  This work is a continuation of the studies of the ultrafast variability of
line profiles in the spectra of early-type stars. Line profile variations
(LPVs) in the spectrum a chemically peculiar A0Vp star $\alpha^2\,$CVn are
investigated using the January 6, 2020 observations carried out with the
6-meter BTA telescope at Special Astrophysical observatory (SAO) of the Russian
Academy of Sciences (RAS) equipped with the MSS spectrograph. Regular
short-term periodic variations of the H$_\beta$, Fe\,II, and Cr\,II lines were
detected with periods ranging from $\sim\!$4 to $\sim\!$140 minutes. The
magnetic field of the star was determined for all observations. The average
measured longitudinal magnetic field component over the entire duration of
observations is about $\approx$600\,G, which is close to the value expected
from the well-known magnetic field phase curve.
