United States

As of Monday early afternoon, EDT, the newest tropical depression, T.D. 11W, is located about 330 miles southeast of Agana, Guam. Depression Eleven is drifting towards the west-northwest at 4 mph with highest sustained winds of 30 mph.

General movement towards the northwest through midweek will bring 11W into the area of the Mariana Islands north of Guam. A marginal environment for develop could allow strengthening to a named tropical storm. Beyond midweek, it is unclear whether development will continue, as a significant increase in vertical wind shear will be possible.

Meanwhile, broad tropical low pressure is present Monday over the open Philippines Sea roughly midway between Taiwan and Guam. Movement is towards the northwest. This low will be in an environment favorable for at least slow development over the next two to three days, so tropical cyclone formation will be possible with potential adverse impact for Okinawa and the southern Ryukyu Islands later in the week.

By AccuWeather.com Meteorologist Jim Andrews