TITLE: GCN CIRCULAR NUMBER: 11107 SUBJECT: GRB100814A - interesting UVOT lightcurve. DATE: 10/08/16 15:52:03 GMT FROM: Massimiliano de Pasquale at MSSL-UCL M. De Pasquale, C. J. Saxton, and S. R. Oates (MSSL/UCL) report, on behalf of the Swift/UVOT team: Swift GRB 100814A (Beardmore et al. GCN circ 11087) shows an interesting optical/UV lightcurve, with a flux rise detected by UVOT between approximately 10,000 and 100,000 seconds after the trigger. At about 40 hours after the trigger, the afterglow was still of magnitude ~ 19 in the u and v filters. Ground based observatories are encouraged to follow up this event.