Auxiliary Material for Paper XXXX Tsunami early warning using earthquake rupture duration Anthony Lomax ALomax Scientific, Mouans-Sartoux, France. Alberto Michelini Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy Introduction This auxiliary material contains one additional table and a set of additional images. Duration_Supplement_Table_S1.txt = Table S1: Events used in this study and analysis results Duration_Supplement_Figure_S1.pdf = Figures S1: Evolution over the first 10 min after OT of the T0>50 s (L_50, upper) and T0>100s (L_100, lower) exceedance level calculations for events in the reference data set (Table S1). Blue vertical lines indicate auto-picked, P-arrival times for each station; a red, yellow or green horizontal bar show the exceedance level for each station, l_50 or l_100, plotted beginning at its first reported time (about 60 and 100 s after the corresponding P time for l_50 and l_100, respectively). A histogram of station exceedance levels is shown to the right; the median (50 percentile) and bounds (20 and 80 percentile), respectively, for event exceedance levels are indicated by solid and dotted white lines on the main plot and as a color coded diamond and error bar to the right of the main plot. Red color indicates exceedance level >=1; yellow color indicates exceedance level >=0.7; green color indicates exceedance level <=0.7. The warning summary includes: "final_warning_level" - median (50 percentile) and bounds (20 and 80 percentile; in parenthesis) of the exceedance level at OT +10 min. "number_warning_levels" - number of station warning levels obtained "number_P_picks" - number of automatic P arrival picks obtained