Review comments on the manuscript egusphere-2025-686, entitled: "Variations of the magnetic declination at mid-latitude European stations during the Carrington-like event on 29 October 2003" by Valach et al.

The authors have provided a concise study about the declination variations during the major Halloween storm in 2003. The observed declination changes are consistent with the dayside current wedge model presented by Ohtani (2022). As such, the paper provides a valuable contribution to confirming the model. I can recommend the publication of the manuscript after some minor revisions.                                                         

Abstract: Presently the text is very short. A few more words should be spent, describing the H drop during the storm, e.g. at which latitude is it observed, which local time? What is the importance of the H drop for your interpretation of the D components?

Fig. 2: This is a very busy plot with many curves. For improvement it should be enlarged and the presented time span truncated to 06 to 08 UT. This will improve the readability a little.

Fig. 5: The time for the dot, marking the ∆D minimum at STJ, seems to be very arbitrary. Applying a smoothing to the curves may help to come to more justified results.