TITLE: GCN CIRCULAR NUMBER: 31921 SUBJECT: GRB 220418B: Swift/BAT-GUANO refined location of a short burst DATE: 22/04/19 13:26:14 GMT FROM: Aaron Tohuvavohu at U Toronto James DeLaunay (UAlabama), Aaron Tohuvavohu (U Toronto), Gayathri Raman (PSU), Jamie A. Kennea (PSU), report: Further analysis has improved the location of the short GRB reported in GCN 31919, and its confidence. This new position is fully consistent with the originally reported position, with a smaller uncertainty region. The BAT position is RA, Dec = 224.344 -17.539 deg which is RA(J2000) = 14h 57m 22.56s Dec(J2000) = -17d 32′ 20.4″ with an estimated uncertainty of 3 arcmin. We encourage followup from other instruments.