On Thursday, Hurricane Lowell was still a Category 4 system south of Hawaii, and forecasters were focused on a remarkable but uncertain question: how sharply would it turn north? The National Hurricane Center said it was expected to be at or near major-hurricane strength at its closest approach, while models increasingly pointed to Kauai late Monday or early Tuesday.¹

Meteorologists traced the potential turn to an unusual Pacific setup. Karina’s remnants and an approaching North Pacific system were expected to form a larger trough, effectively pulling Lowell off its westward course. But the timing mattered enormously: small shifts could separate a close pass from a direct hit. NOAA scheduled reconnaissance flights to improve the sparse observations feeding those forecasts.¹

By Monday evening, the uncertainty had narrowed in the worst direction for Hawaii’s westernmost islands. Lowell had weakened to Category 2, with 110-mph sustained winds, but was accelerating north-northeast and sat about 170 miles southwest of Lihue. The National Hurricane Center said its northward turn had come later than anticipated, moving the projected track closer to Kauai and Niihau.²

The practical response was swift. Hawaii issued its first-ever tornado watch, while officials warned of flooding rain, mudslides and surf expected to build from 7 to 10 feet to as high as 30 feet. Kauai Mayor Derek Kawakami said residents had watched the storm “veer closer to us, too close for comfort,” and urged anyone still preparing to finish quickly and be indoors by midday.²

Governor Josh Green ordered Kauai schools and state and county offices closed Tuesday. With 4 to 8 inches of rain forecast, isolated totals of 12 inches possible, and coastal evacuations or road closures on the table, the message had shifted from watching the models to getting out of Lowell’s way.²