Purpose. Observations of sea level oscillations and atmospheric pressure fluctuations on the Russian coast of the Sea of Japan during the passage of Typhoon Hinnamnor on September 5, 2022 are presented. The study is aimed at explaining physical mechanisms of anomalous changes in the sea level at the Preobrazhenie coastal location (Primorye, Russia) during this event.

Methods and Results. Numerical modeling of long waves induced by this typhoon is performed using the NAMI-DANCE computed package. It is demonstrated that the observed filtered records and computed mareograms are in good agreement. Special attention is paid to the sensitivity of the results to even weak variations of the typhoon trajectory and it is shown that the sensitivity is significant.

Conclusions. The phenomenon of anomalous changes in the sea level at the Preobrazhenie coastal location can be explained by the peculiar structure of the coastline. Presumably, focusing of surface waves generated by the changes in atmospheric pressure occurred. This result should be of interest when designing coastal infrastructure of the region. Three scenarios of numerical modeling of typhoon passage were investigated and the results showed that a slight change in the trajectory had a significant effect on the distribution of wave heights along the Russian coast of the Sea of Japan.