WSF-M2 & BLAZE-2 (USSF-178)
Falcon 9 Block 5, SpaceX
Space Launch Complex 4E, Vandenberg SFB, CA, USA
Launch time
No earlier than
NET Q1 2027
Current date is a placeholder or rough estimation based on unreliable or interpreted sources.
How sure is this date?
The source gives quarter 1 precision. Launch plans can change.
Source updated
UpdatedSlip history
No changes since we started tracking on .
- LL2 update
NET early 2027.
Read the source update - LL2 update
NET 2028.
Read the source update - LL2 update
Added launch.
Read the source update
Mission
WSF-M2 & BLAZE-2 (USSF-178) on Falcon 9 Block 5 from Space Launch Complex 4E. Launch time, status and recorded date changes from Launch Library 2.
Second Weather System Follow-on (WSF) satellite. WSF-M (Weather System Follow-on - Microwave) is the next-generation operational environmental satellite system for the Department of Defense (DoD), to replace the microwave wavelength weather forecasting capabilities of the DMSP satellites. Ball Aerospace has been selected in late November 2017 to be the prime contractor for 2 Low Earth Orbit (LEO) weather satellites with a passive microwave imaging radiometer instrument and hosted Government furnished energetic charged particle (ECP) sensor space weather payload developed by the Air Force Research Laboratory. The radiometer leverages the Ball-built Global Precipitation Measurement (GPM) Microwave Imager (GMI) instrument. This mission will improve weather forecasting over maritime regions by taking global measurements of the atmosphere and ocean surface. The launch will also include BLAZE-2, a launch opportunity for operational, research, development, and prototype small satellites from across the DoD.
- Mission type
- Earth Science
- Orbit
- Polar Orbit

Launch timeline
No timeline has been provided by the source.
Launch pad
Space Launch Complex 4E
Vandenberg SFB, CA, USA (US)
Coordinates: 34.632, -120.611
View launch pad on a map