Update: Flood advisory canceled, high surf advisory remains in effect

Update may 2, 3:30 p.m.: The National Weather Service has canceled the flood advisory for Kauaʻi, but a flood watch remains in effect until 6 a.m. Wednesday. High surf advisory remains in effect.

Update May 2, 12:30 p.m.: The National Weather Service has issued a flood advisory until 3:15 p.m. on Tuesday on Kauaʻi. At 12:13 p.m., radar and automated rain gauges indicated heavy rain over the northeast portion of Kauaʻi. The heaviest rain was falling between Wailua and Anahola at a rate of 1 to 3 inches per hour.

Update May 2, 7 a.m.: In addition to the flood watch, the National Weather Service also has issued a high surf advisory for Kauaʻi and Niʻihau for north- and west-facing shores.

The forecast is for surf of 12 to 16 feet along north-facing shores, and 8 to 12 feet along west-facing shores. Strong breaking waves and strong currents will make swimming dangerous.

Update May 2, 6 a.m.: The National Weather Service now has Kauaʻi and Niʻihau under a flood watch until early Wednesday morning.

Unstable conditions with slow-moving heavy showers and thunderstorms will develop through early Wednesday morning as a low-pressure system approaches the islands from the northwest.

Flash flooding caused by excessive rainfall is possible.

Original post: The National Weather Service in Honolulu has issued a flood advisory for northern and eastern portions of Kauaʻi through the rest of this afternoon and into the evening.

Minor flooding on roads and in poor drainage areas and streams is likely in the advisory area until 6:45 p.m. because of excessive rainfall.

At 3:34 p.m., radar indicated heavy rain over the windward slopes of the island, including portions of the Hanalei and Wailua River basins and Kapaʻa Stream. Rain was falling at a rate of 1 to 2 inches per hour and is likely to continue during the next several hours.

Some locations that will experience flooding include Līhuʻe, Kapaʻa, Princeville, Kīlauea, North Fork Wailua Trails, Wailua Homesteads, Wailua, Hanalei, Moloaʻa, Anahola, Wainiha, Hāʻena, Nā Pali State Park, Wailua River State Park, Kalihiwai, Kealia, Hanamāʻulu and Puhi.

If you are in the advisory area, stay away from streams, drainage ditches and low-lying areas prone to flooding.