Whoever knowingly issues or publishes any counterfeit weather forecast or warning of weather conditions falsely representing such forecast or warning to have been issued or published by the Weather Bureau, United States Signal Service, or other branch of the Government service, shall be fined under this title or imprisoned not more than ninety days, or both.
Based on that, Id say he didnt break any laws. Hes just going up there showing off purty pictures. Hell, he didnt know category 5 hurricanes were a thing.
Theyve got to prove that he did it and prove intent. I mean if it went to trial theres a possibility he could lose. ---