Flash Flood Warning Hawaii | Effective 03/21/2026 14:47

Headline: 
Flash Flood Warning issued March 21 at 11:47AM HST until March 21 at 12:45PM HST by NWS Honolulu HI
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
March 21, 2026 - 2:47pm
Expires: 
March 21, 2026 - 3:45pm
Description: 
At 1147 AM HST, radar indicated heavy rainfall with rates of 1 to 2 inches per hour over southeast Molokai. Emergency management reported the closure of Kamehameha V Highway near mile marker 7. Flash flooding is ongoing 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... Pukoo, Ualapue, Kamalo, Halawa Valley, Kawela and Kalaupapa National Park.
Instruction: 
Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry.
Area Description: 
Maui, HI
Forcast Office: 
NWS Honolulu HI