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Typhoon Mirinae (23W) Still Moving Towards Philippines

15.7N 126.5E

October 29th, 2009 Category: Tropical Cyclones

Typhoon Mirinae - October 29th, 2009

Typhoon Mirinae - October 29th, 2009

Track of Mirinae - October 29th, 2009 © Univ. of Wisconsin

Track of Mirinae

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Typhoon Mirinae (23W), located approximately 650 nautical miles east of Manila, Philippines, has tracked westward at 15 knots over the past six hours. Maximum significant wave height is 30 feet.

The Philippine weather bureau has placed four areas under storm signal number one as Mirinae intensified and continued moving toward Luzon, northern Philippines.

The Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA) forecast Thursday that TY 23W will make a landfall Friday night and bring heavy rains to the provinces of Isabela, Aurora, Northern Quezon and Polillo Islands.

PAGASA has advised residents in these areas, especially those living in low-lying areas and near mountain slopes, to prepare for possible flashfloods and landslides. irinae is expected to bring more rain, and have winds more powerful than Typhoon Parma (19W) which battered northern Luzon early this month.

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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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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