Falcon 9 Block 5 — mission imagery
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TBD

WSF-M2 & BLAZE-2 (USSF-178)

Falcon 9 Block 5SpaceXSpace Launch Complex 4E
Q1 2027 · Date and time TBD
Calendar available when time is confirmed

NextGo for Prop LoadT-35:00

Time to launch

Schedule watchTracking updates
Q1 2027Exact time confirmed closer to launch
Launch Window Confidence
46% — Uncertain

Mission Brief

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.

PayloadWSF-M2 & BLAZE-2 (USSF-178)
OrbitPolar Orbit
CustomerSpaceX
Stages2
PadSpace Launch Complex 4E, Vandenberg SFB, CA, USA

Mission Timeline

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Up next · Countdown

Go for Prop Load

Launch director gives the go to begin fueling

T-35:00
11:25 PM UTC
  • Go for Prop LoadT-35:00
  • RP-1 Loading BeginsT-35:00
  • Stage 1 LOX Loading BeginsT-35:00

Ground vector

Launch site

Site locked

Space Launch Complex 4E

Vandenberg SFB, CA, USA

Global range
SITE LOCK
Latitude
34.632°N
Longitude
120.611°W

Range Weather

Launch commit criteria

Clear
Watch
TrackingNo active constraints
Weather Rules

Tracking no weather issues at this time.

Primary concern
No weather issues
Rule count
0
Temperature
Not reported
Surface wind
Not reported
Window

12:00 AM UTC - 12:00 AM UTC

Vehicle

Falcon 9 Block 5

Profile →
Height70 m
LEO Payload22,800 kg
Launches848
Successes704

Provider

USA • Founded 2002

Schedule History

Only meaningful launch-time and status changes are shown.

1
Dec 3112:00 AM
Mar 3112:00 AM

Schedule updated