Flash Flood Warning Hawaii | Effective 03/23/2026 18:08

Headline: 
Flash Flood Warning issued March 23 at 3:08PM HST until March 23 at 4:30PM HST by NWS Honolulu HI
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
March 23, 2026 - 6:08pm
Expires: 
March 23, 2026 - 7:30pm
Description: 
At 308 PM HST, radar indicated heavy rain decreasing in intensity over windward Oahu, Manoa Valley, and Palolo Valley. Rain was falling at a rate of 1 to 1.5 inches per hour. Water levels in streams in Manoa, Palolo, and urban Honolulu are slowly lowering, while windward Oahu streams at Waiahole and Waikane remain high. 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... Honolulu, Ahuimanu, Kaneohe, Kahaluu, Waiahole, Kalihi, Moanalua, Maunawili, Halawa, Aiea, Manoa, Kaneohe Marine Base, Waikane, Salt Lake, Kailua, Palolo, Pearl City, Waimanalo, Kaaawa and Hawaii Kai.
Instruction: 
Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry.
Area Description: 
Oahu in Honolulu, HI
Forcast Office: 
NWS Honolulu HI
Sender: 
w-nws.webmaster@noaa.gov