A trio of systems is active across the Central and East Pacific today, with a new tropical depression forming in the East Pacific and a strengthening storm nearing hurricane force.

Read more Warriors defense preparing to take on Stanford’s experienced O-line

Tropical Depression Moke continues to track west away from Hawaii at 16 mph, located about 515 miles east of Johnston Island with maximum sustained winds holding steady at 35 mph, according to the Central Pacific Hurricane Center.

Forecasters note that while a large cluster of thunderstorms developed on the western side of Moke, dry air and strong downdrafts are expected to cause it to lose organization, leading CPHC officials to project Moke to weaken into a remnant low later today and dissipate completely by Tuesday.

Despite moving farther southwest, Moke’s outer moisture bands continue to pose a threat to Hawaii, keeping a flood watch in effect for the Big Island through late afternoon today.

Weather officials warn that shifting winds could drive heavier rainfall against slopes and generate an additional 1 to 3 inches of rain, adding that “it will not take a significant amount of rain to cause flash flooding” across low-lying, urban and flood-prone areas due to saturated soils.

Farther east, Tropical Storm Iselle has strengthened rapidly approximately 580 miles west-southwest of the southern tip of Baja California, moving northwest at 13 mph with maximum sustained winds of 70 mph and higher gusts.

Read more More than 6,000 HECO customers still without power; additional crews, equipment arrive

National Hurricane Center officials said that “additional strengthening is likely through this evening, and Iselle could become a hurricane during that time” before encountering cooler waters and increasing wind shear that will trigger a steady weakening trend later Tuesday.

While no coastal watches or warnings are in effect for land, ocean swells generated by Iselle continue to affect the west coast of the Baja California Peninsula, bringing hazardous and life-threatening surf and rip current conditions over the next few days.

South of Iselle, Tropical Depression Ten-E organized over open waters about 965 miles southwest of Baja California, moving north at 8 mph with maximum sustained winds of 35 mph.

Ten-E may briefly strengthen into a weak tropical storm tonight as it accelerates northward, but its lifespan will be brief as the system is pulled directly toward the larger circulation of Tropical Storm Iselle, which is expected to absorb Ten-E by Tuesday night, the NHC said.

Read more Cal Raleigh hits 3 homers as Seattle Mariners rout red-hot Phillies