Tropical Storm Moke to cause more flooding as Hawaii recovers from Lala

Hawaii Faces a Second Tropical Blow Within Days of Hurricane Lala’s Devastation

Ecorescuezone.com – The Hawaiian islands are preparing for another round of torrential rain and damaging winds as Tropical Storm Moke tracks toward the archipelago from the south, arriving less than seven days after Hurricane Lala unleashed catastrophic flooding across the chain. Forecasters warn that the compounding effect of two major tropical systems in rapid succession places extraordinary strain on roads, drainage networks, and power infrastructure that have barely begun to recover from the first event.

The National Hurricane Center, part of NOAA’s National Weather Service, issued an advisory late Saturday night (local time) confirming that Moke is already delivering precipitation to the Big Island and will continue pushing rain onto the remaining inhabited islands through Monday. The storm’s center is not projected to make landfall; instead, it will pass to the south of the Hawaiian chain, keeping the islands in its outer rainbands and wind field for an extended period.

Rainfall Projections and Terrain Risk

Model guidance embedded in the advisory projects up to 15 inches of rainfall across portions of the Big Island, with eastern Maui expected to receive between 3 and 6 inches. For an archipelago whose interior is dominated by steep volcanic ridges, those totals translate quickly into flash flooding, debris flows, and channelized runoff that overwhelms roadways and small bridges.

“This rainfall may produce life-threatening flooding and mudslides for the windward and southeast Big Island, especially in deep terrain and over areas that were recently affected by Lala,” the National Hurricane Center stated in its advisory.

The reference to terrain recently scarred by Lala is critical. Soil that has already been saturated, stripped of vegetation, or loosened by prior mudslides has dramatically reduced capacity to absorb additional rainfall. Even moderate rain on such ground can trigger secondary slides that close highways for days or weeks, isolating rural communities and hampering emergency-response vehicles.

The Aftermath of Hurricane Lala Still Unfolds

Hurricane Lala, now downgraded to a tropical storm, is moving northwest across the open Pacific at a reduced speed, well clear of the islands. It, too, never made landfall, yet its outer bands dumped more than 30 inches of rain on localized areas of Hawaii within a compressed timeframe. The resulting floodwaters swept through several towns, tore homes from their foundations, and destroyed critical segments of road and bridge infrastructure across multiple islands.

As of Saturday morning, more than 8,000 residents remained without electricity. Hawaiian Electric, the territory’s primary grid operator, indicated that full restoration of the power supply is not anticipated before September 8. For island communities where water pumping, refrigeration, and medical equipment all depend on reliable electricity, a multi-week outage compounds every other recovery challenge.

Human Toll and Government Response

At least one resident, a 90-year-old woman, lost her life in flooding directly attributed to Lala’s rainfall. On Saturday, Hawaii Governor Josh Green signed a formal request to the White House asking for a federal emergency declaration in the wake of the hurricane. Such a declaration unlocks additional FEMA funding for debris removal, temporary housing, and infrastructure repair, resources that become essential when a second storm threatens to undo weeks of recovery work.

Local Officials Urge Residents to Prepare Again

Hawaii County Mayor Kimo Alameda addressed residents on Sunday, urging them to stock supplies, secure loose outdoor items, and plan alternate routes in anticipation of Moke’s passage. His message, posted on social media, carried a direct operational warning:

“Please anticipate interruptions in power and communication and hazardous road conditions,” Alameda wrote.

The mayor’s appeal lands in a community already exhausted by weeks of cleanup, insurance claims, and displacement. For many residents on the Big Island’s windward slopes, the prospect of another week of near-continuous rain and gusty winds means repeating the same protective steps—filling bathtubs with water, moving vehicles out of low-lying areas, checking on elderly neighbors—while infrastructure crews are still stretched thin repairing Lala’s damage.

Why Sequential Storms Are Especially Devastating on Island Terrain

Hawaii’s geography amplifies the danger of back-to-back tropical events. The islands’ narrow landmasses, steep elevation changes from sea level to over 13,000 feet, and limited drainage capacity mean that rainfall which would merely inconvenience a continental community can become a life-threatening hazard within hours. When a second system arrives before roads have been reopened, bridges inspected, and saturated soils allowed to dry, the cumulative damage often far exceeds what either storm would have caused in isolation. Emergency managers on the islands describe this scenario as the worst-case operational challenge: every resource needed to respond to the new event is already committed to repairing the old one.

Residents across the chain are advised to monitor the National Hurricane Center’s updates through Monday, keep charged backup power sources available, and avoid travel on roads that have already shown signs of erosion or washout from Lala’s passage. The window between two tropical threats is narrow, and the margin for error on Hawaiian terrain is thinner still.