TITLE: GCN CIRCULAR NUMBER: 27615 SUBJECT: IceCube-200421A: not observable by Fermi-GBM DATE: 20/04/21 20:16:14 GMT FROM: Rachel Hamburg at UAH R. Hamburg (UAH) and P. Veres (UAH) report on behalf of the Fermi-GBM Team: For the IceCube high-energy neutrino candidate event 200421A (GCN 27612), the reported position: RA: 87.93 (+3.44/-2.83 deg 90% PSF containment) J2000 Dec: 8.23 (+2.09/-1.84 deg 90% PSF containment) J2000 was occulted by the Earth for Fermi-GBM from approximately from 16.2 minutes prior until 18.1 minutes after event time. Therefore, the GBM observations are not constraining for prompt gamma-ray emission.