Abstract Motivated by recent observations along the west coast of the United States, the authors investigate the generation and propagation of coastal-trapped disturbances in the marine atmospheric boundary layer. Analytic solutions are obtained in a linear, shallow water, reduced-gravity model of the flow subject to forcing by upper-level pressure disturbances and dissipation in the form of wind stress at the sea surface. It is found that unless the mean alongshore flow is to the south with speeds larger than the gravity wave phase speed, a northward propagating coastal-trapped response develops. The superposition of cross-shore propagating forcing and the northward propagating response in marine-layer thickness can give rise to surface pressure ridges at the coast with both narrow and broad cross-shore extent. Wind reversals associated with the disturbance lead the change in surface pressure at the coast. The magnitude of the response increases for weaker inversion strength, greater undisturbed marine-l...