Flash Flood Warning Hawaii | Effective 03/21/2026 23:55

Headline: 
Flash Flood Warning issued March 21 at 8:55PM HST until March 22 at 12:00AM HST by NWS Honolulu HI
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
March 21, 2026 - 11:55pm
Expires: 
March 22, 2026 - 3:00am
Description: 
FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Maui in Maui County * Until midnight HST tonight. * At 855 PM HST, radar indicated heavy showers and thunderstorms persisting over West Maui, with rain falling at rates of 1 to 2 inches per hour. Stream levels remain high across West Maui, and emergency management recently reported road closures in the Lahaina, Kahului, and Wailuku areas. Additional heavy showers are developing south of Maui and are expected to lift northward over the island through the late evening and overnight hours. Given the saturated grounds from recent heavy rainfall, particularly in Kihei, even brief periods of heavy rain could quickly lead to renewed runoff and flooding impacts. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar. IMPACT...Flooding in drainages, streams, rivers, roads, properties, and other low-lying areas. Public road closures possible in some areas. Landslides are possible in steep terrain. * Some locations that will experience flash flooding include... Kahului, Kihei, Lahaina, Waikapu, Maalaea, Wailuku, Puunene, Waiehu, Waihee, Paia, Haliimaile, Olowalu, Pukalani, Makawao, Kahakuloa, Wailea, Kula, Keokea, Pauwela and Haiku-Pauwela.
Instruction: 
Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry. Be especially cautious at night when it is harder to recognize the dangers of flooding. The heavy rains may cause rock and mudslides in steep terrain areas.
Area Description: 
Maui, HI
Forcast Office: 
NWS Honolulu HI