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October 21 in storm history
17 storms in the historical record were active on October 21 — 12 hurricanes, 9 of them major (Category 3+). The strongest was Patricia (2015), a Category 5 hurricane peaking at 185 kt. Data: NOAA HURDAT2 best-track archive (2015–present on this site).
2020s
2010s
Peak winds are lifetime maxima from the NOAA best-track archive, not necessarily the intensity on October 21. Browse all-time records or seasons year by year.