Roslyn is rapidly strengthening in the Pacific, approaching western Mexico

The eastern Pacific continues to stir up powerful hurricanes, including the fourth major storm (Category 3 or stronger) of the season that formed overnight and is expected to hit western Mexico in the next 24 hours.

Hurricane Roslyn quickly strengthened from a tropical storm to a tropical storm yesterday morning High end Category 3 125 mph hurricane this morning.

Roslyn’s rate of gain — nearly 65 miles per hour in 24 hours — is impressive, having been surpassed or equaled by Hurricanes Orlene and Darby earlier this year. Only about 0.6% of all tropical or subtropical cyclone “fixes” (6-hourly storm intensity estimates) in the eastern Pacific show such rapid intensification.

Ahead of Darby in July, we need to return to Kiko in September 2019 to find an eastern Pacific storm that is strengthening so rapidly.

(National Hurricane Center)

Roslyn is expected to strengthen further into a Category 4 hurricane later today as it heads toward the states of Jalisco and Nayarit in western Mexico.

While wind shear is expected to increase tonight and early Sunday as it nears shore, it likely won’t have time to weaken significantly before making landfall overnight. Roslyn poses a serious threat not only to the coast, but also to mountainous areas inland, where torrential rains could cause widespread flash flooding and landslides.

Meanwhile, things remain calm in the Atlantic. NHC highlights a nontropical depression that arose from an old stationary front in the central Atlantic.

The small but defined whirlpool area they’ve dubbed Invest 94L is struggling to sustain organized thunderstorms as it darts west across open waters.

(WPLG)

The system has little chance of forming over the next day or two before increasingly hostile upper level winds close the narrow window of development. Regardless of development, 94L poses no threat to land.

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https://www.local10.com/weather/hurricane/2022/10/22/roslyn-rapidly-strengthens-in-the-pacific-nearing-western-mexico/ Roslyn is rapidly strengthening in the Pacific, approaching western Mexico

Sarah Y. Kim

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