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Tropical Storm Co-may Brings Wind and Rain to Northern Luzon

Tropical Storm Co-may brought wind and rain to northern Luzon on Thursday.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Co-may was located at latitude 17.5°N and longitude 120.6°E which put the center about 10 miles (15 km) east of Vigan, Philippines.  Co-may was moving toward the northeast at 12 m.p.h. (19 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 980 mb.

The center of former Typhoon Co-may made landfall on the coast of northwestern Luzon west of Baguio on Thursday.  Co-may weakened back to a tropical storm after the center of circulation moved inland over Luzon.

The circulation around Tropical Storm Co-may was small.  Winds to tropical storm force extended out 60 miles (95 km) from the center of Co-may’s circulation.

Tropical Storm Co-may will continue to produce strong winds and locally heavy rain in northern Luzon during the next few hours.  Heavy rain could cause flash floods and mudslides.  Co-may is likely to cause widespread outages of electricity in northern Luzon.  Tropical Storm Co-may could also cause a storm surge of up to 7 feet (2 meters) along the coast of northwestern Luzon.

Tropical Storm Co-may will get pulled toward the northeast by the much larger circulation around Tropical Storm Francisco.  On its anticipated track, Tropical Co-may will move north of Luzon in a few hours.  Tropical Storm Co-may will pass east of Taiwan on Friday.

Tropical Storm Co-may will continue to weaken as it moves across northern Luzon.  Co-may will move through an environment that will be unfavorable for intensification after it moves north of Luzon.  Co-may will move over water where the Sea Surface Temperatures are near 29°C.  However, it will move under the southeastern side of an upper level low that is centered over the east coast of China.  The upper level low will produce southwesterly winds that will blow toward the top of Co-may’s circulation. Those winds will cause strong vertical wind shear.  The strong vertical wind shear will cause Tropical Storm Co-may to continue to weaken when it moves north of Luzon.

Elsewhere over the Western North Pacific Ocean, the center of Tropical Storm Francisco moved west of Okinawa and Tropical Storm Krosa formed west of the Marianas.

At 5:00 p.m. EDT on Thursday the center of Tropical Storm Francisco was located at latitude 27.0°N and longitude 124.3°E which put the center about 180 miles (290 km) west of Okinawa.  Francisco was moving toward the west-northwest at 23 m.p.h. (37 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 991 mb.

At 5:00 p.m. EDT on Thursday the center of Tropical Storm Krosa was located at latitude 16.5°N and longitude 143.3°E which put the center about 170 miles (280 km) west-northwest of Tinian. Krosa was moving toward the north at 6 m.p.h. (10 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 999 mb.

Co-may Strengthens to a Typhoon

Former Tropical Storm Co-may strengthened to a typhoon over the Western North Pacific Ocean west of northern Luzon on Thursday.  At 5:00 a.m. EDT on Thursday the center of Tropical Storm Co-may was located at latitude 16.2°N and longitude 119.6°E which put the center about 65 miles (105 km) west of Baguio, Philippines.  Co-may was moving toward the east at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 100 m.p.h. (160 km/h).  The minimum surface pressure was 974 mb.

Former Tropical Storm Co-may strengthened to a typhoon as it approached the coast of northwestern Luzon on Thursday.  Numerous thunderstorms were occurring near the center of Co-may’s circulation.  Bands of showers and thunderstorms were revolving around the center of Typhoon Co-may.  Storms near the center of Co-may generated upper level divergence that pumped mass away from the typhoon.  The removal of mass caused the surface pressure to decrease.

The circulation around Typhoon Co-may was small.  Winds to typhoon force extended out 20 miles (30 km) from the center of Co-may’s circulation.  Winds to tropical storm force extended out 100 miles (160 km) from the center of Typhoon Co-may.

Typhoon Co-may will move through an environment somewhat favorable for intensification during the next few hours.  Co-may will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southeastern side of an upper level low that is centered over the east coast of China.  The upper level low will produce southwesterly winds that will blow toward the top of Co-may’s circulation.  Those winds will cause moderate vertical wind shear. The vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification. Typhoon Co-may could intensify a little more during the next few hours.

Typhoon Co-may will get pulled toward the northeast by the much larger circulation around Tropical Storm Francisco.  On its anticipated track, Typhoon Co-may will make landfall on the coast of northern Luzon near Bolinao in a few hours.  The center of Co-may will pass just west of Baguio.  The center will pass south of Vigan.

Typhoon Co-may will bring strong winds and locally heavy rain to northern Luzon.  Heavy rain could cause flash floods and mudslides.  Typhoon Co-may is likely to cause widespread outages of electricity in northern Luzon.  Co-may could also cause a storm surge of up to 7 feet (2 meters) along the coast of northwestern Luzon.

Elsewhere over the Western North Pacific Ocean, the center of Tropical Storm Francisco was approaching  Okinawa.  At 5:00 a.m. EDT on Thursday the center of Tropical Storm Francisco was located at latitude 25.2°N and longitude 127.4°E which put the center about 110 miles (175 km) south of Okinawa.  Francisco was moving toward the north at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 987 mb.

Tropical Storm Saudel Brings Wind and Rain to Luzon

Tropical Storm Saudel brought wind and rain to Luzon on Tuesday. At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Saudel was located at latitude 15.8°N and longitude 121.6°E which put it about 120 miles (195 km) northeast of Manila, Philippines. Saudel was moving toward the west at 11 m.p.h. (17 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 997 mb.

The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) determined based on weather radar that the center of Tropical Storm Saudel made landfall on the east coast of Luzon north of Baler on Tuesday. Saudel was getting stronger at the time of landfall. The radar indicated that there was a small, tight center of circulation. Bands of showers and thunderstorms wrapped closely around the center of Tropical Storm Saudel. Other outer rainbands were revolving around the center. Satellite imagery showed that storms near the center were generating upper level divergence which pumped mass away to the west and north of the tropical storm. Winds to tropical storm force extended out 150 miles (240 km) from the center of Saudel.

Tropical Storm Saudel will move across northern Luzon during the next 12 hours. Saudel will bring gusty winds an it will drop locally heavy rain over parts of northern Luzon. Heavy rain could could cause flash floods in some locations. Tropical Storm Saudel will weaken while the center crosses Luzon. The center of Saudel is likely to emerge over the South China Sea near Baguio in about 12 hours.

Tropical Storm Saudel will move through an environment that will be favorable for intensification when it moves over the South China Sea.  Saudel will move over water where the Sea Surface Temperature is near 30°C.  It will be under the southern part of an upper level ridge.  The ridge will produce easterly winds which will blow toward the top of the circulation.  Those winds will cause some vertical wind shear.  The shear will inhibit intensification but it will not be strong enough to keep Tropical Storm Saudel from intensifying. Saudel will begin to strengthen again when it moves back over water and it could intensify into a typhoon.

Tropical Storm Saudel will move south of a ridge of high pressure over eastern Asia.  The ridge will steer Saudel toward the west during the next several days.  On its anticipated track Tropical Storm Saudel will approach the coast of Vietnam in a few days.

Tropical Storm Kalmaegi Brings Wind and Rain to Northern Luzon

Tropical Storm Kalmaegi brought wind and rain to northern Luzon on Tuesday night.  At 10:00 p.m. EST on Tuesday the center Tropical Storm Kalmaegi was located at latitude 17.0°N and longitude 121.2°W which put it about 70 miles (110 km) northeast of Baguio, Philippines.  Kalmaegi was moving toward the south-southwest at 15 m.p.h. (24 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 987 mb.

Former Typhoon Kalmaegi weakened to a tropical storm before it made landfall on the north coast of Luzon near Aparri.  Kalmaegi was under the western end of an upper level ridge.  The ridge produced strong southerly winds which blew toward the top of the circulation.  Those winds caused moderate vertical wind shear which weakened thunderstorms in the southern half of the circulation.  Drier air from Asia was pulled into the western part of the tropical storm.  The stronger thunderstorms were occurring northeast of the center of circulation.  Winds to tropical storm force extended out 100 miles (160 km) from the center in most parts of Tropical Storm Kalmaegi.  A high pressure system over Asia was contributing to a bigger pressure gradient in the northwestern quadrant of Kalmaegi and winds to tropical storm force extended out 200 miles (320 km) in that area.

Tropical Storm Kalmaegi was dropping locally heavy rain over parts of northern Luzon.  The heavy rain was creating the potential for flash floods.  Kalmaegi will be steered toward the southwest by the high pressure system over Asia. On its anticipated track the center of Tropical Storm Kalmaegi will pass near Baguio.  Kalmaegi will continue to weaken as it moves over northern Luzon.  It will move over the South China Sea northwest of Manila.  Tropical Storm Kalmaegi will continue to drop heavy rain over parts of Luzon and the flash flood threat will continue for several more days.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Fung-wong developed east of Luzon on Tuesday night.  At 10:00 p.m. EST the center of Tropical Storm Fung-wong was located at latitude 16.3°N and longitude 127.8°E which put it about 425 miles (685 km) east-southeast of Aparri, Philippines.  Fung-wong was moving toward the northwest at 14 m.p.h. (22 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.  Tropical Storm Fung-wong is forecast to strengthen during the next 36 hours while it moves toward the Luzon Strait.