The National Weather Service in Hawaii reported on Wednesday that preliminary data from a rain gauge on the north shore of Kauai at Waipa, one mile west of Hanalei, received 49.69” of rainfall over the 24-hour period ending at 12:45 pm April 15. If verified, this would break the all-time U.S. 24-hour rainfall record of 43.00” in Alvin, Texas set on July 25 – 26, 1979, during Tropical Storm Claudette. The record-setting rains on Kauai were due to an upper-level low located to its west on April 14 – 15, combined with a surge of rich low-level moisture. This set-up brought radar-estimated rainfall rates of 2 – 4” per hour to the north shore of the island.

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