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The blazar S5 0716+714 has been monitored in its flaring state between 2015January 19 and February 22 with Swift/XRT. During this period an exceptionalflux level was observed in the X-ray range as well as in the other wavelengths,e.g. optical, near infrared and very high energy $\gamma$ rays. Here, we reportX-ray observations of S5 0716+714 carried out during the outburst. The observedX-ray spectra, well described with broken power-law model, disentangle bothsynchrotron and inverse Compton components. The break energy shifts towardshigher energies with increasing flux, revealing the dominance of synchrotronradiation in the X-ray spectrum observed. We also report spectrum softeningwith increasing flux. During the recent flare, significant temporal intranightvariability is observed in the X-ray range.

Swift/XRT view on S5 0716+714 during a flare