Hawaii is experiencing an unusual stretch of tropical weather, with two storms approaching the islands within a single week. At 5 a.m. ET on August 22, the National Weather Service reported Tropical Storm Moke positioned about 545 miles southeast of Hilo, moving west‑northwest at roughly 8 miles per hour and carrying maximum sustained winds of 45 mph.
Recent impacts from Hurricane Lala
Just a week earlier, Hurricane Lala intensified south of the Big Island, dumping more than three feet of rain on the windward side. The deluge triggered landslides, flash flooding, and isolated communities lost road access. Homes were damaged and critical infrastructure suffered, resulting in at least one confirmed fatality.
El Niño’s role in the heightened threat
Scientists attribute the recent surge in storm activity to a powerful El Niño event. Normally, cooler ocean waters surrounding Hawaii act like a natural shield, weakening approaching tropical systems. This season, El Niño has raised sea‑surface temperatures to the east, southeast, and south of the islands, eroding that protective barrier.
In typical (non‑El Niño) years, Pacific hurricanes encounter cooler waters and stronger upper‑level winds as they near Hawaii, which saps their energy. The current El Niño is altering both factors, allowing storms to retain more strength as they approach.
How unusual is the current pattern?
Matthew Rosencrans, lead hurricane‑season forecaster for the National Weather Service, notes that on average only one tropical cyclone comes within 300 nautical miles of Hawaii each season. With both Lala and Moke in such close proximity, the state has already seen twice its usual annual frequency, and a third system is considered possible later this season.
Rosencrans described the two‑week span as “very bizarre,” citing a temporary alignment of atmospheric steering currents that directed the storms toward the islands. He cautioned that these currents can shift quickly, potentially offering a reprieve.
Implications for residents
While neither storm is expected to make direct landfall, heavy rain and gusty winds are likely to affect parts of the islands, especially areas still recovering from Lala’s damage. Residents are urged to stay informed through local weather alerts, secure property, and prepare for possible flooding.
The broader Atlantic hurricane season remains relatively quiet, as El Niño typically increases upper‑level winds over the Atlantic, suppressing storm development there. This contrast underscores the regional nature of El Niño’s influence.
Looking ahead
Forecasters will continue to monitor steering currents and sea‑surface temperature trends. If the current pattern persists, Hawaii could see additional tropical systems this fall, emphasizing the need for ongoing preparedness among families, churches, and community groups.
Original reporting: El Paso News (HLL/CB) — read the source article.
