Tropical Cyclone 02E (Barbara) / Tropical Cyclone 03E (Cosme) / Tropical Cyclone 01W – Pacific
Tuesday, June 10, 2025

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By PDC’s Senior Weather
Specialist Glenn James

The Pacific Disaster Center’s (PDC Global) Tuesday, June 10, 2025, Tropical Cyclone Activity Report…for the Pacific Ocean, the Indian Ocean, and adjacent Seas

Current Tropical Cyclones:

Post-Tropical Cyclone (02E) Barbara…is located about 160 miles west-northwest of Cabo Corrientes, Mexico – Last Advisory

Tropical Cyclone 03E (Cosme)…is located about 585 miles southwest of the southern tip of Baja CA

Tropical Cyclone 01W…is located about 323 NM east of Da Nang, Vietnam

 

Northeast Pacific Ocean:  

 

Post-Tropical Cyclone 02E (Barbara) – Last Advisory

BARBARA HAS BECOME A REMNANT LOW

According to the NHC advisory number 12

The post-tropical cyclone is moving toward the north near 5 mph (7 km/h), and this general motion is expected to continue overnight. Maximum sustained winds have decreased to near 30 mph (45 km/h) with higher gusts. Weakening is forecast, and the system is expected to dissipate in a day or so,

 

Tropical Cyclone 03E (Cosme)

COSME FORECAST TO BECOME A REMNANT LOW ON WEDNESDAY

According to the NHC advisory number 11

Cosme is moving toward the north-northeast near 5 mph (7 km/h). This general motion with an increase in forward speed is expected through Wednesday, followed by a turn back to the north-northwest on Thursday. Maximum sustained winds have decreased to near 45 mph (75 km/h) with higher gusts. Additional weakening is forecast, and Cosme is expected to degenerate into a remnant low on Wednesday. The remnant low is forecast to dissipate by late Thursday or Friday. Tropical-storm-force winds extend outward up to 35 miles (55 km) from the center.

 

South of southern Mexico

>>>  A broad area of low pressure located several hundred miles south of the Gulf of Tehuantepec continues to produce disorganized shower and thunderstorm activity. Environmental conditions appear conducive for gradual development of this system, and a tropical depression is expected to form late this week or over the weekend while it moves generally west-northwestward just offshore the southwestern coast of Mexico.

* Formation chance through 48 hours…low…20 percent
* Formation chance through 7 days…high…90 percent

Offshore of Central America and Southern Mexico

>>> An area of low pressure could form by late this weekend or early next week near the coast of Central America. Gradual development is possible thereafter as it moves slowly west-northwestward near the coasts of Central America and southern Mexico.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…20 percent

 

Central Pacific Ocean: There are no Tropical Cyclones

Tropical cyclone ormation is not expected during the next 7-days.

 

Western Pacific, Indian Ocean, and adjacent Seas:  

Western Pacific

Tropical Cyclone 01W



According to the JTWC Warning number 3, sustained winds are 30 knots with gusts to 40 knots
Animated enhanced infrared satellite imagery depicts a partially obscured low-level circulation with persistent deep convection displaced to the southwest, resulting from shear introduced by a tropical upper tropospheric trough (tutt) cell positioned to the west.


Tropical depression 01W is forecast to track northwestward for the first 72 hours of the forecast under the steering influence of a deep-layer subtropical ridge located to the northeast. After crossing the ridge axis at 72 hours, TD 01W will be driven northeastward on the northern periphery of the subtropical ridge.

The system will make landfall in the vicinity of the Leizhou Peninsula between 96 and 120 hours. In the early term forecast, strong 15-20 knot shear will persist for the first 24-48 hours, but the tutt cell invoking the strong shear will fill allowing for favorable low shear.

The upper-level environment will improve allowing for strong diffluent outflow feeding into a nearing upper-level trough allowing for a poleward outflow channel. The system will peak with an intensity of 55 knots at 48 hours, followed by a weakening trend as TD 01W interacts with the topography of Hainan Island between 48-72 hours and the Leizhou Peninsula between 96 and 120 hours.