Weather Alerts-

Flash Flood Warning

Until Sat 1:15 pm HST

1 of 5

Action Recommended

Avoid the subject event as per the instructions

Issued By

Honolulu - HI, US, National Weather Service

Affected Area

Honolulu County

Description

The National Weather Service in Honolulu has extended the Flash Flood Warning for... A Dam Failure on the Kaukonahua Stream below Wahiawa Dam on... The island of Oahu in Honolulu County Until 115 PM HST Saturday. At 105 PM HST, emergency management reported the imminent failure of Wahiawa Dam. HAZARD...Flash flooding from the imminent failure of Wahiawa Dam. SOURCE...Emergency management. IMPACT...Flooding of areas downstream from the Wahiawa Dam along the Kaukonahua Stream. The nearest downstream area from the dam is Waialua, Haleiwa, and Kaukonahua Stream. This includes the following streams and drainages... Poamoho Stm- Dole Fields, Poamoho Stm- Kaukonahua Hwy, Kaukonahua Stm- Schofield, Mohiakea Gul, Waialua Town, Kaukonahua Stm- N Fork Wahiawa, Kaukonahua Stm- Wahiawa, Kiikii Stm- Waialua, Helemano/Opaeula Stm- Haleiwa, Kaukonahua Stm- Waialua and Anahulu R- Haleiwa. Flooding is occurring along the Kaukonahua Stream. This warning may need to be extended beyond 115 PM HST Saturday if flooding persists. FLASH FLOOD...OBSERVED; DAM FAILURE...IMMINENT

Flash Flood Warning

Until Sat 11:00 am HST

2 of 5

Action Recommended

Avoid the subject event as per the instructions

Issued By

Honolulu - HI, US, National Weather Service

Affected Area

Honolulu County

Description

The National Weather Service in Honolulu has extended the Flash Flood Warning for... The island of Oahu in Honolulu County Until 1100 AM HST. At 747 AM HST, emergency management continued to report road closures across Oahu due to recent flooding. Additional bands of heavy showers and thunderstorms continue to pass over the southeast half of Oahu, with rain rates as high as 1 to 2 inches per hour. HAZARD...Flash flooding caused by heavy rain. SOURCE...Emergency management. 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 Island of Oahu. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry. Do not cross fast flowing or rising water in your vehicle, or on foot. Turn around, don't drown. This warning may need to be extended beyond 1100 AM HST if flooding; persists.; FLASH FLOOD...OBSERVED

Flood Watch

Until Sun 6:00 pm HST

3 of 5

Action Recommended

Avoid the subject event as per the instructions

Issued By

Honolulu - HI, US, National Weather Service

Affected Area

The island of Oahu, Molokai, Lanai, Kahoolawe, Maui, and the Big Island

Description

WHAT...Flash flooding caused by excessive rainfall is possible. WHERE...The island of Oahu, Molokai, Lanai, Kahoolawe, Maui, and the Big Island. WHEN...Through Sunday afternoon. 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... - A kona low developing west of the islands will draw abundant moisture northward as it strengthens and eventually departs to north early next week. Several rounds of moderate to heavy rainfall are anticipated. The heaviest rain is expected to last through tonight, except for the Big Island where the heaviest rain is expected on Sunday. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

More Information

...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON FOR ALL ISLANDS IN THE STATE OF HAWAII...

High Surf Advisory

From Sat 6:00 am until Sun 6:00 am HST

4 of 5

Action Recommended

Avoid the subject event as per the instructions

Issued By

Honolulu - HI, US, National Weather Service

Affected Area

North shores of Niihau, Kauai, and Oahu

Description

...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM HST SUNDAY... WHAT...Large breaking waves of 12 to 16 feet. WHERE...North shores of Niihau, Kauai, and Oahu. WHEN...From 6 AM this morning to 6 AM HST Sunday. IMPACTS...Moderate. Strong breaking waves and strong currents will make swimming dangerous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heed all advice from ocean safety officials. When in doubt, don't go out.

More Information

...HIGH SURF ADVISORY FOR NORTH FACING SHORES OF NIIHAU KAUAI AND OAHU... .A northerly swell is building in and will create large surf for north facing shores peaking Saturday afternoon and then slowly declining Saturday night.

Small Craft Advisory

Until Sun 6:00 am HST

5 of 5

Action Recommended

Avoid the subject event as per the instructions

Issued By

Honolulu - HI, US, National Weather Service

Affected Area

Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters and Kaiwi Channel

Description

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SUNDAY... WHAT...Seas 7 to 10 feet. WHERE...Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters and Kaiwi Channel. WHEN...Until 6 AM HST Sunday. IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in these conditions.

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