Skymap coverage and multiband depths of WFST on the first night for S251112cm. Middle: the overall coverage by WFST, overlaid with the Bilby skymap of S251112cm from Ligo Scientific Collaboration et al. (2025c), showing the 50% (red) and 90% (black) probability contours. Galactic extinction is also indicated, with the contour of E(B − V) = 0.3 shown for reference (E. F. Schlafly & D. P. Finkbeiner 2011). A WFST pointing is represented by a circle with a radius of 1.^∘4. Top: zoomed-in view of the covered regions in the g and r bands over the R.A. range from 9^h to 13^h, corresponding to the region outlined by the blue dashed line in the middle panel. The color map represents the 5σ limiting magnitudes ﹩{m}_{{\rm{lim}}}﹩ and limiting absolute magnitudes ﹩{M}_{{\rm{lim}}}﹩, calculated assuming the mean GW luminosity distance of 93 Mpc. The top-right panel shows the cumulative GW localization probability covered by WFST as a function of limiting absolute magnitudes in the g, r, and i bands. Bottom: zoomed-in view of the covered regions in g, r, and i bands over the R.A. range from 22^h to 24^h, corresponding to the region outlined by the red dashed line.