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This is a brief note discussing the energy dependence of superluminalneutrino velocities recently claimed by OPERA [1,2]. The analysis is based onthe data provided there on this issue, as well as on consistency with neutrinodata from SN1987a as recorded by the Kamioka detector [3]. It is seen that itis quite difficult to reconcile OPERA with SN1987a. The so called Coleman-Glashow dispersion relations do not do that well, if applied at all neutrinoenergies. The so called quantum gravity inspired dispersion relations performfar worse. Near OPERA energies both an energy-independent velocity, as well asa linear energy dependence with an offset that is comparable in value to theobserved {\delta}v by OPERA at 28.1 GeV works very well. Our analysis showsthat precision arrival time data from SN1987a still allow for superluminalbehaviour for supernova neutrinos. A smooth interpolation is given thatreconciles OPERA and SN1987a quite well. It suggests a fourth power energydependence for {\delta}v of supernova neutrinos. This behaviour is insensitiveto whether the velocities are energy-independent, or linearly dependent onenergy, near OPERA scale of energies. Suggestions are made for experimentalchecks for these relations.

OPERA, SN1987a and energy dependence of superluminal neutrino velocity