NET early 2027.
Update ↗
WSF-M2 & BLAZE-2 (USSF-178)
Falcon 9 Block 5
Has a launch date been confirmed?
A confirmed launch date has not been published in this record. Placeholder dates are not launch appointments.
Source record updated . This is a source update, not a confirmed launch time.
Check the source: Launch Library ↗
Checks for schedule changes while this page is visible.
Target time, not a confirmed liftoff.
Mission
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.
- Launch vehicle
- Falcon 9 Block 5
- Mission type
- Earth Science
- Destination orbit
- Polar Orbit
- Launch pad
- Space Launch Complex 4E
- Provider
- SpaceX
The vehicle
Published configuration and flight history.

Falcon 9 Block 5
Falcon 9 is a two-stage rocket designed and manufactured by SpaceX for the reliable and safe transport of satellites and the Dragon spacecraft into orbit. The Block 5 variant is the fifth major interval aimed at improving upon the ability for rapid reusability.
- Height
- 70 m
- Diameter
- 3.65 m
- Stages
- 2
- Recorded launches
- 626
- First flight
- 2018-05-11

Unknown F9
Launch window
A calendar entry will be available when a date is confirmed.
A precise launch window has not been published.
Launch site & orbit
Vandenberg SFB, CA, USA
Launch site & orbit
Explore the launch pad, then pull back to see the shape of the destination orbit.
Understand this orbit
Coverage & sources
Links supplied by the mission data provider.
Coverage and times may change.
Mission coverage
No viewing link has been published yet.
Further reading
Launch Library ↗Follow on iPhone
Get reminders and schedule-change alerts. One active mission free.
Open mission in Spacian ↗