Station Name: Mokapu Point, HI (098)
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
Offshore
Kailua, HI 96735
Honolulu County

GPS Coordinates: 21.417, -157.68

Nearby Water Temperatures

Flash Flood Warning issued March 20 at 1:05PM HST until March 21 at 1:15PM HST by NWS Honolulu HI

Effective: Fri March 20, 2026, 1:05 PM
Expires: Sat March 21, 2026, 1:15 PM

FFWHFO 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 Warning issued March 20 at 7:49PM HST until March 20 at 11:00PM HST by NWS Honolulu HI

Effective: Fri March 20, 2026, 7:49 PM
Expires: Fri March 20, 2026, 11:00 PM

FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 1100 PM HST. * At 749 PM HST, emergency management reported numerous closed roads due to flooding from earlier today. Latest radar shows a decrease in shower intensity, but heavy showers will be possible tonight. The Wahiawa Reservoir remains elevated and will continue to be a concern due to additional heavy rain expected over the next few days. 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... Wahiawa, Schofield Barracks, Wheeler Field, Haleiwa, Waialua, Mililani, Hauula, Laie, Waianae, Punaluu, Kahuku, Nanakuli, Waikane, Kaaawa, Helemano Housing, Whitmore Village, Waimea Valley, Waimea Bay, Mokuleia and Pupukea.

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. Be especially cautious at night when it is harder to recognize the dangers of flooding.

Flood Watch issued March 20 at 5:12PM HST until March 22 at 6:00PM HST by NWS Honolulu HI

Effective: Fri March 20, 2026, 5:12 PM
Expires: Sat March 21, 2026, 6:00 AM

...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON FOR ALL ISLANDS IN THE STATE OF HAWAII... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...The island of Oahu in Honolulu County, Maui, Molokai, Lanai, Kahoolawe, 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 from Friday night through Saturday, except for the Big Island where the heaviest rain is expected on Sunday.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Flash Flood Warning issued March 21 at 1:56AM HST until March 21 at 5:00AM HST by NWS Honolulu HI

Effective: Sat March 21, 2026, 1:56 AM
Expires: Sat March 21, 2026, 5:00 AM

FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 500 AM HST. * At 156 AM HST, emergency management reported numerous closed roads due to flooding. While the latest radar shows a significant decrease in shower coverage and intensity, return showers are expected into the early morning hours. The Wahiawa Reservoir remains elevated and will continue to be a concern due to additional heavy rain expected over the next few days. 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... Wahiawa, Schofield Barracks, Wheeler Field, Haleiwa, Waialua, Mililani, Hauula, Laie, Waianae, Punaluu, Kahuku, Nanakuli, Waikane, Kaaawa, Helemano Housing, Whitmore Village, Waimea Valley, Waimea Bay, Mokuleia and Pupukea.

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. Be especially cautious at night when it is harder to recognize the dangers of flooding.

Flash Flood Warning issued March 20 at 11:52PM HST until March 21 at 3:00AM HST by NWS Honolulu HI

Effective: Fri March 20, 2026, 11:52 PM
Expires: Sat March 21, 2026, 3:00 AM

FFWHFO The National Weather Service in Honolulu has extended the * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 300 AM HST. * At 1152 PM HST, emergency management reported closed roads on the windward side of the island due to flooding. Latest radar only depicts light showers, however additional bands of moderate to potentially locally heavy showers may move in from the south during the early morning hours. 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... Honolulu, Waipio, Moanalua, Halawa, Salt Lake, Aiea, Kalihi, Pearl City, Ahuimanu, Iroquois Point, Manoa, Kahaluu, Kaneohe, Waiahole, Waipahu, Waikele, Palolo, Maunawili, Waikane and Ewa Beach.

Do not cross fast flowing or rising water in your vehicle, or on foot. Turn around, don't drown. Be especially cautious at night when it is harder to recognize the dangers of flooding. Excessive runoff from heavy rainfall will cause flooding of drainage ditches and streams, streets, highways, properties, and other low lying spots.