Flash Flood Warning Hawaii | Effective 03/15/2026 05:49

Headline: 
Flash Flood Warning issued March 15 at 2:49AM HST until March 15 at 6:00AM HST by NWS Honolulu HI
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
March 15, 2026 - 5:49am
Expires: 
March 15, 2026 - 9:00am
Description: 
At 249 AM HST, radar indicated heavy rain over the Big Island of Hawaii. Rain was falling at a rate of 1 to 2 inches per hour in some areas and additional heavy rain remains possible. Hawaii County Emergency Management officials are asking residents and visitors to shelter in place for this life threatening event, keeping roadways clear for emergency responders. HAZARD...Flash flooding caused by heavy rain impacts multiple communities on the Big Island of Hawaii. SOURCE...Radar and Emergency Management indicated. 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... the entire Big Island of Hawaii.
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: 
Hawaii in Hawaii, HI
Forcast Office: 
NWS Honolulu HI
Sender: 
w-nws.webmaster@noaa.gov