1. The document examines wind patterns around Rishiri Island, Japan using SAR and weather data. It finds evidence of low-level jets forming in the lee of the island under stable atmospheric conditions. 2. The winds are classified into four types based on 115 SAR images. The classification depends on a non-dimensional mountain height parameter and stratification. 3. Strong wind streaks are sometimes observed extending from headlands in Hokkaido under stratified southerly flows. Layer-dependent orographic forcing from the headlands may explain the coexistence of gap winds and wind streaks.