical cyclones, especially in remote or hard-to-reach regions.
Transition to modern satellite weather systems
The decision reflects a broader shift by the Department of Defense toward the Weather System Follow-on Microwave (WSF-M), a next-generation satellite platform that achieved Initial Operational Capacity in April 2025. Launched in 2024, WSF-M offers more precise tracking of environmental variables such as sea ice, soil moisture, snow depth, and cyclonic wind patterns. It is expected to completely replace the DMSP, which NOAA described as being more than a decade past its intended operational lifespan.
In addition to WSF-M, NOAA will also rely on the Electro-Optical Weather System (EWS) for ongoing meteorological needs. These newer systems are designed to deliver higher-resolution data and enhanced forecasting capabilities that align with modern climate observation demands.
NOAA still retains access to alternate weather imagery
Despite the loss of DMSP data, NOAA continues to receive global satellite imagery through the Joint Polar Satellite System, along with inputs from buoys, other orbiting satellites, and a network of ground-based radar stations across the United States and international regions. NOAA stressed that this change is not a loss, but a strategic transition toward greater resiliency and capability in the face of increasingly complex weather forecasting requirements.
Military modernization efforts under scrutiny
This shift occurs amid broader modernization challenges across the U.S. military’s space infrastructure. The Space Force has faced delays in overhauling its GPS systems, citing equipment deficiencies. Meanwhile, the Army is pushing forward with updates to its communications network, having recently installed new satellite systems at a teleport hub in Okinawa, expected to be operational by November.
Adding to this trend, the Department of Defense in July awarded a $28.4 million contract to L3Harris Technologies to improve the Navy’s satellite communications architecture, underscoring the strategic priority of upgrading space-based systems.
While the shift away from DMSP marks the end of a historic chapter, the adoption of WSF-M and EWS signals a commitment to innovation in monitoring environmental and atmospheric conditions with greater accuracy and resilience.
