April Severe Weather

HNL Alert: 02:22 PM 04-10-2026 – FLASH FLOODING in Otake Camp. Extremely dangerous flooding is occurring.

An Evacuation Order has been issued for the following area(s): Otake Camp in Waialua. Map: https://p.veoci.com/hnlevac.

Go to high ground. If trapped, go to highest floor/roof.

LEAVE NOW or go to high ground or the highest floor of your home if you cannot evacuate.

DO NOT walk or drive through moving water or on flooded roadways

Stay out of the area until emergency officials advise it is safe to return.

Call 911 for emergencies only. Do not call 911 for information or non-emergency situations.

Details: https://alert.hnlalert.gov

HNL Alert: 02:34 PM 04-10-2026 – Severe Weather Update: Evacuation Transportation Services Available

Makaha-Nānākuli: Pick-up along Farrington Hwy between Mākaha Beach Park and Nānākuli Beach Park; drop-off at Nānākuli High & Intermediate shelter.

North Shore (Route 521 – Waialua–Haleʻiwa): Flag down anywhere; service to Weed Circle, then transfer to Route 52 to Wahiawā Transit Center.

Inform the driver you are evacuating.

Details: https://alert.hnlalert.gov

Flash Flood Warning

Flash Flood Warning issued April 10 at 4:46PM HST until April 10 at 7:45PM HST by NWS Honolulu HI

The National Weather Service in Honolulu has issued a

Flash Flood Warning for… The island of Oahu in Honolulu County * Until 745 PM HST.

At 446 PM HST, radar indicated heavy rain slowly moving eastward and should clear Oahu in the next hour or two. Rain was falling at a rate of 1 to 2 inches per hour, mainly over eastern portions of Oahu. Emergency management reported several road closures in northern and windward Oahu.

• 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… Wahiawa, Schofield Barracks, Wheeler Field, Mililani, Waialua, Haleiwa, Hauula, Laie, Punaluu, Waianae, Kahuku, Waikane, Nanakuli, Waiahole, Kaaawa, Kahaluu, Ahuimanu, Helemano Housing, Whitmore Village and Waimea Valley

Source

Flood Watch

Flood Watch National Weather Service Honolulu HI 254 PM HST Fri Apr 10 2026

…FLOOD WATCH IN EFFECT FOR OAHU, MAUI COUNTY AND THE BIG ISLAND THROUGH 6 AM HST SATURDAY…

Waianae Coast-Oahu North Shore-Olomana-Central Oahu-Waianae Mountains-Lanai Mauka-Kahoolawe-Maui Windward West-Maui Leeward West-Haleakala Summit-Kona-Kohala-Big Island Interior-Big Island Summits-East Honolulu-Honolulu Metro-Ewa Plain-Koolau Windward- Koolau Leeward-Molokai Windward-Molokai Southeast-Molokai North- Molokai West-Molokai Leeward South-Lanai Windward-Lanai Leeward- Lanai South-Maui Central Valley North-Maui Central Valley South- Windward Haleakala-Kipahulu-South Maui/Upcountry-South Haleakala- Big Island South-Big Island Southeast-Big Island East-Big Island North

• WHAT: Flash flooding caused by excessive rainfall continues to be possible.
• WHERE: Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island.
• WHEN: Through late tonight.
• IMPACTS: Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain.
• ADDITIONAL DETAILS: Low pressure northwest of the islands will continue to draw deep tropical moisture northward across the state, bringing the potential for heavy rain capable of producing flash flooding. The focus will gradually shift eastward tonight into Saturday morning as the axis of moisture progresses down the island chain and drier air fills in behind.
• PRECAUTIONARY/PREPAREDNESS ACTIONS: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Source

Flood Watch

National Weather Service Honolulu HI 225 AM HST Fri Apr 10 2026

FLOOD WATCH REMAINS IN EFFECT FOR ALL HAWAIIAN ISLANDS

• WHAT: Flash flooding caused by excessive rainfall is possible.
• WHERE: The island of Kauai in Kauai County, The island of Niihau in Kauai County, Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island.
• WHEN: Through this afternoon.
• IMPACTS: Significant flooding may occur due to excessive rainfall and overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain.
• ADDITIONAL DETAILS: Low pressure northwest of the islands will draw deep tropical moisture northward across the state, bringing the potential for heavy rain and thunderstorms capable of producing flash flooding.
• PRECAUTIONARY/PREPAREDNESS ACTIONS: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Flood Watch issued April 6 at 2:31PM HST until April 10 at 6:00PM HST by NWS Honolulu HI

FLOOD WATCH FOR ALL ISLANDS IN THE STATE OF HAWAII

• WHAT: Flash flooding caused by excessive rainfall is possible.
• WHERE: Kauai, Niihau, Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island.
• WHEN: From Wednesday morning through Friday afternoon.
• IMPACTS: Significant flooding may occur due to excessive rainfall and overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain.
• ADDITIONAL DETAILS: A deep layered trough will develop west of the islands and draw abundant moisture northward as it strengthens on Tuesday. Instability and upward forcing will enhance the available moisture and bring the potential for heavy rain and thunderstorms leading to flash flooding across all islands in the state of Hawaii

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