Flash Flood Warning — Hawaii in Hawaii County, Hawaii
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued August 15 at 6:49PM HST until August 15 at 10:00PM HST by NWS Honolulu HI
FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Hawaii in Hawaii County * Until 1000 PM HST. * At 649 PM HST, Doppler radar indicated moderate to heavy rain bands from Hurricane Lala continuing to move onshore across windward and southeast Big Island. The heaviest rain rates were occurring over the Kau district near Pahala and South Point with rates of 2 to 3 inches per hour. Additional heavy rain bands are anticipated over the next several hours, County emergency management officials have reported numerous road closures due to flooding in the South Hilo, Puna, Kohala, and Kau Districts. Considerable Flash flooding is expected across windward and southeast Big Island, especially over the Kau District. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * S
Effective August 16, 2026 at 12:49 AM ET · Expires August 16, 2026 at 4:00 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Honolulu HI
Expires
August 16, 2026 at 4:00 AM ET
Last Checked
2 minutes ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route.
Other Active Alerts in Hawaii
Flood Advisory
Flood Advisory
Hydrologic Outlook
Hydrologic Outlook
Hydrologic Outlook
Hydrologic Outlook
Get Flash Flood Warning Alerts for Hawaii in Hawaii County
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Frequently Asked Questions
What does a Flash Flood Warning mean for Hawaii in Hawaii County, Hawaii?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (2 minutes ago). It's set to expire August 16, 2026 at 4:00 AM ET.
How do I get notified about Flash Flood Warning alerts for Hawaii in Hawaii County?
Download StormCast free on Google Play and set Hawaii in Hawaii County, Hawaii as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.