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Super Typhoon Jelawat (18W) Affecting Philippines – September 25th, 2012

16.0N 126.6E

September 25th, 2012 Category: Tropical Cyclones

Super Typhoon Jelawat (18W) – September 25th, 2012

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Track of Super Typhoon Jelawat (18W) - September 25th, 2012 © Univ. of Wisconsin

Track of TY 18W

Super Typhoon Jelawat (18W) is currently churning across the Philippines Sea. Jelawat became a dangerous storm over the weekend with a perfectly symmetrical circulation and clear, well-defined eye. The storm underwent explosive intensification, almost doubling strength over the course of 12 hours.

Super Typhoon Jelawat is currently located approximately 400 nautical miles east-northeast of Manila, Philippines, having tracked northward at 4 knots over the past six hours. Maximum significant wave height is 45 feet.

Despite being hundreds of miles away from the Philippines, the system has already brought gusty thunderstorms and drenching rains to the eastern-half of the islands. As the system drifts north and eastward, it will bring the potential to bring major impacts to the islands.

While a direct landfall is not currently forecast, the system’s proximity to Luzon could still lead to serious impacts. Heavy and gusty showers and thunderstorms are expected to bombard the island for days to come. Due to the mountainous terrain of Luzon and much of the Philippines, extreme rainfall amounts, flash-flooding and mudslides are possible. Jelawat is forecast to pass east of Luzon, on a northward path generally near Taiwan.

Tropical Storm Nesat (20W) Expected to Reach Typhoon Strength, Make Landfall Over Luzon – September 24th, 2011

12.8N 128.4E

September 24th, 2011 Category: Image of the day, Tropical Storms

Tropical Storm Nesat (20W) - September 24th, 2011

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Track of Tropical Storm Nesat (20W) - September 24th, 2011 © Univ. of Wisconsin

Track of TS 20W

As of 18:45 UTC September 24, Tropical Storm Nesat was located within 30 nautical miles of 15.0°N 132.0°E, about 730 nmi (1,350 km; 840 mi) east of Manila, Philippines.

Maximum sustained winds are 45 knots (83 km/h; 52 mph), gusting to 65 knots (120 km/h; 75 mph). Minimum central pressure is 990 mbar (hPa; 29.23 InHg), and the system is moving west at 16 knots (30 km/h; 18 mph).

Nesat is now a weak storm. However, it is expected to strengthen and become a typhoon before making landfall over northern Luzon. The area of 30 kt winds or more ranges upto 280 km (170 mi) from the center to the northeast side and 220 km (140 mi) from the center to the southwest side.

Northern Luzon and Babuyan Islands, Philippines

17.2N 120.8E

June 16th, 2011 Category: Mountains

Philippines - May 23rd, 2011

This image shows the northern part of the island of Luzon, in the Philippines. The northern area contains the large mountain range, the Cordillera Central which is covered in a mixture of Luzon tropical pine forests and Luzon montane rain forests.

Visible across the Babuyan Channel, to the north of the island, are the Babuyan Islands. They form an archipelago consisting of five major islands located in the Luzon Strait north of Luzon island in the Philippines. Geologically the islands are part of the Luzon Volcanic Arc.

Visible at the lower left is the Lingayen Gulf, an extension of the South China Sea by Luzon that sits between the Zambales Mountains and the Cordillera Central. The Agno River drains into the gulf.

Cordillera Central and Lingayen Gulf of Luzon, Philippines

16.5N 121.2E

May 27th, 2011 Category: Mountains

Philippines - May 18th, 2011

This image shows central to northern Luzon, the largest island in the Philippines. The northern part of the island contains the large mountain range, the Cordillera Central.

To the east of the Cordillera Central is the large Cagayan Valley. To the east of the valley rises the Sierra Madre mountain range, easily the longest range in the country.

The Lingayen Gulf can be observed on the west side of the island in the lower left quadrant. It is an extension of the South China Sea, stretching 56 km. It sits between the Zambales Mountains and the Cordillera Central.

Typhoon Megi (15W) Expected to Intensity and Make Landfall Over Luzon – October 16th, 2010

20.0N 130.0E

October 16th, 2010 Category: Image of the day, Tropical Cyclones

Typhoon Megi (15W) - October 15th, 2010

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Track of TY 15W

Typhoon Megi (15W) is located approximately 780 nm east of Manila, Philippines, and has tracked northwestward at 15 knots over the past six hours. Maximum significant wave height is 27 feet.

Animated infrared (IR) satellite imagery and an AMSU microwave image depict a well-defined low level circulation center (LLCC) with tightly-curved banding.

Animated water vapor imagery continues to indicate good overall outflow with some improvement along the northwest quadrant as the tutt low, previously located near 20N 130E, begins to fill and move northwestward.

The current intensity of 95 knots is slightly higher then Dvorak estimates of 90 knots from PGTW and RJTD based on an improved banding signature in IR imagery over the past 6 hours.

TY 15W is currently tracking northwestward along the southwestern periphery of the mid-level subtropical ridge (STR) toward a weakness associated with a major mid-latitude shortwave trough. As the trough continues to propagate northeastward, the STR is expected to reorient and re-build to the west, allowing the system to turn westward between TAU 24 and TAU 36.

Megi is forecast to continue to intensify under favorable upper level and oceanic (high SST and high ocean heat content) conditions as it approaches Luzon. The system is expected to make landfall over northern Luzon between TAU 48 and TAU 72 at or near super typhoon intensity and should weaken considerably due to interaction with the mountainous terrain of Luzon. After TAU 72, Megi is expected to re-emerge into the south China Sea at typhoon intensity and track westward toward Hainan.

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