Honolulu Faces Heavy Rainfall, Mariners and Aviators Warned

URGENT UPDATE: Honolulu is bracing for a significant rainy spell starting today, as residents prepare for typical trade wind showers. The National Weather Service warns that a dissipating front west of Kauai will transition into a trough, leading to increased rainfall, especially in windward and mauka areas from Saturday through early next week.

Forecasts indicate a gradual strengthening of southeasterly winds today, pushing showers toward the east and southeast slopes of the islands. Although trade winds are expected to ease slightly, their shift from the east could enhance rainfall during certain periods. However, no major moisture sources have been detected, leaving some uncertainty in weather predictions.

Aviation alerts issued by the National Weather Service highlight potential moderate turbulence and low-level wind shear that could impact operations at PHOG by this afternoon. Despite generally expected VFR (Visual Flight Rules) conditions, aviators are advised to exercise caution.

For mariners, a Small Craft Advisory is in effect until early Saturday for waters around Maui County and the Big Island. A moderate to large northwest swell is forecasted to push combined seas over 10 feet, prompting warnings for dangerous surf conditions along northern and western shores. A High Surf Advisory may be issued due to this incoming swell, which, combined with peak monthly tides, raises concerns for minor coastal flooding during early morning high tides.

The National Weather Service also reports that, despite these advisories, critical fire weather conditions are unlikely this week in Honolulu. Relative humidity levels remain near seasonal norms, and wind speeds are projected to increase only to moderate strength. Consequently, the risk of fire remains below critical thresholds, although officials are closely monitoring the evolving weather situation.

Residents and visitors are urged to stay updated on weather conditions and heed all advisories as the situation develops. The potential for heavy rainfall and hazardous surf conditions makes it imperative to remain vigilant and prepared.