Tag Archives: Tropical Storm Guchol

Guchol Weakens to a Tropical Storm

Former Typhoon Guchol weakened to a tropical storm over the Western North Pacific Ocean south of Japan on Sunday. At 5:00 p.m. EDT on Sunday the center of Tropical Storm Guchol was located at latitude 27.4°N and longitude 136.0°E which put it about 650 miles (1050 km) south-southwest of Tokyo, Japan. Guchol was moving toward the northeast at 20 m.p.h. (32 km/h). The maximum sustained wind speed was 70 m.p.h. (110 km/h) and there were wind gusts to 85 m.p.h. (135 km/h). The minimum surface pressure was 984 mb.

Former Typhoon Guchol weakened to a tropical storm on Sunday when it moved into a less favorable environment. An upper level trough west of Japan produced westerly winds that blew toward the top of Guchol’s circulation. Those winds caused moderate vertical wind shear and the wind shear caused Guchol to weaken. There was no longer an eye at the center of Guchol’s circulation. Thunderstorms were still occurring in bands in the northern and eastern parts of Tropical Storm Guchol. Bands in the western and southern parts of the circulation consisted primarily of showers and lower clouds. Storms near the center of Guchol generated upper level divergence that pumped mass away to the northeast of the tropical storm. Winds to tropical storm force extended out 175 miles (280 km) from the center of circulation.

Tropical Storm Guchol will move through an environment that will be unfavorable for intensification during the next 36 hours. Guchol will move over water where the Sea Surface Temperatures are near 26˚C. The upper level trough west of Japan will continue to produce westerly winds that will blow toward the top of Guchol’s circulation. Those winds will cause moderate vertical wind shear. Tropical Storm Guchol will continue to weaken as it moves over cooler water and is affected by moderate vertical wind shear. Guchol could make a transition to an extratropical cyclone early next week.

The upper level trough west of Japan will steer Tropical Storm Guchol toward the northeast during the next 36 hours. On its anticipated track Tropical Storm Guchol will pass south of Tokyo in less than 24 hours.

Tropical Storm Guchol Intensifies

Tropical Storm Guchol intensified over the Western North Pacific Ocean on Wednesday morning. At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Guchol was located at latitude 15.4°N and longitude 132.8°E which put it about 715 miles (1155 km) south of Minamidiatojima, Japan. Guchol was moving toward the northwest at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 988 mb.

Tropical Storm Guchol intensified over the warm water in the Western North Pacific Ocean west of the Marianas on Wednesday morning. The inner end of a rainband wrapped around the center of Guchol’s circulation and an eye appeared to be forming at the center. Bands of showers and thunderstorms were revolving around the center of Tropical Storm Guchol. Storms near the center of circulation began to generate upper level divergence that pumped mass away from the tropical storm. Winds to tropical storm force extended out 90 miles (145 km) from the center of Guchol.

Tropical Storm Guchol will move through an environment favorable for intensification during the next 36 hours. Guchol will move over water where the Sea Surface Temperatures are near 29˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Tropical Storm Guchol will intensify during the next 36 hours. Guchol could strengthen to a typhoon within 18 hours.

Tropical Storm Guchol will move around the western part of high pressure system over the Western North Pacific Ocean. The high pressure system will steer Guchol toward the northwest during the next 36 hours. On its anticipated track Tropical Storm Guchol will move farther away from the Marianas. Guchol could be south of Minamidaitojima in four days.

Tropical Storm Guchol Forms West of Marianas

Tropical Storm Guchol formed over the Western North Pacific Ocean west of the Marianas on Tuesday. At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Guchol was located at latitude 114.6°N and longitude 134.6°E which put it about 785 miles (1265 km) south-southeast of Minamidiatojima, Japan. Guchol was moving toward the north at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 1000 mb.

A low pressure system over the Western North Pacific Ocean west of the Marianas strengthened on Tuesday and the Japan Meteorological Agency designated the system as Tropical Storm Guchol. The distribution of thunderstorms in Tropical Storm Guchol was asymmetrical. Many of the thunderstorms were occurring bands in the southern half of Guchol’s circulation. Bands in the northern half of the circulation consisted primarily of showers and lower clouds. Storms near the center of circulation began to generate upper level divergence that pumped mass away from the tropical storm. Winds to tropical storm force extended out 45 miles (75 km) from the center of Guchol.

Tropical Storm Guchol will move through an environment favorable for intensification during the next 36 hours. Guchol will move over water where the Sea Surface Temperatures are near 29˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Tropical Storm Guchol will intensify during the next 36 hours. Guchol could strengthen to a typhoon within 36 hours.

Tropical Storm Guchol will move around the western part of high pressure system over the Western North Pacific Ocean. The high pressure system will steer Guchol toward the northwest during the next 36 hours. On its anticipated track Tropical Storm Guchol will move farther away from the Marianas. Guchol could be south of Minamidaitojima in five days.