TITLE: GCN CIRCULAR NUMBER: 32506 SUBJECT: GRB 220831A: Swift/BAT-GUANO localization of a short burst DATE: 22/09/01 01:55:51 GMT FROM: Aaron Tohuvavohu at U Toronto Aaron Tohuvavohu (U Toronto), Jamie A. Kennea (PSU), James DeLaunay (UAlabama), Gayathri Raman (PSU), report: Swift/BAT did not successfully trigger on GRB 220831A (T0: 2022-08-31 13:56:33 UTC). 10 seconds of serendipitous event data is available covering the time of this burst, associated with BAT failed trigger #1122435. This data was produced due to an unrelated event that occurred close in time to this burst. There is no long duration GUANO data available for this burst due to lack of prompt notice from other instruments. The duration of the burst, as seen by BAT, is ~1 second. In ground analysis of the available event data, we find the position of the burst with SNR 15.0 in the image domain. The BAT position is RA, Dec = 24.2550 -41.5818, which is: RA (J2000) 01h 37m 01.2s Dec (J2000) -41d 34' 54.5" with an estimated uncertainty of 2 arcminutes. XRT and UVOT follow-up has been requested. Results of follow-up observations will be reported in future circulars.