Holy cow.
Please tell me it’s a defective sensor.
Update 8:56 AM EDT -- NASA advises that a small meteor could have impacted the ocean in that area, from the Lyrid Meteor Shower, which peaked last night. Normally, the small meteors from this annual event never make it to the surface of the earth; they usually burn up in our atmosphere before reaching the ground. HOWEVER, it is possible that a small meteor, perhaps the size of a softball, made it to the ocean and, upon impact at 14,000 MPH, would cause quite a localized wave. There is no way to verify this possibility.
If it was real sensor event, we would have already known about it.