- Tropical disturbance spinning through the Atlantic with few thunderstorms

- Still a chance for development but window beginning to close

- Halong pulling away from Guam in the western Pacific

ATLANTIC

Hurricane Hunter planes have been investigating the area of low pressure over the Atlantic (Invest 93-L) and the environment around it all afternoon. Surprisingly they've found a pretty good swath of tropical storm force winds north of the circulation but only weak winds from the west on the south side. Thunderstorm coverage near the system is almost non existent and without thunderstorms it won't get upgraded to a Tropical Depression or Tropical Storm (Bertha). That said, in the tropics thunderstorm coverage is typically greatest during the overnight and early morning hours so it'll need to be watched this evening.

(MORE: Potential Atlantic Development)

Regardless, the disturbance has a rough road ahead with very dry air and strong northeasterly shear lying in wait. Most likely 93L will be a squally rainmaker for the islands of the eastern Caribbean, including the U.S. Virgin Islands and Puerto Rico, this weekend. This is an area of the tropics that could use the rainfall, as parts of Puerto Rico are currently experiencing a moderate drought per NCDC.

(MORE: Glossary of Tropical Terms | New NHC Storm Surge Maps)

PACIFIC

Tropical Storm Iselle has formed in the eastern Pacific but is headed out to sea. Meanwhile, Genevieve has once again dissipated over the central Pacific and poses no threat to land.

Two tropical systems are moving through the western Pacific. Severe Tropical Storm Nakri is drenching parts of southern Japan with Tropical Storm Halong following in its footsteps and expected to add to the rain totals by the middle of next week.