Flash Flood in Honolulu County, Hawaii
Flash Flood March 12, 2026 – March 13, 2026 · Honolulu County, Hawaii
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Due to the persistent heavy rain that fell over Oahu, widespread flooding over the east side of Oahu was observed on March 12 through March 13. Kapaa Quary Rd was closed on March 12. The next day a landslide was reported at Kapaa Quarry Rd and Kalanianaole Highway. Additionally on March 13, flooding was reported on Humupaa Pl. Emergency management reported a landslide on Auloa Rd 400 yards from Pali Hwy. Flooding was also observed on Kamehameha Highway, and near Hihimanu St and Waikupanaha Street.
The wider storm
From March 12th through March 14th of 2026, a large and powerful kona storm setup over the northern central Pacific, and brought numerous impacts across the state. This low was supported by a broad and potent upper level trough that lingered for many days. Impacts included flash flooding, wind damage, large surf, and strong thunderstorms.
Began near Waikane (21.5155, -157.9456).
Source: NOAA Storm Events Database, event 1312674. Narratives are written by the National Weather Service forecast office that issued the report.
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