Hawaii Severe Flash Flood Warning | Effective 09/09/2026 23:32

Headline: 
Flash Flood Warning issued September 9 at 8:32PM HST until September 9 at 11:30PM HST by NWS Honolulu HI
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
September 9, 2026 - 11:32pm
Expires: 
September 10, 2026 - 2:30am
Description: 
FFWHFO The National Weather Service in Honolulu has issued a * Flash Flood Warning for... The island of Hawaii in Hawaii County * Until 1130 PM HST. * At 832 PM HST, Doppler radar indicated rain forming and moving over the Kau and Puna districts, with rainfall rates up to 1 inch per hour over already saturated grounds. Big Island Civil Defense reports Highwy 11 is closed in both directions near mile markers 56 and 63 due to flooding. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Hawaiian Paradise Park, Hawaii Volcanoes National Park, Wood Valley, Volcano, Pahala, Glenwood, Punaluu Beach, Kawa Flats, Mountain View, Hawaiian Acres and Naalehu.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Hawaii in Hawaii, HI
Forcast Office: 
NWS Honolulu HI
Sender: 
w-nws.webmaster@noaa.gov