In Lyme Regis, Dorsetshire, a Squall, Thomas Sully captures a tumultuous seascape. The painting features dark, swirling clouds that suggest an impending storm. The churning sea is depicted with dynamic brushstrokes, creating a sense of movement and urgency.

Small boats struggle against the waves, highlighting the power of nature. The painting is executed in oil on canvas, a medium that allows for rich color and texture. Sully's use of light and shadow enhances the drama of the scene, with sunlight breaking through the clouds. The dimensions are approximately 76 x 102 cm, making it a substantial work that draws the viewer in.

The composition is balanced, with the horizon line dividing the turbulent sky from the restless sea. Thomas Sully was an American artist known for his portraits and landscapes, active during the early 19th century. This work reflects the Romanticism movement, emphasizing emotion and nature's grandeur. An interesting fact about this painting is that it showcases Sully's ability to convey the raw power of the sea, a theme that resonates with viewers.

The artwork is believed to have been painted in the 1830s, a time when maritime themes were popular among artists.