Update at 9:49 a.m. Feb. 21, 2026: A flash flood warning in effect for the Garden Island will continue now until noon today as persistent heavy rainfall continues to cause ongoing flooding of rivers, streams and other low-lying areas as well as flash flooding in others.
National Weather Service forecasters in Honolulu say that radar indicated at 8:41 a.m. heavy rain showers over the island, with rain falling at a rate of 2 to 3 inches per hour observed offshore to the south of Kauaʻi and expected to move onshore yet this morning.
“Ponding, low visibility and other hazardous driving conditions are expected,” said Kauaʻi Emergency Management in its latest weather update. “If you must drive, please do so with extreme caution.
Hanalei River water levels also continue to be high enough to cause the closure of Kūhiō Highway near Hanalei River Bridge because of significant water over the roadway…