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Typhoon Mirinae (23W) Expected to Make Landfall Over Luzon

15.9N 133.5E

October 28th, 2009 Category: Tropical Cyclones

Typhoon Mirinae - October 27th, 2009

Typhoon Mirinae - October 27th, 2009

Track of Mirinae - October 27th, 2009 © Univ. of Wisconsin

Track of Mirinae

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Enhanced image

Typhoon Mirinae (23W), located approximately 305 nautical miles west-northwest of Guam, has tracked westward at 17 knots over the past six hours. Maximum significant wave height is 17 feet.

Animated infrared satellite imagery and an AMSR-E image show a significant increase in organization and intensity over the past 6 hours. A well defined microwave eye is evident in the AMSR-E pass with deep convection extending completely around the southern half of Mirinae.

Upper level analysis shows that the poleward outflow channel has linked with the mid-latitude trough to the north of Mirinae and has helped to fuel rapid intensification over the past 6 hours.

The influence from the trough on the poleward outflow will begin to diminish over the next 12 to 24 hours as the mid-latitude flow re-aligns and becomes more zonal.

TY 23W is expected to continue strengthening through TAU 72 prior to landfall with Luzon; decreasing as it tracks over Luzon into the South China Sea. Land interaction will slow Mirinae from TAU 72 through 120 as it tracks over Luzon, but the cyclone will see a slight increase in track speed upon re-entering the South China Sea.

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