DOE/NNSA is likely not publishing rumors regarding their projects on their web site. You can see stories and videos of similar tests in the same area from the last few years.
Press release history at NNSA shows lots and lots of these similar tests over Boston, San Francisco, etc.
https://nnsa.energy.gov/taxonomy/term/285/all
likely or thumbs up below and 150’ up ... my apology ... truly do not wish confusion ... enough of that exist in triplicate