Hurricane Pamela was a Category 1 Pacific hurricane that caused seven deaths and US$10 million in damage across the northwestern and western states of Mexico in October 2021. The sixteenth named storm and seventh hurricane of the 2021 Pacific hurricane season, the storm originated from a tropical wave over the Atlantic basin, over the Caribbean Sea. It then quickly crossed into the Pacific Ocean, where it slowly consolidated, with a low-pressure area forming from the wave on October 9. Environmental conditions in the area were proved favorable for tropical cyclogenesis and developed into Tropical Depression Sixteen-E on the next day. It then organized further into Tropical Storm Pamela on that night. Despite wind shear and dry air affecting the cyclone, Pamela continued to strengthen and became a hurricane on October 12 before weakening back to a tropical storm as it continued to succumb onto these factors. However, as the system turned towards the coast of Mexico, Pamela restrengthened to a low-end hurricane before making landfall over Estacion Dimas, Sinaloa on 15:00 UTC on October 13 before rapidly weakening inland. It then dissipated over Coahuila on the early hours on the next day.

The 2021 Pacific hurricane season was a moderately active Pacific hurricane season, with above-average activity in terms of number of named storms, but below-average activity in terms of major hurricanes, as 19 named storms, 8 hurricanes, and 2 major hurricanes formed in all. It also had a near-normal accumulated cyclone energy (ACE). The season officially began on May 15, 2021 in the Eastern Pacific Ocean, and on June 1, 2021, in the Central Pacific in the Northern Hemisphere. The season ended in both regions on November 30, 2021. These dates historically describe the period each year when most tropical cyclogenesis occurs in these regions of the Pacific and are adopted by convention. However, the formation of tropical cyclones is possible at any time of the year, as illustrated by the formation of Tropical Storm Andres on May 9, which was the earliest forming tropical storm on record in the Eastern Pacific. Conversely, 2021 was the second consecutive season in which no tropical cyclones formed in the Central Pacific.