The latest GOES16 satellite closeup of the eye of Hurricane Michael suggests it has further intensified and now stands on the threshold of a CAT5 storm. It would become Cat5 at 156mph sustained winds

NASA: Max sustained winds in high-end Cat 4 #Hurricane #Michael have unfortunately continued to intensify, now at 150 MPH! Pressure down to 27.26″. (@NOAA GOES-East 30-sec vis imagery)

Source: https://twitter.com/NASA_SPoRT/status/1050048660648710144