TITLE: GCN CIRCULAR NUMBER: 23179 SUBJECT: Fermi GBM trigger 557014342/180826925 is not a GRB DATE: 18/08/26 23:30:38 GMT FROM: Rachel Hamburg at UAH R. Hamburg (UAH) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 557014342/180826925 at 22:12:17.92 UT on 26 August 2018, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to local particles."