Flash Flood Warning Severe Hawaii | Effective 03-20-2026 13:54

Headline: 
Flash Flood Warning issued March 20 at 10:54AM HST until March 20 at 2:00PM HST by NWS Honolulu HI
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
March 20, 2026 - 1:54pm
Expires: 
March 20, 2026 - 5:00pm
Description: 
FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 200 PM HST. * At 1054 AM HST, additional water continued to run off into the Wahiawa Reservoir and area streams keeping water levels elevated. Flood impacts from earlier rainfall are ongoing. Despite a lull in rainfall at this time, additional areas of heavy rain are expected through the day which would exacerbate existing flooding. This is a FLASH FLOOD EMERGENCY for Northern Oahu. This is a PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW! HAZARD...Heavy rain producing life threatening flash flooding. SOURCE...Stream Gauges. IMPACT...Severe flooding in drainages, streams, rivers, roads, properties, and other low lying areas. Numerous public road closures expected, as well as landslides in steep terrain. Significant property damage expected to homes and other properties in low lying areas. * Some locations that will experience flash flooding include... Wahiawa, Schofield Barracks, Wheeler Field, Haleiwa, Waialua, Mililani, Hauula, Laie, Waianae, Punaluu, Kahuku, Nanakuli, Waikane, Kaaawa, Helemano Housing, Whitmore Village, Waimea Valley, Waimea Bay, Mokuleia and Pupukea.
Instruction: 
Move to higher ground now! This is an extremely dangerous and life-threatening situation. Do not attempt to travel unless you are fleeing an area subject to flooding or under an evacuation order. Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry. The heavy rains may cause rock and mudslides in steep terrain areas.
SNM: EMERGENCIA DE INUNDACIONES REPENTINAS hasta 2:00 PM HST. Evite areas inundadas.
Servicio Nacional de Meteorologia: EMERGENCIA DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 2:00 PM HST. Esta es una situacion extremadamente peligrosa y amenaza la vida. No intente viajar a menos que sea para abandonar un area propensa a inundaciones o bajo una orden de desalojo.
Area Description: 
Oahu in Honolulu, HI
Forcast Office: 
NWS Honolulu HI
Sender: 
w-nws.webmaster@noaa.gov