TITLE: GCN CIRCULAR NUMBER: 33308 SUBJECT: GRB 230209A is not a GRB DATE: 23/02/09 17:19:49 GMT FROM: Joshua Wood at MSFC/Fermi-GBM J. Wood (NASA/MSFC) reports on behalf of the Fermi Gamma-ray Burst Monitor Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 697609725/230209187 at 04:28:40 UT on 09 February 2023, tentatively classified as GRB 230209A (GCN 33306), is in fact not due to a GRB. This trigger is likely due to local particles."