Hurricane Olaf (2021)

Hurricane Olaf
Hurricane Olaf nearing peak intensity as it approaches Baja California Sur on September 9, 2021.
Meteorological history
FormedSeptember 7, 2021
Remnant lowSeptember 11, 2021
DissipatedSeptember 12, 2021
Category 2 hurricane
1-minute sustained (SSHWS/NWS)
Highest winds105 mph (165 km/h)
Lowest pressure975 mbar (hPa); 28.79 inHg
Overall effects
Fatalities1 total
Damage$10 million
Areas affectedWestern Mexico, Baja California Sur
IBTrACS / [1]

Part of the 2021 Pacific hurricane season

Hurricane Olaf was a Category 2 Pacific hurricane that struck the Baja California Peninsula in September 2021. The fifteenth named storm and sixth hurricane of the 2021 Pacific hurricane season, the cyclone formed from an area of low pressure that developed off the southwestern coast of Mexico on September 5, 2021. The disturbance developed within a favorable environment, acquiring more convection and a closed surface circulation. The disturbance developed into Tropical Depression Fifteen-E by 18:00 UTC[a] on September 7. The depression strengthened into a tropical storm and was named Olaf at 12:00 UTC the next day. Olaf quickly strengthened as it moved to the north-northwest, and was upgraded to a hurricane 24 hours after being named. Hurricane Olaf continued to intensify and reached peak intensity while its center was just offshore the southwestern coast of Baja California Sur, with maximum sustained winds of 105 mph (169 km/h) and a minimum barometric pressure of 975 mbar (28.8 inHg). Just after reaching peak intensity, the hurricane made landfall near San José del Cabo. Interaction with the mountainous terrain of the Baja California Peninsula caused Olaf to quickly weaken. It was downgraded to a tropical storm at 12:00 UTC on September 10. The system became devoid of convection later that day and degenerated to a remnant low by 06:00 UTC on September 11.

The precursor disturbance to Olaf caused flooding in the southwestern Mexican states of Jalisco and Colima. The storm triggered school, port, and COVID-19 vaccination-site closures in Baja California Sur as it approached the peninsula. Severe rainfall, flooding, mudslides, uprooted trees and damage to power lines and hotels affected the state as the hurricane made landfall and moved over the peninsula. Total damage from Olaf was estimated at USD$10 million,[b] and one person died due to a mudslide produced by the storm in Jalisco.

  1. ^ Andy S. Latto (January 10, 2022). Tropical Cyclone Report: Hurricane Olaf (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved January 10, 2022.


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