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Tropical Storm Halong (2008)

Severe Tropical Storm Halong (Cosme)
Severe tropical storm (JMA scale)
Category 1 (Saffir–Simpson scale)
Halong 2008 peak intensity.jpg
Severe Tropical Storm Halong near peak intensity on May 17
Formed May 14, 2008
Dissipated May 23, 2008
(Extratropical after May 20, 2008)
Highest winds 10-minute sustained: 110 km/h (70 mph)
1-minute sustained: 140 km/h (85 mph)
Lowest pressure 970 hPa (mbar); 28.64 inHg
Fatalities 51 direct, 10 indirect, 3 missing
Damage $100 million (2008 USD)
Areas affected Philippines and Japan
Part of the 2008 Pacific typhoon season

Severe Tropical Storm Halong, known in the Philippines as Severe Tropical Storm Cosme, was the fourth severe tropical storm named by the Japan Meteorological Agency (JMA) who are the Regional Specialized Meteorological Centre for the Northwestern Pacific Ocean. The Joint Typhoon Warning Center also recognised Halong as the fifth tropical depression, the fourth tropical storm as well as the third typhoon of the 2008 Pacific typhoon season.

Late on May 13 a tropical disturbance formed in the South China Sea. Early the next day, the Japan Meteorological Agency (JMA) and the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) designated the disturbance as a tropical depression, with PAGASA assigning the local name of Cosme. However the Joint Typhoon Warning Center (JTWC) did not issue a Tropical Cyclone Formation Alert until later that day. The JTWC then designated the depression as 05W on May 15. On May 16 both the JMA and the JTWC upgraded the depression to a tropical storm with the JMA designating it as Tropical Storm Halong and assigning the international number of 0804. This was 12 hours after PAGASA had upgraded it to a tropical storm. During that day Halong kept intensifying and was designated as a severe tropical storm early the next day by the JMA as it reached its peak wind speeds of 60 knots (70 mph 115 km/h). The JTWC then upgraded Halong to a typhoon with peak wind speeds of 70 knots (80 mph 130 km/h)) which made Halong a Category one typhoon on the Saffir-Simpson Hurricane Scale.

Later on May 17, Halong made landfall on the Philippine region of Pangasinan and travelled towards the northeast over Luzon. While over land Halong weakened into a tropical storm with both the JTWC and the JMA downgrading Halong early the next day. Later that day after reaching the Philippine Sea, Halong started to restrengthen and intensified into a severe tropical storm. However it did not intensify any further and on May 19 weakened into a tropical storm. Later that day, PAGASA issued their final advisory on Halong as it moved out of their area of responsibility. The JTWC then issued their last advisory on Halong as it had begun its extratropical transition. The JMA then reported that it had completed its extratropical transition and issued their final advisory on the remnant low of Halong. The remnants of Halong dissipated on May 24.


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