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How fast do winds blow around Jupiter’s Great Red Spot?

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photo of Jupiter taken by Voyager 1 — Jupiter Photograph of Jupiter taken by Voyager 1 on February 1, 1979, at a range of 32.7 million km (20.3 million miles). Prominent are the planet's pastel-shaded cloud bands and Great Red Spot (lower centre).

Winds around the periphery of Jupiter’s Great Red Spot reach velocities of approximately 400 km (250 miles) per hour.12

These superhurricane-force winds occur as the massive anticyclonic storm system rotates in a counterclockwise direction, completing one full rotation about every seven days.12